精密(mi)零(ling)件加工(gong)(gong)是一(yi)種機械(xie)(xie)加工(gong)(gong)，更(geng)加精準，是較高的生(sheng)產機械(xie)(xie)和加工(gong)(gong)工(gong)(gong)藝。伴隨著現代(dai)化(hua)的發展(zhan)，精密(mi)機械(xie)(xie)加工(gong)(gong)的類(lei)型(xing)越(yue)來(lai)(lai)越(yue)多，方(fang)位越(yue)來(lai)(lai)越(yue)細，越(yue)來(lai)(lai)越(yue)系(xi)統化(hua)。機械(xie)(xie)設備由很多不一(yi)樣的小零(ling)件構成(cheng)，每一(yi)個零(ling)件都(dou)起著重要(yao)的作用。

為(wei)了更好(hao)地保證精(jing)密零(ling)件(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)密度，將初加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)和(he)深度加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的機械(xie)(xie)零(ling)件(jian)(jian)分(fen)離。因為(wei)在(zai)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)不(bu)光滑的機械(xie)(xie)零(ling)件(jian)(jian)時要開(kai)展很(hen)多鉆削，產品工(gong)(gong)(gong)(gong)件(jian)(jian)承擔很(hen)大的切削速度，夾(jia)持(chi)力，熱值(zhi)多，而且機械(xie)(xie)零(ling)件(jian)(jian)的表層具備顯著(zhu)的冷作硬化狀況，存有(you)較大的內部(bu)地應(ying)力。如何持(chi)續加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)粗(cu)機械(xie)(xie)零(ling)件(jian)(jian)和(he)細致機械(xie)(xie)零(ling)件(jian)(jian)，因地應(ying)力的再(zai)次(ci)遍布，深度加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)零(ling)件(jian)(jian)的精(jing)密度將迅速缺失。精(jing)密零(ling)件(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)線路中，常分(fen)配(pei)熱處理(li)方(fang)法(fa)。熱處理(li)工(gong)(gong)(gong)(gong)藝全過程的部(bu)位分(fen)配(pei)：為(wei)了更好(hao)地提(ti)升(sheng)金屬材料(liao)的加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)性(xing)，如淬火、熱處理(li)等一(yi)般分(fen)配(pei)在(zai)機械(xie)(xie)零(ling)件(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)前開(kai)展。

在機械制(zhi)造(zao)業的發展中(zhong)，大家越來越關心(xin)精密零件加工工藝的品質，選用有關的方(fang)式方(fang)法開展解決，進(jin)一步提(ti)高了精密零件加工的精密度。