產品(pin)在加工(gong)(gong)(gong)(gong)的(de)(de)時候，根據(ju)不(bu)(bu)同(tong)的(de)(de)產品(pin)要(yao)(yao)求要(yao)(yao)進(jin)行(xing)不(bu)(bu)同(tong)程(cheng)度(du)的(de)(de)加工(gong)(gong)(gong)(gong)，加工(gong)(gong)(gong)(gong)程(cheng)度(du)需(xu)要(yao)(yao)進(jin)行(xing)劃分，如果對(dui)精(jing)度(du)要(yao)(yao)求不(bu)(bu)高(gao)，那么進(jin)行(xing)一(yi)個簡單的(de)(de)粗加工(gong)(gong)(gong)(gong)階段就行(xing)了。產品(pin)的(de)(de)進(jin)度(du)要(yao)(yao)求越(yue)(yue)來(lai)(lai)越(yue)(yue)嚴格，后續就要(yao)(yao)進(jin)行(xing)半精(jing)加工(gong)(gong)(gong)(gong)和精(jing)加工(gong)(gong)(gong)(gong)階段。零(ling)(ling)(ling)件加工(gong)(gong)(gong)(gong)表(biao)面(mian)上，不(bu)(bu)應有(you)劃痕、擦傷(shang)等(deng)損傷(shang)零(ling)(ling)(ling)件表(biao)面(mian)的(de)(de)缺(que)陷，加工(gong)(gong)(gong)(gong)的(de)(de)螺紋表(biao)面(mian)不(bu)(bu)允許(xu)有(you)黑皮、磕碰、亂扣和毛(mao)刺等(deng)缺(que)陷。所有(you)需(xu)要(yao)(yao)進(jin)行(xing)涂裝的(de)(de)鋼鐵制件表(biao)面(mian)在涂漆(qi)前，必(bi)須將鐵銹、氧化(hua)皮、油(you)脂(zhi)、灰塵、泥土、鹽和污物(wu)等(deng)除去。精(jing)密(mi)零(ling)(ling)(ling)件加工(gong)(gong)(gong)(gong)其實(shi)是(shi)機(ji)械(xie)加工(gong)(gong)(gong)(gong)的(de)(de)一(yi)種(zhong)，但是(shi)因為(wei)對(dui)零(ling)(ling)(ling)件的(de)(de)加工(gong)(gong)(gong)(gong)精(jing)密(mi)度(du)較高(gao)，對(dui)生產機(ji)械(xie)及流程(cheng)要(yao)(yao)求也(ye)比(bi)較高(gao)。隨(sui)著工(gong)(gong)(gong)(gong)業化(hua)發展(zhan)，精(jing)密(mi)機(ji)械(xie)加工(gong)(gong)(gong)(gong)分類越(yue)(yue)來(lai)(lai)越(yue)(yue)多(duo)，方向越(yue)(yue)來(lai)(lai)越(yue)(yue)細，大(da)型機(ji)械(xie)加工(gong)(gong)(gong)(gong)廠，越(yue)(yue)來(lai)(lai)越(yue)(yue)化(hua)。

采用數控(kong)操作(zuo)，可(ke)減少生產(chan)(chan)工(gong)(gong)人(ren)，節約生產(chan)(chan)成(cheng)本(ben)；采用自(zi)動檢測及監控(kong)裝置(zhi)，有利(li)于(yu)提高工(gong)(gong)件(jian)的(de)(de)穩定性。高精(jing)細(xi)(xi)機(ji)械制(zhi)造工(gong)(gong)藝離不開高精(jing)細(xi)(xi)設(she)備的(de)(de)使用，其中精(jing)細(xi)(xi)設(she)備的(de)(de)配件(jian)產(chan)(chan)品需要杰出的(de)(de)物(wu)理安穩性能作(zuo)為基礎，尤其是耐高溫，耐腐蝕(shi)的(de)(de)耐久壽命作(zuo)業，這關于(yu)材(cai)(cai)料(liao)的(de)(de)挑選來說硬(ying)(ying)(ying)質合金(jin)材(cai)(cai)料(liao)無疑是首(shou)要挑選。對材(cai)(cai)料(liao)硬(ying)(ying)(ying)度的(de)(de)要求，在一些特殊情況下，材(cai)(cai)料(liao)的(de)(de)硬(ying)(ying)(ying)度會越高越好，于(yu)加工(gong)(gong)零(ling)件(jian)的(de)(de)硬(ying)(ying)(ying)度要求，加工(gong)(gong)之后的(de)(de)材(cai)(cai)料(liao)不應(ying)該太硬(ying)(ying)(ying)，如果其比(bi)機(ji)床(chuang)(chuang)部件(jian)或者機(ji)床(chuang)(chuang)刀(dao)具還硬(ying)(ying)(ying)的(de)(de)話是沒(mei)法進行加工(gong)(gong)的(de)(de)。

設計(ji)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun):在零件(jian)圖上用(yong)(yong)以確定(ding)(ding)其(qi)它點、線(xian)、面(mian)位(wei)置(zhi)的(de)(de)(de)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)設計(ji)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。工(gong)(gong)(gong)(gong)藝基(ji)(ji)準(zhun)(zhun)(zhun)(zhun):零件(jian)在加工(gong)(gong)(gong)(gong)和裝(zhuang)配過程中(zhong)所使用(yong)(yong)的(de)(de)(de)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)工(gong)(gong)(gong)(gong)藝基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。工(gong)(gong)(gong)(gong)藝基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)按用(yong)(yong)途不同又分為(wei)裝(zhuang)配基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)、測(ce)量基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)及(ji)定(ding)(ding)位(wei)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。(1)裝(zhuang)配基(ji)(ji)準(zhun)(zhun)(zhun)(zhun):裝(zhuang)配時用(yong)(yong)以確定(ding)(ding)零件(jian)在部件(jian)或產品(pin)中(zhong)的(de)(de)(de)位(wei)置(zhi)的(de)(de)(de)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)裝(zhuang)配基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。(2)測(ce)量基(ji)(ji)準(zhun)(zhun)(zhun)(zhun):用(yong)(yong)以檢驗已加工(gong)(gong)(gong)(gong)表面(mian)的(de)(de)(de)尺寸及(ji)位(wei)置(zhi)的(de)(de)(de)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，cnc精密(mi)機械(xie)加工(gong)(gong)(gong)(gong)，稱(cheng)(cheng)為(wei)測(ce)量基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。(3)定(ding)(ding)位(wei)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun):加工(gong)(gong)(gong)(gong)時工(gong)(gong)(gong)(gong)件(jian)定(ding)(ding)位(wei)所用(yong)(yong)的(de)(de)(de)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)定(ding)(ding)位(wei)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。作(zuo)為(wei)定(ding)(ding)位(wei)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)的(de)(de)(de)表面(mian)(或線(xian)、點)，合(he)肥機械(xie)加工(gong)(gong)(gong)(gong)，在道(dao)工(gong)(gong)(gong)(gong)序(xu)中(zhong)只能選擇未加工(gong)(gong)(gong)(gong)的(de)(de)(de)毛坯表面(mian)，這種定(ding)(ding)位(wei)表面(mian)稱(cheng)(cheng)粗基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。在以后的(de)(de)(de)各個工(gong)(gong)(gong)(gong)序(xu)中(zhong)就可采用(yong)(yong)已加工(gong)(gong)(gong)(gong)表面(mian)作(zuo)為(wei)定(ding)(ding)位(wei)基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)，這種定(ding)(ding)位(wei)表面(mian)稱(cheng)(cheng)精基(ji)(ji)準(zhun)(zhun)(zhun)(zhun)。