How do you explain the 1 die and 2 die in the gear?
To determine the size of the tooth (teeth and tooth thickness), indexing parameters and external circle size. Gear pitch circle diameter is equal to the number of teeth is multiplied by the modulus.
Modulus is one of the most basic parameters of a modular gear. When the gear is designed, the number of teeth is determined
Module refers to the adjacent two teeth with side tooth profile in the pitch circle pitch P (ARC) and the ratio of PI (m=p/ PI), in millimeters.