What are the requirements and control principles for the quality of automotive stamping parts?

2023-03-28 09:50:24

Automotive stamping parts indicate that since stamping parts have developed into large-scale and complex parts, the quality requirements for stamping parts have become more and more stringent. In order to achieve these goals, automobile stamping parts manufacturers have proposed relevant quality control principles, which are reflected in precision. , precision, and sophistication.

In order to meet the precision principle of stamping parts, the number of processes of drawing parts needs to be determined through drawing process calculation, because it is not only related to factors such as material properties, drawing height, number of drawing steps, etc., but also related to drawing diameter. , material thickness and other conditions.

The second is the fine principle of stamping parts. The number of processes as a bending part mainly depends on the complexity of its structural shape, so it needs to be determined according to the number of bending angles, relative position and bending direction.

Now that the requirements of precision and fineness have been met, the principle of exquisiteness cannot be ignored. When the cross-section quality and dimensional accuracy of stamping parts are high, it can be considered to add a trimming process after the punching process, or directly adopt fine blanking. process, so as to obtain exquisite stamping parts.

When making stamping parts with simple shapes, it is enough to use a single-process mold to complete it. However, when punching workpieces with complex shapes, due to the limited structure or strength of the mold, the inner and outer contours should be divided into several parts for punching, so it is necessary to Multi-channel metal stamping process, if necessary, continuous die can also be used.

In order to ensure the quality of precision metal stamping parts and improve the stability of the process, it is common to increase the number of processes, such as additional positioning process hole punching for bending parts, increasing deformation and reducing hole punching in the forming process to transfer the deformation area, etc. , can really help to improve the quality of stamping parts.