The Wobble Ring Stepping Motor MK1
thingiverse
This upgraded actuator design is mostly printable using a 3D printer; however, it remains incomplete. The creator decided to share its progress as it developed. It is inspired by this research and plans to use homemade solenoids in the future. Hypo-epicycoidic gearing, based on this design, is also incorporated. The actuator should move like this video. Instead of air chambers, an outer ring 'wobbles,' with the wobbleRing having one more tooth than the drivenGear (51/50), allowing for 2.4 degrees between solenoid steps. The creator chose cycloidic gearing due to slower wear and MCAD library issues; suggestions for a better gear profile are welcome. This is their first OpenSCAD project, so constructive criticism is appreciated. Although the thing hasn't been printed yet, the OP advises caution when reviewing the OpenSCAD code. More parameters will be added later, but solenoid design remains uncertain. Currently, no instructions exist as the creator has not built anything themselves. The "wobbleRing" and "drivenGear" pieces might offer insight into their real-life mesh interaction.
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