Woodworking machinery generally use 3 - 5 axis CNC system, CNC system according to the requirements of the processing parts, planning steps, respectively, to the axis of motion. The axis of the servo motor according to the instruction driven ball screw rod back and forth in the guide rail with high precision, left and right, moving up and down, the axial movement of the comprehensive transfer to electric spindle tool (or processing), thus completing the processing of a variety of tasks.