是在(zai)(zai)冷沖壓加工(gong)(gong)中(zhong)，將材料加工(gong)(gong)成(cheng)零件（或半成(cheng)品）的(de)(de)(de)一種特(te)殊工(gong)(gong)藝裝備。工(gong)(gong)件在(zai)(zai)沖床的(de)(de)(de)沖壓與模(mo)(mo)(mo)具的(de)(de)(de)阻力共同作用下(xia)產生塑性(xing)形變完成(cheng)加工(gong)(gong)過程(cheng)(cheng)，沖床模(mo)(mo)(mo)具是沖壓工(gong)(gong)藝必(bi)不可少的(de)(de)(de)一部分(fen)，沖床模(mo)(mo)(mo)具的(de)(de)(de)精度很大程(cheng)(cheng)度上決定了工(gong)(gong)件加工(gong)(gong)精度。材料選擇：42CrMo、55SiCr、T8、T10、9CrSi、 6CrW2Si、Cr12MoV、H13K、W18Cr4V。