The materials for stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal sheet and strip materials, such as carbon steel sheets, alloy steel sheets, spring steel sheets, galvanized sheets, tin-plated sheets, stainless steel sheets, copper and copper alloys Plate, aluminum and aluminum alloy plate, etc. The following editors have sorted out some reasons for the inaccurate precision of metal stamping parts for your reference.

1. The quality of raw materials is poor.

2. Due to the improper adjustment of the previous process or the wear of the rounded corners of the multi-process parts, the principle of equal volume during deformation is destroyed, causing the size change after blanking.

3. Due to poor positioning during operation, or the positioning mechanism is not well designed, the blank moves during the blanking process. Or the inaccurate positioning caused by the defects of the shear parts (prism, missing edge, etc.) can cause the size to exceed tolerance.

4. The blanking sequence is incorrect.

5. The size of the die cutting edge is out of tolerance

6. The springback in the blanking process of precision stamping parts, the shape of the part in the previous process and the shape of the supporting surface of the working part of the mold in the next process are inconsistent, so that the parts of precision stamping parts are deformed during the blanking process, and the blanking is completed. Afterwards, elastic recovery occurs, thus affecting the dimensional accuracy.