In the daily operation of stamping parts, you will encounter situations where the punching size is too large or small (may cross the standard request) and the difference from the punch size is large. The precision and blanking gap are exceptional, and the following aspects should be considered to manage.
1. Caused by burrs of punching parts that occur during punching. Need to study the cutting edge, and pay attention to see if the blanking gap is reasonable. Caused by the instability of stamping parts during bending. Mainly for U-shaped and V-shaped bending. The treatment of this problem, the guide position before the bending of the stamping part, the guidance position during the bending process, and the pressing data during the bending process to avoid the slippage of the stamping part during bending are the key points to solve the problem. Caused by the flash of the punching piece during punching. Need to study the cutting edge, and pay attention to see if the blanking gap is reasonable.
2. When the cutting edge wears, the tensile stress on the material increases, and the tendency of the stamping parts to turn over and distort increases. When the material is turned over, the punching size will become smaller. The strong pressure on the data will cause plastic deformation of the data, which will lead to a larger punching scale. When reducing the strong pressure, the punching scale will become smaller.
3. The shape of the edge of the punch edge. If the bevel or arc is repaired at the end, due to the reduction of the punching force, the punching piece is prone to overturning and smearing. Therefore, the punching scale will become larger. When the end of the punch is flat (no slope or arc), the punching size will be relatively small. In the detailed operation, detailed analysis should be made on the detailed title problem, and then the countermeasures to solve the problem should be found.
