The quality of the machining surface finish is related to the material material, the choice of the tool, the sharpness of the blade, the mechanical rigidity of the machine tool (whether the machine tool jitter during the processing), the matching of the parameters of the drive and the control system (including the stepper drive and the servo drive), the parameter tuning of the control system, etc., in order to process a good effect is closely related to each factor. It is possible to solve such problems by identifying the contributing factors in the specific situation.