What is the difference between precision metal stamping and ordinary metal stamping

Metal stamping parts are widely used in various industries. According to different products, the dimensional accuracy requirements of metal stamping parts are different. For precision industries such as watches and medical treatment, the dimensional accuracy of metal stamping parts is relatively high. So what is the difference between precision metal stamping and ordinary metal stamping, and what factors affect the precision?

Metal stamping

What is ordinary metal stamping

Ordinary stamping does not require high precision of stamping parts, and the thickness of the substrate is relatively thick. It does not need cutting, cutting, stretching and other processes, and ordinary stamping can meet the requirements. Ordinary stamping processing is generally aimed at large metal stamping, such as stamping bowls and basins. Larger and smaller ones will not affect the function of loading rice. It can be called ordinary stamping. Generally speaking, the difference between precision stamping and ordinary stamping lies in the requirements for stamping equipment and the accuracy of stamping parts required. If the user requires high precision stamping parts and a large amount of stamping parts, you can choose to use precision stamping. On the contrary, if the precision requirements of the stamping parts are not high, and the stamping is made of ordinary sheet materials.

What is precision metal stamping

Precision stamping is a material processing method developed on the basis of ordinary stamping technology. It is a combination of precision stamping or precision stamping and other forming processes by improving the guiding accuracy and reducing the gap between the convex and concave dies of the metal stamping die. Process acquisition.

Precision stamping has higher requirements on the precision of stamping parts. In the process of processing and production, stamping coils or forming, it is necessary to consider the high technical requirements of appropriate precision punches, molds, materials, lubricants, etc. In the production process of high-precision metal stamping, mold masters are required to have a considerable foundation in stamping die design, understand material properties and material lubrication.

Factors affecting the accuracy of precision metal stamping parts:

1. The order of precision metal stamping is wrong.

2. The springback in the precision metal stamping and blanking process, the shape of the part in the previous process is inconsistent with the shape of the supporting surface of the mold working part in the next process, which makes the precision stamping part deform during the blanking process. This affects the dimensional accuracy.

3. Due to the poor positioning of the precision metal stamping, the blanks move during the blanking process. Or the inaccurate positioning caused by the defects (prismatic degree, missing edges, etc.) of the shearing piece can cause the size to be out of tolerance.

4. The quality of raw materials selected for precision metal stamping is inferior.

5. The cutting edge size of precision metal stamping die is out of tolerance

6. Precision metal stamping multi-process parts have broken the principle of equal volume during deformation due to improper adjustment of the previous process or wear of the rounded corners, and caused the size change after punching.

7. The shape of the precision metal stamping stamping plate is not good