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Why is my assembly overdefined?
evan_evaniuk
Member Posts: 5 ✭
Sorry I'm still a beginner, but I cant seem to understand what joint is over defining my assembly. I just want to pull the finger down by pulling a solenoid back, but when i put the final revolute joint, it all breaks. If i suppress the slider joint and freely move it, then its perfectly capable of doing the motion I want, but once its in the form of a joint it all breaks…
Best Answers
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wayne_sauder
Member, csevp Posts: 589 PRO
It is hard to tell without the document, but changing the last revolute mate to a cylindrical mate will probably work.
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nick_papageorge_dayjob
Member, csevp Posts: 893 PRO
Edu documents are read-only by default. You'll need to make it public for anyone to copy it and find the issue.
Or, play around with it more, you'll probably find the issue.
1
Answers
Examining your document will is needed to answer your question. Please post a link. - Scotty
@evan_evaniuk
It is hard to tell without the document, but changing the last revolute mate to a cylindrical mate will probably work.
indeed, it's likeley there's a very tiny CAD rounding error in the alignment of all the revolute planes.
So making one into a cylindrical can solve it.
Here's the link: https://cad.onshape.com/documents/aad42bbee8b53052c6a2e74e/w/911c9b916d70aada0dcc9c35/e/bbf92c230959a02f4ccc3935?renderMode=0&uiState=67af7098b372f8456f0effbb
I tried simply converting the revolute joint to a cylindrical but that didnt fix it sadly. Would I need to change the made connectors to do so?
Edu documents are read-only by default. You'll need to make it public for anyone to copy it and find the issue.
Or, play around with it more, you'll probably find the issue.
Oops - bad post
I played around with some of the spacings a bit more. was about 0.01 mm off on one of the links, so making that cylindrical worked. Thanks everyone.
I had a time where i wanted to constrain something with screw holes by 2 points. Use a revolute mate for both of those points as it'll automatically determine the angle!