Posted by BillS on July 13, 2007 at 12:30:43:
In Reply to: Re: change gears for a newark hobbing machine posted by brent on July 11, 2007 at 13:32:01:
Don't know if you have a 112T gear, but this should work if you do:
24 x 32
96 x 112
Not having an 84T is not the problem, the way I see it. Basically, with a 12:1 index, the overall ratio is too high to stay below 100T in the denominator, given the possible factors.
If your machine has a differential, it is likely that you could use a "dual" gear setup, where an arbitrary helix angle is generated by feed/index combination, and the differential is setup to an equal but opposite helix angle.
A more straightforward approach might be to cut a 112T change gear first, if you don't have one.
Post a Followup