精(jing)密零(ling)件加工是(shi)一(yi)種機(ji)械加工，更加精(jing)準(zhun)，是(shi)較高的生產(chan)機(ji)械和加工工藝。伴隨著現代化(hua)的發展(zhan)，精(jing)密機(ji)械加工的類型越(yue)(yue)(yue)來(lai)越(yue)(yue)(yue)多，方位越(yue)(yue)(yue)來(lai)越(yue)(yue)(yue)細，越(yue)(yue)(yue)來(lai)越(yue)(yue)(yue)系(xi)統(tong)化(hua)。機(ji)械設備(bei)由很多不一(yi)樣的小零(ling)件構成，每(mei)一(yi)個零(ling)件都(dou)起著重要的作用。

為了(le)更(geng)好地(di)保證精密(mi)零(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)(jia)工(gong)(gong)精密(mi)度，將初加(jia)(jia)工(gong)(gong)和深度加(jia)(jia)工(gong)(gong)的(de)機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)分(fen)離。因為在(zai)加(jia)(jia)工(gong)(gong)不光滑的(de)機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)時要開展(zhan)很多鉆削，產品工(gong)(gong)件(jian)(jian)(jian)承擔很大的(de)切削速度，夾持力(li)，熱值多，而(er)且機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)表層具(ju)備(bei)顯著的(de)冷作硬化狀況，存(cun)有較大的(de)內部(bu)地(di)應(ying)力(li)。如何持續加(jia)(jia)工(gong)(gong)粗機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)和細(xi)致機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)，因地(di)應(ying)力(li)的(de)再次(ci)遍布，深度加(jia)(jia)工(gong)(gong)后零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)精密(mi)度將迅(xun)速缺失(shi)。精密(mi)零(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)(jia)工(gong)(gong)線路中，常分(fen)配(pei)熱處(chu)理方法。熱處(chu)理工(gong)(gong)藝全過程的(de)部(bu)位分(fen)配(pei)：為了(le)更(geng)好地(di)提升金屬(shu)材料的(de)加(jia)(jia)工(gong)(gong)性，如淬火、熱處(chu)理等一般(ban)分(fen)配(pei)在(zai)機(ji)(ji)械(xie)零(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)(jia)工(gong)(gong)前開展(zhan)。

在機(ji)械(xie)制造業的(de)(de)發展中(zhong)，大家越(yue)來越(yue)關心精密(mi)(mi)(mi)零件加工工藝的(de)(de)品質，選用有關的(de)(de)方式方法開展解決，進一步提高(gao)了精密(mi)(mi)(mi)零件加工的(de)(de)精密(mi)(mi)(mi)度。