一種(zhong)是：車刀固定，主要是針對加工旋轉中(zhong)未(wei)成形的(de)工件；

第(di)二種是：工(gong)(gong)(gong)(gong)件(jian)固定，通過工(gong)(gong)(gong)(gong)件(jian)的高速旋(xuan)轉，車刀的橫縱向移(yi)動進行精度加工(gong)(gong)(gong)(gong)。在車床上還(huan)可用(yong)鉆頭、擴(kuo)孔鉆、鉸刀、絲錐(zhui)、板牙和(he)滾花工(gong)(gong)(gong)(gong)具(ju)等進行相應的加工(gong)(gong)(gong)(gong)。車床主要用(yong)于加工(gong)(gong)(gong)(gong)軸、盤、套和(he)其他具(ju)有回(hui)轉表面的工(gong)(gong)(gong)(gong)件(jian)，是機械制造和(he)修(xiu)配(pei)工(gong)(gong)(gong)(gong)廠(chang)中使用(yong)廣的一類機床加工(gong)(gong)(gong)(gong)。

數(shu)控加工之所以應有的范(fan)圍很廣，因為相(xiang)對于普(pu)通(tong)車床(chuang)加工來說具有很大的優勢：

1、數控車床的(de)加工精(jing)度(du)高，穩定性高，所(suo)以能夠保(bao)證加工的(de)高質(zhi)量(liang)；

2、自動化程度高，數控加(jia)工(gong)是通過程序譯碼執行的，很大程度地減少了人工(gong)的重復工(gong)作強度；

3、數控(kong)車床加工零件改變時，只需(xu)要更(geng)改數控(kong)程序即可，這(zhe)樣大大地減少了生產準備時間；

4、可進行多(duo)坐標(biao)的聯動，能夠加工(gong)形狀復雜的零件(jian)；

5、數控車(che)床對于操(cao)作(zuo)人(ren)員(yuan)的素質要求也是較高的。