（1）點位控制功(gong)能：數控銑床的點位控制主要用(yong)于工(gong)件的孔(kong)(kong)加(jia)工(gong)，如中心鉆定(ding)位、鉆孔(kong)(kong)、擴孔(kong)(kong)、锪孔(kong)(kong)、鉸孔(kong)(kong)和鏜孔(kong)(kong)等(deng)各(ge)種(zhong)孔(kong)(kong)加(jia)工(gong)操作。

（2）連續控制(zhi)功能：通過(guo)數控銑床的(de)直線插(cha)(cha)補(bu)、圓弧(hu)插(cha)(cha)補(bu)或(huo)復雜的(de)曲線插(cha)(cha)補(bu)運動(dong)，銑削加工(gong)工(gong)件的(de)平(ping)面和曲面。

（3）刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)補(bu)償(chang)(chang)(chang)功能：如果直接按工(gong)(gong)(gong)件(jian)(jian)輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)線編程，在加(jia)(jia)(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)件(jian)(jian)內(nei)輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)時，實際輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)線將(jiang)大了(le)一(yi)個刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)值(zhi)；在加(jia)(jia)(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)件(jian)(jian)外輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)時，實際輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)線又小(xiao)了(le)一(yi)個刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)值(zhi)。使用刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)補(bu)償(chang)(chang)(chang)的方法，數控系統自(zi)動計(ji)算刀具(ju)(ju)(ju)(ju)中心軌跡，使刀具(ju)(ju)(ju)(ju)中心偏離工(gong)(gong)(gong)件(jian)(jian)輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)一(yi)個刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)值(zhi)，從(cong)而加(jia)(jia)(jia)工(gong)(gong)(gong)出符合圖紙要求(qiu)的輪(lun)(lun)廓(kuo)(kuo)(kuo)(kuo)。利用刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)補(bu)償(chang)(chang)(chang)的功能，改變刀具(ju)(ju)(ju)(ju)半(ban)(ban)徑(jing)(jing)補(bu)償(chang)(chang)(chang)量，還可以補(bu)償(chang)(chang)(chang)刀具(ju)(ju)(ju)(ju)磨損(sun)量和(he)加(jia)(jia)(jia)工(gong)(gong)(gong)誤差，實現(xian)對工(gong)(gong)(gong)件(jian)(jian)的粗加(jia)(jia)(jia)工(gong)(gong)(gong)和(he)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)。

（4）刀(dao)(dao)具(ju)長度(du)(du)補(bu)償(chang)功能：改變(bian)(bian)刀(dao)(dao)具(ju)長度(du)(du)的(de)補(bu)償(chang)量，可(ke)以(yi)補(bu)償(chang)刀(dao)(dao)具(ju)換刀(dao)(dao)后(hou)的(de)長度(du)(du)偏差值(zhi)，還(huan)可(ke)以(yi)改變(bian)(bian)切削加工(gong)的(de)平面位置(zhi)，控制(zhi)刀(dao)(dao)具(ju)的(de)軸(zhou)向定位精度(du)(du)。

（5）固定(ding)循環加(jia)工(gong)功能(neng)：應用固定(ding)循環加(jia)工(gong)指令，可以簡化加(jia)工(gong)程(cheng)序(xu)，減少編程(cheng)的工(gong)作量(liang)。

（6）子(zi)程(cheng)(cheng)序(xu)(xu)功能(neng)：如果加工(gong)工(gong)件形狀相同或(huo)相似部分，把其(qi)編(bian)寫(xie)成子(zi)程(cheng)(cheng)序(xu)(xu)，由主程(cheng)(cheng)序(xu)(xu)調用，這樣(yang)簡(jian)化(hua)程(cheng)(cheng)序(xu)(xu)結構。引用子(zi)程(cheng)(cheng)序(xu)(xu)的功能(neng)使加工(gong)程(cheng)(cheng)序(xu)(xu)模塊(kuai)化(hua)，按加工(gong)過程(cheng)(cheng)的工(gong)序(xu)(xu)分成若干個模塊(kuai)，分別編(bian)寫(xie)成子(zi)程(cheng)(cheng)序(xu)(xu)，由主程(cheng)(cheng)序(xu)(xu)調用，完成對工(gong)件的加工(gong)。這種模塊(kuai)式的程(cheng)(cheng)序(xu)(xu)便于(yu)加工(gong)調試(shi)，優化(hua)加工(gong)工(gong)藝(yi)。