Hypocycloid Gear Test

thingiverse

This test hypocycloid gear offers an approximately 64:-1 reduction when paired with a NEMA 17 stepper motor. Required additional components include Metric 608ZZ bearings. The output features three M3 holes with hex heads for coupling purposes. Planet gear fitting may require slight sanding to accommodate the bearings, as well as the offset shaft. A slot in the shaft is provided for adding friction via a tiny woodscrew or self-tapping screw. Ensure the stepper's flat section faces away from the bearings to avoid spacing issues. While this design has been tested, it requires further thorough testing. View a video of an earlier version functioning here: http://youtu.be/D_uAb-iEb_Q. This updated model centers parts correctly and prints them the right way up. Access original Solidworks files and STL/Parasolid files in the provided zip folders, though these do not include backlash for extrusion-printed parts. Credit goes to Alex Lait for creating the Python Hypocycloid cam generator (http://www.zincland.com/hypocycloid). Be aware that my copy has been altered significantly with metric and automatic naming changes.