Gear cutter and depth of cut

[JPhillips]

Divide 2.157 by the pitch to get depth of cut.

Jack

 

[devils4ever]

I'm not sure if this will help you, but the cutting depth depends on the pressure angle.

For 14.5 degrees, the cutting depth is 2.157/DP.
For 20 degrees, the cutting depth is 2.25/DP.

 

[benmychree]

Another Thing about depth that was mentioned above was, is the depth of cut affected by the initial setting of the teeth of the cutter, beiang as the cutter is seldom running perfectly true on its axis, usually because very often the arbor are often not running true, does it matter if the cutter is set on depth on the highest indicating tooth or the lowest tooth; the answer should be obvious, it should be the highest tooth and the setting should be made while the cutter is rotating, which is the way I have always done it, using a strip of paper held lightly between the fingers at a respectful distance from the nip point of the cutter, I approach slowly until the cutter nips the paper and pulls it through, usually a very light trace will be made on the gear blank, this will be close enough for all but the finer pitches, the lower the pitch number the less it matters to be spot on.