To operate the tool of CNC vertical lathe, the following steps need to be followed:

1. Select the appropriate tool: select the appropriate tool according to the processing requirements and the characteristics of the workpiece. Common CNC vertical lathe tools include turning tools, drilling tools, tooth row tools, etc. Make sure that the tool has good cutting performance and wear resistance.
2. Install the tool: use the correct tools and methods to install the tool on the tool holder or turret. Make sure the knives are securely fastened to avoid loose or unstable rotation. At the same time, adjust the position and angle of the tool according to the geometric parameters and processing requirements of the tool.
3. Set cutting conditions: Set appropriate cutting parameters according to the material, shape and processing requirements of the workpiece. This includes cutting speed, feed rate and depth of cut etc. The selection of cutting conditions should refer to the material processing manual or empirical knowledge to ensure that the cutting process is stable and the processing quality is good.
4. Determine the starting point of cutting: Determine the starting point of cutting according to the processing program and workpiece requirements. The tool can usually be moved to a predetermined starting position using a preset function in the CNC system or manually. Make sure the tool is far enough away from the workpiece to avoid collisions while maintaining a good cutting posture.
5. Perform cutting operation: start the cutting process through the cutting command in the CNC system or manual operation. The CNC system automatically controls the movement of the tool in the selected axis and controls the feed rate and depth of cut. During the cutting process, pay attention to observe the cutting state to ensure stable cutting and good surface quality.
6. Monitor and adjust cutting conditions: During the cutting process, continuously monitor the cutting status and cutting parameters. According to the chip shape, cutting sound, workpiece surface quality and other indicators, judge whether the cutting conditions are suitable, and adjust and optimize as needed.
7. End of cutting and tool retraction: After the cutting process is completed, return the tool to a safe position in accordance with the safety procedures and operating specifications. Make sure the tool is separated from the workpiece to avoid collisions or other accidents.

It is necessary to fully understand the use method and operation specification of the CNC system to operate the cutting tools of the CNC vertical lathe. Adjust and optimize according to the specific CNC vertical lathe model and processing requirements, combined with the operation manual and experience and knowledge. If you are not familiar with the operation or encounter problems, you should consult relevant professionals or technical support personnel for help in time.