The conical surface is used as the indexing surface, which approximately replaces the drop wheel of the end truncated surface far from the throat on the hyperbola.

Features of hypoid gears:

1. When facing the teeth of the big wheel, place the small wheel horizontally on the right side of the big wheel. If the axis of the small shaft is below the axis of the big wheel, it is called a downward offset, otherwise it is an upward offset.

2. As the offset distance increases, the helix angle of the small wheel also increases, and the outside diameter of the small wheel also increases. In this way, the rigidity and strength of the small wheel can be improved, and the number of teeth of the small wheel can be reduced, and a high reduction ratio transmission can be obtained.

The advantages of hypoid gears:

1. It can reduce the position of the driving bevel gear and the drive shaft, thus lowering the center of gravity of the body and the vehicle, which is beneficial to improve the driving stability of the car

2. The offset of the gear makes the number of teeth of the driving gear less, and a pair of gears can obtain a larger transmission ratio

3. The overlap coefficient of the hyperboloid gear meshing is relatively large, the strength is higher when working, the carrying capacity is large, the noise is smaller, the transmission is more stable, and the service life is long.