The tolerance of precision metal stamping parts is related to the size and the selected tolerance level. Choosing the tolerance level must meet the design requirements, as well as the possibility and economy of the process. In other words, if the requirements are satisfied, try to increase To the tolerance value, that is, the lower tolerance level is selected.

Tolerance is the range of dimensional changes. The higher the value, the lower the accuracy and the less difficult the machining; the smaller the value, the higher the accuracy and the more difficult the machining. Which, what items should be paid attention to in production?

 1. Bending angle: the angular dimension of the stamped part formed by bending

 2. Punching angle: the angle dimension obtained by punching at the plane of flat plate or formed part

3. Punching fillet radius: linear dimension of punching part fillet radius after punching, blanking and other separation processes

4. Forming size: linear size of stamping parts processed through bending, stretching and other processes

5. Punching size: linear size of punched parts after punching, blanking and other separation processes