UrumbotXY Fall 2022
This project is a corexy 2D motion system using serialstep. Modified from original files in UrumbotXY.
CoreXY
For a simple coreXY motion system, here is the list of parts you need to make:
It is advised to 3D print capstan_motor and capstan_pulley, while all other parts can be machined or laser cut. 3D models files are available under ./files/3d, and dxf files under ./files/2d.
For assembly, you will also need:
- 2x NEMA 17 motors
- 9x bearings
- 8x V bearings
- 4x small bearings
- M5 screws (structure and bearings)
- M5 nuts and washers
- M3 screws (string tensioners)
- M3 nuts and washers
Complete Bill of Materials (BOM) here
Assembly of XY axes.
first
second
third
fourth
Note how the string is inserted on the capstans. The string can be attached to temporary anchor points to provide enough tension during this step. Inside capstan_pulley, you should insert a small bearing at the top and bottom. Use appropriate washers to have the correct height; there are 4 levels on capstan_pulley, and they should be aligned between each levels of capstan_motor.
Pen plotter
Pen:
Drawing: