If there is an imbalance in the operation of the CNC vertical lathe, it will cause the vibration of the machine tool to increase, which will affect the cutting quality and the life of the machine tool. In order to control the balance, the following measures can be taken:

1. Selecting a balanced tool: When performing CNC vertical lathe processing, it is the key to choose a tool with better balance performance. Manufacturers of knives often dynamically balance them to reduce the effects of imbalance. Choosing a balanced tool can reduce vibration and noise, and improve processing efficiency and quality.
2. Check and correct knives: regularly check and correct knives in use, especially when replacing new knives or reusing knives. The tool may be unbalanced due to damage or wear during use, and timely inspection and correction can ensure the balance of the tool.
3. Adjust the installation position of the tool: Adjusting the installation position of the tool can change the centrifugal force distribution during the cutting process, thereby adjusting the balance of the machine tool. Through trial cutting, vibration test and other methods, judge the unbalanced position, and then reinstall or adjust the position of the tool.
4. Dynamic balance adjustment: For the machine tool itself, dynamic balance adjustment can be performed. Use professional balancing equipment to test and adjust the dynamic balance of the machine tool spindle to reduce vibration and improve balance performance.
5. Regular maintenance and maintenance: Regular maintenance and maintenance of the machine tool, including checking the transmission system, fasteners and lubrication system, etc., to ensure its normal operation and balance performance. Deal with abnormal situations and failures in time to prevent imbalance problems.

It should be noted that for machine tools involving high-speed rotation, such as CNC vertical lathes, safety must be ensured during the adjustment and control of the balance to avoid accidents caused by incorrect operations. It is recommended to follow the corresponding safety operating procedures during operation, and refer to the user manual and manufacturer's instructions of the machine tool.