The control method of CNC lathes has an important impact on machining accuracy. The following are some main aspects:

1. Control system accuracy: The control system of the CNC lathe is the core, and the accuracy of the control system directly affects the processing accuracy. The high-precision control system can more accurately control the position, speed and processing parameters of the tool to ensure that the workpiece processing meets the design requirements.

2. Servo system performance: The servo system of a CNC lathe is responsible for controlling the movement of each axis, including the spindle, feed axis, etc. The performance of the servo system, such as response speed and stability, will directly affect the dynamic accuracy and contour accuracy of processing.

3. Screw transmission and guide rail accuracy: CNC lathe screw transmission and guide rail are key components of CNC lathes, and their accuracy will directly affect the movement accuracy of the tool. High-precision screws and guide rails can reduce transmission errors and improve processing positioning accuracy.

4. Tool wear compensation: CNC lathes usually have a tool wear compensation function, which can monitor tool wear in real time and compensate for it during the machining process. This increases tool life and maintains more consistent machining accuracy.

5. Temperature compensation: CNC lathes will be affected by temperature during work, especially when it comes to thermal expansion and contraction of metal. Some advanced CNC systems will have temperature compensation functions to reduce the impact of temperature changes on machining accuracy.

6. Tool selection and tool path planning: Appropriate tool selection and path planning for CNC lathes are also factors that affect machining accuracy. The quality and geometry of different cutting tools, as well as the rationality of path planning, will directly affect the accuracy of the final machining result.

Taken together, the impact of CNC lathe control methods on machining accuracy is a comprehensive systemic issue that requires comprehensive consideration and optimization in the control system, transmission system, compensation mechanism and other aspects.