由于工作需要,我厂接受了一批汽车制动蹄的生产任务。其中WJ120汽车制动蹄垫板(如图1,垫板材料采用08优质钢板)的加工,原方案准备分五道工序进行,即①落料,②裁口,③冲孔,④用钻头锪窝,⑤压弯。若按此方案设计,虽然模具加工简单,但模具需要量大,加工工时浪费较大,单件加工费用高。我们经过反复分析、研究,将②、③、④三道工序合并为一道工序,设计了一套垫板一次裁口、冲孔、压窝复合模 Due to work needs, I plant a group of cars to accept the production of brake shoes. One WJ120 vehicle brake shoe pad (Figure 1, the pad material 08 high-quality steel) processing, the original program is divided into five processes, namely ① blanking, ② cut mouth, ③ punching, ④ bit 锪Wo, ⑤ bend. According to this program design, although the mold is simple, but the mold needs a large amount of processing time wasted, a single high processing costs. After repeated analysis and research, we merged the three processes of ②, ③ and ④ into a single process, and designed a set of shim plate cutting, punching,