According to the function and position, it can be divided into three types: external covering, internal covering and skeleton covering. They are different from ordinary stamping parts in process design, die processing, equipment selection and quality control.
The basic process of automobile panel stamping includes blanking, pre-bending, drawing, trimming, punching, flanging and shaping. The typical structure of automobile panel generally needs 4 ~ 6 processes, and some processes can be combined as needed, such as blanking and drawing, trimming and punching, flanging and shaping.