模具加工廠家一(yi)般成(cheng)形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)形(xing)狀比較復雜、尺(chi)寸(cun)精(jing)度(du)較高和表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)粗糙度(du)數值較小，而(er)且多有(you)熱處理要求(qiu)，各(ge)相關零(ling)件(jian)(jian)的(de)(de)(de)成(cheng)形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)一(yi)致性(xing)和協調(diao)性(xing)都(dou)有(you)比較嚴格的(de)(de)(de)要求(qiu)。成(cheng)形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)加工(gong)(gong)是模(mo)(mo)具(ju)工(gong)(gong)藝工(gong)(gong)作的(de)(de)(de)重點(dian)和難(nan)點(dian)之(zhi)一(yi)。各(ge)種模(mo)(mo)具(ju)零(ling)件(jian)(jian)的(de)(de)(de)加工(gong)(gong)都(dou)從外形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)加工(gong)(gong)開始，并為成(cheng)形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)和結構表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)后續(xu)加工(gong)(gong)奠定(ding)基礎(chu)。在(zai)模(mo)(mo)具(ju)零(ling)件(jian)(jian)的(de)(de)(de)毛坯設計和加工(gong)(gong)中，應使外形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)加工(gong)(gong)余量適當(dang)，避免(mian)材料浪(lang)費和減少(shao)后續(xu)加工(gong)(gong)工(gong)(gong)作量。成(cheng)形(xing)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)是指在(zai)模(mo)(mo)具(ju)中直接決定(ding)產品零(ling)件(jian)(jian)形(xing)狀、尺(chi)寸(cun)、精(jing)度(du)的(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)及(ji)(ji)與這些表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)協調(diao)的(de)(de)(de)相關表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)。例如沖(chong)裁(cai)模(mo)(mo)中的(de)(de)(de)凹模(mo)(mo)、凸模(mo)(mo)工(gong)(gong)作表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)及(ji)(ji)與工(gong)(gong)作表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)協調(diao)相關的(de)(de)(de)卸料板、固定(ding)板等型(xing)孔表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)。形(xing)面(mian)(mian)(mian)復雜有(you)些產品如汽車覆蓋件(jian)(jian)、飛機零(ling)件(jian)(jian)、玩具(ju)、家用電器(qi)，其形(xing)狀的(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)(mian)是由多種曲面(mian)(mian)(mian)組合而(er)成(cheng)，因此，模(mo)(mo)具(ju)型(xing)腔面(mian)(mian)(mian)就(jiu)很復雜。