A parallel-shaft gearset consists of an 18-tooth helical pinion driving a 32-tooth gear. The pinion has a

Question:

A parallel-shaft gearset consists of an 18-tooth helical pinion driving a 32-tooth gear. The pinion has a left-hand helix angle of 25◦, a normal pressure angle of 20◦, and a normal module of 3 mm. Find:
(a) The normal, transverse, and axial circular pitches
(b) The transverse module and the transverse pressure angle
(c) The pitch diameters of the two gears