The primary motion of YK58200 CNC Rack Gear Shaping Machine is driven by an AC servomotor and controlled by a frequency conversion. The machine is governed by servo, CNC system, and it is four axes.The machine holds rotary knife rest and drivers.It can realize the process of screw rack from -30 to +30. Its CNC system adopts PC bus.The host computer is supported by a 32-bit CPU.Cutter parameters input under the guidance of menu of options and Chinese character prompting lines .On-line display of the workpiece-cutter generating process.On-line display of diagrams necessary