數(shu)(shu)控(kong)加(jia)工(gong)(gong)工(gong)(gong)藝(yi)(yi)的(de)內容(rong)十分具體，工(gong)(gong)藝(yi)(yi)設計(ji)相當嚴密。在(zai)普(pu)通機床加(jia)工(gong)(gong)時(shi)，許多(duo)具體的(de)工(gong)(gong)藝(yi)(yi)問(wen)題如：工(gong)(gong)藝(yi)(yi)中各(ge)工(gong)(gong)步的(de)劃分與安排，刀縣的(de)幾何形狀(zhuang)，刀路線，切(qie)削用量選擇等，數(shu)(shu)控(kong)加(jia)工(gong)(gong)中心，很(hen)大(da)程度上都是(shi)由工(gong)(gong)人根據自己的(de)實踐經驗和習(xi)慣自行考慮和決(jue)定的(de)，六安數(shu)(shu)控(kong)加(jia)工(gong)(gong)，一般無須(xu)工(gong)(gong)藝(yi)(yi)人員在(zai)設計(ji)工(gong)(gong)藝(yi)(yi)規(gui)程時(shi)進行過(guo)多(duo)的(de)規(gui)定。而在(zai)數(shu)(shu)控(kong)加(jia)工(gong)(gong)時(shi)，上述(shu)這(zhe)些(xie)具體工(gong)(gong)藝(yi)(yi)問(wen)題，不僅成(cheng)為數(shu)(shu)空(kong)工(gong)(gong)藝(yi)(yi)設計(ji)時(shi)必(bi)須(xu)認(ren)真考慮的(de)內容(rong)，而且還必(bi)須(xu)作出正確(que)的(de)選擇并編(bian)入(ru)加(jia)工(gong)(gong)程序中。

一個完善的(de)(de)(de)后(hou)置處理器(qi)(qi)(qi)應具(ju)備以(yi)下功(gong)(gong)能(neng)：用(yong)戶只需要(yao)具(ju)有(you)機床(chuang)操作知識和NC編(bian)程(cheng)知識，就能(neng)編(bian)出(chu)滿(man)意的(de)(de)(de)后(hou)置處理器(qi)(qi)(qi)。當(dang)所提供的(de)(de)(de)數據庫不能(neng)滿(man)足(zu)用(yong)戶的(de)(de)(de)要(yao)求時，它提供的(de)(de)(de)開(kai)發(fa)器(qi)(qi)(qi)允許用(yong)戶進(jin)行修改和編(bian)譯。因(yin)此可以(yi)按(an)照(zhao)數控(kong)機床(chuang)的(de)(de)(de)功(gong)(gong)能(neng)建立(li)一個關系數據庫，每個功(gong)(gong)能(neng)如何實現，數控(kong)加工價格，由用(yong)戶根據機床(chuang)的(de)(de)(de)結構、使用(yong)的(de)(de)(de)數控(kong)系統指1定控(kong)制(zhi)的(de)(de)(de)代碼及代碼結構。

例如，cnc數(shu)控加(jia)(jia)工(gong)(gong)(gong)中(zhong)心(xin)，軸類零件(jian)加(jia)(jia)工(gong)(gong)(gong)時，通常先(xian)加(jia)(jia)工(gong)(gong)(gong)中(zhong)心(xin)孔(kong)(kong)，再以(yi)中(zhong)心(xin)孔(kong)(kong)為精基(ji)準(zhun)加(jia)(jia)工(gong)(gong)(gong)外園(yuan)表面(mian)(mian)和(he)端(duan)面(mian)(mian)。cnc數(shu)控加(jia)(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)序(xu)的(de)安排：先(xian)主(zhu)后次原(yuan)則：應先(xian)加(jia)(jia)工(gong)(gong)(gong)零件(jian)的(de)主(zhu)要工(gong)(gong)(gong)作表面(mian)(mian)、裝配基(ji)面(mian)(mian)，從而及早(zao)發(fa)現(xian)毛坯中(zhong)主(zhu)要表面(mian)(mian)可(ke)能出現(xian)代缺陷。次要表面(mian)(mian)可(ke)穿插進行(xing)，放在主(zhu)要加(jia)(jia)工(gong)(gong)(gong)表面(mian)(mian)加(jia)(jia)工(gong)(gong)(gong)到一定(ding)程度(du)后、終精加(jia)(jia)工(gong)(gong)(gong)之前進行(xing)。先(xian)面(mian)(mian)后孔(kong)(kong)原(yuan)則：箱(xiang)體、支架(jia)類零件(jian)的(de)平面(mian)(mian)輪(lun)廓(kuo)尺寸(cun)較大，一般(ban)先(xian)加(jia)(jia)工(gong)(gong)(gong)平面(mian)(mian)，再加(jia)(jia)工(gong)(gong)(gong)孔(kong)(kong)和(he)其(qi)他尺寸(cun)。