Common problems in the application of automotive stamping parts

2022-07-04 10:01:43

The common problem of dies in production is that the dies always break the punch. There are many reasons for breaking the punch. Generally, the thickness of raw materials is relatively thick, and the punch is relatively weak, which will easily break the punch. The problem that needs special attention when opening the die of stainless steel products is the punch reinforcement. If the material thickness is relatively thick, it is not recommended to punch in the blanking die, because the die blanking force is too large, which will also cause the punch to break easily, The early review of each product is very important when the customer requires mold opening. Convene relevant technicians to exchange their experience according to everyone, so as to avoid repeated mold repair after the mold is developed.

The processing of metal automobile stamping parts is a widely used processing method. In the process of metal stamping, it involves deep drawing, trimming, punching, flanging, opening and other processes. Making some problems is very complicated. So what are the common problems of metal stamping parts?

1. Burr mainly occurs in the cutting die and blanking die, and burr will be generated in the gap between large or small cutting edges.

2. Adhesion and scratch on the surface of metal stamping parts or dies due to the friction between materials and punches or dies.

3. Convex and concave, foreign matters (iron filings, rubber, dust) mixed into the uncoiling line.

4. If the blanking size is too large or too small, there is a large difference between the punch size and the punch size.

5. When the workpiece is formed, the extrusion is in contact with the die and forms a line.

6. Twist, due to uneven stress, poor matching of drawbead or poor control of the slider of the press, the corner and strain of the R angle or embossed part of the part are caused by twists and turns.

7. The strong pressure of metal stamping parts on materials and plastic deformation of materials will lead to the increase of punching hole size, and when the strong pressure is reduced, the punching hole size will be smaller.