This paper applies the remanufacture for a 5- axes Numerical Control Machine as an actual example, which carries out the motion of the spindle sleeve by PLC.

• 以1台可伸缩铣头5坐标机床技术改造为实例，采用PLC实现主轴套筒的移动，解决5坐标加工中遇到的“转动中心距”问题。