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本文介绍了一种ＣＮＣ机床新型免抬式电动刀架的机械结构及控制电路。该电动刀架采用梯形螺柱螺套副升降机构，可使刀架转位分度时无需抬起上刀体。刀架转位分度采用机－ 电结合的方法，即先在控制电路中使用霍尔元件进行粗定位，再在机械上采用三齿盘实现精定位。
This paper introduces a new CNC machine tool lift-free electric turret mechanical structure and control circuit. The electric knife holder adopts trapezoidal stud thread sleeve vice lifting mechanism, which can make the turret indexed without lifting the upper knife body. Knife carrier indexing using machine - the method of combining electricity, that is, first in the control circuit using the Hall element rough positioning, then the use of three-disc mechanical precision positioning.