With the refinement of industrial electronics, various industries have increasingly high requirements for stamping parts, including the shape of stamping parts. However, in the process of blanking the shape of stamping parts, it is easy to cause material turnover and distortion, which affects the product quality. This article will share with you: Why does the metal stamping parts have material turnover and distortion? How to solve it? In the progressive die, the shape of the stamping part is formed by cutting the residual materials around the stamping part. The influence of blanking force is the main reason for stamping parts to turn over and twist. During blanking, due to the existence of blanking clearance, the material is stretched on one side of the female die (the material is warped upwards) and compressed on the side near the punch. When the unloading plate is used, the unloading plate is used to compress the material to prevent the material at the die side from warping upward. At this time, the stress condition of the material changes accordingly. The material near the punch side is stretched (the compression force tends to decrease) and the material on the die face is compressed (the tension force tends to decrease) with the increase of the pressing force on the discharge plate. The turnover of stamping parts is caused by the material on the die face being stretched. Therefore, during blanking, pressing and compacting the material is the key point to prevent the stamping from overturning and twisting.
Reasons and solutions for overturning and twisting of stamping parts:
1. It is caused by the rough edge of the blanking part during blanking. It is necessary to study the cutting edge and check whether the blanking clearance is reasonable.
2. The blanking and blanking station shall be taken to solve the problem that the blanking and blanking station has caused the overturning, twisting and deformation of the blanking parts, resulting in the poor forming after bending.
3. It is caused by instability of stamping parts during bending. Mainly for U-shaped and V-shaped bends. The key to solve this problem is to guide the stamping parts before bending, guide the stamping parts during bending, and press the materials during bending to prevent the stamping parts from slipping during bending.
Why does the metal stamping parts turn over and twist? How to solve it? I believe you have already understood. The most important reason for stamping parts to turn over and twist is the impact of blanking force, unreasonable blanking clearance and uneven clearance. The above methods can effectively solve these problems and prevent stamping parts from turning over and twisting.