Taper in Helical Gears


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Posted by Joe on July 29, 2013 at 10:55:48:

I have a job that requires a taper cut on the teeth of helical gears, most of the gears are equal amount of taper on the left and right flank. But some have more taper left flank than the right. Iíll use a Barber Coleman 16-16 twin lead hobber. It has a sine bar that is connected by linkage from the saddle to a roller under the head stock so as the saddle moves the headstock lowers deeper into the cut . By adding shim stalk to the sign bar increases the angle or the amount of taper cut into the gear. My question is how to calculate the correct taper and the lead change in the differential gears. Any help would be greatly appreciated.


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