scotch yoke
scotch yoke
(OP)
thread404-225915: Help with sliding mechanism
anybody knows how to calculate PV value on a scotch yoke slot?
anybody knows how to calculate PV value on a scotch yoke slot?
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RE: scotch yoke
One solution to that is a special bushing between the pin and the slot. The special part is that the bore for the pin is round, but the outside of the bushing is square or rectangular, so that you start out with finite bearing area on both the rotating and sliding surfaces.
Your ME textbooks should have noted that Scotch Yokes are still a pretty crappy mechanism, because of the impact that accompanies every direction change of the yoke.
You're probably thinking it's too late to throw out your pet mechanism and start over, perhaps with something mechanically simpler and otherwise electronic. When the project is over, if it's ever over, you'll look back and think otherwise.
Mike Halloran
Pembroke Pines, FL, USA
RE: scotch yoke
Cheers
Greg Locock
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RE: scotch yoke