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How to cut curved and profiled channel into cylinder?
eric_chavez540
Member Posts: 2 ✭
How can i cut a curved channel into the cylinder so that it matches the profile of the tooth? I would like to create a similar mechanism to the image below. Since I intend to 3D print this, I don't want any +45° overhangs so a wedge shaped tooth would be more reliable. I've tried sketching the path I would like it to take and wrapping it to the cylinder, then sweeping the profile of the tooth, but since I can only sweep a face and not a 3D shape, the channel only reflects the profile straight on and not how the tooth should fit as it curves. Thanks!
Answers
Without a true 3D part sweep (like some other CAD systems have), your best bet in this case, with a cylindrical pin, is to create a swept surface which is normal to the cam cylinder, and then thicken that symmetrically by the diameter of the follower pin (plus a tolerance) and then manually add fillets where needed. Depending on your manufacturing method, the bottom of your cam track might just want to be a cylindrical offset of the stock diameter.
A bit tired, so I haven't taken the time to fully absorb what is being discussed. But take a look at this document by Konstantin to see if anything in it would help
https://cad.onshape.com/documents/39369c7fe89d343a835363dc/w/4c259cbc4e31028ea24d5754/e/b0228ac5cf7949b4a73c17a8