Posted by BillS on May 25, 2012 at 08:19:57:
In Reply to: Measurement of Chordal thickness for spiral gear posted by tom on May 19, 2012 at 02:56:55:
I had to extract this from code so hope it is correct.
if miter set:
cthk = Circular Thickness = NCP/2
cthk = function (gear ratio, shaft angle, t_g, dp)
If you know the circular thickness, then
Chordal Thickness =
(t_p/dp) SIN(cthk x dp/t_p)
This doesn't account for spiral angle since it is chordal along pitch circle, so I think if you multiply the result above by COS (spiral angle) That should get the normal chordal thickness.
There are probably variations on getting thickness, so please let us know.
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