Hand G-code brass cycloidal tooth gear.
Posted: Sat Jun 09, 2018 4:25 pm
https://www.youtube.com/watch?v=UNiuqz_VIJ0
Using hand coded G-code to cut a 1/2" brass gear for an orrery. It's running on LinuxCNC using parameter calculations and "O codes". I set the basic definitions for the gear -- number of teeth, pitch radius, center to center distance, etc. Then the G-code makes the simple linear and arc motions that interpolate to create true epicycloidal teeth. The gears don't conform to horological standards, but they are mathematically and geometrically correct, and the pairs mesh perfectly. The results are actually amazing -- smooth enough that only a very light pass with a 3M radial bristle dremel wheel polishes off the burr.
--Justin
Using hand coded G-code to cut a 1/2" brass gear for an orrery. It's running on LinuxCNC using parameter calculations and "O codes". I set the basic definitions for the gear -- number of teeth, pitch radius, center to center distance, etc. Then the G-code makes the simple linear and arc motions that interpolate to create true epicycloidal teeth. The gears don't conform to horological standards, but they are mathematically and geometrically correct, and the pairs mesh perfectly. The results are actually amazing -- smooth enough that only a very light pass with a 3M radial bristle dremel wheel polishes off the burr.
--Justin