CNC machine tools can be divided into many types according to different processing methods and process. Common classification methods include the following:

1. According to the processing method:

- Milling machines (including vertical milling machines, horizontal milling machines, gantry milling machines, etc.)

- Drilling machines (including vertical drilling machines, horizontal drilling machines, etc.)

- Lathes (including flat lathes, axial lathes, etc.)

- Grinding machines (such as surface grinders, internal and external cylindrical grinders, etc.)

- High-precision machining machines (such as thread grinders, five-axis machining centers, etc.)

2. According to the type of control system:

- Servo-controlled CNC machine tools

- Spallation Control CNC Machine Tools

- Open CNC machine tools

- Closed-loop CNC machine tools

3. According to structural characteristics:

- Vertical CNC Machine Tools

- Horizontal CNC machine tools

- Gantry CNC machine tools

- Cantilever CNC machine tools

- CNC machine tools integrated into automated production lines

4. According to control accuracy and function:

- Low precision CNC machine tools

- Medium precision CNC machine tools

- High-precision CNC machine tools

- Multifunctional CNC machine tools

These classification methods can be selected and combined according to different needs and application scenarios to meet the requirements of different workpiece processing. It is necessary to select the appropriate CNC machine type and configuration according to specific processing needs and technical requirements.