我厂生产的175型柴油机上的球面垫圈如图1,原用45钢车削加工,后改冷镦成形,工效比原来提高20倍,节约材料20％。先将5毫米厚中碳钢板剪成条料,在冲床上落料冲孔如图2。然后在100吨冲床上冷镦球面,模具如图3所示,坯件在下模上以φ25毫米的刻线定位,由于上模 The spherical washer on the 175 diesel engine produced by our factory is shown in Fig.1. The original 45 steel turning machining was changed to cold heading, and the work efficiency was increased by 20 times and the material saving was 20%. First 5 mm thick carbon steel cut into strips, blanking punching punch in Figure 2. Then punch in the 100-ton cold heading ball, the mold shown in Figure 3, the blanks in the lower die to φ25 mm engraved line positioning, the upper die