零(ling)件(jian)加(jia)(jia)工(gong)(gong)表面上，不(bu)應有(you)(you)劃痕、擦傷(shang)等損傷(shang)零(ling)件(jian)表面的(de)(de)缺陷，機械加(jia)(jia)工(gong)(gong)廠(chang)家，加(jia)(jia)工(gong)(gong)的(de)(de)螺(luo)紋(wen)表面不(bu)允(yun)許有(you)(you)黑皮、磕碰、亂扣和毛刺等缺陷。 所(suo)有(you)(you)需要進(jin)行涂(tu)裝的(de)(de)鋼鐵(tie)制件(jian)表面在涂(tu)漆(qi)前，必(bi)須將鐵(tie)銹、氧(yang)化皮、油脂、灰塵、泥土、鹽和污物等除去。零(ling)件(jian)在加(jia)(jia)工(gong)(gong)和裝配(pei)過程(cheng)中所(suo)使用(yong)的(de)(de)基(ji)(ji)(ji)(ji)(ji)準(zhun)，稱(cheng)為工(gong)(gong)藝基(ji)(ji)(ji)(ji)(ji)準(zhun)。工(gong)(gong)藝基(ji)(ji)(ji)(ji)(ji)準(zhun)按用(yong)途不(bu)同，又分為定(ding)(ding)位基(ji)(ji)(ji)(ji)(ji)準(zhun)、測量(liang)基(ji)(ji)(ji)(ji)(ji)準(zhun)和裝配(pei)基(ji)(ji)(ji)(ji)(ji)準(zhun)。定(ding)(ding)位基(ji)(ji)(ji)(ji)(ji)準(zhun)：天津機械加(jia)(jia)工(gong)(gong)時使工(gong)(gong)件(jian)在機床或夾具中占(zhan)據正確位置(zhi)所(suo)用(yong)的(de)(de)基(ji)(ji)(ji)(ji)(ji)準(zhun)，稱(cheng)為定(ding)(ding)位基(ji)(ji)(ji)(ji)(ji)準(zhun)。為提(ti)高工(gong)(gong)件(jian)質(zhi)量(liang)和延長(chang)使用(yong)壽(shou)命，需去除所(suo)有(you)(you)金(jin)(jin)屬精密件(jian)上的(de)(de)毛刺。工(gong)(gong)件(jian)表面、銳角和棱邊(bian)必(bi)須達到極高的(de)(de)金(jin)(jin)屬潔凈(jing)度(du)，必(bi)要時，滁州機械加(jia)(jia)工(gong)(gong)，必(bi)須適用(yong)于(yu)非電(dian)(dian)鍍和電(dian)(dian)鍍金(jin)(jin)屬。

工(gong)(gong)(gong)(gong)序(xu)是組成機(ji)械(xie)加工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)的(de)(de)(de)基本(ben)單元。所(suo)謂(wei)工(gong)(gong)(gong)(gong)序(xu)是指一(yi)個(ge)(ge)(ge)（或一(yi)組）工(gong)(gong)(gong)(gong)人，在(zai)一(yi)臺機(ji)床上(或一(yi)個(ge)(ge)(ge)工(gong)(gong)(gong)(gong)作(zuo)地(di)點），大型機(ji)械(xie)加工(gong)(gong)(gong)(gong)，對(dui)同一(yi)工(gong)(gong)(gong)(gong)件(jian)（或同時(shi)對(dui)幾個(ge)(ge)(ge)工(gong)(gong)(gong)(gong)件(jian)）所(suo)連續(xu)完成的(de)(de)(de)那一(yi)部分工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)。機(ji)械(xie)加工(gong)(gong)(gong)(gong)廠工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)又可分為鑄造、鍛造、沖壓、焊接、機(ji)械(xie)加工(gong)(gong)(gong)(gong)、裝(zhuang)配等工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)，大型機(ji)械(xie)加工(gong)(gong)(gong)(gong)廠，機(ji)械(xie)制造工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)一(yi)般是指零件(jian)的(de)(de)(de)機(ji)械(xie)加工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)和(he)機(ji)器的(de)(de)(de)裝(zhuang)配工(gong)(gong)(gong)(gong)藝(yi)過(guo)程(cheng)(cheng)(cheng)的(de)(de)(de)總和(he)，其他過(guo)程(cheng)(cheng)(cheng)則稱為輔助過(guo)程(cheng)(cheng)(cheng)，例如運輸、保管、動力供應、設備維修等。機(ji)械(xie)加工(gong)(gong)(gong)(gong)中的(de)(de)(de)設計基準(zhun)和(he)工(gong)(gong)(gong)(gong)藝(yi)基準(zhun)是不一(yi)樣(yang)的(de)(de)(de)。設計基準(zhun)，其是指在(zai)零件(jian)圖上用來確定(ding)其它點、線和(he)面(mian)位置的(de)(de)(de)基準(zhun)。

機(ji)械(xie)(xie)(xie)零(ling)件(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)變形(xing)的(de)(de)改進措施：在(zai)實際的(de)(de)機(ji)械(xie)(xie)(xie)零(ling)件(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)中，導致零(ling)件(jian)(jian)變形(xing)的(de)(de)因素(su)很多。為(wei)了(le)從(cong)根本上(shang)解決這(zhe)些變形(xing)問(wen)題，操作人員需要在(zai)實際工(gong)(gong)(gong)(gong)(gong)(gong)作中認(ren)真探索(suo)這(zhe)些因素(su)，并結合工(gong)(gong)(gong)(gong)(gong)(gong)作精要，制定改進措施。機(ji)械(xie)(xie)(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)是(shi)(shi)一種用加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)機(ji)械(xie)(xie)(xie)對(dui)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)的(de)(de)外形(xing)尺(chi)寸或性能進行(xing)改變的(de)(de)過程(cheng)。按(an)被加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)的(de)(de)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)處于的(de)(de)溫度狀(zhuang)態﹐分為(wei)冷加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)和(he)熱加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)。機(ji)械(xie)(xie)(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)是(shi)(shi)通過機(ji)械(xie)(xie)(xie)設備對(dui)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)的(de)(de)外形(xing)尺(chi)寸或性能進行(xing)改變的(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)過程(cheng)，機(ji)械(xie)(xie)(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)對(dui)現代工(gong)(gong)(gong)(gong)(gong)(gong)業生(sheng)產(chan)起(qi)到了(le)非常重要的(de)(de)作用。