Posted by BillS on February 03, 2010 at 13:49:20:
In Reply to: setup for nondifferential barber colman part 2 posted by STEVE GREEN on February 02, 2010 at 13:58:03:
Steve, here are the results from CPC-HOB:
1.75 Deg RH
Table feed - .078 Lead Error = .0000039 inch/inch
INDEX = 41/71 x 48/85
FEED = 46/42 x 84/44
1.75 Deg LH
Table feed - .080 Lead Error = .00000079 inch/inch
INDEX = 46/79 x 56/100
FEED = 83/57 x 98/67
Since this came from CPC-HOB program, I'm not able to show you the step-by-step. The method is shown in the Machinist Handbook, and that's a good place to see how it's done. The math is simple but there can be a number of trial and error steps, however.