51吃瓜

The punching and flanging of Metal Stamping parts are generally prepared for the next step of tapping or other processes. In the general process of flanging and turning holes, a series of problems such as cracking, burrs, and deformation often occur. How should stamping factories handle them in stamping processing?

1. The metal stamping parts have cracked holes.

This phenomenon mainly occurs at the cross-section, with concentrated force points, simple burrs, and is also affected by the material of the board. Therefore, it is advocated to use materials with good stretching function and thin thickness, and to increase the aperture as much as possible during planning, which can help alleviate the phenomenon of flipping holes and cracking. When planning the convex mold, choose spherical curvature, add touch area, switch the direction of pre hole and flip hole, convert the possible position of burrs, and reduce cracking.

2. Shorten the hole opening of metal stamping parts.

Irregular hole openings can make riveting difficult. Analyzing the reasons, you will find that the gap between the concave and convex molds is the source of the problem, causing the material to rebound. The standard practice is to adjust the mold gap to slightly less than the material thickness to ensure the vertical viewing point during stamping. 3. Insufficient flipping height of metal stamping parts.

Insufficient hole height can easily lead to the phenomenon of cutting corners, shortening the riveting depth of screws, and affecting the linking function. Therefore, precision metal stamping processing factories that cooperate for a long time will promptly detect the problem, increase the flipping hole height in a timely manner, or thin the hole wall thickness to increase the hole height.

4. The flipping radius of metal stamping parts does not match.

If the root radius of the hole is too large, it will affect the combination of the device and the screw, causing loosening of the assembled product, and the reliability test will not pass. Analyzing the reasons, the main reasons are the rounded corners of the concave mold inlet and the thickness of the material. The larger the thickness, the larger the radius, and the larger the rounded corners of the concave mold, the larger the radius. So choosing to expose and reduce the rounded corners of the imported material can solve the problem. Perhaps when the material is thicker, a planning and shaping shoulder can be recruited to modify the radius.

5. The structure of the metal stamping die does not match.

Due to the misalignment of the mold structure and damage to the material, it is easy for the material to break and jump onto the groove, causing the phenomenon of punching and cutting waste. The negative impact is that it will cause unevenness on the surface of the product, resulting in defective products, making after-sales processing difficult and consuming manpower and resources.

This article is from EMAR Mold Co., Ltd. For more EMAR related information, please click: www.sjt-ic.com，