In order to prevent the CNC vertical lathe from deformation due to thermal characteristics during use, the following methods can be adopted:

1. Stabilize the ambient temperature: Control the temperature of the environment where the CNC vertical lathe is located to avoid the impact of drastic changes in temperature on the structure of the lathe. You can use air conditioning to adjust the room temperature, or use temperature-stable environmental control equipment.
2. Strengthen machine tool rigidity: Resist deformation caused by heat conduction by increasing the rigidity and stability of CNC vertical lathe materials. The machine tool structure can be optimized, the thickness of the bed and columns can be increased, and materials with high strength and low thermal expansion coefficient can be used.
3. Thermal compensation system: The thermal compensation system is introduced to monitor and correct the thermal deformation of the machine tool. The thermal compensation system can reduce the impact of thermal deformation by measuring the temperature of different parts of the machine tool and controlling the compensation movement according to pre-set parameters.
4. Cooling system: Ensure that the cooling system of the CNC vertical lathe works normally and cool various components of the machine tool in a timely manner to control the accumulation and conduction of heat. The cooling system may include a circulation system of gas, liquid or coolant.
5. Preheating and thermal stabilization: Before the CNC vertical lathe is started, a preheating operation can be performed to heat the machine tool to the operating temperature, so that all parts of the machine tool expand evenly and reduce the impact of thermal deformation. At the same time, thermal stabilization technology can also be used to gradually increase the temperature during the operation of the machine tool to make the machine tool work stably.
6. Regular maintenance and inspection: Regularly maintain and inspect the CNC vertical lathe to ensure the normal operation and heat resistance of each component, and promptly discover and deal with problems that may cause deformation.

In summary, by stabilizing the ambient temperature, increasing the rigidity of the machine tool, introducing a thermal compensation system, optimizing the cooling system, preheating and thermal stabilization, and regular maintenance, the influence of the thermal characteristic deformation of the CNC vertical lathe can be effectively reduced and the machine tool's performance can be maintained. Accuracy and stability. The specific method selection should be determined based on the machine tool model, usage conditions and processing requirements.