Live axle tunneling/turning method and device

The present invention provides a live axle turning tunneling method and apparatus are super precision cutting and complex surface cutting art. The workpiece clamping a front end of a spindle ultra-precision CNC lathe, boring to a live axle turning means mounted in said X-axis or Z-axis slide carriage plate, two of the live axle turning means of tunneling live axle driving signal is active control, the synchronization record is formed into the desired free surface turning tool rapid reciprocating motion, and difficult materials to achieve the desired rapid excavation cutting movement of the cutting tool. Advantage of the invention is characterized in having a cutting polyhydric variable parameters to achieve efficient difficult materials to create complex surface quality.