在工(gong)(gong)程實踐中，當遇到相(xiang)似加(jia)(jia)工(gong)(gong)對(dui)象的相(xiang)似加(jia)(jia)工(gong)(gong)需(xu)求時，常(chang)常(chang)可以用(yong)已有(you)的行(xing)(xing)之有(you)效的NC加(jia)(jia)工(gong)(gong)程序進行(xing)(xing)修改后(hou)使用(yong)。然(ran)而如何(he)確保修改結果的正(zheng)確性(xing)則是個問題，不能都放到機床上去(qu)調試，數控cnc加(jia)(jia)工(gong)(gong)中心(xin)，這(zhe)在單件加(jia)(jia)工(gong)(gong)時尤為重要。此外(wai)，合肥數控加(jia)(jia)工(gong)(gong)，現(xian)有(you)的許多CAD/CAM系統的加(jia)(jia)工(gong)(gong)仿1真(zhen)只是以所生(sheng)成的刀具路徑文件為基礎進行(xing)(xing)加(jia)(jia)工(gong)(gong)仿1真(zhen)和干涉檢查，這(zhe)顯然(ran)是不夠的。

一個(ge)完善的后(hou)(hou)置處理器應具(ju)備(bei)以下(xia)功(gong)能(neng)：用(yong)戶(hu)只需要(yao)(yao)具(ju)有(you)機(ji)(ji)床(chuang)操(cao)作知識和(he)NC編程知識，就(jiu)能(neng)編出滿(man)意的后(hou)(hou)置處理器。當所提供的數(shu)據(ju)庫不能(neng)滿(man)足用(yong)戶(hu)的要(yao)(yao)求時，精(jing)密數(shu)控(kong)(kong)車床(chuang)加工，它提供的開發器允許(xu)用(yong)戶(hu)進行(xing)修改和(he)編譯。因此可(ke)以按(an)照(zhao)數(shu)控(kong)(kong)機(ji)(ji)床(chuang)的功(gong)能(neng)建(jian)立(li)一個(ge)關系數(shu)據(ju)庫，每(mei)個(ge)功(gong)能(neng)如(ru)何實(shi)現，由用(yong)戶(hu)根據(ju)機(ji)(ji)床(chuang)的結(jie)構、使用(yong)的數(shu)控(kong)(kong)系統(tong)指1定控(kong)(kong)制的代(dai)碼及(ji)代(dai)碼結(jie)構。

數(shu)(shu)控加(jia)工(gong)(gong)(gong)后置處(chu)(chu)理技術：目前，cnc數(shu)(shu)控加(jia)工(gong)(gong)(gong)中(zhong)心，從(cong)技術上講，由于(yu)CAD/CAM系(xi)統(tong)硬(ying)件和軟件的(de)發(fa)展，對加(jia)工(gong)(gong)(gong)對象、加(jia)工(gong)(gong)(gong)系(xi)統(tong)建(jian)立三維模型、運用圖形交互的(de)方(fang)法實(shi)現刀具路(lu)徑(jing)的(de)生成(cheng)、加(jia)工(gong)(gong)(gong)過(guo)程仿1真(zhen)和干涉碰撞(zhuang)檢(jian)查已經(jing)是可行的(de)。北京市機(ji)電研究院(yuan)在(zai)工(gong)(gong)(gong)程實(shi)踐(jian)中(zhong)已付諸實(shi)施，并取(qu)得了良好效(xiao)果。而要使(shi)生成(cheng)的(de)刀具路(lu)徑(jing)文(wen)件轉換成(cheng)數(shu)(shu)控NC程序，驅動(dong)和控制機(ji)床(chuang)實(shi)施加(jia)工(gong)(gong)(gong)，還必須以相(xiang)應的(de)后置處(chu)(chu)理器開發(fa)為條件。