To prevent the deformation of CNC vertical lathe, the following measures can be taken:

1. Selection of machine tool rigidity: choose a machine tool with sufficient rigidity, especially the bed structure. High-rigidity machine tools can reduce vibration and deformation during cutting.
2. Reinforcement and reinforcement of the machine tool: through reinforcement and reinforcement of the machine bed and various key parts, the overall rigidity of the machine tool is improved. The rigidity of the machine tool can be increased by strengthening the support, thickening the bed or increasing the support structure.
3. Reduce the length of the cantilever: Reducing the length of the cantilever of the tool holder can reduce the influence of cutting force on the machine tool and reduce the possibility of deformation. Reasonably design and configure tool holders, worktables and other components to minimize the length of the cantilever.
4. Workpiece clamping method: adopt a suitable workpiece clamping method, and ensure that the fixture design and adjustment are good, so that the workpiece clamping force is evenly distributed. Uniform clamping force can reduce workpiece deformation.
5. Cutting parameter control: Reasonably set cutting parameters, including cutting speed, feed speed, cutting depth, etc. Excessive cutting force may cause deformation of the machine tool, so it is necessary to control the cutting force as much as possible under the premise of ensuring the processing quality.
6. Cooling and lubrication measures: effective cooling and lubrication of the cutting process to reduce cutting temperature and friction, and reduce the possibility of thermal deformation.
7. Regular maintenance and maintenance: Regular maintenance and maintenance of the CNC vertical lathe, including inspection and cleaning of the lubrication system, fastening of machine tool components, etc. Keeping your machine tool in good working order helps prevent warping.
8. Working environment control: Try to avoid the influence of external environmental vibration and interference on CNC vertical lathe. Reduce or eliminate the influence of external factors on the stability of machine tools through reasonable work area layout and isolation measures.

In general, through the comprehensive consideration of machine tool selection and reinforcement, process optimization, clamping method improvement, cutting parameter control and other aspects, the deformation of CNC vertical lathe can be effectively prevented, and the processing quality and stability can be improved.