图1所示为1mm厚镀锌铁皮的垫片,产量较大,每年有数万件。该零件原工艺为:先在剪床上剪成16mm宽的长条料,在通用冲模上切成26mm长的小方块,再用组合冲模冲φ8.5mm的孔。这样,工序多工效低,加上零件小、料薄,手工取放很不安全。为了解决上述问题,我们设计了无废料多件级进式冲裁模。从排料图(见图2)可知,坯料是3个零件宽度的长条料,在第一工步先冲出6个φ8.5mm的圆孔,第二工步将2号件冲下,第三工步用“T”形冲头把1、 Shown in Figure 1 is a 1mm thick galvanized sheet metal gasket, yield larger, tens of thousands of pieces each year. The parts of the original process: first cut in the shear bed 16mm wide strip, cut into a 26mm-long small box on the common die, and then combined punch Chong φ8.5mm hole. In this way, the process efficiency is low, with small parts, thin material, hand pick and place is not safe. In order to solve the above problems, we designed a non-scrap multi-stage progressive blanking die. From the discharge figure (see Figure 2) shows, the blank is the width of the three parts of the material, the first step in the first out of 6 φ8.5mm round hole, the second step of the second piece washed down, The third step with “T” -shaped punch 1,