CNC machine tools consist of the following parts:

1. Worktable (worktable bed): supports and positions the workpiece and provides the transmission of machining cutting force.

2. Tool holder (tool holder bed): supports and positions the cutting tool so that it can perform machining and cutting operations.

3. Spindle: provides rotational force and speed to drive the tool for cutting.

4. Servo system: The position movement and speed of the spindle, feed axis, etc. are controlled by the servo motor to control the accuracy and stability of the cutting process.

5. Control system: Computer control system used to program, operate and monitor the machining process of CNC machine tools. Including CNC equipment, programs, interfaces and control panels, etc.

6. Sensors and detection devices: used to sense the status of workpieces and machine tools, such as position, speed, force, etc., and feed back to the control system for adjustment.

7. Cooling and lubrication system: provides cooling and lubrication effects, maintains the temperature and lubrication state of machine tools and cutting tools, and extends the service life of machine tools and cutting tools.

8. Safety protection devices: such as machine tool cover doors, light barriers, emergency stop buttons, etc., are used to protect the safety of operators.

These parts work together to enable CNC machine tools to achieve automated processing, improve production efficiency and processing accuracy.