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involute serration help

johnbatchelder

Plastic
Joined
Jun 27, 2013
Location
california
hello , i need some help machining involute serrations.
the print says
american standard involute serrations
per 02-1698,
external
teeth on edge of flange
48/96 diametral pitch
56 teeth
1.1875 major diam .

I have the machinist hand book , to reference but im not sure .
does anyone know the pitch diameter ? or how to figure it out?
I will be using a 45 degree key cutter to machine this on a 4th axis rotary.
 








 
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