2. Parts with high precision requirements. Due to the good rigidity of the CNC machine tool, the CNC machining and manufacturing accuracy is high, the tool setting is accurate, and the size compensation can be easily performed, so it can process parts with high dimensional accuracy.

3. Parts with small surface roughness values. When the material of the workpiece and the tool, the finishing allowance and the tool angle are certain, the surface roughness depends on the cutting speed and feed rate. The ordinary CNC machine tool has a constant speed, and the cutting speed is different for different diameters. For example, the CNC machining has a constant linear speed cutting function. The same linear speed can be used for the end face and the outer circle of different diameters to ensure that the surface roughness value is small and consistent. . When processing surfaces with different surface roughness, choose a small feed rate for a surface with a small roughness, and a larger feed rate for a surface with a larger roughness. The variability is very good, which is difficult to achieve on ordinary machine tools.
4. Parts with complex contour shapes. Any plane curve can be approximated by a straight line or a circular arc. CNC machining has circular interpolation functions, and can be used for CNC machining of parts with complex contours.