Blanking

The blanking of motor core is an important link in the process of motor manufacturing. The prominent problem of blanking is that the inner diameter of stator is out of tolerance. According to the blanking theory, the size of the hole punched out on the plate is equal to the size of the punch, and the size of the material dropped is equal to the size of the punch.

According to this principle, when designing the mould, the outside diameter size of the punch is the aperture size of the punching part, and the inside diameter size of the blanking die is the outside diameter size of the blanking part. In order to ensure that the size of the parts meets the requirements of the drawing, the punch of the punching parts is processed according to the middle value of the hole, and the inner diameter of the blanking die is processed according to the middle size of the blanking parts.