The technicality of drawing parts is the first problem to be considered in drawing process of panels. Only by designing a good technicality drawing part can we ensure no wrinkling, no cracking or less wrinkling and less cracking in drawing process. In the design of drawing parts, not only the variable design such as punching direction, punching position, blanking surface shape, drawing rib shape and configuration, process supplement should be considered, but also the process supplement should be added reasonably to determine the blanking surface correctly.
The key of forming technology is how to coordinate the relationship between variables, which not only meets the drawing of the process, but also meets the needs of the design and manufacturing process of the process die, and creates favorable conditions for the next melting and flanging process.
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