精(jing)密(mi)零件加工是(shi)(shi)一(yi)種機械(xie)加工，更加精(jing)準，是(shi)(shi)較高的(de)生產機械(xie)和加工工藝。伴隨著(zhu)現(xian)代化(hua)的(de)發展，精(jing)密(mi)機械(xie)加工的(de)類型越(yue)來(lai)越(yue)多(duo)，方位越(yue)來(lai)越(yue)細，越(yue)來(lai)越(yue)系統化(hua)。機械(xie)設備由很多(duo)不(bu)一(yi)樣的(de)小零件構成，每一(yi)個零件都起著(zhu)重要(yao)的(de)作用。

為了更好地保證精密零(ling)(ling)件(jian)(jian)(jian)(jian)加(jia)工(gong)(gong)(gong)精密度(du)(du)(du)，將初加(jia)工(gong)(gong)(gong)和深度(du)(du)(du)加(jia)工(gong)(gong)(gong)的(de)(de)機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)分離。因(yin)為在加(jia)工(gong)(gong)(gong)不光滑的(de)(de)機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)時(shi)要開展很(hen)多(duo)鉆(zhan)削，產品(pin)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)承擔很(hen)大的(de)(de)切(qie)削速度(du)(du)(du)，夾持力，熱(re)值多(duo)，而且(qie)機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)的(de)(de)表層(ceng)具備顯著的(de)(de)冷作硬(ying)化狀況，存有較大的(de)(de)內部地應力。如(ru)何持續加(jia)工(gong)(gong)(gong)粗機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)和細(xi)致機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)，因(yin)地應力的(de)(de)再(zai)次遍布，深度(du)(du)(du)加(jia)工(gong)(gong)(gong)后零(ling)(ling)件(jian)(jian)(jian)(jian)的(de)(de)精密度(du)(du)(du)將迅速缺(que)失(shi)。精密零(ling)(ling)件(jian)(jian)(jian)(jian)加(jia)工(gong)(gong)(gong)線路中(zhong)，常(chang)分配熱(re)處(chu)理(li)方法。熱(re)處(chu)理(li)工(gong)(gong)(gong)藝(yi)全過程的(de)(de)部位分配：為了更好地提升金屬材料(liao)的(de)(de)加(jia)工(gong)(gong)(gong)性，如(ru)淬火、熱(re)處(chu)理(li)等一般分配在機械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)加(jia)工(gong)(gong)(gong)前開展。

在機械制造業(ye)的(de)發(fa)展中，大家(jia)越來(lai)越關心精密(mi)零(ling)件(jian)加工(gong)工(gong)藝的(de)品質，選用有關的(de)方(fang)式方(fang)法開(kai)展解(jie)決，進一步(bu)提(ti)高了精密(mi)零(ling)件(jian)加工(gong)的(de)精密(mi)度。