CNC programming is a critical aspect of CNC machining, directly affecting machining efficiency and quality. The basic steps of CNC programming include: first, designing a CAD model based on machining requirements; then, using CAM software to generate tool paths; next, converting the tool paths into CNC code; finally, inputting the CNC code into the CNC machine tool for machining.

In CNC programming, the following points should be noted: first, select tool paths reasonably to reduce machining time and tool wear. Common tool paths include parallel cutting, contour cutting, and spiral cutting. Second, set cutting parameters appropriately, such as cutting speed, feed rate, and depth of cut, to ensure machining quality and tool life. Additionally, consider cooling and lubrication during machining to reduce tool wear and improve surface quality.

Program optimization is also essential in CNC programming. By optimizing the program, idle time can be reduced, and machining efficiency can be improved. Furthermore, errors in the program, such as tool interference and overcutting, should be avoided to ensure machining safety.