1. Point control function: CNC milling machines can perform high-precision hole processing, such as drilling, expanding, dumpling, and tweezers.

2. Continuous contour control function: This control function can achieve continuous contour control of tool motion trajectory through interpolation of straight lines and arcs, enabling it to process planar workpieces composed of two geometric elements: straight lines and arcs. This function continues to be able to machine spatial surfaces.

3. Tool radius compensation function: This function can be programmed based on the dimensions marked on the workpiece pattern, without considering the actual radius size of the tool used. It can reduce complex numerical calculations during the programming process.

4. Tool length compensation function: Its function will automatically compensate for the length of the tool, thereby adapting to the requirements for adjusting the length and size of the tool during processing.

5. Proportional and mirror processing function: The proportional function allows the programmed processing program to be executed by changing the coordinate values proportionally. Mirror machining, also known as axisymmetric machining, if the shape of a part is symmetrical about the coordinate axis, as long as one or two quadrants are programmed, the contours of the other quadrants can be achieved through mirror machining.

6. Rotation function: On the milling machine, this function can execute the programmed machining program by rotating it at any angle within the machining plane.

7. Subprogram call function: Some parts need to repeatedly process the same contour shape at different positions. The machining program of this contour shape is used as a subroutine, and repeated calls are made at the desired position to complete the machining of the part.