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How is the profile shift coeff. defined/ used for AGMA (inv. stub) gears?

How is the profile shift coeff. defined/ used for AGMA (inv. stub) gears?

How is the profile shift coeff. defined/ used for AGMA (inv. stub) gears?

(OP)
I have an inner gear that has DP = 4 (m = 6.35), nr. of teeth = 85 (inner gear) and inner diameter 540mm. Profile is (most likely) inv. stub. (not much data was given to me)
after some number crunching i've come to a possible PSC x = -0.8 and reference diameter 539.75 (note that that's smaller then the tip diamater - inner dia).
how do i describe this to a guy that's used to american style gear definitions? (i think they use something with addendums and dedendums).
also, what's bugging me is that the ref. dia is smaller then the inner dia, but that's the most likely solution for the given inner dia (i think).
i can attach a Kisssoft report if someone wants it (will understand it).

thanks.

RE: How is the profile shift coeff. defined/ used for AGMA (inv. stub) gears?

Why don't you just give "the guy" the report that KISSsoft has generated, all the necessary information for manufacture should be on the report.


Dedendum Coefficient = 0.8, this is correct for Fellows/AGMA stub profile.

4DP stub would be defined as 4/5DP.

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