文章以MG1312外圆磨床为研究对象,采用日本三菱数控系统,及台湾银泰滚珠丝杠对磨床径向横进给(X轴)及轴向工作台(Z轴)进行了数控化改造;采用PLC通讯控制变频器的方案实现了对砂轮主轴旋转速度的控制;并且对工件主轴、冷却泵的原控制方案进行了改进。实际使用情况表明,改造后大大简化了机床操作,提高了机床的定位精度,并使机床具有了良好的工作性能。 In this paper, MG1312 cylindrical grinding machine is taken as the research object, the numerical control transformation is carried out on the radial infeed (X-axis) and axial workbench (Z-axis) of the grinder by adopting the Mitsubishi CNC system and Taiwan Yintai ball screw. Communication control inverter program to achieve the wheel spindle speed control; and the workpiece spindle, cooling pump of the original control program has been improved. The actual use of the situation shows that after the transformation greatly simplifies the operation of the machine to improve the positioning accuracy of the machine and make the machine has a good working performance.