To make the accuracy of CNC vertical lathe more accurate, the following aspects of operation and adjustment can be considered:

1. Tool selection and tool wear monitoring: choose the right tool and make sure the tool is of good quality. The geometry and size of the tool have an important influence on the machining accuracy. At the same time, regularly check and replace worn tools to maintain machining accuracy.
2. Workpiece clamping and positioning: ensure the stability and correctness of the workpiece clamping device to ensure that the position of the workpiece is stable during processing. Avoid the impact of workpiece displacement or deformation on machining accuracy. Use suitable fixtures to ensure the accuracy of the position and orientation of the workpiece during machining.
3. NC program writing and calibration: optimize the NC program writing to ensure accurate tool path and cutting parameters. Carry out pre-commissioning and calibration of NC programming according to the actual situation to ensure that the written program is consistent with the actual machine tool movement.
4. CNC system parameter setting: Calibrate the parameters of the CNC system, including servo amplifier gain, following error compensation, acceleration and deceleration settings, etc. Adjusting these parameters can optimize the motion accuracy and speed performance of CNC vertical lathe.
5. Guide rail and slider adjustment: Regularly check the condition of the guide rail and the wear of the slider, and make necessary adjustments and lubrication. Make sure that the fit gap between the guide rail and the slider is within the allowable range to maintain the running accuracy of the machine tool.
6. Hydraulic and lubricating system maintenance: Regularly check the working status of the hydraulic and lubricating system, including the cleanliness and oil level of the hydraulic oil, the addition and replacement of lubricating grease or lubricating oil in the lubricating system, etc. A good hydraulic and lubrication system can maintain the dynamic accuracy of the machine tool and reduce wear.
7. Stability of the base and basic structure: Check the stability of the base and basic structure of the CNC vertical lathe to ensure the rigidity and vibration resistance of the machine tool. Because the stability of the base and basic structure is directly related to the accuracy and stability of the machine tool.
8. Regular maintenance: Carry out regular machine tool maintenance and maintenance according to the maintenance plan and schedule provided by the manufacturer. Including cleaning and maintenance of the lubrication system, cleaning and lubrication of guide rails, inspection and tightening of screws, etc. Regular maintenance improves the long-term accuracy and reliability of your machine tool.

It should be pointed out that each CNC vertical lathe may have some specific adjustment requirements and operating skills. It is recommended to refer to the operation manual and technical guidance provided by the manufacturer to ensure correct adjustment and operation. In addition, professional technical support or the supplier's technical team can also provide advice on practical commissioning and optimization.