Preventing workpiece deformation in CNC vertical lathe processing is key, especially when high-precision machining is required. The following are some effective measures to prevent deformation in CNC vertical lathe processing:

1. Reasonably select the workpiece material: Select the appropriate CNC vertical lathe workpiece material and consider its thermal expansion coefficient and stability. Some materials have less thermal deformation during processing, which can help alleviate deformation problems.

2. Preheat workpieces: For large or easily deformed workpieces, CNC vertical lathes can be preheated before processing. Preheating helps reduce stress within the material and reduces the possibility of deformation.

3. Proper clamping: CNC vertical lathes adopt appropriate clamping methods to ensure that the workpiece is clamped firmly and evenly. Consider using supports or clamps to reduce vibration and deformation.

4. Reduce cutting force: CNC vertical lathe reduces cutting force and reduces the stress and deformation of the workpiece through reasonable selection of tools, cutting parameters and cutting paths.

5. Avoid excessive cutting: CNC vertical lathe avoids excessive removal of material in one cutting. You can choose multiple light cuts to reduce the load of each cutting.

6. Cooling and lubrication: The CNC vertical lathe maintains proper cooling and lubrication to avoid overheating, which helps to lower the temperature of the material and slow down deformation.

7. Reduce processing time: CNC vertical lathes try to reduce the processing time of a single workpiece and avoid excessive thermal effects.

8. CNC program optimization: By optimizing the CNC vertical lathe CNC program, unnecessary movement and idling are reduced, and the thermal deformation of the machine tool is reduced.

9. Check and adjust the machine tool: Regularly check the machine tool accuracy of the CNC vertical lathe to ensure that each axis of the machine tool moves smoothly and reduce the deformation of the machine tool itself.

10. Subsequent processing: Consider heat treatment or other subsequent processing after CNC vertical lathe processing to release possible internal stress and reduce workpiece deformation.

11. Real-time monitoring: CNC vertical lathes use real-time monitoring systems to monitor the processing process, detect abnormalities in time, and take measures to reduce the possibility of deformation.

These measures can be adjusted and combined according to specific processing conditions and workpiece requirements to improve processing quality and reduce workpiece deformation.