針對傳統機床直線進給系統在某些場合下存在體積大、安裝調試難度高、系統動態性不好的問題，提出了用種新型步進電機控制直線運動的方法.該電機的特點是電機軸中空，絲杠可以直接穿過電機抽;在該電機控制的直線運動系件，絲杠一般不動，電機在絲杠上平動，從而使運動系統具有安裝調試方便、體積小、動態響應特性好等特點.
夫健詞:步進電機;直線運動;數控機床

(MechanicalE ngineeringD ept.CQU.Chongging.China4 000303
AbstraminS omec ase,t raditionaln umericalco ntorlm achineto olis o fh ugeb ulk,unconvenientfix 噸,lowd ynamic response,so we work out a new method of linear movement controlled by a new kind of step motor.The main character of the motor is that it has a hollow axis through which a screw can thread.In the movement system controlledb yth em otorlthe s crewi su suallyf ixed,andth em otorco uldm oves traighton th es cerw.Thesy stemh asth e advantageo fco nvenientfi xing,smallbu lc,andh ighd ynamicre sponse.
Keywords:stepm otor;linearm ovement;numericalco ntrolm achineto ol