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Unread 25-06-2008, 22:13
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Re: CAD: Making a cam mechanism

Quote:
Originally Posted by M. Krass View Post
Attached is a CAM generated in Solidworks 2007. Your original post is unclear as to whether you're looking for a radius or diameter of 2"; this is built with a 2" final radius. It's trivial to make another with smaller or larger dimensions.

This was made with Solidworks' Toolbox Cam tool. It automagically generates the proper sketch geometry for the cam you need based on a series of parameters. This is the first time I've really used it, so I don't know much about its limitations, but making this first one work was pretty straightforward.
Measurements of your part give me radii from ~.79 to ~1.79" in 270 degrees. So I rigorously Googled for how to enable the cam toolbox. After about an hour and 43 revisions later I have almost recreated your exact cam. It's wierd because as I decrease the follower radii the cam radii doesn't adjust properly. Right now it's driving me nuts so I'll have to play with it more before we try to mill the final version. Rev #43 has a 1" radii difference in 270 degrees so I can make it work in the next drive train CAD revision.

Thanks a ton
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