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Broken PETG Planetary Gearbox from RR1

A project log for RR1: Real Robot One - a DIY Desktop Robotic Arm

RR1 is an open-source, 6+1 degrees of freedom desktop robotic arm, mostly 3D-printed with joints powered by custom planetary gearboxes.

pavel-surynekPavel Surynek 11/10/2023 at 09:280 Comments

A new video about a broken PETG planetary gearbox from the RR1 revision 1 robotic arm. It was the gearbox from main shoulder joint. A surgery and analysis of the gearbox is shown.

What I found shows an important hidden weakness of the old design and is an excellent lesson for the future designs.

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