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How to make this camshaft push the valves?
fraser_roberton
Member Posts: 2 ✭
Hi all, I have been designing an engine in onshape and recently I have reached the cylinder head section. I have made a camshaft and valves but cannot get the camshaft to push the vales properly. I have looked online for help already and have tried using a tangent mate, but it just won't rotate the entire way around. I will provide a link to the document so you can see, the cylinder head is all in the cylinder head folder, everything should be labelled pretty well but if you have any questions just ask. I did make a folder with a proof that the tangent mate will work I just cant get it to work on the actual model, thanks all.
https://cad.onshape.com/documents/e072b8ff0ed42498c5eee9c5/w/b4769a9cbb6d15c9e25b69c0/e/c5f7b8fc5e774fdb1fc05b1e
Best Answers
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eric_pesty
Member, pcbaevp Posts: 2,471 PRO
Your cam profile isn't tangent so that's why the tangent mate isn't working:
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glen_dewsbury
Member Posts: 1,221 PRO
I think you'll find your cam lobe profile is not tangent to the main body. Once that is taken care of the tangent mate in assembly will allow tangent propagation. I've hidden a bunch of stuff to simplify maters for now. Animate revolute 1 on a continuous loop to see this work.
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Answers
Your cam profile isn't tangent so that's why the tangent mate isn't working:
I think you'll find your cam lobe profile is not tangent to the main body. Once that is taken care of the tangent mate in assembly will allow tangent propagation. I've hidden a bunch of stuff to simplify maters for now. Animate revolute 1 on a continuous loop to see this work.
https://cad.onshape.com/documents/9c638d4b92c1f84290d04423/w/fc800b09af838d94cca7c0b2/e/7ff3a2ff3d632dd25f828cd0