MultiBot Rotary Axis 3D Printer Model
The file 'MultiBot Rotary Axis 3D Printer Model' is (stl) file type, size is 1.1MB.
The file 'MultiBot Rotary Axis 3D Printer Model' is (stl) file type, size is 1.1MB.
This is a mostly 3D printed rotary axis for a cnc machine. I made it to use with my MultiBot CNC machine but it would work with any machine that can accept a NEMA 17 stepper motor.
It uses a pair of 3D printed gears and a 200 mm toothed timing belt to get a 3:1 reduction on the stepper motor. This increases the torque and resolution with minimal backlash. A pair of ball bearings support the shaft, and for now I am using an off the shelf 2" 3 jaw chuck to hold the workpiece.
Edit: added files for a 3D printed tailstock.
Add a touch of super glue to the nuts to help keep them in place if they don't fit tight in there holes.
Use a hair dryer to carefully warm up the parts if you are having troubles fitting them together. Be careful with this, it only takes a minute or less to soften things up, check often as you warm up the parts.
Rotary Axis materials needed:
2x 15x32x9 ball bearing
https://smile.amazon.com/dp/B08KT6R23X/
48mm NEMA 17 stepper motor
https://smile.amazon.com/dp/B00PNEQKC0/
2" 3 jaw chuck
https://smile.amazon.com/dp/B08F7FYZCD/
200 mm 6mm wide toothed timing belt
https://smile.amazon.com/dp/B07V6N32B1/
4x M3 x 8 mm socket head cap screws
1x M3 x 6 mm socket head cap screw
Tailstock materials needed:
1x 608zz Bearing
https://smile.amazon.com/Bearings-Double-Shielded-Miniature-Skateboard/dp/B07H83VV6B/
1x M8 x 100 mm hex bolt
https://smile.amazon.com/uxcell-100mm-Stainless-Steel-Threaded/dp/B0143AC67M/
4x M8 hex nuts
https://smile.amazon.com/Persberg-M8-1-25-Height-Stainless-120153/dp/B089PR8DVP/
1x M6 x25 mm hex bolt
https://smile.amazon.com/M6-1-0-Hexagon-Screws-Stainless-Threaded/dp/B08KTKTQSX/
1x M6 hex nut
https://smile.amazon.com/Prime-Line-9087834-Finished-Metric-25-Pack/dp/B07DS3W8JQ/
*** Note, buying bolts and nuts one at a time from Amazon is probably the most expensive way to do it. I recommend getting a set of bolts and nuts at a minimum, or shop around at a shop that specializes in hardware.
| rotary_base_belt.stl | 191.6KB | |
| rotary_gear.stl | 544.2KB | |
| rotary_nut.stl | 529.8KB | |
| rotary_shaft_belt.stl | 2.2MB | |
| rotary_tailstock_base.stl | 91.6KB | |
| rotary_tailstock_foot.stl | 26.1KB | |
| rotary_tailstock_large_nut.stl | 79.9KB | |
| rotary_tailstock_quill_1.stl | 146.2KB | |
| rotary_tailstock_small_nut.stl | 92.8KB |
