精(jing)密(mi)零(ling)件加工是(shi)一(yi)種機械(xie)(xie)加工，更(geng)加精(jing)準(zhun)，是(shi)較高(gao)的生產機械(xie)(xie)和加工工藝。伴隨著(zhu)現(xian)代化的發(fa)展(zhan)，精(jing)密(mi)機械(xie)(xie)加工的類(lei)型越(yue)(yue)(yue)來越(yue)(yue)(yue)多(duo)，方位(wei)越(yue)(yue)(yue)來越(yue)(yue)(yue)細，越(yue)(yue)(yue)來越(yue)(yue)(yue)系(xi)統化。機械(xie)(xie)設備由(you)很(hen)多(duo)不一(yi)樣的小零(ling)件構成，每一(yi)個零(ling)件都起著(zhu)重要的作(zuo)用。

為了(le)更(geng)好地保證精(jing)(jing)密(mi)零(ling)(ling)件(jian)(jian)(jian)加工(gong)(gong)(gong)(gong)精(jing)(jing)密(mi)度(du)(du)，將初加工(gong)(gong)(gong)(gong)和深度(du)(du)加工(gong)(gong)(gong)(gong)的(de)(de)機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)分(fen)離。因(yin)為在(zai)加工(gong)(gong)(gong)(gong)不光滑的(de)(de)機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)時要(yao)開展(zhan)很(hen)多鉆削，產品工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)承擔很(hen)大(da)(da)的(de)(de)切削速度(du)(du)，夾持力，熱(re)值多，而且機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)的(de)(de)表層(ceng)具備顯(xian)著的(de)(de)冷(leng)作(zuo)硬化(hua)狀(zhuang)況，存(cun)有(you)較大(da)(da)的(de)(de)內(nei)部地應力。如(ru)何持續(xu)加工(gong)(gong)(gong)(gong)粗機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)和細致(zhi)機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)，因(yin)地應力的(de)(de)再次(ci)遍布，深度(du)(du)加工(gong)(gong)(gong)(gong)后零(ling)(ling)件(jian)(jian)(jian)的(de)(de)精(jing)(jing)密(mi)度(du)(du)將迅速缺失。精(jing)(jing)密(mi)零(ling)(ling)件(jian)(jian)(jian)加工(gong)(gong)(gong)(gong)線路中(zhong)，常分(fen)配(pei)熱(re)處理方法(fa)。熱(re)處理工(gong)(gong)(gong)(gong)藝全過程的(de)(de)部位(wei)分(fen)配(pei)：為了(le)更(geng)好地提升金屬材(cai)料的(de)(de)加工(gong)(gong)(gong)(gong)性，如(ru)淬火、熱(re)處理等一般分(fen)配(pei)在(zai)機(ji)械(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)加工(gong)(gong)(gong)(gong)前開展(zhan)。

在機械制造業(ye)的發展中，大家越(yue)來越(yue)關心精(jing)密零件(jian)加工(gong)工(gong)藝的品(pin)質(zhi)，選用有關的方式方法開展解決，進(jin)一步提(ti)高了精(jing)密零件(jian)加工(gong)的精(jing)密度。