在冷冲压加工中,时常会遇见各种各样的小型零件。图1所示是我厂生产的某种插针零件,材料为H62。该零件尺寸小,精度高,冲制材料厚,落料难,而且凸模工作部分易损坏。过去采用环氧树脂粘接固定凸模时,修理周期长,不能满足生产的需要。为解决上述问题,我们研制了锥柄固定凸模法,使用 In the cold stamping process, often meet a variety of small parts. Figure 1 shows some of my factory production pin parts, materials for the H62. The small size of the parts, high precision, punching thick material, blanking difficult, but also easy to damage the working part of the punch. Epoxy resin used in the past when the fixed punch, the repair cycle is long, can not meet the production needs. To solve the above problems, we have developed a taper shank fixed punch method, use