Figured out how to make gears in OnShape today using their featurescript. I am now officially unstoppable. 3d printing them now. This is just a hacky test job (those spokes on the largest gear are bad... I made them with a pattern of holes rather than an equal width spoke)
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Tne featurescript is great. It can also make helical gears, but I suspect 3d printer will struggle to print them unless the angle is fairly mild. But will try anyway.
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Base and 2 gears done. Now gotta print the big gear.
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Worst gear train ever. Also my first gear train ever. Now to make up some cunning mechanisms.
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The thin stem was to hold a slider to connect to the gear with a connecting rod, but idea didn’t quite work. Slider rod not long enough and too much friction everywhere.
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Idea is prototype of part of a mechanical sculpture. The slider would move a pen over moving paper roll drawing a sine wave. Paper roll would be moved by a bevel gear pair coaxial with smallest gear. Something like this.
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If I can get the mechanism working smoothly, add a motor that goes one round when turned on, then turns itself off with a limit switch somehow, giving you a single sine wave printout. We’ll see if I finish this mechatronic art crapject or run out of patience or skill.
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Doh! My idea needs a bit of rethink. I wanted a framed sculpture that spits out a scrap of sine wave each time you push a button so art viewer can take away a tearaway souvenir. But doing that with a pulling motion will be tricky. Like a bathroom paper towel dispenser. 🤔
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