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用图1所示的简易冲模,冲制铜、铁、铝、钢、纸垫圈零件,效果较好。该模具由凹模、凸模、凹凸模三个主要零件组成,材料40C_r钢,刃口粗糙度为Ra 0.8,HRC45～50。在凹凸模上端装有2～3个橡胶圈。为避免找正的麻烦,做一个定位底板,用于固定凹模(见图1下部双点划线)。该模具适用于小批量生产。冲制过程:先冲外圆,随即中间凸模下降冲内孔。由于橡胶被压缩,凹凸模相对提起,即将垫圈冲成。
With the simple die shown in Figure 1, punching copper, iron, aluminum, steel, paper washer parts, the better. The mold is composed of three main parts: a concave die, a convex die and a concave and convex die. The material 40C_r steel has the edge roughness Ra 0.8 and the HRC 45-50. 2 ~ 3 rubber rings on the top of the punch and die. In order to avoid the trouble of fixing, a positioning base plate is used for fixing the die (see the dashed line in the lower part of FIG. 1). The mold is suitable for small batch production. Punching process: first punch red circle, then the middle punch down punch hole. As the rubber is compressed, the punch raised relatively, about to be washed into the washer.