Torch Table Build: Difference between revisions

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=Proposal=
#redirect [[CNC Torch Table/Manufacturing Instructions]]
 
See proposal at http://openfarmtech.org/Lawrence_Proposal.pdf . <BR> <BR>
You can also see the working agreement,[[Lawrence Kincheloe Contract]]
<BR>
 
The purpose of this project is to enrich both the participant and the Factor e Farm project. The scope of this specific project is to build the seeds for a MegaRap, which is a modification of the origional Torch Table designed to expand the range of build materials and capabilities. This is in the spirit of the RepRap project, but at a larger scale and lower precision. The initial goal is to design and build a torch table that can be added on to in the future but is still functional in its own right.
[[Image:Overview.jpg]]
 
=Design Rationale=
 
*Rack for x motion - cheapest, most robust solution for precise motion
*Spring-loaded x and y motors
 
=Bill of Materials=
Bill of Materials
5172T12$2.50 per Pack
{|
!Item
!Number
!Cost
!Further Info
!Purpose
!Aquired?
|-
|Computer
|1
|$300 or less
|http://www.linuxcnc.org/
|To run Linux cnc IBM Laptop
|Xylotex 4 Axis Drive Box with 425 oz.in. Motors and Cables 1 $460.00 |Xylotex Stepper and controller
|To provide motion control and movement precision Yes
|V-Groove Bearings 3/8 inch
|12+(spares)
|$9.95 each, $119.4 + (S&H + spares)
|VXB V-Groove bearings
|To provide low friction linear motion
 
|Hot rolled steel 2"x1/8" plate
|3 feet
|
|4ft 1 $10.00 $10.00
|Early MechMate photo
 
|Metalsdepot
|To provide material for motor mounts
 
|Hot rolled steel 1"x1" square tubes 16 gauge
|35 feet
 
|MetalsDepot
|To provide structural support
|
|200011 (1/2” sq. x 72” 20 DP 20 Deg) 4-5 $24.80 each, $99.2 to $124 |Standard Steel Specialty Track for linear motion
|3 x 1/8  inch cold rolled Plate
|35 feet
|MetalsDepot
|To provide material to make rails
|
|Bolts 3/8 inch, 1 1/2inch long
|12+(spares)
| $7.46 per Pack of 50 McMaster
|For attaching V-Groove Bearings
|
|3/8 inch threaded rod 6 inches long 8 + (spares)
|McMaster
|for connecting the top and bottom carage
|3/8 inch nuts lots
|Part Number:  90473A031 For locking threaded rod in place
|3/8 inch washers lots
|Part Number:  90126A031 For locking nuts and for spacers
|1/4 inch washers lots
|McMaster for holding against stepper motors
|1/4 inch nuts
|
|McMaster for spacers and such
|Bolts 1/4 inch dia. , 1 3/4 inch long
|less than 100
|
|McMaster
|For attaching through walls of 1 inch square tube, 1/8th steel bar, and into |gear rack
|
|Steel Plain Bore 14-1/2 Deg Spur Gear 20 Pitch, 20 Teeth, 1" Pitch Diameter, |3/8" Bore
|3
|$15.37 Each
|$46.11
|McMaster
|Attaches to stepper motors and interfaces with gear rack
|5172T12
|
|1327K113
|
|
|
|Part Number:  5912K12
|
|6412K11
|thrust bearing 3/16" 16 $1.96 Each, $31.36 Total / $1.05 Each, $16.80 |Total Ball bearings
|Part Number:  6655K12 /
|Nylon
|Part Number:  2797T1 allows the motor to swing freely
|sleeve bearing
|$1.34 each, $5.36 total From McMaster, Part Number:  6391K143 to |connect between the stepper motor and the gear, will also add a bit of |adjustable length
|support flange sleeve bearing 4 $0.59 Each, $2.36 Total Part |Number:  2938T14 support gear
|10 gauge bolts
| $7.78 per Pack of 50 Part Number:  92610A245 stepper
|10 gauge nuts
| $1.54 per Pack of 100 90480A011 stepper
|Washers
|100
|$2.50 per Pack Part Number:  95601A330 Holding bearings
|Grease
|1 cheap
|For greasing rails
|z axis tension spring 1 $7.93 per Pack of 1 Part Number:  9640K244 |returns z axis head to safe position
|stepper saftey spring 4 $10.00 per Pack of 6 Part Number:  3114T79 |
|
|cutting lubricant
|Kerosene
|1/2 gallon
|$10
|Wikipedia Cutting Fluid
|Tapping holes and such, might not be needed
|
|
|8 Skateboard Bearing:Sealed:ABEC-7|
|
|2
|$9.95
|VXB For 45 degree runner carriage for angle grinder, and under rack|
|
Total 1 Approx. $1582
|Torch Table Wiki
 
|one torch table, sans  stepper motors, tools, and torch
 
|}
 
 
=Working Concepts=
==X axis==
[[Image:xaxisconcept.jpg]]
 
[[Image:X axis back view.jpg]]
[[Image:X axis front view .jpg]]
[[Image:X axis top plate stepper mount and y axis mount.jpg]]
[[Image:X axis bearing shot wire frame.jpg]]
[[Image:X axis bearing shot.jpg]]
[[Image:X axis barrel .jpg]]
 
==Y axis==
[[Image:yaxisconcept.jpg]]
 
 
[[Image:Y axis back view.jpg]]
 
 
==Z axis==
[[Image:zaxisconcept.jpg]]
 
[[File:Y axis z axis front view.jpg]]
[[Image:Z axis shot.jpg]]
=Blender Concept=
 
[[Image:torchconceptlawrence.jpg]]
 
[[File:Factor e Torch Alpha 3.blend]]
=Torch vs. Plasma Cutter=
*Comes down to initial cost versus long-term cost
*Plasma cutters - consumables cost $20 for 5 new electrodes and nozzle heads
**Electrodes are rated for 45 minutes to 60 minutes for 1/2" steel
**More expensive versions state they last 4 times longer - are heavier and have better temperature control
**For anything above 1 inch, torch is better
 
 
=Team=
*Deep in the continental US underground...
[[Image:workteam.jpg]]
[[Category:Torch Table]]

Latest revision as of 00:10, 20 August 2011

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