Micro gear reduction motor processing method and gear broken tooth form

What are the tooth processing methods of gears in micro gearboxes? The gearbox industry can be divided into three categories: rolling method, forming method and space forming method.

The specific method is as follows:

1. Roll cutting method. In addition to the cutting and feeding motion, the hobbing tool also rolls relative to the gear being machined. Its characteristic is that as long as one tool is needed, it can process any gear with the same modulus of any number of teeth and any amount of change. .Rolling method can be divided into continuous rolling method and exponential rolling method.

2. Forming method. There is no normal movement in this method. It uses a tool with a tooth profile to move in the direction of the tooth profile. Tool and gear contact along the entire contour. Therefore, the machine tool used is simpler than the hobbing method. The forming method can be divided into index forming method and full tooth forming method.

3. Space formation method. This method uses a complete space cavity in the shape of a gear as the mold. The entire gear is cast and sintered in this mold. Pressed or die cast. For mass production of pinions made of non-ferrous metals and plastics.

Micro gearboxes are also one of the electrical and electronic industries. Products in this industry are mainly divided into geared motors, electronic parking reducers, gear reducers, planetary reducers, DC geared motors, micro geared motors, etc. The broken gear teeth in these products is a very dangerous form of failure.

It can be subdivided into the following categories:

(1) Overload disconnection

(2) Gear teeth cut

(3) Fatigue fracture

(4) Randomly broken