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我厂仿造西德进口的吸尘打腊机,其中有一零件,如图一所示,上有两只对称半圆孔,其理想的加工方法是一只凸模一次直冲两只孔。但怕上孔的废料挡住凸模刃口,不能再冲下孔,因废料是不能当刃口的。 我们实践的结果是单凸模直冲双孔是可以的,如图二所示。它的优点是工艺简单、工效高、零件孔的尺寸精度和对称性较好。在工作时凸模冲完上孔后,刃口粘附废料,紧接着冲下孔,这时的材料厚度相当于2t,
I plant imitation West Germany imported vacuum waxing machine, which has a part, as shown in Figure 1, there are two symmetrical semi-circular hole, the ideal processing method is a punch straight into two holes. However, the fear of blocking the punch hole punch, can not punch down the hole, because the waste can not be a cutting edge. The result of our practice is a single punch straight punched holes is possible, as shown in Figure II. Its advantage is the simple process, high work efficiency, part hole size accuracy and symmetry better. Punching the punch at work after the hole, the edge of the adhesion of waste, then washed down the hole, then the thickness of the material is equivalent to 2t,