How To Solve The Problem That The Punching Size Of Metal Stamping Parts Does Not Meet The Requirements

In the production process of metal stamping parts, there will be situations where the size of the punching hole is too large or small, and the size of the punch is quite different. In order to solve this problem, we have considered the planning size and processing of the convex and concave molds. In addition to components such as accuracy and blanking gap, we must also consider the following aspects.

1. In the production of metal stamping parts, due to the burrs generated during the punching, the punching edge needs to be researched, and pay attention to check whether the punching gap is reasonable. It is caused by the instability of stamping parts during bending, mainly for U-shaped and V-shaped bending, guiding the stamping parts before bending, guiding during the bending process, and pressing the material during the bending process to prevent the stamping parts Slippage during bending is the focus of solving the problem.

2. In the production of metal stamping parts, the tensile stress on the material increases, and the tendency of the stamping parts to turn over and twist increases. When turning over, the size of the punching hole will become smaller. The strong pressure on the material causes plastic deformation of the material, which will cause the size of the punching hole to become larger. When the strong pressure is reduced, the punching size will become smaller.

3. In the production of metal stamping parts, if the end is repaired with a bevel or arc, because the punching force is relieved, the punching is prone to turning over and smearing, so the punching size will become larger. However, the end of the punch is flat, and the size of the punching hole will be relatively small.