精(jing)密零件(jian)加工(gong)是一(yi)種機(ji)械加工(gong)，更加精(jing)準(zhun)，是較高的(de)生產機(ji)械和加工(gong)工(gong)藝。伴隨著(zhu)現代化(hua)的(de)發展，精(jing)密機(ji)械加工(gong)的(de)類型越(yue)(yue)來越(yue)(yue)多，方位越(yue)(yue)來越(yue)(yue)細，越(yue)(yue)來越(yue)(yue)系統(tong)化(hua)。機(ji)械設備由很多不一(yi)樣的(de)小零件(jian)構成，每(mei)一(yi)個零件(jian)都起著(zhu)重要的(de)作用。

為了(le)更(geng)好(hao)(hao)地(di)(di)保(bao)證精(jing)密零(ling)(ling)(ling)件加(jia)工(gong)(gong)(gong)(gong)精(jing)密度(du)(du)(du)，將(jiang)初加(jia)工(gong)(gong)(gong)(gong)和(he)深(shen)度(du)(du)(du)加(jia)工(gong)(gong)(gong)(gong)的(de)機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件分(fen)離。因為在(zai)(zai)加(jia)工(gong)(gong)(gong)(gong)不光滑的(de)機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件時要開展很多鉆削(xue)，產(chan)品工(gong)(gong)(gong)(gong)件承擔很大的(de)切削(xue)速(su)度(du)(du)(du)，夾持力(li)，熱(re)值多，而且機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件的(de)表層具備顯著(zhu)的(de)冷(leng)作硬化狀況，存有(you)較大的(de)內(nei)部地(di)(di)應(ying)(ying)力(li)。如何持續(xu)加(jia)工(gong)(gong)(gong)(gong)粗機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件和(he)細致機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件，因地(di)(di)應(ying)(ying)力(li)的(de)再次遍布，深(shen)度(du)(du)(du)加(jia)工(gong)(gong)(gong)(gong)后零(ling)(ling)(ling)件的(de)精(jing)密度(du)(du)(du)將(jiang)迅速(su)缺失。精(jing)密零(ling)(ling)(ling)件加(jia)工(gong)(gong)(gong)(gong)線路中，常分(fen)配熱(re)處理(li)方法。熱(re)處理(li)工(gong)(gong)(gong)(gong)藝全過(guo)程(cheng)的(de)部位分(fen)配：為了(le)更(geng)好(hao)(hao)地(di)(di)提升金屬(shu)材料的(de)加(jia)工(gong)(gong)(gong)(gong)性，如淬火、熱(re)處理(li)等一般分(fen)配在(zai)(zai)機(ji)(ji)(ji)(ji)械(xie)零(ling)(ling)(ling)件加(jia)工(gong)(gong)(gong)(gong)前開展。

在機(ji)械制造業的(de)(de)發展中，大(da)家越來(lai)越關(guan)心精密零(ling)件加(jia)工工藝的(de)(de)品質，選(xuan)用有關(guan)的(de)(de)方式(shi)方法開展解決，進一步提高了(le)精密零(ling)件加(jia)工的(de)(de)精密度。