The lubrication system of a vertical machining center is an indispensable part of the machine's normal operation. The performance of the lubrication system directly affects the mechanical and processing capabilities of the vertical machining center. Simply put, its working principle involves mixing individually supplied lubricating oil with compressed air to form a turbulent oil-air mixture, which is then supplied to the main spindle or other areas requiring lubrication.

The working principle of the vertical machining center's lubrication system:

The principle of operation is to utilize the flow of compressed air within the pipeline to continuously drive lubricating oil along the inner wall of the pipeline, mixing and transporting the oil-gas mixture to the main spindle and screw threads, among other lubrication-requiring parts. Dry compressed air is supplied at a constant pressure (5-8 BAR) continuously, while the lubricating oil is supplied in a quantitative manner based on the varying oil consumption of the main spindle lubrication, screw thread lubrication, or other areas. Therefore, each lubrication circuit must use a separate miniature oil pump as the power source for oil transportation. After being pumped out by the pressure pump, the lubricating oil must first enter the oil-gas mixing valve. Inside the valve, the flowing compressed air blows the oil into fine droplets, which adhere to the tube wall to form a film. This film flows along the tube wall in the direction of the air flow, gradually thinning out during the process but not coalescing. This process is referred to as the normal lubrication function of the machining center's lubrication system, which is also the working principle commonly understood for vertical machining center lubrication systems.