Cycloidal Gear Drive

grabcad

Small side project I've been working on. 10:1 reduction cycloidal gear drive. Used parametric functions for an epitrochoid spline for the gear profile. Used math to find the other parameters for the pin diameter, spacing, etc. I printed one out of abs at around 60% scaling (little too big otherwise). Ended up being a pretty nice size to have as a small desk toy. Pins are a little on the smaller size. I'm probably going to redesign for heftier pins that are inside the housing rather than extruding out of it, but then again I like how you can see everything on the outside. Also, I didn't add tolerances because I wanted it to be relatively tight. If you want to print your own you'll either want to have some sandpaper handy or go in and put in your own.