1. We need to determine the gear ratio according to the motion transmission chain.
2. Calculate the circumferential force Ft acting on the teeth based on the torque acting on the pinion.
3. Determine the number of teeth of a reasonable gear according to the minimum number of teeth.
4. Use the tooth bending fatigue strength design formula to calculate the gear modulus we need.
5. Use the tooth surface contact fatigue strength design formula to calculate the gear index circle diameter.
6. Select the gear material and heat treatment method according to the type and purpose of the gear.
