Torch Table Design Rationale: Difference between revisions
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*495 in oz [[Stepper Motors]] from xylotex, 1/4" shafts | *495 in oz [[Stepper Motors]] from xylotex, 1/4" shafts | ||
**About 31 in lb torque, or 1 G acceleration for a 60 pound gantry with 1" diameter driver gear | **About 31 in lb torque, or 1 G acceleration for a 60 pound gantry with 1" diameter driver gear | ||
*Gantry weight - | *Gantry weight - about 90 lb, see below | ||
[[Image:annotatedtable.jpg]] | [[Image:annotatedtable.jpg]] | ||
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For this weight, acceleratio of motors is about 3 | For this weight, acceleratio of motors is about 2/3 G | ||
[[Image:gantryannot3d.jpg]] | [[Image:gantryannot3d.jpg]] | ||
Revision as of 22:58, 16 February 2009
See Torch Table for development work.
Basic Design
- 6" wide by 1/4" u-channel frame
- Gear rack drive, 20 degree gear rack, 1/2" wide, 20 pitch (20 teeth per inch)
- 1" pinion gear, rides directly on rack
- z-axis of torch has manual adjustment
- Sacrificial slats may be used, or another workpiece table
- 495 in oz Stepper Motors from xylotex, 1/4" shafts
- About 31 in lb torque, or 1 G acceleration for a 60 pound gantry with 1" diameter driver gear
- Gantry weight - about 90 lb, see below
X Axis Detail
Gantry detail
Gantry weight:
| ITEM | WEIGHT (LB) |
| stepper motor x 2 | 8 |
| 6x1/4x6' y track plate | 30 |
| torch head | 4 |
| 3/16 plate, 15 4x1/16 tubing | 7 |
| Delta support | 5 |
| 2x2" angle verticals | 7 |
| z axis cage | 7 |
| TOTAL | 85 lb |
For this weight, acceleratio of motors is about 2/3 G
