Thread: Request for help finding a cam curve that will have lower maximum contact stress than a Parabolic curve (and link to CAD and JPEG files)
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F. George McDuffee
 
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Default Request for help finding a cam curve that will have lower maximum contact stress than a Parabolic curve (and link to CAD and JPEG files)
On 26 Mar 2006 11:01:40 -0800, "John2005"
wrote:
snip
If there is a curve that produces a lower maximum contact stress and I
could get a CAD file of the curves I could superimpose over the
Parabolic curves for comparison in AutoCAD, that would be a very big
help.
snip

Try a tautochrone or cycloid curve. You can use excel to
generate the coordinates, and export these to a text file. There
are many lisp programs that will import the text file and create
the curve. Use polyline to generate an actual curve if required,
then use scale and rotate as required. Send me a good email
address if you need the coordinate import lisp program.

see http://en.wikipedia.org/wiki/Tautochrone_curve and about
17,000 more google references.
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