Determination of Pitch Angle for Bevel Gears

Introduction:

The bevel gears are used for transmitting power at a constant velocity ratio between two shafts whose axes intersect at a certain angle.

Pitch Angle for Bevel Gears

Consider a pair of bevel gears in mesh,

Let θ_P1 = Pitch angle for the pinion,
θ_P2 = Pitch angle for the gear,
θ_S = Angle between the two shaft axes,
D_P = Pitch diameter of the pinion,
D_G = Pitch diameter of the gear, and