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钢皮冲模是用钢皮嵌进硬木层压板的槽内作为刃口的一种简易冲模,它具有制造周期短,成本低的优点。据上海电焊机厂试制三副钢皮冲模的经验,认为它效果很好,节约加工工时85％,节约钢材98％,重量可以减轻95％,而且贮藏模具的场地也可大大减小。下图是上海电焊机厂试制的直流发电机的磁极钢皮冲模。冲件材料为1.5毫米厚A_3钢。上下模均用桦木层压板(有些厂采用酚醛玻璃布板,纸质玻璃
Steel stamping die is a simple stamping die with a steel skin embedded in the groove of the hardwood laminate as a cutting edge, which has the advantages of short manufacturing cycle and low cost. According to the experience of trial manufacture of three steel punches in Shanghai Electric Welding Machine Factory, the effect is very good, saving 85% of processing time, saving 98% of steel, reducing the weight by 95%, and the space for storing molds can be greatly reduced. The following figure is a trial of Shanghai Electric Welding Machine Factory DC generator pole steel die. Stamping material is 1.5 mm thick A_3 steel. Upper and lower mold are birch laminate (some plants using phenolic glass cloth, paper glass