The main reason for oil spraying in CNC vertical lathes is to lubricate and cool the moving parts of the machine tool as well as the cutting tools and workpieces to improve processing efficiency, extend tool life, and maintain the accuracy of the machine tool. The following are the main reasons for oil injection in CNC vertical lathes:

1. Lubrication: The CNC vertical lathe oil injection system sprays lubricating oil or lubricating liquid to various moving parts of the machine tool, such as bearings, guide rails, etc., to reduce friction, improve the operating efficiency of the machine tool, and extend the service life of the parts.

2. Cooling: During the cutting process of CNC vertical lathe, the high-speed rotating tool and workpiece may generate a large amount of heat. The oil injection system reduces the temperature of the tool and workpiece by injecting cooling oil mist or cooling liquid, preventing overheating, improving cutting efficiency, and reducing deformation of parts caused by heat.

3. Dust prevention: CNC vertical lathe oil mist can also form a lubricating film when the machine tool is running, helping to prevent dust and cutting chips from adhering to the moving parts of the machine tool, reducing wear and maintaining the accuracy of the machine tool.

4. Anti-rust: The CNC vertical lathe oil injection system can also spray anti-rust agent when the machine tool is shut down to prevent the moving parts of the machine tool from rusting due to humid environment and maintain the quality and life of the machine tool.

5. Cutting fluid replacement: In some cases, CNC vertical lathe oil injection system can be used as a cutting fluid replacement. During cutting, oil mist can act as cutting fluid, reducing friction and temperature in the cutting area.

6. Automation control: CNC vertical lathe oil injection system is usually managed by the automation control system of CNC machine tools. Automatic control can intelligently adjust the injection volume and timing of the oil injection system based on factors such as process requirements, cutting conditions, and machine tool status.

The main purpose of CNC vertical lathe oil spray is to achieve lubrication, cooling, dust prevention and rust prevention during the operation of the machine tool, thereby maintaining the performance of the machine tool and improving processing efficiency. Different processing requirements and process conditions may require adjustments to the parameters and working methods of the oil injection system.