象图1面板类零件,要经过引伸,落料、翻边、冲孔等几道工序才能成型,一般需用三～四付模具冲制而成。我厂在去年制造了这个零件的复合冲模,将引伸、落料、翻边、冲孔四道工序合并在一付模具上完成,简称“四合一”冲模。用这模具已冲制 Figure 1 panel type parts, to go through an extension, blanking, burring, punching and other processes can be formed in several ways, generally need to use three to four die made of stamping. Last year, our factory made the composite die of this part, and combined the four processes of extension, blanking, burring and punching into one pair of dies, which is called “four in one” die. This mold has been punched