Column CNC lathes may be affected by various factors and deform during the processing process, affecting processing accuracy and quality. Here are some ways to prevent deformation during machining on a column CNC lathe:

1. Reasonable selection and installation of tools: Using appropriate tools for CNC lathes can reduce cutting forces and reduce the impact on the structure of CNC lathes. Ensure that the selection, installation and edge condition of the tool meet the processing requirements.

2. Optimize cutting parameters: CNC lathes adjust cutting parameters, such as cutting speed, feed speed and cutting depth, to reduce the effects of cutting force and thermal deformation.

3. Reasonable workpiece processing sequence: When CNC lathes perform multi-process processing, they should reasonably plan the processing sequence of workpieces to avoid concentrating on the same area for continuous processing to reduce the possibility of local deformation.

4. Use appropriate clamping devices: Choose appropriate clamping methods and fixtures for CNC lathes to ensure that the workpiece is firmly clamped during processing and reduce the possibility of deformation.

5. Control the machine tool temperature: Maintain the stability of the ambient temperature around the machine tool and prevent the expansion or contraction of the machine tool structure caused by temperature changes in the CNC lathe.

6. Regular inspection and maintenance: Regularly inspect various parts of the CNC lathe to ensure the stability of the machine tool structure. Pay special attention to checking the wear and looseness of key components such as CNC lathe guide rails, screws, and bearings.

7. Use stable and rigid materials: Choose stable and high-rigidity materials in the structural design of machine tools to improve the overall rigidity and stability of the machine tool.

8. Reasonably arrange the processing sequence: Avoid frequent cutting in the same area of the machine tool. CNC lathes can reduce the impact on the machine tool structure during processing through reasonable process planning.

9. Use temperature compensation system: Some advanced CNC machine tools have a temperature compensation system. CNC lathes can automatically adjust the compensation of the machine tool by monitoring temperature changes to reduce deformation caused by temperature.

The above method is to comprehensively reduce the impact of the processing deformation of the column CNC lathe. The actual application needs to be adjusted based on the specific workpiece and processing conditions.