設(she)計基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun):在(zai)(zai)零(ling)件(jian)(jian)圖(tu)上用(yong)(yong)以(yi)確定(ding)(ding)(ding)其它點、線(xian)、面(mian)位(wei)(wei)置(zhi)的(de)(de)(de)(de)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)(wei)設(she)計基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。工(gong)(gong)藝(yi)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun):零(ling)件(jian)(jian)在(zai)(zai)加(jia)工(gong)(gong)和(he)裝(zhuang)配過程中所使用(yong)(yong)的(de)(de)(de)(de)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)(wei)工(gong)(gong)藝(yi)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。工(gong)(gong)藝(yi)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)按用(yong)(yong)途不同又分為(wei)(wei)裝(zhuang)配基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)、測量(liang)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)及定(ding)(ding)(ding)位(wei)(wei)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。(1)裝(zhuang)配基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun):裝(zhuang)配時用(yong)(yong)以(yi)確定(ding)(ding)(ding)零(ling)件(jian)(jian)在(zai)(zai)部件(jian)(jian)或(huo)產(chan)品中的(de)(de)(de)(de)位(wei)(wei)置(zhi)的(de)(de)(de)(de)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)(wei)裝(zhuang)配基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。(2)測量(liang)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun):用(yong)(yong)以(yi)檢(jian)驗已(yi)加(jia)工(gong)(gong)表(biao)面(mian)的(de)(de)(de)(de)尺寸及位(wei)(wei)置(zhi)的(de)(de)(de)(de)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)(wei)測量(liang)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。(3)定(ding)(ding)(ding)位(wei)(wei)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun):加(jia)工(gong)(gong)時工(gong)(gong)件(jian)(jian)定(ding)(ding)(ding)位(wei)(wei)所用(yong)(yong)的(de)(de)(de)(de)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，稱(cheng)(cheng)為(wei)(wei)定(ding)(ding)(ding)位(wei)(wei)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。作(zuo)為(wei)(wei)定(ding)(ding)(ding)位(wei)(wei)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)的(de)(de)(de)(de)表(biao)面(mian)(或(huo)線(xian)、點)，在(zai)(zai)道工(gong)(gong)序中只能選擇未加(jia)工(gong)(gong)的(de)(de)(de)(de)毛坯表(biao)面(mian)，合肥(fei)機械加(jia)工(gong)(gong)，這(zhe)種(zhong)定(ding)(ding)(ding)位(wei)(wei)表(biao)面(mian)稱(cheng)(cheng)粗基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。在(zai)(zai)以(yi)后的(de)(de)(de)(de)各個工(gong)(gong)序中就可采用(yong)(yong)已(yi)加(jia)工(gong)(gong)表(biao)面(mian)作(zuo)為(wei)(wei)定(ding)(ding)(ding)位(wei)(wei)基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)，這(zhe)種(zhong)定(ding)(ding)(ding)位(wei)(wei)表(biao)面(mian)稱(cheng)(cheng)精基(ji)(ji)(ji)(ji)準(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)(zhun)。

對(dui)(dui)零件進(jin)行(xing)(xing)這一(yi)工(gong)(gong)(gong)(gong)序呢，精(jing)(jing)密機(ji)械加(jia)工(gong)(gong)(gong)(gong)，一(yi)般通過精(jing)(jing)密車削，研磨等操(cao)作，常(chang)常(chang)能讓那些有(you)色金屬材(cai)料制(zhi)(zhi)作的(de)(de)(de)零件表面形成(cheng)一(yi)定的(de)(de)(de)光(guang)潔表面，比如我(wo)們(men)常(chang)說的(de)(de)(de)鏡面效果(guo)。精(jing)(jing)密零件加(jia)工(gong)(gong)(gong)(gong)其實(shi)是(shi)機(ji)械加(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)一(yi)種(zhong)，但是(shi)因為(wei)(wei)對(dui)(dui)零件的(de)(de)(de)加(jia)工(gong)(gong)(gong)(gong)精(jing)(jing)密度較高(gao)，對(dui)(dui)生產機(ji)械及流程要求也(ye)比較高(gao)。隨著工(gong)(gong)(gong)(gong)業(ye)化(hua)(hua)發展，精(jing)(jing)密機(ji)械加(jia)工(gong)(gong)(gong)(gong)分類越(yue)(yue)(yue)來越(yue)(yue)(yue)多，方向越(yue)(yue)(yue)來越(yue)(yue)(yue)細，越(yue)(yue)(yue)來越(yue)(yue)(yue)化(hua)(hua)。在進(jin)行(xing)(xing)機(ji)械加(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)時候(hou)，機(ji)械加(jia)工(gong)(gong)(gong)(gong)價格表，學會對(dui)(dui)零部(bu)件的(de)(de)(de)精(jing)(jing)度進(jin)行(xing)(xing)控制(zhi)(zhi)是(shi)很有(you)必要的(de)(de)(de)一(yi)件事(shi)情，因為(wei)(wei)只(zhi)有(you)精(jing)(jing)度得(de)到控制(zhi)(zhi)以后，才(cai)能夠(gou)讓加(jia)工(gong)(gong)(gong)(gong)出來的(de)(de)(de)零部(bu)件更能夠(gou)滿足精(jing)(jing)密需求。

精密(mi)零(ling)件加(jia)(jia)(jia)(jia)工其實是(shi)(shi)機械加(jia)(jia)(jia)(jia)工的(de)(de)一種，但是(shi)(shi)因為(wei)對零(ling)件的(de)(de)加(jia)(jia)(jia)(jia)工精密(mi)度(du)較高，對生(sheng)(sheng)產機械及流程要求也比較高。隨著工業化(hua)發(fa)展，精密(mi)機械加(jia)(jia)(jia)(jia)工分類越來(lai)越多(duo)，方向(xiang)越來(lai)越細(xi)，越來(lai)越化(hua)。機械加(jia)(jia)(jia)(jia)工性能不僅和(he)企業的(de)(de)利(li)益相(xiang)(xiang)關，還和(he)安全(quan)性相(xiang)(xiang)關，在(zai)給(gei)企業帶來(lai)經濟效(xiao)益的(de)(de)同時(shi)，還可以有效(xiao)降低安全(quan)事故發(fa)生(sheng)(sheng)的(de)(de)概率(lv)。零(ling)件在(zai)加(jia)(jia)(jia)(jia)工和(he)裝配(pei)過程中所使(shi)用(yong)的(de)(de)基(ji)(ji)準，大型機械加(jia)(jia)(jia)(jia)工，稱為(wei)工藝(yi)基(ji)(ji)準。工藝(yi)基(ji)(ji)準按(an)用(yong)途不同，又分為(wei)定位基(ji)(ji)準、測量基(ji)(ji)準和(he)裝配(pei)基(ji)(ji)準。定位基(ji)(ji)準：天津機械加(jia)(jia)(jia)(jia)工時(shi)使(shi)工件在(zai)機床(chuang)或(huo)夾(jia)具(ju)中占據正確(que)位置所用(yong)的(de)(de)基(ji)(ji)準，稱為(wei)定位基(ji)(ji)準。