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How to animate double rack and pinion
Ruoshui_Mao
Member Posts: 3 ✭
I saw this YouTube video showing a pinion only partially having teeth, and is able to move back and forth on a double rack. I want to simulate that in onshape.
Here's what I was trying, and I know that I kind of need the rotation of the pinion to be in a different period than the translational motion. It's not the best description.
Is what I want to achieve possible in onshape? How should I do it?
https://stuy.onshape.com/documents/d2286017551c85f26671d4b5/w/83d84de663a67d1cd567302c/e/f373640f2a1e452dc96bfe58
Here's what I was trying, and I know that I kind of need the rotation of the pinion to be in a different period than the translational motion. It's not the best description.
Is what I want to achieve possible in onshape? How should I do it?
https://stuy.onshape.com/documents/d2286017551c85f26671d4b5/w/83d84de663a67d1cd567302c/e/f373640f2a1e452dc96bfe58
0
Answers
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Currently, Onshape does not have physical stops or relations built into assemblies. However, here is one approach you could take:
- Create a part that lets the pinion spin while sliding horizontally
- Create another part that is attached to the rack and will slide vertically
- Create another part that is attached to the vertical slider and the horizontal slider, I call this the "Animation Rod" This will attach to the sliders via revolution mates
- Add gear relations between the animation rod and the pinion
https://cad.onshape.com/documents/b0fe97767ee274d9e06ea583/w/2f43ae5ff1c046f51ec06770/e/2b4aabb84fba308c424425cf
RENDERCAD
rendercad.ai - Photorealistic product rendering.
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I see that this is possible in your animation. But I still don't get how to set it up. May you share your document?0
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Oops, I meant to share this with all of that.
https://cad.onshape.com/documents/b0fe97767ee274d9e06ea583/w/2f43ae5ff1c046f51ec06770/e/2b4aabb84fba308c424425cf
RENDERCAD
rendercad.ai - Photorealistic product rendering.
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