Host, which is the theme of CNC machine tools, including machine tool body, column, spindle, feed mechanism and other mechanical parts. It is a mechanical part used to complete various cutting processes.

NC device is the core of NC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software. It is used to input digital part program, complete input information storage, data transformation, interpolation operation and realize various control functions.

Driving device, which is the driving part of the actuator of NC machine tool, including spindle driving unit, feed unit, spindle motor and feed motor. He realizes spindle and feed drive through electrical or electro-hydraulic servo system under the control of NC device. When several feeds are linked, the machining of positioning, straight line, plane curve and space curve can be completed.

Auxiliary device, some necessary supporting parts of index control machine tool, to ensure the operation of NC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip removal devices, exchange worktables, CNC turntables and CNC indexing heads, as well as cutting tools and monitoring and detection devices.

Programming and other auxiliary equipment can be used to program and store parts outside the machine.