精密零件(jian)(jian)加工(gong)是一(yi)種機械(xie)加工(gong)，更加精準，是較高的(de)生產機械(xie)和加工(gong)工(gong)藝。伴(ban)隨著(zhu)(zhu)現代化的(de)發展，精密機械(xie)加工(gong)的(de)類(lei)型越(yue)來越(yue)多，方位越(yue)來越(yue)細，越(yue)來越(yue)系統化。機械(xie)設備(bei)由很多不一(yi)樣的(de)小零件(jian)(jian)構成，每一(yi)個零件(jian)(jian)都起著(zhu)(zhu)重要(yao)的(de)作(zuo)用。

為了更(geng)好地(di)(di)保證精密零(ling)(ling)件加(jia)(jia)工(gong)(gong)(gong)(gong)精密度(du)，將初加(jia)(jia)工(gong)(gong)(gong)(gong)和深(shen)度(du)加(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)機(ji)械(xie)(xie)零(ling)(ling)件分(fen)離(li)。因(yin)為在加(jia)(jia)工(gong)(gong)(gong)(gong)不(bu)光滑的(de)(de)(de)機(ji)械(xie)(xie)零(ling)(ling)件時要開展很(hen)多鉆削，產品工(gong)(gong)(gong)(gong)件承擔很(hen)大的(de)(de)(de)切(qie)削速度(du)，夾持力，熱值(zhi)多，而且機(ji)械(xie)(xie)零(ling)(ling)件的(de)(de)(de)表(biao)層具(ju)備(bei)顯著的(de)(de)(de)冷作硬化狀況(kuang)，存有較(jiao)大的(de)(de)(de)內部(bu)地(di)(di)應力。如何持續加(jia)(jia)工(gong)(gong)(gong)(gong)粗機(ji)械(xie)(xie)零(ling)(ling)件和細致(zhi)機(ji)械(xie)(xie)零(ling)(ling)件，因(yin)地(di)(di)應力的(de)(de)(de)再次遍布(bu)，深(shen)度(du)加(jia)(jia)工(gong)(gong)(gong)(gong)后零(ling)(ling)件的(de)(de)(de)精密度(du)將迅(xun)速缺失。精密零(ling)(ling)件加(jia)(jia)工(gong)(gong)(gong)(gong)線路(lu)中，常分(fen)配熱處理(li)方法(fa)。熱處理(li)工(gong)(gong)(gong)(gong)藝(yi)全過程的(de)(de)(de)部(bu)位分(fen)配：為了更(geng)好地(di)(di)提升金屬材(cai)料的(de)(de)(de)加(jia)(jia)工(gong)(gong)(gong)(gong)性，如淬火(huo)、熱處理(li)等一般(ban)分(fen)配在機(ji)械(xie)(xie)零(ling)(ling)件加(jia)(jia)工(gong)(gong)(gong)(gong)前開展。

在(zai)機械制造業的(de)發展中，大家越(yue)來越(yue)關(guan)心精(jing)密(mi)零件加工(gong)(gong)工(gong)(gong)藝的(de)品質，選用有關(guan)的(de)方(fang)式方(fang)法開展解(jie)決，進一(yi)步提高了精(jing)密(mi)零件加工(gong)(gong)的(de)精(jing)密(mi)度。