精密零件(jian)加工是一(yi)種機械(xie)加工，更加精準，是較高的(de)生產機械(xie)和(he)加工工藝。伴(ban)隨著現(xian)代化的(de)發展，精密機械(xie)加工的(de)類型越(yue)來(lai)越(yue)多(duo)，方(fang)位越(yue)來(lai)越(yue)細，越(yue)來(lai)越(yue)系統(tong)化。機械(xie)設備由很(hen)多(duo)不一(yi)樣的(de)小零件(jian)構(gou)成，每一(yi)個(ge)零件(jian)都(dou)起(qi)著重要的(de)作用。

為了更好(hao)地(di)保(bao)證精密(mi)零(ling)(ling)件(jian)(jian)加工(gong)(gong)(gong)(gong)精密(mi)度，將初加工(gong)(gong)(gong)(gong)和深(shen)度加工(gong)(gong)(gong)(gong)的(de)(de)機械(xie)零(ling)(ling)件(jian)(jian)分離。因為在加工(gong)(gong)(gong)(gong)不光(guang)滑的(de)(de)機械(xie)零(ling)(ling)件(jian)(jian)時要開(kai)展很多鉆削(xue)，產品(pin)工(gong)(gong)(gong)(gong)件(jian)(jian)承(cheng)擔(dan)很大的(de)(de)切削(xue)速度，夾持(chi)力，熱(re)(re)值(zhi)多，而且機械(xie)零(ling)(ling)件(jian)(jian)的(de)(de)表層具(ju)備顯(xian)著(zhu)的(de)(de)冷作硬化狀況(kuang)，存有較(jiao)大的(de)(de)內部地(di)應力。如(ru)何(he)持(chi)續加工(gong)(gong)(gong)(gong)粗(cu)機械(xie)零(ling)(ling)件(jian)(jian)和細致機械(xie)零(ling)(ling)件(jian)(jian)，因地(di)應力的(de)(de)再(zai)次(ci)遍布(bu)，深(shen)度加工(gong)(gong)(gong)(gong)后零(ling)(ling)件(jian)(jian)的(de)(de)精密(mi)度將迅速缺失。精密(mi)零(ling)(ling)件(jian)(jian)加工(gong)(gong)(gong)(gong)線路中，常(chang)分配熱(re)(re)處(chu)理(li)(li)方法。熱(re)(re)處(chu)理(li)(li)工(gong)(gong)(gong)(gong)藝全過(guo)程的(de)(de)部位分配：為了更好(hao)地(di)提升金屬材料的(de)(de)加工(gong)(gong)(gong)(gong)性，如(ru)淬火、熱(re)(re)處(chu)理(li)(li)等一般分配在機械(xie)零(ling)(ling)件(jian)(jian)加工(gong)(gong)(gong)(gong)前(qian)開(kai)展。

在機械制造(zao)業的發展(zhan)中，大家越來越關心精(jing)(jing)密(mi)零件加工工藝的品質，選用有(you)關的方式方法(fa)開展(zhan)解決，進一步提(ti)高了精(jing)(jing)密(mi)零件加工的精(jing)(jing)密(mi)度。