Planetary gear

Author: ngoodger, published on 2014-03-06

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Summary

Youtube link: http://youtu.be/m3w0liy-QJE

3d printed planetary gear with gear bearings connecting the carrier to the gear planets. This allows (potentially) for reduced frictional losses in comparison to sleeve bearing.

The design is a extension of Emmett Lalish’s innovative gear bearing http://www.thingiverse.com/thing:53451 and also uses his pin connectors V3 library http://www.thingiverse.com/thing:33790.

The gear ratio is written on the using HarlanDMii Write library http://www.thingiverse.com/thing:16193

Instructions

Print the carrier and the planetary gear separately and assemble.

The included gear.stl uses a 0.15mm tolerance which may or may not enough for your printer. It can be adjusted in the openscad source file.

Material: 1.75mm Blue and red PLA from Colorfabb

Slicing settings

Slicer: Kisslicer
Number of loops: 2
Layer thickness: 0.2mm
Extrusion width: 0.5mm
Infill: 33%
Extrusion temperature: 195deg
Bed temperature: 50deg
Perimeter speed: 20mm/s
Solid infill: 30mm/s
Sparse infill: 50mm/s

License: Creative Commons – Attribution – Share Alike

Tags: Epicyclic_gear, fractal, Gear, Planetary_gear