● The main machine, which is the main body of the CNC machine tool, includes mechanical parts such as machine body, column, spindle, feed mechanism and so on. It is a mechanical component used to complete various cutting processes. ● CNC device is the core of CNC machine tools, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software, for entering digital part programs, and completing the storage of input information, data conversion, interpolation calculation and realization of various control functions. ●Drive device, which is the driving part of the actuator of CNC machine tools, including spindle drive unit, feed unit, spindle motor and feed motor, etc. It realizes spindle and feed drive by electrical or electro-hydraulic servo system under the control of numerical control devices. When several feeds are linked, the processing of positioning, straight line, plane curve and space curve can be completed. ●Auxiliary devices, some necessary supporting components of index control machine tools, to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip evacuation devices, exchange tables, CNC rotary tables and CNC indexing heads, as well as tools and monitoring and detection devices. ●Programming and other auxiliary equipment, which can be used to program and store parts outside the machine.