The control principle of step motor is exposed, drive control of feed system is carried out by use of motion controller, meanwhile, dot motion control of step motor is also carried out by use of PLC.

阐述了步进电机控制原理，利用运动控制器实现了进给系统的联动控制，利用PLC实现了步进电机的点动控制。

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The multi-location horizontal numerical control driller is designed. The machine tool is rotary collocated and processing technic scheme adopts step by step feed.

设计了一种数控卧式多工位深小孔钻床。机床采用卧式回转布置方案和分级进给加工工艺方法；

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