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|500px]]
 
=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
{| border="1"
!Item
!Number
!Cost
!Further Info
!Purpose
!Aquired?
|-
|Computer
|1
|$300 or less
|http://www.linuxcnc.org/
|To run Linux cnc
|yes, 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
|no
|-
|Hot rolled steel 2"x1/8" plate
|4 feet
|4ft 1 $10.00 $10.00
|Metalsdepot
|To provide material for motor mounts
|no
|-
|Hot rolled steel 1"x1" square tubes 16 gauge
|35 feet
|
|MetalsDepot
|To provide structural support
|no
|-
|200011 (1/2” sq. x 72” 20 DP 20 Deg)
|4-5
|$24.80 each, $99.2 to $124
|Standard Steel Specialty
|rack for gear to ride on
|yes
|-
|Track for linear motion
|3 x 1/8  inch cold rolled Plate
|35 feet
|MetalsDepot
|To provide material to make rails
|no
|-
|Bolts 3/8 inch, 1 1/2inch long
|12+(spares)
| $7.46 per Pack of 50 McMaster
|McMaster
|For attaching V-Groove Bearings
|no
|-
|3/8 inch threaded rod 6 inches long
|8 + (spares)
|
|McMaster
|for connecting the top and bottom carage
|no
|-
|3/8 inch nuts lots
|
|
|Part Number:  90473A031
|For locking threaded rod in place
|no
|-
|3/8 inch washers
|lots
|
|Part Number:  90126A031
|For locking nuts and for spacers
|no
|-
|1/4 inch washers lots
|
|McMaster
|for holding against stepper motors
|no
|-
|1/4 inch nuts
|lots
|
|McMaster
|for spacers and such
|no
|-
|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
|no
|-
|Steel Plain Bore 14-1/2 Deg Spur Gear 20 Pitch, 20 Teeth, 1" Pitch Diameter, |3/8" Bore
|4
|$15.37 Each Total $46.11
|McMaster 5172T12, 1327K113, Part Number:  5912K12, 6412K11
|Attaches to stepper motors and interfaces with gear rack
|no
|-
|thrust bearing 3/16"
|16
|$1.96 Each, $31.36 Total / $1.05 Each, $16.80 Total
|
|
|no
|-
|
|
|Thrust Bearing
|Nylon Part Number:  2797T1
|allows the motor to swing freely
|no
|-
|sleeve bearing
|4
|$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
|no
|-
|support flange sleeve bearing
|4
|$0.59 Each, $2.36 Total
|Part |Number:  2938T14
|support gear
|no
|-
|10 gauge bolts
|lots
| $7.78 per Pack of 50
|Part Number:  92610A245
|stepper
|no
|-
|10 gauge nuts
|lots
| $1.54 per Pack of 100
|McMaster 90480A011
|stepper
|no
|-
|Washers
|100
|$2.50 per Pack
|Part Number:  95601A330
|Holding bearings
|no
|-
|Grease
|1
|cheap
|McMaster
|For greasing rails
|no
|-
|z axis tension spring
|1
|$7.93 per Pack of 1
|Part Number:  9640K244
|returns z axis head to safe position
|no
|-
|stepper saftey spring
|4
|$10.00 per Pack of 6
|Part Number:  3114T79
|
|no
|-
|cutting lubricant
|Kerosene
|1/2 gallon
|$10
|Wikipedia Cutting Fluid Tapping holes and such, might not be needed
|no
|-
|Skateboard Bearing:Sealed:ABEC-7
|8
|$9.95
|VXB
|For 45 degree runner carriage for angle grinder, and under rack|
|no
|-
!Total 1 Approx. $1582
|Torch Table Wiki
 
|one torch table, sans  stepper motors, tools, and torch
 
|}
 
=Working Concepts=
==X axis==
[[Image:xaxisconcept.jpg|500px]]
[[Image:X axis back view.jpg|500px]]
[[Image:X axis front view .jpg|500px]]
[[Image:X axis top plate stepper mount and y axis mount.jpg|500px]]
[[Image:X axis bearing shot wire frame.jpg|500px]]
[[Image:X axis bearing shot.jpg|500px]]
[[Image:X axis barrel .jpg|500px]]
 
==Y axis==
[[Image:yaxisconcept.jpg|500px]]
 
 
[[Image:Y axis back view.jpg|500px]]
 
 
==Z axis==
[[Image:zaxisconcept.jpg|500px]]
 
[[File:Y axis z axis front view.jpg|500px]]]
[[Image:Z axis shot.jpg|thumb|50px]]]
=Blender Concept=
 
[[Image:torchconceptlawrence.jpg|500px]]
 
[[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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