In CNC vertical lathes, correct workpiece clamping is crucial to the accuracy and safety of processing. Here are some important things you should pay attention to when clamping your workpiece:

1. Workpiece positioning: Ensure that the CNC vertical lathe workpiece is correctly positioned during the clamping process. Use appropriate clamps and positioning elements to ensure that the workpiece is firmly held in the correct position and avoids moving or deviating from the intended position during machining.

2. Fixture selection: Select the appropriate fixture for the CNC vertical lathe to ensure that the workpiece is firmly clamped. Fixture selection should consider the shape, size and processing needs of the workpiece. Workpieces of different shapes and sizes may require different types of clamps to ensure stability.

3. Clamping force: The clamping force of the CNC vertical lathe fixture should be moderate, not only to ensure that the workpiece will not slide or rotate, but also to avoid deformation or deformation of the workpiece due to excessive clamping force. The clamping force of the fixture needs to be adjusted based on the specific workpiece and material.

4. Parallelism and perpendicularity: When clamping the CNC vertical lathe, ensure the parallelism and perpendicularity of the workpiece relative to the machine bed. This helps maintain accuracy and consistency in machining.

5. Tool contact: Ensure that the CNC vertical lathe fixture does not hinder the normal operation of the tool. Avoid clamping the tool or other machine parts to prevent damage to the tool and accessories.

6. Workpiece support: For long and thin workpieces in CNC vertical lathes, it is necessary to consider adding appropriate supports to prevent vibration and deformation. The location of the support points should be carefully planned to ensure that the workpiece remains stable during processing.

7. Cleaning: Before clamping the CNC vertical lathe, ensure that the surface of the fixture and workpiece is clean. Debris and dirt may affect the clamping effect of the fixture and even cause unstable workpiece fixation.

8. Safety considerations: Ensure safety during the CNC vertical lathe clamping process. Operators should follow proper safety procedures and use appropriate protective gear to prevent injury or damage to the machine tool.

These precautions help ensure that the CNC vertical lathe can obtain the best processing results when clamping the workpiece, and improve processing accuracy and safety. The specific clamping methods and precautions may vary depending on the machine tool model, workpiece characteristics and processing requirements. Therefore, it is best to refer to the machine tool's operation manual and relevant technical specifications before specific operations.