精密零(ling)件加工(gong)是(shi)一(yi)種機(ji)械(xie)(xie)加工(gong)，更加精準(zhun)，是(shi)較高的生產機(ji)械(xie)(xie)和加工(gong)工(gong)藝。伴隨著(zhu)現代化的發展，精密機(ji)械(xie)(xie)加工(gong)的類型越來越多(duo)，方位越來越細，越來越系統化。機(ji)械(xie)(xie)設(she)備由很多(duo)不(bu)一(yi)樣(yang)的小零(ling)件構成，每(mei)一(yi)個(ge)零(ling)件都起著(zhu)重要(yao)的作用。

為了更(geng)(geng)好地(di)(di)保證精密零(ling)(ling)(ling)件(jian)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)精密度(du)(du)，將(jiang)初加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)和深度(du)(du)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)的機械零(ling)(ling)(ling)件(jian)分(fen)離。因(yin)為在加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)不光滑的機械零(ling)(ling)(ling)件(jian)時要開(kai)展很多鉆削，產(chan)品工(gong)(gong)(gong)件(jian)承擔很大的切削速度(du)(du)，夾持力，熱值多，而且機械零(ling)(ling)(ling)件(jian)的表層具(ju)備顯著的冷(leng)作硬化(hua)狀況，存有較大的內部(bu)地(di)(di)應力。如何持續加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)粗機械零(ling)(ling)(ling)件(jian)和細致機械零(ling)(ling)(ling)件(jian)，因(yin)地(di)(di)應力的再次(ci)遍布，深度(du)(du)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)后(hou)零(ling)(ling)(ling)件(jian)的精密度(du)(du)將(jiang)迅速缺(que)失。精密零(ling)(ling)(ling)件(jian)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)線路中，常(chang)分(fen)配(pei)熱處(chu)理方法(fa)。熱處(chu)理工(gong)(gong)(gong)藝全過程的部(bu)位分(fen)配(pei)：為了更(geng)(geng)好地(di)(di)提升(sheng)金屬材料的加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)性，如淬火、熱處(chu)理等一般分(fen)配(pei)在機械零(ling)(ling)(ling)件(jian)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)前開(kai)展。

在機械制造(zao)業的發展中，大家越來越關心(xin)精密(mi)零件(jian)加工工藝的品(pin)質，選用有(you)關的方式方法(fa)開展解決，進一步提高了(le)精密(mi)零件(jian)加工的精密(mi)度。