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Author: john2005
Time: 06/06/07 17:24 PST
This is a reply to message no. 18798 by john2005
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Current Topic:
Request for help reducing friction and noise of a cam follower roller
After checking into this further, I think that this might be a case where the cam curves are not accurate enough and the cam is kind of binding between the two rollers. This is what Gerdb suggested in a previous post and it's the conclusion I & my machinist have also come to as a strong possibility for much of the problems.

Can anyone please tell me what the tolerance of the cam curves should be, relative to the cam rotation axis, for a conjugate dual roller cam as shown in FIG. 2 at the following link ? ...

http://www.malcams.com/dynamicpage.asp?id=15&parentId=4  

The cam was made from 4140 steel, CNC machined, and then the curve was flame induction hardened. I probably should have had the cam hardened and then ground to high accuracy.

Thanks
John
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