人们不得不采用数字逻辑电路“搭”成一台机床专用计算机实作为数控系统，被成为硬件连接数控，简称未数控(NC)。
People have to use the digital logic circuit "build" into a special computer numerical control machine tool real as a system, the hardware connecting numerical control, or not numerical control (NC).
实践证明，在应用PLC进行技术改造后，该控制系统的硬件电路得到了简化，工作更加可靠，提高了机床工作效率。
Practice has proved that the hardware circuit of this control system has been simplified, the work is more valuable, and the working efficiency is so improved after PLC technological transformation.
机床电力拖动系统采用集成电路实现脉宽调制方式调速用IGBT管驱动电动机。
This article presents the application of IGBT-PWM regulating speed system in machine tool's electric drive.
控制系统部分包括步进电机控制电路和脉冲电源电路，这是数控电火花加工机床的重点设计部分，也是难点。
The controlling system part contains the circuit of step-by-step electromotor control and the circuit of pulse electrical source.
该电路制做简单，可靠性高，易于在机床上安装，显示直观，为磨床砂轮的平衡调整提供了可信赖的参考依据。
It has a higher reliability. Its installation on the grinder. is easy too. Indication is Visualized. It provides reliablereference basis for emery wheel balance adjustment of grinder.
该电路制做简单，可靠性高，易于在机床上安装，显示直观，为磨床砂轮的平衡调整提供了可信赖的参考依据。
It has a higher reliability. Its installation on the grinder. is easy too. Indication is Visualized. It provides reliablereference basis for emery wheel balance adjustment of grinder.
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