Robot Gearbox

Description

A gearbox to be mounted on NEMA17 stepper motors, to be used in hobby robotics projects :)

Designed to be printed on a standard FDM 3D printer.

There are two versions:
* Planetary Gearbox with a reduction of 4.36
* Wolfrom Gearbox with a reduction of 76

Both versions are set up with a large diameter roller bearing on the output side.

The gearboxes are used in two other projects:
* Robot arm: https://hackaday.io/project/182652-3d-printed-palletizing-robot-arm
* Mobile Plattform: coming soon

Files

GearboxWolfrom_V01.zip

STL files of the wolfrom gearbox parts that are printed. You do need four planets.

x-zip-compressed - 5.19 MB - 10/22/2022 at 16:47

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GearboxWolfrom_V01.STEP

CAD file of the wolfrom gearbox

step - 6.13 MB - 10/22/2022 at 16:47

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GearboxPlanetary_V01.zip

STL files of the seven planetary gearbox parts that are printed. You do need four planets.

x-zip-compressed - 5.06 MB - 10/22/2022 at 16:30

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GearboxPlanetary_V01.STEP

CAD file of the planetary gearbox, output flange for meccanum wheel

step - 4.55 MB - 10/22/2022 at 16:28

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Components

1 × NEMA17 stepper motor

1 × 3D printed parts as in the zip files

1 × Output shaft bearing: 1 x 6709, 45x55x6 mm

1 × For the planetary gear: 8 x MR128 bearing 8x12x3.5 mm

1 × M3 screws and nuts

Build Instructions

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1

3D Printing

With PLA the tolerances were very good in my set up; using PETG was not that good... I adjusted the fit to the bearings by printing with a slight increase in size, defined in the slicer.

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Robot Gearbox

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Description

Files

GearboxWolfrom_V01.zip

GearboxWolfrom_V01.STEP

GearboxPlanetary_V01.zip

GearboxPlanetary_V01.STEP

Components

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Build Instructions

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