精(jing)密(mi)零(ling)件加(jia)工(gong)是一(yi)(yi)種機(ji)(ji)械加(jia)工(gong)，更加(jia)精(jing)準，是較(jiao)高的生產機(ji)(ji)械和加(jia)工(gong)工(gong)藝(yi)。伴隨著(zhu)現代化的發展，精(jing)密(mi)機(ji)(ji)械加(jia)工(gong)的類(lei)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)系統化。機(ji)(ji)械設(she)備(bei)由(you)很(hen)多不(bu)一(yi)(yi)樣的小零(ling)件構成(cheng)，每一(yi)(yi)個零(ling)件都起著(zhu)重(zhong)要的作用。

為(wei)了更好(hao)地(di)(di)保證精(jing)(jing)密零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)工(gong)(gong)精(jing)(jing)密度(du)，將初加(jia)工(gong)(gong)和深度(du)加(jia)工(gong)(gong)的(de)(de)機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)分(fen)離。因(yin)為(wei)在加(jia)工(gong)(gong)不光滑的(de)(de)機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)時要(yao)開展(zhan)(zhan)很(hen)多鉆(zhan)削，產品(pin)工(gong)(gong)件(jian)(jian)(jian)承(cheng)擔很(hen)大的(de)(de)切削速度(du)，夾持(chi)力(li)，熱(re)(re)(re)值多，而且機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)表層具備顯著的(de)(de)冷作硬化狀(zhuang)況，存有較(jiao)大的(de)(de)內部地(di)(di)應力(li)。如(ru)何持(chi)續加(jia)工(gong)(gong)粗機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)和細致機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)，因(yin)地(di)(di)應力(li)的(de)(de)再次遍(bian)布，深度(du)加(jia)工(gong)(gong)后(hou)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)精(jing)(jing)密度(du)將迅速缺失。精(jing)(jing)密零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)工(gong)(gong)線(xian)路中，常分(fen)配(pei)(pei)熱(re)(re)(re)處理(li)方法。熱(re)(re)(re)處理(li)工(gong)(gong)藝全(quan)過程的(de)(de)部位(wei)分(fen)配(pei)(pei)：為(wei)了更好(hao)地(di)(di)提(ti)升金屬材料的(de)(de)加(jia)工(gong)(gong)性，如(ru)淬火(huo)、熱(re)(re)(re)處理(li)等一般分(fen)配(pei)(pei)在機(ji)械(xie)(xie)零(ling)(ling)(ling)(ling)(ling)件(jian)(jian)(jian)加(jia)工(gong)(gong)前(qian)開展(zhan)(zhan)。

在機械制造(zao)業的發展(zhan)中，大家越(yue)來越(yue)關心精(jing)密(mi)零件加工(gong)工(gong)藝(yi)的品質，選用(yong)有關的方式方法開展(zhan)解決，進一步(bu)提高了精(jing)密(mi)零件加工(gong)的精(jing)密(mi)度。