High Rate Gearbox for 3d Printing

Last crawled date: 1 year, 10 months ago

This is my take on the concept from https://grabcad.com/trinityscsp.juarez-1's wonderful model: https://grabcad.com/library/high-rate-planetary-mechanism-1
I redrew all the gears by hand using the method from this tutorial: https://grabcad.com/tutorials/tutorial-how-to-model-involute-gears-in-solidworks-and-show-design-intent
The gear has the following specs:
Sun: 12 teeth,
1st Planet: 18 teeth,
2nd Planet, 1st gear: 33 teeth,
2nd Planet, 2nd gear: 32 teeth,
Fixed Ring: 48 teeth,
Output Ring: 47 teeth.
I think that the overall gear ratio is 517.5:1, but I could be wrong :-)
The parts can be printed (almost) without support material because the individual components are split into more parts that lie flat on the print bed.