Torch Table Design Rationale

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Main > Digital Fabrication > RepLab Tools > Torch Table


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

Annotatedtable.jpg

X Axis Detail

Xannotateed3d.jpg

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

Gantryannot3d.jpg