1. Parts with high precision requirements. CNC lathes have good rigidity, high manufacturing accuracy, precise tool alignment, and can easily perform size compensation, so they can process parts with high dimensional accuracy requirements.
2. The most suitable for small and medium-sized parts with multiple varieties. With the gradual decrease in manufacturing costs of CNC lathes, the situation of processing large quantities of parts has also emerged both domestically and internationally. When processing small batches and single piece production, it is also possible to shorten the debugging time of the program and the preparation time of the tooling.
3. Parts with complex contour shapes. Any planar curve can be approximated by a straight line or an arc, and CNC lathes have arc interpolation function, which can process various complex contour parts.
4. Parts with low surface roughness values. The surface roughness depends on the cutting speed and feed rate when the material, precision machining allowance, and tool angle of the workpiece and tool are constant. A regular lathe has a constant speed, and the cutting speed varies depending on the diameter. For example, a CNC lathe has a constant linear speed cutting function, and the same linear speed can be used for the end face and different diameter outer circles to ensure that the surface roughness value is small and consistent. When processing surfaces with different surface roughness, selecting a smaller feed rate for surfaces with lower roughness and a larger feed rate for surfaces with higher roughness results in good variability, which is difficult to achieve on ordinary lathes.