How to reduce the punching force of metal stamping die

In the metal stamping die, the punching force is determined by the perimeter and material thickness of the stamping and the shear strength of the material. The selected materials and equipment cannot be changed. If you want to reduce the punching force, what do you need to do? ? The following stamping parts processing plant will take you to take a look; the so-called reduction of the punching force of the metal stamping parts mold is mainly to reduce the instantaneous pressure required when the material is separated, and the processing technology itself is unchanged; reduce the metal stamping parts The punching force of the mold can be from the following aspects: 1. Heating punching is commonly known as red punching. When the shear strength of the metal stamping material is high or the sheet material is too large, the sheet can be heated to a certain temperature to reduce the sheet The strength of steel, the shear strength of the steel in the heated state is reduced a lot, so the heating punching can greatly reduce the punching force. But pay attention to the annealing softening of the die edge in the heated state, so a hot die is needed to make the die, which is more troublesome in equipment and technology; 2. Step punching is used in multi-punch punching. Because the punching time of the punch is different, you can cut all the cuts at the same time and change them into batches to reduce the punching force of the metal stamping die. The punches with different heights have large diameters. It should be punched first, because when the punch of the back punch enters the material, it will cause a lateral thrust, so that the punch that enters the material first may be bent. 3. Oblique blade blanking The cutting edge plane is made into an oblique edge with a certain angle inclined to its axis. Because the cutting edge does not cut into the material at the same time during blanking, the punching force can be significantly reduced. In order to obtain a flat metal stamping part, it is oblique The direction of the blade opening is the key to oblique blade punching, and its opening principle is; when blanking, the oblique blade is opened on the die, and the punch is a flat blade; when punching, the oblique blade is opened on the punch, and the die is Flat blade. In addition, the oblique blade should be symmetrical on both sides to avoid stress on one side of the mold. Article recommendation: Briefly talk about the rotating body drawing stamping parts Previous: Process characteristics of the punching die in the stamping part die