To improve the machining accuracy of CNC lathes, the following measures can be taken:

1. Choose high-precision CNC lathes: In order to obtain high-precision processing results with CNC lathes, you first need to choose CNC lathe equipment with good stability and high precision.

2. Optimize tool selection: Choosing the right tool for CNC lathes is crucial to machining accuracy. High-quality cutting tools have good rigidity and wear resistance and can better maintain processing accuracy.

3. Precise clamping and positioning: The clamping and positioning of the workpiece on the CNC lathe must be very precise to ensure that the position of the workpiece is stable during the processing.

4. Accurate processing parameter settings: The settings of CNC lathe cutting speed, feed speed, cutting depth and other processing parameters must be reasonable and accurate to ensure a stable cutting process, avoid vibration and deformation, and thereby improve processing accuracy.

5. Regular maintenance and upkeep: Perform regular maintenance and upkeep on CNC lathes to keep the equipment in good condition. Pay special attention to the lubrication and adjustment of machine tools to ensure the stability and accuracy of machine tool operation.

6. Correction before and after processing: Before and after CNC lathe processing, the machine tool can be inspected and corrected through correction tools to ensure that the processing accuracy meets the requirements.

7. Monitoring and adjustment during processing: During the processing of CNC lathes, it is necessary to constantly monitor the processing quality and processing accuracy, find problems in time and make adjustments and corrections.

8. Processing temperature and environment control: Controlling the temperature and environment during CNC lathe processing, especially during high-speed and high-precision processing, can reduce the impact of temperature changes and environmental factors on processing accuracy.

Through the above measures, the accuracy of CNC lathe processing can be effectively improved to ensure high-quality and high-quality processing.