Open Source Ecology - User contributions [en]

LifeCat 1.0/Research Development

2012-02-27T02:59:49Z

MikeA: /* Concept Generation & Sub Component Engineering */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

'''[[Design Process| The Design Process]]''' - General overview of the design process

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* '''[[/Features| Desired Features]]''' - List of desired features
* Detailed Specifications - Coming soon

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models - Email [[Mike Apostol]] if you would like what is done so far
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0

2012-02-27T02:52:54Z

MikeA: /* Project Leaders */

[[Category:LifeTrac]]
[[Category:LifeCat]]
[[Category:GVCS]]
{{Header Tool|ToolParent=LifeTrac|ToolName={{BASEPAGENAME}}}}

==Overview==
LifeCat is a pure skid steer machine that is a parallel project to the LifeTrac. The development process will be slower than the LifeTrac to try and understand some of the more complex dynamics involved in skid steer loading forces. This will allow for the development of a optimized frame with an emphasis on safety, human factors, construction and sound design principals.

It is expected that there will be shared development between the LifeCat and LifeTrac, however there will be difference in the initial design specifications that will necessitate some obvious changes. Additionally LifeCat will be the first machine designed in metric from the start. It could be argued that this should share the LifeTrac name, but the at the core of the LifeTrac the idea is to have a tractor, and this machine will not full fill that requirement.

==Current Design Status==
Early research and development

==General Specifications==
Coming as soon as they're developed!

==Current Needs==
* Lots of [[/Research Development| R&D]] work required! Head over there and start filling in the missing info :D
** Specifically some more information on Industry Standards and pulling out the useful points from the documents that are there
** Find more DIY projects for ideas

==Project Leaders==
* [[Mike Apostol]] - No longer have time for OSE for the next couple of months. If someone would like to continue this project please do so!

Talk:Aaron log/Prototypes Wiki Redesign 01

2012-02-22T14:04:29Z

MikeA: Created page with "Looking much cleaner Aaron keep up the good work! - Mike 2012/02/22"

Looking much cleaner Aaron keep up the good work! - Mike 2012/02/22

LifeTrac IV

2012-02-16T01:21:14Z

MikeA:

[[Category:LifeTrac]]
[[Category:GVCS]]
{{ToolTemplate2|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}

=Overview=
LifeTrac IV is the fourth iteration of [[LifeTrac]]. It is a retrofit of existing LifeTrac III's with bent loader arms and [[Quick Attach Wheels]]. Additional load carrying capacity is gained from adding weight to the rear of the vehicle.

We received assistance from GrabCAD on wheel redesign - [http://grabcad.com/challenges/lifetrac-quick-connect-wheels see challenge.] Additional changes may be made in this iteration as well.

=Current Design Status=
One LifeTrac has been retrofitted with the bent loader arms, quick attach wheel plates and additional weight.
* [http://blog.opensourceecology.org/2012/01/quick-connect-wheels-update/ Quick Connect Wheels Blog]
* [[Quick_Connect_Wheels| Quick Connect Wheels Updates]]

=General Specifications=
* [[/User Manual/Spec Sheet| Spec Sheet]]

=Important Links=
* [[/Research_Development| LifeTrac IV Research & Development]]
* [[/Manufacturing Instructions| LifeTrac IV Manufacturing Instructions]]
* [[/Lessons Learned| LifeTrac IV Lessons Learned]]
* '''[[LifeTrac IV Design Analysis]]''' - Go here to help with some of the LifeTrac IV engineering design analysis

=Current Needs=

=Project Leaders=

CAD Standards

2012-02-13T16:42:13Z

MikeA: /* Safety Wire */

{{CADTemplate}}
=Overview=
'''Note: This page is currently just being created. More information to come in the next few weeks. MA - 2011-12-09'''

This page is to create a unified approach to modeling, drafting and design of open source hardware. Please read thoroughly if you will be doing any CAD work.

Discussions of major changes to the standards outlined here should take place in [[CAD Standards Discussions]] before this page is changed.

=Units=
'''Preference:''' It is the preference for all initial designs to be done in metric as that is the standard in the majority of the world. It is easy to get metric sized materials in the US, but often difficult to get imperial sizes in other countries.

'''Standard:''' All designs should be eventually be available in both metric and imperial.

'''Currently:''' On site at FeF, the prototypes are being fabricated with imperial units and material sizes. Because of this the initial CAD for the products developed is done in imperial. Discussion has already begun on the availability of metric materials from local material suppliers

'''Design Conversion:''' Designs must be carefully reviewed as pure mathematical conversions from standard to metric will not yield designs that are able to be fabricated properly as material sizes and shapes vary between the two systems. However with a little time and effort all designs should be able to be converted to metric. Ideally, once a design is finalized we should be able to produce two, slightly different versions of it. Then the user can choose to build using one or the other, depending on what tools/parts are more readily available in that area.

=Drawings=
Creating drawings that follow standardized formats is important in providing a consistent readability and quality of the open source hardware tools. When making drawings, go carefully over the different fields and ensure they are filled out appropriately to the part or assembly you're creating.

*'''[[Sample_Fabrication_Drawing| Sample Fabrication Drawings]]''' - Use these sample fabrication drawings as reference for the standard of drawing quality desired until our own samples are created.

==Title Block==
{| cellpadding="3" cellspacing="0"
|[[File:Titleblockscreenshot.PNG|left|300px]]
|width=400px|The [[Media:Title_Block_B_-_Sheet_1.PDF|OSE Title Block]] is available in ANSI A, B, C, D, and E sizes.

Sheet 1 of any drawing will be the [[Media:Title_Block_B_-_Sheet_1.PDF|full title block]] while sheets 2+ utilize a [[Media:TitleBlockBSheet2.PDF|reduced title block]] that contains only the pertinent information to associate it with Sheet 1.
|}

{| border="1" cellpadding="5" cellspacing="0"
|- style="color:black; background-color:#ffffcc;"
!colspan="8"| OSE Title Block Download
|- style="color:black; background-color:#ffffff;"
!; style="background-color:#ccffcc"| Program
!; style="background-color:#ccffcc"| Extension
!| ANSI A
!| ANSI B
!| ANSI C
!| ANSI D
!| ANSI E
!| Download All
|- align="center"
!|Solidworks
|*.slddrt
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/slddrt.zip Zip]
|- align="center"
!|AutoCAD Template
|*.DWT
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwt.zip Zip]
|- align="center"
!|AutoCAD
|*.DWG
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwg.zip Zip]
|- align="center"
!|General Use
|*.DXF
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dxf.zip Zip]
|- align="center"
!|Alibre
|*.ad_drw
|Place Holder
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.ad_drw 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.ad_drw 2+]
|Place Holder
|Place Holder
|Place Holder
|Place Holder
|}

*'''Lettering:''' All text on the drawing should be done in ''BLOCK LETTERS''.

*'''Units:''' Units and tolerances are in imperial but are easily modified to metric.

*'''Mass:''' Mass should be input in LBS or KG with 3 significant digits and the units afterwards. (0.125KG, 1.25KG, 12.5KG, 125KG)

*'''Need:''' Please provide replication of these title blocks to native formats in other programs if you have the capability to do so and add them to the table. [[CAD_Needs_and_Requests#Title_Block_Conversion|Go here]] to help out

==License Agreement==
Drawings should either not have a license agreement or contain the following text:
* ALL INFORMATION IS RELEASED UNDER THE OSE LICENSE FOR DISTRIBUTIVE ECONOMICS. FOR FURTHER INFORMATION GO TO: OPENSOURCEECOLOGY.ORG/WIKI/LICENSE

==Dimensions==
'''[http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html Engineering Drawing]''' - Some beginner introductions to engineering drawings from MIT
===Tolerances===
===GD&T===
[[File:Gdt_diagram.jpg|thumb|right]]
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each facet of the part.

See the image on the right for a good overview of the different GD&T symbols and what they mean.

====Links====
'''[http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing GD&T Wiki]''' - Wiki on GD&T

'''[http://www.tec-ease.com/gdt-tips.php Free GD&T]''' - Great resource for some free GD&T help

'''[http://www.asme.org/products/codes---standards/dimensioning-and-tolerancing ASME Ordering]''' - You can go here to order the official ASME Y14.5 - 2009 GD&T standard

'''[http://www.advanceddimensionalmanagement.com/gdt_justification.php GD&T Justification]''' - This provides an explanation for why we use GD&T on drawings

==Welding==
===Resources===
* [http://deltaschooloftrades.com/welding_symbols.htm Welding Symbols] - Information on interpreting weld symbols on a drawing
* [http://www.unified-eng.com/scitech/weld/weld.html Weld Symbols] - Additional information on weld symbols

==Drawing Views==
===Standard Views===
===Sections and Detailed Views===
===Third Angle Projection===

==Notes==
All drawing notes should be in BLOCK LETTERS and go on the top left of Sheet 1 under "NOTES:" as seen on this sample drawing (coming soon). Notes should be numbered and if they are used to reference a specific place on the drawing place a hexagon around the number and use that in the drawing views. They can also be placed beside parts on the BOM in a similar fashion.
===Material===
===Fabrication Help===
===URLs===

==Layers==
Although not critical, it is useful to separate out the different aspects of the drawings onto different layers.

Title Block - Layer XX
Dimensions - Layer XX
Model Views - Layer XX

==Bill of Material==
The bill of material (BOM) is used to list all the parts in an assembly or weldment of parts. You can view a sample of this '''here'''. Most CAD packages can automatically create these, however if a manual BOM is required please ensure the following fields are present:
* ITEM NO.
* PART NUMBER
* DESCRIPTION
* QTY

==Vendor Item Drawings==
For items that are purchased, it is often useful to make a drawing of them. The drawing outlines the critical physical dimensions, tolerances and features that are important for space claim and mounting purposes.

In the notes you can also add relevant specifications and a list of vendors.

=Part Numbering and Naming=
==Non-Significant Numbering==
==Part Naming==
==Standard Hardware==

=Revision Level=
Initial design is Revision "-" or no revision. Revisions to the drawings should proceed alphabetically, starting at A and progress from there to B, C, D, etc. If a part is revised over revision level Z, the next revision level shall be AA, AB, AC, etc.

=Part Attributes=
Some useful part attributes to embed into part and assembly files:
* Description
* Part Number (File name)
* Revision
* Material
* Stock Size
* Length

{{Wanted|Need to find out if these get saved across different file types like STEP. This becomes an issue if we're depending on these to create BOMs and MBOMs}}

=Materials=
A-36 or 1010-1020

=Paint=
'''Currently undergoing review and specification.'''

'''Intended use:'''
* Oil base - indoor steel equipment
* Alkyd - outdoor structures
* Two part polyurethane - outdoor equipment
**The polyurethane could be used for all uses with best results. It has some of the best abrasive resistance without going to powder coat. Polyurethane is commonly used for earth moving equipment and military vehicles. It works best with abrasive blasted surface prep, but can be used with a primer used with hand tool or power tool surface prep using wire brush, but with not quite as good performance as prep with abrasive blasting. Will a standard spec OSE shop have blasting equipment? It is a pretty basic capability.

=Standard Hardware=
We will be creating a multi-format database of models of standard hardware based on industry standard sizes (both metric and imperial) that will be freely available to download.
{{Wanted|If you can help us create this database or have one already made please e-mail CAD@opensourceecology.org}}

'''[[CAD Standard Sizes]]''' - Discussion on standard sizes of hardware and materials that should be tried to use more often in designs to facilitate more modular and repairable designs among the GVCS tools.
==Downloadable Database==
Look into [[SKDB]] to see if still relevant.
==Fastening Hardware==
==Hydraulic Fittings Hardware==
==Structural Members==

=Routings=

=Export Formats=

==Models==
* Solidworks Native
* eDrawings
* STEP
* COLLADA
* STL

==Drawings==
* Solidworks Native
* eDrawings
* DXF
* DWG
* PDF

=Bill of Materials vs Manufacturing Bill of Material=

=Design Best Practices=

*[[OSE_Specifications#GVCS_Specifications.2FCore_Values|OSE Core Values]]

===Thread locker vs Lock Washers===
Much research has been done on the usefulness of different types of lock washers and thread locker compounds. For applications where ensuring maintaining torque is required, a thread locker is preferred such as Loctite or Hernon Nuts N Bolts. Split lock washers and other variants of lock washers do not actually help maintain bolt torque and loosen when subjected to vibration. Once loosened however they do help keep the nut and bolt from loosening fully and falling off.

Loctite 243/266 and Hernon Nuts N Bolts 434/439 are all surface insensitive, good for zinc plated and stainless surfaces as well as steel and brass, and allowance for some contamination from oil and grease. Loctite and Hernon Nuts N Bolts are primerless unless a fast cure <1 hour is needed, Permatex 24027 and Cyclo C-24350 recommend surface prep activator for full strength on plated and stainless surfaces.

The Loctite and Hernon are interchangeable with medium and high strength versions, medium for disassembly with hand tools, high for permanent, possible disassembly with heat. Both are used for
screws and bolts size 1/4" to 3/4".

===Safety Wire===
[http://en.wikipedia.org/wiki/Safety_wire Wikipedia: Safety Wire] - "Typically safety wire is threaded through a hole drilled into a fastener or part, then twisted and anchored to a second fastener or part then twisted again, usually with the aid of safety wire pliers...Although many systems purport to be more efficient than installing traditional safety wire, an advantageous by-product of the twisting method of installing safety wire is that it leaves a highly visible and easily inspectable indication that the fasteners in question are in fact properly secured. In addition, safety wire twisting is a standard, non-proprietary technique, and tools and materials can be easily found..."

[[Category: CAD]]

CAD Standards

2012-02-13T16:40:56Z

MikeA: /* Paint */

{{CADTemplate}}
=Overview=
'''Note: This page is currently just being created. More information to come in the next few weeks. MA - 2011-12-09'''

This page is to create a unified approach to modeling, drafting and design of open source hardware. Please read thoroughly if you will be doing any CAD work.

Discussions of major changes to the standards outlined here should take place in [[CAD Standards Discussions]] before this page is changed.

=Units=
'''Preference:''' It is the preference for all initial designs to be done in metric as that is the standard in the majority of the world. It is easy to get metric sized materials in the US, but often difficult to get imperial sizes in other countries.

'''Standard:''' All designs should be eventually be available in both metric and imperial.

'''Currently:''' On site at FeF, the prototypes are being fabricated with imperial units and material sizes. Because of this the initial CAD for the products developed is done in imperial. Discussion has already begun on the availability of metric materials from local material suppliers

'''Design Conversion:''' Designs must be carefully reviewed as pure mathematical conversions from standard to metric will not yield designs that are able to be fabricated properly as material sizes and shapes vary between the two systems. However with a little time and effort all designs should be able to be converted to metric. Ideally, once a design is finalized we should be able to produce two, slightly different versions of it. Then the user can choose to build using one or the other, depending on what tools/parts are more readily available in that area.

=Drawings=
Creating drawings that follow standardized formats is important in providing a consistent readability and quality of the open source hardware tools. When making drawings, go carefully over the different fields and ensure they are filled out appropriately to the part or assembly you're creating.

*'''[[Sample_Fabrication_Drawing| Sample Fabrication Drawings]]''' - Use these sample fabrication drawings as reference for the standard of drawing quality desired until our own samples are created.

==Title Block==
{| cellpadding="3" cellspacing="0"
|[[File:Titleblockscreenshot.PNG|left|300px]]
|width=400px|The [[Media:Title_Block_B_-_Sheet_1.PDF|OSE Title Block]] is available in ANSI A, B, C, D, and E sizes.

Sheet 1 of any drawing will be the [[Media:Title_Block_B_-_Sheet_1.PDF|full title block]] while sheets 2+ utilize a [[Media:TitleBlockBSheet2.PDF|reduced title block]] that contains only the pertinent information to associate it with Sheet 1.
|}

{| border="1" cellpadding="5" cellspacing="0"
|- style="color:black; background-color:#ffffcc;"
!colspan="8"| OSE Title Block Download
|- style="color:black; background-color:#ffffff;"
!; style="background-color:#ccffcc"| Program
!; style="background-color:#ccffcc"| Extension
!| ANSI A
!| ANSI B
!| ANSI C
!| ANSI D
!| ANSI E
!| Download All
|- align="center"
!|Solidworks
|*.slddrt
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/slddrt.zip Zip]
|- align="center"
!|AutoCAD Template
|*.DWT
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwt.zip Zip]
|- align="center"
!|AutoCAD
|*.DWG
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwg.zip Zip]
|- align="center"
!|General Use
|*.DXF
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dxf.zip Zip]
|- align="center"
!|Alibre
|*.ad_drw
|Place Holder
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.ad_drw 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.ad_drw 2+]
|Place Holder
|Place Holder
|Place Holder
|Place Holder
|}

*'''Lettering:''' All text on the drawing should be done in ''BLOCK LETTERS''.

*'''Units:''' Units and tolerances are in imperial but are easily modified to metric.

*'''Mass:''' Mass should be input in LBS or KG with 3 significant digits and the units afterwards. (0.125KG, 1.25KG, 12.5KG, 125KG)

*'''Need:''' Please provide replication of these title blocks to native formats in other programs if you have the capability to do so and add them to the table. [[CAD_Needs_and_Requests#Title_Block_Conversion|Go here]] to help out

==License Agreement==
Drawings should either not have a license agreement or contain the following text:
* ALL INFORMATION IS RELEASED UNDER THE OSE LICENSE FOR DISTRIBUTIVE ECONOMICS. FOR FURTHER INFORMATION GO TO: OPENSOURCEECOLOGY.ORG/WIKI/LICENSE

==Dimensions==
'''[http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html Engineering Drawing]''' - Some beginner introductions to engineering drawings from MIT
===Tolerances===
===GD&T===
[[File:Gdt_diagram.jpg|thumb|right]]
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each facet of the part.

See the image on the right for a good overview of the different GD&T symbols and what they mean.

====Links====
'''[http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing GD&T Wiki]''' - Wiki on GD&T

'''[http://www.tec-ease.com/gdt-tips.php Free GD&T]''' - Great resource for some free GD&T help

'''[http://www.asme.org/products/codes---standards/dimensioning-and-tolerancing ASME Ordering]''' - You can go here to order the official ASME Y14.5 - 2009 GD&T standard

'''[http://www.advanceddimensionalmanagement.com/gdt_justification.php GD&T Justification]''' - This provides an explanation for why we use GD&T on drawings

==Welding==
===Resources===
* [http://deltaschooloftrades.com/welding_symbols.htm Welding Symbols] - Information on interpreting weld symbols on a drawing
* [http://www.unified-eng.com/scitech/weld/weld.html Weld Symbols] - Additional information on weld symbols

==Drawing Views==
===Standard Views===
===Sections and Detailed Views===
===Third Angle Projection===

==Notes==
All drawing notes should be in BLOCK LETTERS and go on the top left of Sheet 1 under "NOTES:" as seen on this sample drawing (coming soon). Notes should be numbered and if they are used to reference a specific place on the drawing place a hexagon around the number and use that in the drawing views. They can also be placed beside parts on the BOM in a similar fashion.
===Material===
===Fabrication Help===
===URLs===

==Layers==
Although not critical, it is useful to separate out the different aspects of the drawings onto different layers.

Title Block - Layer XX
Dimensions - Layer XX
Model Views - Layer XX

==Bill of Material==
The bill of material (BOM) is used to list all the parts in an assembly or weldment of parts. You can view a sample of this '''here'''. Most CAD packages can automatically create these, however if a manual BOM is required please ensure the following fields are present:
* ITEM NO.
* PART NUMBER
* DESCRIPTION
* QTY

==Vendor Item Drawings==
For items that are purchased, it is often useful to make a drawing of them. The drawing outlines the critical physical dimensions, tolerances and features that are important for space claim and mounting purposes.

In the notes you can also add relevant specifications and a list of vendors.

=Part Numbering and Naming=
==Non-Significant Numbering==
==Part Naming==
==Standard Hardware==

=Revision Level=
Initial design is Revision "-" or no revision. Revisions to the drawings should proceed alphabetically, starting at A and progress from there to B, C, D, etc. If a part is revised over revision level Z, the next revision level shall be AA, AB, AC, etc.

=Part Attributes=
Some useful part attributes to embed into part and assembly files:
* Description
* Part Number (File name)
* Revision
* Material
* Stock Size
* Length

{{Wanted|Need to find out if these get saved across different file types like STEP. This becomes an issue if we're depending on these to create BOMs and MBOMs}}

=Materials=
A-36 or 1010-1020

=Paint=
'''Currently undergoing review and specification.'''

'''Intended use:'''
* Oil base - indoor steel equipment
* Alkyd - outdoor structures
* Two part polyurethane - outdoor equipment
**The polyurethane could be used for all uses with best results. It has some of the best abrasive resistance without going to powder coat. Polyurethane is commonly used for earth moving equipment and military vehicles. It works best with abrasive blasted surface prep, but can be used with a primer used with hand tool or power tool surface prep using wire brush, but with not quite as good performance as prep with abrasive blasting. Will a standard spec OSE shop have blasting equipment? It is a pretty basic capability.

=Standard Hardware=
We will be creating a multi-format database of models of standard hardware based on industry standard sizes (both metric and imperial) that will be freely available to download.
{{Wanted|If you can help us create this database or have one already made please e-mail CAD@opensourceecology.org}}

'''[[CAD Standard Sizes]]''' - Discussion on standard sizes of hardware and materials that should be tried to use more often in designs to facilitate more modular and repairable designs among the GVCS tools.
==Downloadable Database==
Look into [[SKDB]] to see if still relevant.
==Fastening Hardware==
==Hydraulic Fittings Hardware==
==Structural Members==

=Routings=

=Export Formats=

==Models==
* Solidworks Native
* eDrawings
* STEP
* COLLADA
* STL

==Drawings==
* Solidworks Native
* eDrawings
* DXF
* DWG
* PDF

=Bill of Materials vs Manufacturing Bill of Material=

=Design Best Practices=

*[[OSE_Specifications#GVCS_Specifications.2FCore_Values|OSE Core Values]]

===Thread locker vs Lock Washers===
Much research has been done on the usefulness of different types of lock washers and thread locker compounds. For applications where ensuring maintaining torque is required, a thread locker is preferred such as Loctite or Hernon Nuts N Bolts. Split lock washers and other variants of lock washers do not actually help maintain bolt torque and loosen when subjected to vibration. Once loosened however they do help keep the nut and bolt from loosening fully and falling off.

Loctite 243/266 and Hernon Nuts N Bolts 434/439 are all surface insensitive, good for zinc plated and stainless surfaces as well as steel and brass, and allowance for some contamination from oil and grease. Loctite and Hernon Nuts N Bolts are primerless unless a fast cure <1 hour is needed, Permatex 24027 and Cyclo C-24350 recommend surface prep activator for full strength on plated and stainless surfaces.

The Loctite and Hernon are interchangeable with medium and high strength versions, medium for disassembly with hand tools, high for permanent, possible disassembly with heat. Both are used for
screws and bolts size 1/4" to 3/4".

===Safety Wire===
[http://en.wikipedia.org/wiki/Safety_wire wikipedia on safety wire]
"Typically safety wire is threaded through a hole drilled into a fastener or part, then twisted and anchored to a second fastener or part then twisted again, usually with the aid of safety wire pliers...Although many systems purport to be more efficient than installing traditional safety wire, an advantageous by-product of the twisting method of installing safety wire is that it leaves a highly visible and easily inspectable indication that the fasteners in question are in fact properly secured. In addition, safety wire twisting is a standard, non-proprietary technique, and tools and materials can be easily found..."

[[Category: CAD]]

CAD Standards

2012-02-13T16:40:47Z

MikeA: /* Paint */

{{CADTemplate}}
=Overview=
'''Note: This page is currently just being created. More information to come in the next few weeks. MA - 2011-12-09'''

This page is to create a unified approach to modeling, drafting and design of open source hardware. Please read thoroughly if you will be doing any CAD work.

Discussions of major changes to the standards outlined here should take place in [[CAD Standards Discussions]] before this page is changed.

=Units=
'''Preference:''' It is the preference for all initial designs to be done in metric as that is the standard in the majority of the world. It is easy to get metric sized materials in the US, but often difficult to get imperial sizes in other countries.

'''Standard:''' All designs should be eventually be available in both metric and imperial.

'''Currently:''' On site at FeF, the prototypes are being fabricated with imperial units and material sizes. Because of this the initial CAD for the products developed is done in imperial. Discussion has already begun on the availability of metric materials from local material suppliers

'''Design Conversion:''' Designs must be carefully reviewed as pure mathematical conversions from standard to metric will not yield designs that are able to be fabricated properly as material sizes and shapes vary between the two systems. However with a little time and effort all designs should be able to be converted to metric. Ideally, once a design is finalized we should be able to produce two, slightly different versions of it. Then the user can choose to build using one or the other, depending on what tools/parts are more readily available in that area.

=Drawings=
Creating drawings that follow standardized formats is important in providing a consistent readability and quality of the open source hardware tools. When making drawings, go carefully over the different fields and ensure they are filled out appropriately to the part or assembly you're creating.

*'''[[Sample_Fabrication_Drawing| Sample Fabrication Drawings]]''' - Use these sample fabrication drawings as reference for the standard of drawing quality desired until our own samples are created.

==Title Block==
{| cellpadding="3" cellspacing="0"
|[[File:Titleblockscreenshot.PNG|left|300px]]
|width=400px|The [[Media:Title_Block_B_-_Sheet_1.PDF|OSE Title Block]] is available in ANSI A, B, C, D, and E sizes.

Sheet 1 of any drawing will be the [[Media:Title_Block_B_-_Sheet_1.PDF|full title block]] while sheets 2+ utilize a [[Media:TitleBlockBSheet2.PDF|reduced title block]] that contains only the pertinent information to associate it with Sheet 1.
|}

{| border="1" cellpadding="5" cellspacing="0"
|- style="color:black; background-color:#ffffcc;"
!colspan="8"| OSE Title Block Download
|- style="color:black; background-color:#ffffff;"
!; style="background-color:#ccffcc"| Program
!; style="background-color:#ccffcc"| Extension
!| ANSI A
!| ANSI B
!| ANSI C
!| ANSI D
!| ANSI E
!| Download All
|- align="center"
!|Solidworks
|*.slddrt
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/slddrt.zip Zip]
|- align="center"
!|AutoCAD Template
|*.DWT
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwt.zip Zip]
|- align="center"
!|AutoCAD
|*.DWG
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwg.zip Zip]
|- align="center"
!|General Use
|*.DXF
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dxf.zip Zip]
|- align="center"
!|Alibre
|*.ad_drw
|Place Holder
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.ad_drw 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.ad_drw 2+]
|Place Holder
|Place Holder
|Place Holder
|Place Holder
|}

*'''Lettering:''' All text on the drawing should be done in ''BLOCK LETTERS''.

*'''Units:''' Units and tolerances are in imperial but are easily modified to metric.

*'''Mass:''' Mass should be input in LBS or KG with 3 significant digits and the units afterwards. (0.125KG, 1.25KG, 12.5KG, 125KG)

*'''Need:''' Please provide replication of these title blocks to native formats in other programs if you have the capability to do so and add them to the table. [[CAD_Needs_and_Requests#Title_Block_Conversion|Go here]] to help out

==License Agreement==
Drawings should either not have a license agreement or contain the following text:
* ALL INFORMATION IS RELEASED UNDER THE OSE LICENSE FOR DISTRIBUTIVE ECONOMICS. FOR FURTHER INFORMATION GO TO: OPENSOURCEECOLOGY.ORG/WIKI/LICENSE

==Dimensions==
'''[http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html Engineering Drawing]''' - Some beginner introductions to engineering drawings from MIT
===Tolerances===
===GD&T===
[[File:Gdt_diagram.jpg|thumb|right]]
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each facet of the part.

See the image on the right for a good overview of the different GD&T symbols and what they mean.

====Links====
'''[http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing GD&T Wiki]''' - Wiki on GD&T

'''[http://www.tec-ease.com/gdt-tips.php Free GD&T]''' - Great resource for some free GD&T help

'''[http://www.asme.org/products/codes---standards/dimensioning-and-tolerancing ASME Ordering]''' - You can go here to order the official ASME Y14.5 - 2009 GD&T standard

'''[http://www.advanceddimensionalmanagement.com/gdt_justification.php GD&T Justification]''' - This provides an explanation for why we use GD&T on drawings

==Welding==
===Resources===
* [http://deltaschooloftrades.com/welding_symbols.htm Welding Symbols] - Information on interpreting weld symbols on a drawing
* [http://www.unified-eng.com/scitech/weld/weld.html Weld Symbols] - Additional information on weld symbols

==Drawing Views==
===Standard Views===
===Sections and Detailed Views===
===Third Angle Projection===

==Notes==
All drawing notes should be in BLOCK LETTERS and go on the top left of Sheet 1 under "NOTES:" as seen on this sample drawing (coming soon). Notes should be numbered and if they are used to reference a specific place on the drawing place a hexagon around the number and use that in the drawing views. They can also be placed beside parts on the BOM in a similar fashion.
===Material===
===Fabrication Help===
===URLs===

==Layers==
Although not critical, it is useful to separate out the different aspects of the drawings onto different layers.

Title Block - Layer XX
Dimensions - Layer XX
Model Views - Layer XX

==Bill of Material==
The bill of material (BOM) is used to list all the parts in an assembly or weldment of parts. You can view a sample of this '''here'''. Most CAD packages can automatically create these, however if a manual BOM is required please ensure the following fields are present:
* ITEM NO.
* PART NUMBER
* DESCRIPTION
* QTY

==Vendor Item Drawings==
For items that are purchased, it is often useful to make a drawing of them. The drawing outlines the critical physical dimensions, tolerances and features that are important for space claim and mounting purposes.

In the notes you can also add relevant specifications and a list of vendors.

=Part Numbering and Naming=
==Non-Significant Numbering==
==Part Naming==
==Standard Hardware==

=Revision Level=
Initial design is Revision "-" or no revision. Revisions to the drawings should proceed alphabetically, starting at A and progress from there to B, C, D, etc. If a part is revised over revision level Z, the next revision level shall be AA, AB, AC, etc.

=Part Attributes=
Some useful part attributes to embed into part and assembly files:
* Description
* Part Number (File name)
* Revision
* Material
* Stock Size
* Length

{{Wanted|Need to find out if these get saved across different file types like STEP. This becomes an issue if we're depending on these to create BOMs and MBOMs}}

=Materials=
A-36 or 1010-1020

=Paint=
'''Currently undergoing review and specification.'''

'''Intended use:'''
* Oil base - indoor steel equipment
* Alkyd - outdoor structures
* Two part polyurethane - outdoor equipment
**Tthe polyurethane could be used for all uses with best results. It has some of the best abrasive resistance without going to powder coat. Polyurethane is commonly used for earth moving equipment and military vehicles. It works best with abrasive blasted surface prep, but can be used with a primer used with hand tool or power tool surface prep using wire brush, but with not quite as good performance as prep with abrasive blasting. Will a standard spec OSE shop have blasting equipment? It is a pretty basic capability.

=Standard Hardware=
We will be creating a multi-format database of models of standard hardware based on industry standard sizes (both metric and imperial) that will be freely available to download.
{{Wanted|If you can help us create this database or have one already made please e-mail CAD@opensourceecology.org}}

'''[[CAD Standard Sizes]]''' - Discussion on standard sizes of hardware and materials that should be tried to use more often in designs to facilitate more modular and repairable designs among the GVCS tools.
==Downloadable Database==
Look into [[SKDB]] to see if still relevant.
==Fastening Hardware==
==Hydraulic Fittings Hardware==
==Structural Members==

=Routings=

=Export Formats=

==Models==
* Solidworks Native
* eDrawings
* STEP
* COLLADA
* STL

==Drawings==
* Solidworks Native
* eDrawings
* DXF
* DWG
* PDF

=Bill of Materials vs Manufacturing Bill of Material=

=Design Best Practices=

*[[OSE_Specifications#GVCS_Specifications.2FCore_Values|OSE Core Values]]

===Thread locker vs Lock Washers===
Much research has been done on the usefulness of different types of lock washers and thread locker compounds. For applications where ensuring maintaining torque is required, a thread locker is preferred such as Loctite or Hernon Nuts N Bolts. Split lock washers and other variants of lock washers do not actually help maintain bolt torque and loosen when subjected to vibration. Once loosened however they do help keep the nut and bolt from loosening fully and falling off.

Loctite 243/266 and Hernon Nuts N Bolts 434/439 are all surface insensitive, good for zinc plated and stainless surfaces as well as steel and brass, and allowance for some contamination from oil and grease. Loctite and Hernon Nuts N Bolts are primerless unless a fast cure <1 hour is needed, Permatex 24027 and Cyclo C-24350 recommend surface prep activator for full strength on plated and stainless surfaces.

The Loctite and Hernon are interchangeable with medium and high strength versions, medium for disassembly with hand tools, high for permanent, possible disassembly with heat. Both are used for
screws and bolts size 1/4" to 3/4".

===Safety Wire===
[http://en.wikipedia.org/wiki/Safety_wire wikipedia on safety wire]
"Typically safety wire is threaded through a hole drilled into a fastener or part, then twisted and anchored to a second fastener or part then twisted again, usually with the aid of safety wire pliers...Although many systems purport to be more efficient than installing traditional safety wire, an advantageous by-product of the twisting method of installing safety wire is that it leaves a highly visible and easily inspectable indication that the fasteners in question are in fact properly secured. In addition, safety wire twisting is a standard, non-proprietary technique, and tools and materials can be easily found..."

[[Category: CAD]]

Open Source CAD-CAM Solution for the World

2012-02-12T16:09:58Z

MikeA:

[[CAD-CAM_Problem_Statement]]

[[CAD_(Computer_Aided_Design)]]

[[Digital_Fabrication]]

LifeCat 1.0/Research Development/Previous Design Analysis

2012-02-11T00:09:21Z

MikeA:

==Overview==
Here is some analysis of the LifeTrac III from community members and on-site users

==LifeTrac III User Review==
This is a collection of onsite analysis of the design and user input. It also provides potential solutions for the LifeTrac IV and LifeCat

* '''Non-standard tool loading mechanism means that existing forks and other accessories for Bobcats and such won't work'''
** ''Redesign to incorporate the Bob-Tach attachment method. Also known as the universal skid loader attachment method.
** Can try to still keep simple OSE 3-point attachment for use with smaller tools''
* '''Loading mechanism is too far out'''
** ''Need to redesign to bring it to just in front of the vehicle. Will need to redesign cylinders and lifting arm accordingly. A bent loader arm will suffice.''
* '''Wheel assembly and motor is difficult to mount'''
** ''Change motor to direct coupling to hub. Just rear wheel drive and connected through the tracks. Even with this still need a mechanism for easy attachment for front wheels.''
** ''Redesign current configuration into a modular unit that can be easily bolted on and off. This is being done with the [http://blog.opensourceecology.org/2012/01/quick-connect-wheels-update/ quick connect wheels] for the LifeTrac IV''
* '''Feet can touch the ground because there is no bottom plate and is a very large safety hazard'''
** Mount a bottom skid plate
* '''No head protection from falling debris'''
** ''Need a roof plate''
* '''Seat being so far back makes it difficult to see precisely where loader is for intricate work'''
** ''Move seat forward to mid level of tractor. But have issues with the bars there and everything. Would likely need to move cross members above frame''
* '''Controls are difficult'''
** ''Integrate foot pedals for loader arm and QA plate and rotate hydraulic levers so that they move forward and backwards and are on each side of the user's arms''
* '''Cross members are visual obstructions'''
** Move to above top frame members vs below them to improve visability and head clearance
* '''Tipping stability with lifting heavy objects'''
** ''Due to straight loader arms, tipping load is very low. Additional weight needs to be mounted as far rearward as possible to increase the tipping load and thus the carrying capacity''
* '''No analysis done on any of frame members for structural stability under heavy load'''
** ''FEA needs to be done on the frame. This include an understanding of dynamic load analysis.''
* '''Stock 3x6" comes in 20' and 40'
** ''Keep this in mind for any redesign''
* '''No protection for hydraulic motors from ground objects
** ''Incorporate protective covering or skid plate between motors and ground

==OSE Europe Lifetrac Design Safety Discussion==
Here is the link to the [https://groups.google.com/group/ose-europe/browse_thread/thread/3d0fcd5477ea94a4 full forum discussion].

===Frame===
* No engineering analysis done on any components of the frame for the loads encountered
* When the machines tracks rotate in opposite directions this turns the machine but the load is transferred to the frame. Because the wheels have a gap between them the force is not equally distributed along the bottom of the frame. The force travels through each wheel, to the corners of the base frame square, from there it is transmitted up the vertical frame and along the top square frame, all of the force meets in the center of the top frame along two parallel lines. Here you have placed a very large hole which the loader attaches to. From the top centre of the frame the force from the wheels is then transmitted to the centre of the base frame.
** ''Comment: Conventional machines which use tracks transfer the load from the track through a series of gears which span the entire length of the track and base frame. A conventional skid loader has the hydraulic lifter attached to a separate frame from the drivers cabin, this improves operator safety from moving parts, improves stability over the entire machine and increases load bearing capacity from the chassis I.e. it doesn't snap in half. The machine is most likely to snap in the middle of the bottom and top struts on which the wheels and loader are mounted. So two sets of forces are meeting at one point. This is the force from the wheels and the force from the loader.''
* The construction using tubes bolted through the center is not good for dynamic loading as the bolts need to be sufficiently pre-stressed during assembly. This is not possible with thin-walled square tubing
** ''Comment: What are the proper forces/torques required in pre-stressing the bolts during assembly? From this we can calculate the required material thickness for square tubing to ensure no deformation during tightening.''
* Considerable forces on the frame introduce bending moments on bolts which they are not designed to take
* Questionable engineering practice to place the longitudinal and cross-support members on different planes as it generates additional stress in the design as torsion and bending moments
* ''Potential Frame Solutions''
** Welding the frame members together
** Welding a plate to both frame members to they can be bolted together with several bolts
** Using U-profiles instead of square tubes, You could
*** weld them
*** weld a head-plate to the crosswise frame members and bolt it to the longitudinal frame parts
** Place frame members all in the same plane

===Wheel Motor Coupling===
* Alignment between the motor, coupler, shaft and wheel needs to be precise to prevent failure with time due to the high forces involved.

===Safety===
* No roll-over protection
* No floor, side walls, roof, or restraining devices (''Note:'' These should be getting addressed in LifeTrac IV)
* No independent brake in case of hydraulic pressure loss.

===General Comments===
* Trying to have the LifeTrac be both a skid steer and tractor ends up with a design that doesn't do either well
* Skid steers are very hard on the ground and thus not good for actual farming applications or over grass. However they are great for many other tasks and have a large versatility of tools and attachments otherwise
* Articulated/conventional steering with a longer frame design is much more suited for hauling and dragging machinery

===Bolting Through HSS Tubing===
One of the main design features of the LifeTrac II, III and IV is that the frame is bolted together through the structural members. It has been brought up by various reviewers of the design that that is an incorrect method of bolting tubing together. Further research confirms this as not being structurally sound for designs that must be fully tensioned due to the flexibility of the walls. It does appear that it can be used for solely shear connections where the bolt is chosen appropriately for the load. If this method cannot be avoided, there are specialized bolts that can be used or an insert tube must be welded inside the

'''References'''
* [http://www.eng-tips.com/viewthread.cfm?qid=194566 Eng-Tips Discussion]
* [http://www.euken.net/group/seaoc/mailarchive/2001c/msg01896.html Thru bolting discussion]

CAD Standards

2012-02-04T22:42:33Z

MikeA:

{{CADTemplate}}
=Overview=
'''Note: This page is currently just being created. More information to come in the next few weeks. MA - 2011-12-09'''

This page is to create a unified approach to modeling, drafting and design of open source hardware. Please read thoroughly if you will be doing any CAD work.

Discussions of major changes to the standards outlined here should take place in [[CAD Standards Discussions]] before this page is changed.

=Units=
'''Preference:''' It is the preference for all initial designs to be done in metric as that is the standard in the majority of the world. It is easy to get metric sized materials in the US, but often difficult to get imperial sizes in other countries.

'''Standard:''' All designs should be eventually be available in both metric and imperial.

'''Currently:''' On site at FeF, the prototypes are being fabricated with imperial units and material sizes. Because of this the initial CAD for the products developed is done in imperial. Discussion has already begun on the availability of metric materials from local material suppliers

'''Design Conversion:''' Designs must be carefully reviewed as pure mathematical conversions from standard to metric will not yield designs that are able to be fabricated properly as material sizes and shapes vary between the two systems. However with a little time and effort all designs should be able to be converted to metric. Ideally, once a design is finalized we should be able to produce two, slightly different versions of it. Then the user can choose to build using one or the other, depending on what tools/parts are more readily available in that area.

=Drawings=
Creating drawings that follow standardized formats is important in providing a consistent readability and quality of the open source hardware tools. When making drawings, go carefully over the different fields and ensure they are filled out appropriately to the part or assembly you're creating.

*'''[[Sample_Fabrication_Drawing| Sample Fabrication Drawings]]''' - Use these sample fabrication drawings as reference for the standard of drawing quality desired until our own samples are created.

==Title Block==
{| cellpadding="3" cellspacing="0"
|[[File:Titleblockscreenshot.PNG|left|300px]]
|width=400px|The [[Media:Title_Block_B_-_Sheet_1.PDF|OSE Title Block]] is available in ANSI A, B, C, D, and E sizes.

Sheet 1 of any drawing will be the [[Media:Title_Block_B_-_Sheet_1.PDF|full title block]] while sheets 2+ utilize a [[Media:TitleBlockBSheet2.PDF|reduced title block]] that contains only the pertinent information to associate it with Sheet 1.
|}

{| border="1" cellpadding="5" cellspacing="0"
|- style="color:black; background-color:#ffffcc;"
!colspan="8"| OSE Title Block Download
|- style="color:black; background-color:#ffffff;"
!; style="background-color:#ccffcc"| Program
!; style="background-color:#ccffcc"| Extension
!| ANSI A
!| ANSI B
!| ANSI C
!| ANSI D
!| ANSI E
!| Download All
|- align="center"
!|Solidworks
|*.slddrt
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/slddrt.zip Zip]
|- align="center"
!|AutoCAD Template
|*.DWT
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwt.zip Zip]
|- align="center"
!|AutoCAD
|*.DWG
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwg.zip Zip]
|- align="center"
!|General Use
|*.DXF
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dxf.zip Zip]
|- align="center"
!|Alibre
|*.ad_drw
|Place Holder
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.ad_drw 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.ad_drw 2+]
|Place Holder
|Place Holder
|Place Holder
|Place Holder
|}

*'''Lettering:''' All text on the drawing should be done in ''BLOCK LETTERS''.

*'''Units:''' Units and tolerances are in imperial but are easily modified to metric.

*'''Mass:''' Mass should be input in LBS or KG with 3 significant digits and the units afterwards. (0.125KG, 1.25KG, 12.5KG, 125KG)

*'''Need:''' Please provide replication of these title blocks to native formats in other programs if you have the capability to do so and add them to the table. [[CAD_Needs_and_Requests#Title_Block_Conversion|Go here]] to help out

==License Agreement==
Drawings should either not have a license agreement or contain the following text:
* ALL INFORMATION IS RELEASED UNDER THE OSE LICENSE FOR DISTRIBUTIVE ECONOMICS. FOR FURTHER INFORMATION GO TO: OPENSOURCEECOLOGY.ORG/WIKI/LICENSE

==Dimensions==
'''[http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html Engineering Drawing]''' - Some beginner introductions to engineering drawings from MIT
===Tolerances===
===GD&T===
[[File:Gdt_diagram.jpg|thumb|right]]
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each facet of the part.

See the image on the right for a good overview of the different GD&T symbols and what they mean.

====Links====
'''[http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing GD&T Wiki]''' - Wiki on GD&T

'''[http://www.tec-ease.com/gdt-tips.php Free GD&T]''' - Great resource for some free GD&T help

'''[http://www.asme.org/products/codes---standards/dimensioning-and-tolerancing ASME Ordering]''' - You can go here to order the official ASME Y14.5 - 2009 GD&T standard

'''[http://www.advanceddimensionalmanagement.com/gdt_justification.php GD&T Justification]''' - This provides an explanation for why we use GD&T on drawings

==Welding==
===Resources===
* [http://deltaschooloftrades.com/welding_symbols.htm Welding Symbols] - Information on interpreting weld symbols on a drawing
* [http://www.unified-eng.com/scitech/weld/weld.html Weld Symbols] - Additional information on weld symbols

==Drawing Views==
===Standard Views===
===Sections and Detailed Views===
===Third Angle Projection===

==Notes==
All drawing notes should be in BLOCK LETTERS and go on the top left of Sheet 1 under "NOTES:" as seen on this sample drawing (coming soon). Notes should be numbered and if they are used to reference a specific place on the drawing place a hexagon around the number and use that in the drawing views. They can also be placed beside parts on the BOM in a similar fashion.
===Material===
===Fabrication Help===
===URLs===

==Layers==
Although not critical, it is useful to separate out the different aspects of the drawings onto different layers.

Title Block - Layer XX
Dimensions - Layer XX
Model Views - Layer XX

==Bill of Material==
The bill of material (BOM) is used to list all the parts in an assembly or weldment of parts. You can view a sample of this '''here'''. Most CAD packages can automatically create these, however if a manual BOM is required please ensure the following fields are present:
* ITEM NO.
* PART NUMBER
* DESCRIPTION
* QTY

==Vendor Item Drawings==
For items that are purchased, it is often useful to make a drawing of them. The drawing outlines the critical physical dimensions, tolerances and features that are important for space claim and mounting purposes.

In the notes you can also add relevant specifications and a list of vendors.

=Part Numbering and Naming=
==Non-Significant Numbering==
==Part Naming==
==Standard Hardware==

=Revision Level=
Initial design is Revision "-" or no revision. Revisions to the drawings should proceed alphabetically, starting at A and progress from there to B, C, D, etc. If a part is revised over revision level Z, the next revision level shall be AA, AB, AC, etc.

=Part Attributes=
Some useful part attributes to embed into part and assembly files:
* Description
* Part Number (File name)
* Revision
* Material
* Stock Size
* Length

{{Wanted|Need to find out if these get saved across different file types like STEP. This becomes an issue if we're depending on these to create BOMs and MBOMs}}

=Materials=
A-36 or 1010-1020

=Paint=
'''Currently undergoing review and specification.'''

'''Intended use:'''
* Oil base - indoor steel equipment
* Alkyd - outdoor structures
* Two part polyurethane - outdoor equipment
**Tthe polyurethane could be used for all uses with best results. It has some of the best abrasive
resistance without going to powder coat. Polyurethane is commonly used for earth moving equipment
and military vehicles. It works best with abrasive blasted surface prep, but can be used with a
primer used with hand tool or power tool surface prep using wire brush, but with not quite as good
performance as prep with abrasive blasting. Will a standard spec OSE shop have blasting equipment?
It is a pretty basic capability.

=Standard Hardware=
We will be creating a multi-format database of models of standard hardware based on industry standard sizes (both metric and imperial) that will be freely available to download.
{{Wanted|If you can help us create this database or have one already made please e-mail CAD@opensourceecology.org}}

'''[[CAD Standard Sizes]]''' - Discussion on standard sizes of hardware and materials that should be tried to use more often in designs to facilitate more modular and repairable designs among the GVCS tools.
==Downloadable Database==
Look into [[SKDB]] to see if still relevant.
==Fastening Hardware==
==Hydraulic Fittings Hardware==
==Structural Members==

=Routings=

=Export Formats=

==Models==
* Solidworks Native
* eDrawings
* STEP
* COLLADA
* STL

==Drawings==
* Solidworks Native
* eDrawings
* DXF
* DWG
* PDF

=Bill of Materials vs Manufacturing Bill of Material=

=Design Best Practices=

*[[OSE_Specifications#GVCS_Specifications.2FCore_Values|OSE Core Values]]

===Thread locker vs Lock Washers===
Much research has been done on the usefulness of different types of lock washers and thread locker compounds. For applications where ensuring maintaining torque is required, a thread locker is preferred such as Loctite or Hernon Nuts N Bolts. Split lock washers and other variants of lock washers do not actually help maintain bolt torque and loosen when subjected to vibration. Once loosened however they do help keep the nut and bolt from loosening fully and falling off.

Loctite 243/266 and Hernon Nuts N Bolts 434/439 are all surface insensitive, good for zinc plated and stainless surfaces as well as steel and brass, and allowance for some contamination from oil and grease. Loctite and Hernon Nuts N Bolts are primerless unless a fast cure <1 hour is needed, Permatex 24027 and Cyclo C-24350 recommend surface prep activator for full strength on plated and stainless surfaces.

The Loctite and Hernon are interchangeable with medium and high strength versions, medium for disassembly with hand tools, high for permanent, possible disassembly with heat. Both are used for
screws and bolts size 1/4" to 3/4".
[[Category: CAD]]

CAD Standards

2012-02-04T22:11:14Z

MikeA: /* Design Best Practices */

{{CADTemplate}}
=Overview=
'''Note: This page is currently just being created. More information to come in the next few weeks. MA - 2011-12-09'''

This page is to create a unified approach to modeling, drafting and design of open source hardware. Please read thoroughly if you will be doing any CAD work.

Discussions of major changes to the standards outlined here should take place in [[CAD Standards Discussions]] before this page is changed.

=Units=
'''Preference:''' It is the preference for all initial designs to be done in metric as that is the standard in the majority of the world. It is easy to get metric sized materials in the US, but often difficult to get imperial sizes in other countries.

'''Standard:''' All designs should be eventually be available in both metric and imperial.

'''Currently:''' On site at FeF, the prototypes are being fabricated with imperial units and material sizes. Because of this the initial CAD for the products developed is done in imperial. Discussion has already begun on the availability of metric materials from local material suppliers

'''Design Conversion:''' Designs must be carefully reviewed as pure mathematical conversions from standard to metric will not yield designs that are able to be fabricated properly as material sizes and shapes vary between the two systems. However with a little time and effort all designs should be able to be converted to metric. Ideally, once a design is finalized we should be able to produce two, slightly different versions of it. Then the user can choose to build using one or the other, depending on what tools/parts are more readily available in that area.

=Drawings=
Creating drawings that follow standardized formats is important in providing a consistent readability and quality of the open source hardware tools. When making drawings, go carefully over the different fields and ensure they are filled out appropriately to the part or assembly you're creating.

*'''[[Sample_Fabrication_Drawing| Sample Fabrication Drawings]]''' - Use these sample fabrication drawings as reference for the standard of drawing quality desired until our own samples are created.

==Title Block==
{| cellpadding="3" cellspacing="0"
|[[File:Titleblockscreenshot.PNG|left|300px]]
|width=400px|The [[Media:Title_Block_B_-_Sheet_1.PDF|OSE Title Block]] is available in ANSI A, B, C, D, and E sizes.

Sheet 1 of any drawing will be the [[Media:Title_Block_B_-_Sheet_1.PDF|full title block]] while sheets 2+ utilize a [[Media:TitleBlockBSheet2.PDF|reduced title block]] that contains only the pertinent information to associate it with Sheet 1.
|}

{| border="1" cellpadding="5" cellspacing="0"
|- style="color:black; background-color:#ffffcc;"
!colspan="8"| OSE Title Block Download
|- style="color:black; background-color:#ffffff;"
!; style="background-color:#ccffcc"| Program
!; style="background-color:#ccffcc"| Extension
!| ANSI A
!| ANSI B
!| ANSI C
!| ANSI D
!| ANSI E
!| Download All
|- align="center"
!|Solidworks
|*.slddrt
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.slddrt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.slddrt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/slddrt.zip Zip]
|- align="center"
!|AutoCAD Template
|*.DWT
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwt 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwt 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwt.zip Zip]
|- align="center"
!|AutoCAD
|*.DWG
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dwg 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dwg 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dwg.zip Zip]
|- align="center"
!|General Use
|*.DXF
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/a-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/c-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/d-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-1-ose.dxf 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/e-landscape-sheet-2-ose.dxf 2+]
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/dxf.zip Zip]
|- align="center"
!|Alibre
|*.ad_drw
|Place Holder
|[https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-1-ose.ad_drw 1] [https://bitbucket.org/elifarley/ose-cad/src/tip/sheet-formats/b-landscape-sheet-2-ose.ad_drw 2+]
|Place Holder
|Place Holder
|Place Holder
|Place Holder
|}

*'''Lettering:''' All text on the drawing should be done in ''BLOCK LETTERS''.

*'''Units:''' Units and tolerances are in imperial but are easily modified to metric.

*'''Mass:''' Mass should be input in LBS or KG with 3 significant digits and the units afterwards. (0.125KG, 1.25KG, 12.5KG, 125KG)

*'''Need:''' Please provide replication of these title blocks to native formats in other programs if you have the capability to do so and add them to the table. [[CAD_Needs_and_Requests#Title_Block_Conversion|Go here]] to help out

==License Agreement==
Drawings should either not have a license agreement or contain the following text:
* ALL INFORMATION IS RELEASED UNDER THE OSE LICENSE FOR DISTRIBUTIVE ECONOMICS. FOR FURTHER INFORMATION GO TO: OPENSOURCEECOLOGY.ORG/WIKI/LICENSE

==Dimensions==
'''[http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html Engineering Drawing]''' - Some beginner introductions to engineering drawings from MIT
===Tolerances===
===GD&T===
[[File:Gdt_diagram.jpg|thumb|right]]
Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each facet of the part.

See the image on the right for a good overview of the different GD&T symbols and what they mean.

====Links====
'''[http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing GD&T Wiki]''' - Wiki on GD&T

'''[http://www.tec-ease.com/gdt-tips.php Free GD&T]''' - Great resource for some free GD&T help

'''[http://www.asme.org/products/codes---standards/dimensioning-and-tolerancing ASME Ordering]''' - You can go here to order the official ASME Y14.5 - 2009 GD&T standard

'''[http://www.advanceddimensionalmanagement.com/gdt_justification.php GD&T Justification]''' - This provides an explanation for why we use GD&T on drawings

==Welding==
===Resources===
* [http://deltaschooloftrades.com/welding_symbols.htm Welding Symbols] - Information on interpreting weld symbols on a drawing
* [http://www.unified-eng.com/scitech/weld/weld.html Weld Symbols] - Additional information on weld symbols

==Drawing Views==
===Standard Views===
===Sections and Detailed Views===
===Third Angle Projection===

==Notes==
All drawing notes should be in BLOCK LETTERS and go on the top left of Sheet 1 under "NOTES:" as seen on this sample drawing (coming soon). Notes should be numbered and if they are used to reference a specific place on the drawing place a hexagon around the number and use that in the drawing views. They can also be placed beside parts on the BOM in a similar fashion.
===Material===
===Fabrication Help===
===URLs===

==Layers==
Although not critical, it is useful to separate out the different aspects of the drawings onto different layers.

Title Block - Layer XX
Dimensions - Layer XX
Model Views - Layer XX

==Bill of Material==
The bill of material (BOM) is used to list all the parts in an assembly or weldment of parts. You can view a sample of this '''here'''. Most CAD packages can automatically create these, however if a manual BOM is required please ensure the following fields are present:
* ITEM NO.
* PART NUMBER
* DESCRIPTION
* QTY

==Vendor Item Drawings==
For items that are purchased, it is often useful to make a drawing of them. The drawing outlines the critical physical dimensions, tolerances and features that are important for space claim and mounting purposes.

In the notes you can also add relevant specifications and a list of vendors.

=Part Numbering and Naming=
==Non-Significant Numbering==
==Part Naming==
==Standard Hardware==

=Revision Level=
Initial design is Revision "-" or no revision. Revisions to the drawings should proceed alphabetically, starting at A and progress from there to B, C, D, etc. If a part is revised over revision level Z, the next revision level shall be AA, AB, AC, etc.

=Part Attributes=
Some useful part attributes to embed into part and assembly files:
* Description
* Part Number (File name)
* Revision
* Material
* Stock Size
* Length

{{Wanted|Need to find out if these get saved across different file types like STEP. This becomes an issue if we're depending on these to create BOMs and MBOMs}}

=Materials=
A-36 or 1010-1020

=Standard Hardware=
We will be creating a multi-format database of models of standard hardware based on industry standard sizes (both metric and imperial) that will be freely available to download.
{{Wanted|If you can help us create this database or have one already made please e-mail CAD@opensourceecology.org}}

'''[[CAD Standard Sizes]]''' - Discussion on standard sizes of hardware and materials that should be tried to use more often in designs to facilitate more modular and repairable designs among the GVCS tools.
==Downloadable Database==
Look into [[SKDB]] to see if still relevant.
==Fastening Hardware==
==Hydraulic Fittings Hardware==
==Structural Members==

=Routings=

=Export Formats=

==Models==
* Solidworks Native
* eDrawings
* STEP
* COLLADA
* STL

==Drawings==
* Solidworks Native
* eDrawings
* DXF
* DWG
* PDF

=Bill of Materials vs Manufacturing Bill of Material=

=Design Best Practices=

*[[OSE_Specifications#GVCS_Specifications.2FCore_Values|OSE Core Values]]

===Thread locker vs Lock Washers===
Much research has been done on the usefulness of different types of lock washers and thread locker compounds. For applications where ensuring maintaining torque is required, a thread locker is preferred such as Loctite or Hernon Nuts N Bolts. Split lock washers and other variants of lock washers do not actually help maintain bolt torque and loosen when subjected to vibration. Once loosened however they do help keep the nut and bolt from loosening fully and falling off.

Loctite 243/266 and Hernon Nuts N Bolts 434/439 are all surface insensitive, good for zinc plated and stainless surfaces as well as steel and brass, and allowance for some contamination from oil and grease. Loctite and Hernon Nuts N Bolts are primerless unless a fast cure <1 hour is needed, Permatex 24027 and Cyclo C-24350 recommend surface prep activator for full strength on plated and stainless surfaces.

The Loctite and Hernon are interchangeable with medium and high strength versions, medium for disassembly with hand tools, high for permanent, possible disassembly with heat. Both are used for
screws and bolts size 1/4" to 3/4".
[[Category: CAD]]

LifeTrac IV/Research Development/Wheel drive

2012-02-02T15:09:06Z

MikeA: /* Overview */

=Overview=
This page is to get a better understanding of the engineering and design requirements for the wheel drive assembly.

[[Quick Connect Wheels]] - Quick connect wheels updates are generally posted here.

=Shaft Load Bearing Capacity=
Currently a 1-7/8" shaft is used on the LifeTrac III. Analysis is required to determine if it is strong enough while using standard carbon steel

=Shaft Torsion Limit=
Analysis required for using a single g8 bolt and 2 bolts, with 1-7/8 shaft

Analysis required for shear limit using 3" shaft with 2 g8 bolts, 1". This is for scaling analysis of bulldozer. Goal: 16,000 lb of pushing force for prototype 1 using same design with jackshaft

=Quick Attach Wheel Mounts=
The quick attach wheel mounts challenge at GrabCAD has come to a close. Analysis required on the chosen winner and other entries to try and gain as much insight to the design as possible.

* [http://grabcad.com/challenges/lifetrac-quick-connect-wheels/entries GrabCAD Challenge Results]
* [http://grabcad.com/library/entry-number-2 GrabCAD Challenge Winner] - Winner chosen by Marcin for quick attach mechanism
* [http://grabcad.com/library/wheel-support-life-trac Another GrabCAD Entry] - Interesting points brought up in this entry with regard to the load concerns.

LifeTrac IV/Research Development

2012-02-02T15:06:09Z

MikeA: /* Status */

{{ToolTemplate2|ToolParent=LifeTrac|ToolName=LifeTrac IV}}
[[Category:LifeTrac]]
[[Category:GVCS]]
[[Category:LifeTrac IV]]
==Overview==
This section breaks the design of the LifeTrac into its different systems so that the engineering analysis and design requirements can be more easily understood

==Status==
[[Quick_Connect_Wheels#Update_27JAN2012| Quick Connect Wheel Update]] - After 6spline coupler snapped, currently trialing a double chain sprocket coupler. Advantage: larger radius to withstand 15,000 inch pounds of torque

==Items to Address==
* [[/Design Criteria| Basic vehicle criteria for overall vehicle design]]
** Load carrying capacity
** Vehicle speed
** Vehicle power
** Vehicle weight
** Arm Range of motion
** Attachment plate range of motion
* [[/QA plate| QA Plate to Bobcat Standard]]
* [[/Carrying capacity| Carrying capacity]] of design
* [[/Wheel drive| Wheel drive]] attachment
** Load bearing capacity of shafts
** Torsion limit if shaft using single g8 bolt and 2 bolts, with 1-7/8 shaft
** Shear limit using 3" shaft with 2 g8 bolts, 1". This is for scaling analysis of bulldozer. Goal: 16,000 lb of pushing force for prototype 1 using same design with jackshaft
** Quick attach wheel mounts
* Structural analysis of frame with maximum load
** May have to wait on this until further information is completed. However rough analysis can likely be done in the mean time with the LifeTrac III models to see if there are any major issues of concern.
* Load limit of bulldozer arms based on steel structure
* [[/Improvements| Improvements]]
** Auxiliary hydraulic connection at front
** Floor plate
** Roof plate
** Safety screen around occupant where necessary
** Driver position
** Vehicle control mechanisms
** Field of view improvements
** Head lights
** Optimized hydraulic locations for maximum lifting capacities
** Track design
* [[DVD Wanted List]] - See CAE tasks here

[[Category: LifeTrac]]

LifeTrac IV/Research Development

2012-02-02T15:05:55Z

MikeA: /* Status */

{{ToolTemplate2|ToolParent=LifeTrac|ToolName=LifeTrac IV}}
[[Category:LifeTrac]]
[[Category:GVCS]]
[[Category:LifeTrac IV]]
==Overview==
This section breaks the design of the LifeTrac into its different systems so that the engineering analysis and design requirements can be more easily understood

==Status==
[[Quick_Connect_Wheels#Update_27JAN2012 Quick Connect Wheel Update]] - After 6spline coupler snapped, currently trialing a double chain sprocket coupler. Advantage: larger radius to withstand 15,000 inch pounds of torque

==Items to Address==
* [[/Design Criteria| Basic vehicle criteria for overall vehicle design]]
** Load carrying capacity
** Vehicle speed
** Vehicle power
** Vehicle weight
** Arm Range of motion
** Attachment plate range of motion
* [[/QA plate| QA Plate to Bobcat Standard]]
* [[/Carrying capacity| Carrying capacity]] of design
* [[/Wheel drive| Wheel drive]] attachment
** Load bearing capacity of shafts
** Torsion limit if shaft using single g8 bolt and 2 bolts, with 1-7/8 shaft
** Shear limit using 3" shaft with 2 g8 bolts, 1". This is for scaling analysis of bulldozer. Goal: 16,000 lb of pushing force for prototype 1 using same design with jackshaft
** Quick attach wheel mounts
* Structural analysis of frame with maximum load
** May have to wait on this until further information is completed. However rough analysis can likely be done in the mean time with the LifeTrac III models to see if there are any major issues of concern.
* Load limit of bulldozer arms based on steel structure
* [[/Improvements| Improvements]]
** Auxiliary hydraulic connection at front
** Floor plate
** Roof plate
** Safety screen around occupant where necessary
** Driver position
** Vehicle control mechanisms
** Field of view improvements
** Head lights
** Optimized hydraulic locations for maximum lifting capacities
** Track design
* [[DVD Wanted List]] - See CAE tasks here

[[Category: LifeTrac]]

LifeTrac IV

2012-02-02T15:01:27Z

MikeA: /* Current Design Status */

[[Category:LifeTrac]]
[[Category:GVCS]]
{{ToolTemplate2|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}

=Overview=
LifeTrac IV is the fourth iteration of [[LifeTrac]]. It is a retrofit of existing LifeTrac III's with bent loader arms and [[Quick Attach Wheels]]. Additional load carrying capacity is gained from adding weight to the rear of the vehicle.

We received assistance from GrabCAD on wheel redesign - [http://grabcad.com/challenges/lifetrac-quick-connect-wheels see challenge.] Additional changes may be made in this iteration as well.

=Current Design Status=
One LifeTrac has been retrofitted with the bent loader arms, quick attach wheel plates and additional weight.
* [http://blog.opensourceecology.org/2012/01/quick-connect-wheels-update/ Quick Connect Wheels Blog]
* [[Quick_Connect_Wheels| Quick Connect Wheels Updates]]

=General Specifications=

=Important Links=
* [[/Research_Development| LifeTrac IV Research & Development]]
* [[/Manufacturing Instructions| LifeTrac IV Manufacturing Instructions]]
* [[/Lessons Learned| LifeTrac IV Lessons Learned]]
* '''[[LifeTrac IV Design Analysis]]''' - Go here to help with some of the LifeTrac IV engineering design analysis

=Current Needs=

=Project Leaders=

Talk:Aaron log/Evaluations Forms Beta 01

2012-02-01T01:48:11Z

MikeA:

Like..."most difficult" compared to what? Seems like the most direct comparison would be any other set of plans that are provided so that a person can build something from scratch, with no parts being provided along side the plans. But that would require that the person had done something like that in the past. Maybe the rating can be something more objective. For example, "Were you ever confused as to what the next step in the process was?" or "Were there grammatical errors in the instructions?" or "Did you ever have to search for the specifications you needed?" or "Were any of the descriptions/illustrations ambiguous?" etc. - Matt 31JAN2012
----
This is a good beginning for a ''really important'' aspect of making the Open Source model work. Yay!

We shouldn't encourage the user to describe experience with more than one machine replication on a single form, i.e. dump the plural option in<br>'''What machine(s) have you replicated? '''<br>Perhaps add:<br>'''What other GVCS machines have you replicated (if any)? (Please use a separate feedback form for each replication)'''

I have no problem with the radio buttons 1-5 in difficulty, but there should definitely also be a text box for feedback on the documentation quality (i.e. specific issues and how it could be improved).

I'd suggest a box for something like<br>'''Did you intentionally make any changes/improvements, if so why, and did they work well/achieve your objectives?'''<br> [[User:ChuckH|ChuckH]] 02:11, 1 February 2012 (CET)

Yes thank you for doing this! Now can we have this as a link-able entry in "community feedback" for both entering the feedback and reading it? Similar to how i've changed the LifeTrac navigation to include this easily accessible sub-section: http://opensourceecology.org/wiki/LifeTrac_III/Feedback
- Mike 2012-01-31

Talk:Organizational Mapping

2012-01-30T17:50:28Z

MikeA: Created page with "Are these positions paid? Not paid? Partially paid? Is there going to be a designation between which ones are and aren't. This will likely attract people at different rates. Mike..."

Are these positions paid? Not paid? Partially paid? Is there going to be a designation between which ones are and aren't. This will likely attract people at different rates. Mike - 2012-01-30

LifeCat 1.0/Research Development

2012-01-30T13:39:50Z

MikeA: /* Overview */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

'''[[Design Process| The Design Process]]''' - General overview of the design process

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* '''[[/Features| Desired Features]]''' - List of desired features
* Detailed Specifications - Coming soon

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0/Research Development

2012-01-29T07:00:29Z

MikeA: /* Defined Specifications */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* '''[[/Features| Desired Features]]''' - List of desired features
* Detailed Specifications - Coming soon

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0/Research Development/Features

2012-01-29T06:59:51Z

MikeA: Created page with "==Overview== List of desired features that should try to be worked into the design of the LifeCat ==Safety Features== * Seat belt * Structurally sound occupant enclosure * Scree..."

==Overview==
List of desired features that should try to be worked into the design of the LifeCat

==Safety Features==
* Seat belt
* Structurally sound occupant enclosure
* Screen/glass/clear plastic on sides to ensure limbs cannot get caught in lift arms
* 360deg field of view
* Parking Brake - Hydraulically inactivated - No idea how to do this

==Design Features==
* Bob-Tac Quick Attach - Universal Quick Attach Plate
* Auxiliary hydraulics at lifter arm bend on left side
* Protected hose routing
* Quick couplers
* Maximum reach at flatbed truck height ~ 60"
* Headlights mounting location
* Dome light
* Design for counterweight location
* Cab forward location
* Cup holder - Everyone loves cup holders!
* Adjustable seat - Unlikely though

==Drive Train==
* One hydraulic motor for each side, chain drive to wheels
** Bobcat S630 is using 120 High Strength Chain while other models use 80 HSC
* Chain case
* Wheel mounting that transfers non-rotational load to frame, not axle

==Frame==
* Tie down locations for transport
* Bolt together base frame
** Not sure if actually feasable and maintaining required alignments and strength

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-29T06:39:14Z

MikeA: /* Analyzed Radial Arm Skid Steers */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.bobcat.com/loaders/models/skidsteer/s630 Bobcat S630] - Wheeled
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
{|
| [[File:BobcatS630.png|thumb|200|Bobcat - S630]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
|-
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
[[File:Skidsteer_dimensions.png]]
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&output=html&widget=true'></iframe>
</html>

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

LifeCat 1.0/Research Development

2012-01-29T06:33:14Z

MikeA: /* Defined Specifications */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* [[/Features| Desired Features]] - List of desired features
* Desired and actually achieved features

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0

2012-01-29T06:30:52Z

MikeA: /* Current Needs */

[[Category:LifeTrac]]
[[Category:LifeCat]]
[[Category:GVCS]]
{{Header Tool|ToolParent=LifeTrac|ToolName={{BASEPAGENAME}}}}

==Overview==
LifeCat is a pure skid steer machine that is a parallel project to the LifeTrac. The development process will be slower than the LifeTrac to try and understand some of the more complex dynamics involved in skid steer loading forces. This will allow for the development of a optimized frame with an emphasis on safety, human factors, construction and sound design principals.

It is expected that there will be shared development between the LifeCat and LifeTrac, however there will be difference in the initial design specifications that will necessitate some obvious changes. Additionally LifeCat will be the first machine designed in metric from the start. It could be argued that this should share the LifeTrac name, but the at the core of the LifeTrac the idea is to have a tractor, and this machine will not full fill that requirement.

==Current Design Status==
Early research and development

==General Specifications==
Coming as soon as they're developed!

==Current Needs==
* Lots of [[/Research Development| R&D]] work required! Head over there and start filling in the missing info :D
** Specifically some more information on Industry Standards and pulling out the useful points from the documents that are there
** Find more DIY projects for ideas

==Project Leaders==
* [[Mike Apostol]] - working on this for right now but would love someone to take over as my time is a bit limited

LifeCat 1.0/Research Development

2012-01-29T06:29:03Z

MikeA: /* Industry Standards Research */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* Desired and actually achieved features

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeTrac III/Feedback

2012-01-29T06:00:17Z

MikeA: /* Comments */

{{ToolTemplate2|ToolParent=LifeTrac|ToolName=LifeTrac III}}
=Overview=
There are several ways to provide feedback.

# Use the "Discussion" tab at the top of this page or any other page
# E-mail the project lead listed on the [[LifeTrac III| home page]]
# Post your question or concern on the [http://forum.opensourceecology.org/categories/gvcs-technical-development OSE Forum]
# Edit in your comments below. Please ensure you put a date at the start and your name if desired.

=Comments=
==LifeTrac III User Review==
This is a collection of onsite analysis of the design and user input. It also provides potential solutions for the LifeTrac IV and LifeCat

* '''Non-standard tool loading mechanism means that existing forks and other accessories for Bobcats and such won't work'''
** ''Redesign to incorporate the Bob-Tach attachment method. Also known as the universal skid loader attachment method.
** Can try to still keep simple OSE 3-point attachment for use with smaller tools''
* '''Loading mechanism is too far out'''
** ''Need to redesign to bring it to just in front of the vehicle. Will need to redesign cylinders and lifting arm accordingly. A bent loader arm will suffice.''
* '''Wheel assembly and motor is difficult to mount'''
** ''Change motor to direct coupling to hub. Just rear wheel drive and connected through the tracks. Even with this still need a mechanism for easy attachment for front wheels.''
** ''Redesign current configuration into a modular unit that can be easily bolted on and off. This is being done with the [http://blog.opensourceecology.org/2012/01/quick-connect-wheels-update/ quick connect wheels] for the LifeTrac IV''
* '''Feet can touch the ground because there is no bottom plate and is a very large safety hazard'''
** Mount a bottom skid plate
* '''No head protection from falling debris'''
** ''Need a roof plate''
* '''Seat being so far back makes it difficult to see precisely where loader is for intricate work'''
** ''Move seat forward to mid level of tractor. But have issues with the bars there and everything. Would likely need to move cross members above frame''
* '''Controls are difficult'''
** ''Integrate foot pedals for loader arm and QA plate and rotate hydraulic levers so that they move forward and backwards and are on each side of the user's arms''
* '''Cross members are visual obstructions'''
** Move to above top frame members vs below them to improve visability and head clearance
* '''Tipping stability with lifting heavy objects'''
** ''Due to straight loader arms, tipping load is very low. Additional weight needs to be mounted as far rearward as possible to increase the tipping load and thus the carrying capacity''
* '''No analysis done on any of frame members for structural stability under heavy load'''
** ''FEA needs to be done on the frame. This include an understanding of dynamic load analysis.''
* '''Stock 3x6" comes in 20' and 40'
** ''Keep this in mind for any redesign''
* '''No protection for hydraulic motors from ground objects
** ''Incorporate protective covering or skid plate between motors and ground

==OSE Europe Lifetrac Design Safety Discussion==
Here is the link to the [https://groups.google.com/group/ose-europe/browse_thread/thread/3d0fcd5477ea94a4 full forum discussion].

===Frame===
* No engineering analysis done on any components of the frame for the loads encountered
* When the machines tracks rotate in opposite directions this turns the machine but the load is transferred to the frame. Because the wheels have a gap between them the force is not equally distributed along the bottom of the frame. The force travels through each wheel, to the corners of the base frame square, from there it is transmitted up the vertical frame and along the top square frame, all of the force meets in the center of the top frame along two parallel lines. Here you have placed a very large hole which the loader attaches to. From the top centre of the frame the force from the wheels is then transmitted to the centre of the base frame.
** ''Comment: Conventional machines which use tracks transfer the load from the track through a series of gears which span the entire length of the track and base frame. A conventional skid loader has the hydraulic lifter attached to a separate frame from the drivers cabin, this improves operator safety from moving parts, improves stability over the entire machine and increases load bearing capacity from the chassis I.e. it doesn't snap in half. The machine is most likely to snap in the middle of the bottom and top struts on which the wheels and loader are mounted. So two sets of forces are meeting at one point. This is the force from the wheels and the force from the loader.''
* The construction using tubes bolted through the center is not good for dynamic loading as the bolts need to be sufficiently pre-stressed during assembly. This is not possible with thin-walled square tubing
** ''Comment: What are the proper forces/torques required in pre-stressing the bolts during assembly? From this we can calculate the required material thickness for square tubing to ensure no deformation during tightening.''
* Considerable forces on the frame introduce bending moments on bolts which they are not designed to take
* Questionable engineering practice to place the longitudinal and cross-support members on different planes as it generates additional stress in the design as torsion and bending moments
* ''Potential Frame Solutions''
** Welding the frame members together
** Welding a plate to both frame members to they can be bolted together with several bolts
** Using U-profiles instead of square tubes, You could
*** weld them
*** weld a head-plate to the crosswise frame members and bolt it to the longitudinal frame parts
** Place frame members all in the same plane

===Wheel Motor Coupling===
* Alignment between the motor, coupler, shaft and wheel needs to be precise to prevent failure with time due to the high forces involved.

===Safety===
* No roll-over protection
* No floor, side walls, roof, or restraining devices (''Note:'' These should be getting addressed in LifeTrac IV)
* No independent brake in case of hydraulic pressure loss.

===General Comments===
* Trying to have the LifeTrac be both a skid steer and tractor ends up with a design that doesn't do either well
* Skid steers are very hard on the ground and thus not good for actual farming applications or over grass. However they are great for many other tasks and have a large versatility of tools and attachments otherwise
* Articulated/conventional steering with a longer frame design is much more suited for hauling and dragging machinery

LifeTrac IV/Research Development

2012-01-29T05:54:48Z

MikeA:

{{ToolTemplate2|ToolParent=LifeTrac|ToolName=LifeTrac IV}}
[[Category:LifeTrac]]
[[Category:GVCS]]
[[Category:LifeTrac IV]]
==Overview==
This section breaks the design of the LifeTrac into its different systems so that the engineering analysis and design requirements can be more easily understood

==Status==
6 spline shaft between [[15,000 Inch Pound Motor]] and wheel shaft snapped at Factor e Farm on 1/18/12. Evaluating solution path.

==Items to Address==
* [[/Design Criteria| Basic vehicle criteria for overall vehicle design]]
** Load carrying capacity
** Vehicle speed
** Vehicle power
** Vehicle weight
** Arm Range of motion
** Attachment plate range of motion
* [[/QA plate| QA Plate to Bobcat Standard]]
* [[/Carrying capacity| Carrying capacity]] of design
* [[/Wheel drive| Wheel drive]] attachment
** Load bearing capacity of shafts
** Torsion limit if shaft using single g8 bolt and 2 bolts, with 1-7/8 shaft
** Shear limit using 3" shaft with 2 g8 bolts, 1". This is for scaling analysis of bulldozer. Goal: 16,000 lb of pushing force for prototype 1 using same design with jackshaft
** Quick attach wheel mounts
* Structural analysis of frame with maximum load
** May have to wait on this until further information is completed. However rough analysis can likely be done in the mean time with the LifeTrac III models to see if there are any major issues of concern.
* Load limit of bulldozer arms based on steel structure
* [[/Improvements| Improvements]]
** Auxiliary hydraulic connection at front
** Floor plate
** Roof plate
** Safety screen around occupant where necessary
** Driver position
** Vehicle control mechanisms
** Field of view improvements
** Head lights
** Optimized hydraulic locations for maximum lifting capacities
** Track design
* [[DVD Wanted List]] - See CAE tasks here

[[Category: LifeTrac]]

File:LifeCat 1.0.png

2012-01-29T00:17:51Z

MikeA: uploaded a new version of "File:LifeCat 1.0.png"

LifeCat 1.0/Research Development

2012-01-29T00:17:05Z

MikeA: /* Concept Generation & Sub Component Engineering */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.
** Example 1: The "Safe Working Load" is described as half the tipping load (provided it meets structural safety factors as well)
** Example 2: The tipping load is measured using a mass placed 500mm from the edge of the quick attach plate when the loader arms are at the farthest horizontal point away from the front axle

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* Desired and actually achieved features

==Concept Generation & Sub Component Engineering==
[[File:LifeCatSpaceClaim.png|thumb|right|Initial LifeCat Space Claim]]
* General overview concept
** You can see in the image to the right, the initial space claim is being worked on. The space claim helps define different sub-systems and the area they can occupy without interfering with each other.
** This space claim shows:
*** Max height = 1900mm
*** Length = 2600mm
*** Overall Width = 1750mm
*** Wheelbase = 1100mm
*** Ground Clearnace = 180mm
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Systems===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

File:LifeCatSpaceClaim.png

2012-01-29T00:12:08Z

MikeA: LifeCat 1.0 Space Claim

LifeCat 1.0 Space Claim

File:BobcatS630.png

2012-01-28T20:00:46Z

MikeA: uploaded a new version of "File:BobcatS630.png": Bobcat S630

Bobcat S630

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T19:57:58Z

MikeA: /* Analyzed Radial Arm Skid Steers */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.bobcat.com/loaders/models/skidsteer/s630 Bobcat S30] - Wheeled
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
{|
| [[File:BobcatS630.png|thumb|200|Bobcat - S630]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
|-
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
[[File:Skidsteer_dimensions.png]]
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&output=html&widget=true'></iframe>
</html>

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

File:BobcatS630.png

2012-01-28T19:55:42Z

MikeA: Bobcat S630

Bobcat S630

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T19:10:58Z

MikeA: /* Side-by-Side Comparison */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled

{|
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
[[File:Skidsteer_dimensions.png]]
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&output=html&widget=true'></iframe>
</html>

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T19:09:56Z

MikeA: /* Side-by-Side Comparison */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled

{|
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
[[File:Skidsteer_dimensions.png]]
<html>
<iframe width='500' height='300' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&output=html&widget=true'></iframe>
</html>

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

LifeCat 1.0/Research Development

2012-01-28T18:30:28Z

MikeA: /* Sub Components */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.
** Example 1: The "Safe Working Load" is described as half the tipping load (provided it meets structural safety factors as well)
** Example 2: The tipping load is measured using a mass placed 500mm from the edge of the quick attach plate when the loader arms are at the farthest horizontal point away from the front axle

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* Desired and actually achieved features

==Concept Generation & Sub Component Engineering==
* General overview concept
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Components===
* Frame
* Lift Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T18:17:02Z

MikeA: /* Side-by-Side Comparison */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled

{|
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
[[File:Skidsteer_dimensions.png]]
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&single=true&gid=0&output=html&widget=true'></iframe>
</html>

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

Talk:LifeTrac III/Manufacturing Instructions

2012-01-28T18:02:16Z

MikeA: /* organizing */

==organizing==

* i believe much of the content on the page now should be forked to a page for the frame. any objections? --[[User:Dorkmo|Dorkmo]] 01:51, 25 December 2011 (CET)
** Go for it! - MA - 2012-01-28

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T03:13:59Z

MikeA: /* Additional Information */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled

{|
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&single=true&gid=0&output=html&widget=true'></iframe>
</html>
[[File:Skidsteer_dimensions.png]]

==Additional Information==
===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

LifeCat 1.0/Research Development/Commercial Designs Research

2012-01-28T03:13:44Z

MikeA: /* Further Resources */

[[Category:LifeTrac]]
[[Category:LifeCat]]
==Overview==
This page tries to collect key specifications, design features and provide links to commercial designs for comparative analysis and to generate realistic specifications for our vehicle.

==Analyzed Radial Arm Skid Steers==
# [http://www.newholland200series.com/images/stories/pdf/CTL-Prelim-Brochure_CE.pdf New Holland C227] - Tracked
# [http://www.newholland200series.com/images/stories/pdf/nhag_200SSL_brochure_NH31021371.pdf New Holland L215] - Wheeled
# [http://www.bobcat.com/loaders/models/skidsteer/s160 Bobcat S160] - Wheeled

{|
| [[File:NH-C227-1.jpg|thumb|200px|New Holland - C227]]
| [[File:NH-L215-1.jpg|thumb|225px|New Holland - L215]]
| [[File:Bobcat-S160-2.jpg|thumb|150px|Bobcat - S160]]
|}

==Interesting Design Features==
===Bobcat S160===
* Bob-Tach quick attach system
* Keel shaped undercarriage that gives you higher ground clearance and sheds debris to the outside much like the way a “V” shaped boat slices through water
* Automatic shutdown in case of engine or hydraulic malfunction
* Chaincase is the only maintenance-free chaincase in the industry with exclusive fixed axle tubes, stronger axles, fully sealed bearings, plus the largest chains in the industry.
* Axle bearings are automatically lubricated with chaincase oil—so they never need greasing.
* ''Radius lift path provides maximum reach at truck bed height''
* Single plane design of Bobcat loader lift arms is superior to other machines. We keep every pin and connecting point in the same plane, greatly reducing the side deflection of the lift arm. This stronger design leads to longer lift arm life because there is less chance of failure and better wearing.

==Side-by-Side Comparison==
<html>
<iframe width='800' height='600' frameborder='0' src='https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AurGPKHeupwUdDBUNmhQa3JDa2hlc2ttai10QnhnSFE&single=true&gid=0&output=html&widget=true'></iframe>
</html>
[[File:Skidsteer_dimensions.png]]

==Additional Information==
===Mid-Size Skid Steer Standards===
[http://georgiakrause.com/uploads/Armed_and_Ready-MachineMatters.pdf Source Article]
* Bucket breakout forces as high as 7532lbs (Volvo's MC80B)
* Lifting forces as high as 6800lbs (Komatsu's SK1020-5)
* Wheel base usually 40-49"
* High and low flow options
* Vertical lift arm
** Use more complex linkages at the rear to lift bucket straight up
** More upward reach at max height. Good for applications of stacking pallets of heavy materials in storage areas
** Better at lift and loading loose material into a dump truck
** More consistent and precision when using attachments that break, pound or grind
* Radial lift arm
** Simple arm connected by single pin
** Starts at low position and close to body of vehicle then follows arc of travel
** Better at digging into pile of material and loading it over lower barriers
** Better at moving heavy loose materials low to the ground
** Work well with attachment that trench, rake and pull

===Further Resources===
* [http://www.simplyskidsteers.com/ Simply Skid Steers] - Good information for comparison of many different types of skid steers.
* [http://www.ritchiespecs.com/searchresults?type=&category=Skid%20Steer%20Loader Richie Specs] - Great tool for comparing specs on skid steers or any other type of equipment

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T03:10:30Z

MikeA:

==Overview==
This page captures some of the industry standards for skid loaders. This is in regard to safety items, standards of testing, etc.

==Safety==
* '''[[:File:Skid_Steer_Safety.pdf | Skid Steer Design Safety]]''' - Good document that contains pertinent information about designing a safe skid steer. Includes ROPS and logical interlocks.
* '''[http://en.wikipedia.org/wiki/Roll_over_protection_structure ROPS Wiki]''' - The wiki on the Roll Over Protection System (ROPS). Discusses the certification requirements and such.
* [[:File:Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls
* [http://www.osha.gov/pls/oshaweb/owasrch.search_form?p_doc_type=STANDARDS&p_toc_level=1&p_keyvalue=1928 US Occup. Safety and Health Standards for Agriculture] - US Department of Labour information on the safety and health standards for Agricultural vehicles

==Design==
* Radial arm tractors usually have max reach at 60" which is the height of a flatbed truck.
* "Safe Working Load" is defined as half the tipping load (provided it meets structural safety factors as well)
* [[:File:Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Testing==
* [http://www.oecd.org/document/10/0,3746,en_2649_33905_34735882_1_1_1_1,00.html OECD Standard Codes] - For the Official Testing of Agricultural and Forestry Tractors 2011
* [[:File:USTractorTestingAnalysis.pdf| Agricultural Tractor Test Standards in America]] - University report that talks about all the different standards associated with tractors and their respective governing bodies and their local vs global reach.

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T03:05:18Z

MikeA:

==Overview==
This page captures some of the industry standards for skid loaders. This is in regard to safety items, standards of testing, etc.

==Safety==
* '''[[Skid_Steer_Safety.pdf | Skid Steer Design Safety]]''' - Good document that contains pertinent information about designing a safe skid steer. Includes ROPS and logical interlocks.
* '''[http://en.wikipedia.org/wiki/Roll_over_protection_structure ROPS Wiki]''' - The wiki on the Roll Over Protection System (ROPS). Discusses the certification requirements and such.
* [[:File:Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Design==
* Radial arm tractors usually have max reach at 60" which is the height of a flatbed truck.
* "Safe Working Load" is defined as half the tipping load (provided it meets structural safety factors as well)
* [[:File:Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Testing==
* [http://www.oecd.org/document/10/0,3746,en_2649_33905_34735882_1_1_1_1,00.html OECD Standard Codes] - For the Official Testing of Agricultural and Forestry Tractors 2011
* [[:File:USTractorTestingAnalysis.pdf| Agricultural Tractor Test Standards in America]] - University report that talks about all the different standards associated with tractors and their respective governing bodies and their local vs global reach.

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T03:04:57Z

MikeA:

==Overview==
This page captures some of the industry standards for skid loaders. This is in regard to safety items, standards of testing, etc.

==Safety==
* '''[[Skid_Steer_Safety.pdf | Skid Steer Design Safety]]''' - Good document that contains pertinent information about designing a safe skid steer. Includes ROPS and logical interlocks.
* '''[http://en.wikipedia.org/wiki/Roll_over_protection_structure ROPS Wiki]''' - The wiki on the Roll Over Protection System (ROPS). Discusses the certification requirements and such.
* [[Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Design==
* Radial arm tractors usually have max reach at 60" which is the height of a flatbed truck.
* "Safe Working Load" is defined as half the tipping load (provided it meets structural safety factors as well)
* [[Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Testing==
* [http://www.oecd.org/document/10/0,3746,en_2649_33905_34735882_1_1_1_1,00.html OECD Standard Codes] - For the Official Testing of Agricultural and Forestry Tractors 2011
* [[:File:USTractorTestingAnalysis.pdf| Agricultural Tractor Test Standards in America]] - University report that talks about all the different standards associated with tractors and their respective governing bodies and their local vs global reach.

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T03:04:35Z

MikeA:

==Overview==
This page captures some of the industry standards for skid loaders. This is in regard to safety items, standards of testing, etc.

==Safety==
* '''[[Skid_Steer_Safety.pdf | Skid Steer Design Safety]]''' - Good document that contains pertinent information about designing a safe skid steer. Includes ROPS and logical interlocks.
* '''[http://en.wikipedia.org/wiki/Roll_over_protection_structure ROPS Wiki]''' - The wiki on the Roll Over Protection System (ROPS). Discusses the certification requirements and such.
* [[Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Design==
* Radial arm tractors usually have max reach at 60" which is the height of a flatbed truck.
* "Safe Working Load" is defined as half the tipping load (provided it meets structural safety factors as well)
* [[File:Tractor_Safety_and_Control_Standards.pdf| Control Standards]] - Provides information to match the standards for tractor controls

==Testing==
* [http://www.oecd.org/document/10/0,3746,en_2649_33905_34735882_1_1_1_1,00.html OECD Standard Codes] - For the Official Testing of Agricultural and Forestry Tractors 2011
* [[:File:USTractorTestingAnalysis.pdf| Agricultural Tractor Test Standards in America]] - University report that talks about all the different standards associated with tractors and their respective governing bodies and their local vs global reach.

File:Tractor Safety and Control Standards.pdf

2012-01-28T03:02:34Z

MikeA: Controls and safety standards for Tractor operation

Controls and safety standards for Tractor operation

LifeCat 1.0/Research Development

2012-01-28T03:01:35Z

MikeA: /* Sub Components */

{{Header Tool|ToolName={{BASEPAGENAME}}|ToolParent=LifeTrac}}
[[Category:LifeTrac]]
[[Category:LifeCat]]

==Overview==
The research and development of the LifeCat is critical in creating a end product that will perform well and be a great tool and safe for the user.

==Background Research==
===[[/Commercial Designs Research| Commercial Designs Research]]===
* Key Design Features
* Pros and Cons to different designs
* Links

===[[/Previous Design Analysis| Previous Design Analysis]]===
* Collection and analysis of the lessons learned from previous LifeTrac versions and community feedback.

===[[/Industry Standards Research| Industry Standards Research]]===
* Analysis of required law compliance.
**This is for stuff like safety requirements. It is perhaps not required to meet these, but an analysis and understanding of the purpose of these laws is important to justify complaince or non-compliance. Also it provides a good base for design.
* Industry Specification Standards
** Similar to law compliance, this is for background research, compliance is not necessary but an understanding of how things are normally measured and built is useful.
** Example 1: The "Safe Working Load" is described as half the tipping load (provided it meets structural safety factors as well)
** Example 2: The tipping load is measured using a mass placed 500mm from the edge of the quick attach plate when the loader arms are at the farthest horizontal point away from the front axle

===[[/Additional Resources| Additional Resources]]===
* Links to DIY tractors and other resoures

==Defined Specifications==
* Desired and actually achieved features

==Concept Generation & Sub Component Engineering==
* General overview concept
* Detailed Design
* Human Factors Analysis
* CAD Models
===Sub Components===
* Frame
* Arm
* Quick Attach
* Hydraulics
* Drive System
* Occupant Area
* Control Methods
* Additional Features

==Prototypes==
* Pictures, Videos, Discussions, Analysis, Performance Review

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T02:54:42Z

MikeA: /* Testing */

File:USTractorTestingAnalysis.pdf

2012-01-28T02:54:30Z

MikeA: Analysis of Tractor standards and how they relate to each other

Analysis of Tractor standards and how they relate to each other

LifeCat 1.0/Research Development/Industry Standards Research

2012-01-28T02:53:42Z

MikeA:

LifeCat 1.0/Research Development/Additional Resources

2012-01-28T02:40:18Z

MikeA: /* DIY Projects */

==Overview==
Links and information for other DIY projects and relevant information. This could include standards for frame design to links for sizing buckets.

==DIY Projects==
* [http://kramerville.net/mbn/ubbthreads.php?ubb=showflat&Number=5514#Post5514 Articulating Tractor DIY 1] - Interesting in progress DIY tractor with some good ideas
* [http://kramerville.net/mbn/ubbthreads.php?ubb=showflat&Number=1531#Post1531 Articulating Tractor DIY 2] - In progress DIY tractor
* [http://www.tractorbynet.com/forums/build-yourself/221521-another-mini-dozer.html Mini BullDozer] - Very polished work on a mini-dozer

==Useful Resources==
* [http://kramerville.net/mbn/ Machine Builders Forum]
* [http://www.tractorbynet.com/forums/ TractorByNet] - Great forum for all things tractor related
* [http://www.mini-skid-steer.com/ Mini Skid Steer] - Purchasable plans for a mini-skid steer with some good images
* [http://www.cadplans.com/index.htm CadPlans Corp] - CADTrac Site, what the initial LifeTrac design inspired fro

LifeCat 1.0/Research Development/Additional Resources

2012-01-28T02:20:15Z

MikeA: /* Useful Resources */

==Overview==
Links and information for other DIY projects and relevant information. This could include standards for frame design to links for sizing buckets.

==DIY Projects==
* [http://kramerville.net/mbn/ubbthreads.php?ubb=showflat&Number=5514#Post5514 Articulating Tractor DIY 1] - Interesting in progress DIY tractor with some good ideas
* [http://kramerville.net/mbn/ubbthreads.php?ubb=showflat&Number=1531#Post1531 Articulating Tractor DIY 2] - In progress DIY tractor

==Useful Resources==
* [http://kramerville.net/mbn/ Machine Builders Forum]
* [http://www.tractorbynet.com/forums/ TractorByNet] - Great forum for all things tractor related
* [http://www.mini-skid-steer.com/ Mini Skid Steer] - Purchasable plans for a mini-skid steer with some good images
* [http://www.cadplans.com/index.htm CadPlans Corp] - CADTrac Site, what the initial LifeTrac design inspired fro