Due to the different CNC systems configured for CNC milling machines, there are certain differences in the definition and functionality of the commands used, but their basic functions and programming methods are still the same.

The main functions of CNC milling machines

1) The point control function of CNC milling machines is mainly used for hole processing of workpieces, such as center drilling positioning, drilling, expanding, spot facing, reaming, and boring, and other hole processing operations.

2) The continuous control function milling the plane and surface of the workpiece through linear interpolation, circular interpolation, or complex curve interpolation movements of CNC milling machines. Processing center

3) If the tool radius compensation function is directly programmed according to the contour line of the workpiece, the actual contour line will increase by one tool radius value when machining the inner contour of the workpiece; When processing the outer contour of the workpiece, the actual contour line is reduced by another tool radius value. By using the method of tool radius compensation, the CNC system automatically calculates the tool center trajectory, causing the tool center to deviate by one tool radius value from the workpiece contour, thereby producing a contour that meets the requirements of the drawing. By utilizing the function of tool radius compensation, the amount of tool radius compensation can be changed, and tool wear and machining errors can also be compensated, achieving rough and precision machining of the workpiece.

4) The tool length compensation function changes the compensation amount of the tool length, which can compensate for the length deviation value of the tool after changing the tool. It can also change the plane position of the cutting process and control the axial positioning accuracy of the tool. Processing center

5) The fixed cycle machining function applies fixed cycle machining instructions, which can simplify machining programs and reduce programming workload. 6) If the subprogram function processes parts with the same or similar shape of the workpiece, it is written as a subprogram and called by the main program to simplify the program structure. The function of referencing subroutines modularizes the machining program, dividing it into several modules according to the processing steps, and writing them into subroutines, which are called by the main program to complete the machining of the workpiece. This modular program is easy to debug and optimize the processing technology.

7) Special functions are configured on CNC milling machines with profiling software and profiling devices. Sensors are used to scan and collect data from the physical object, and after data processing, NC programs are automatically generated to achieve profiling of the workpiece and reverse machining engineering. In short, the configuration of certain software and hardware in the machining center can expand the usage functions of CNC milling machines.