Compound Spray Minimal Quantity Lubrication Cooling System

Abstract

The invention discloses a composite spray micro-lubrication cooling system, which includes a nozzle, an inner spray chamber and an outer spray chamber arranged concentrically inside and outside; a water supply device connected with the inner spray chamber for providing pressure and flow Adjustable water; and an oil mist supply device, connected with the external injection chamber, for providing oil mist with adjustable pressure and flow rate, adopting a concentric nozzle structure to make water and oil mist mix according to a predetermined ratio, and using oil to Due to the characteristics of the surface floating on water, the oil mist airflow output by the outer ring will break up the water to form a spray of oil film with water droplets attached, so as to ensure that the oil film is coated on the workpiece and tool to increase the evaporative cooling effect and take it away more quickly heat generated during processing.

Description

technical field [0001] The invention relates to the technical field of cooling systems, in particular to a compound spray micro-lubrication cooling system. Background technique [0002] Minimal quantity lubrication cooling cutting usually refers to the mixing and vaporization of compressed gas and a small amount of lubricating oil to form a micron-sized droplet oil mist, which is sprayed into the cutting area through the nozzle at high speed, so as to effectively cool and lubricate the cutting area. The existing common minimum quantity lubrication cooling system sprays oil mist to the cutting area, and the heat generated by the cutting process is limited by air cooling, that is, if the heat generated by cutting cannot be effectively removed, the oil film will quickly fail and the lubrication effect For this reason, the prior art also uses compressed gas such as liquid nitrogen that can quickly vaporize and absorb heat under normal temperature and pressure, and then quickly t...

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Problems solved by technology

[0004] However, the existing low-temperature water mist oil mist cooling and lubrication system usually transports water and oil mist to the nozzle separately, and then mixes and atomizes the water and oil mist again at the nozzle through compressed gas. The particles formed by this atomization method It is relatively random and may form three types of particles: water particles, oil particles and water droplets attached to the oil film. Due to the immiscibility of oil and water, if the water particles first adhere to the surface of the workpiece and the tool, the lubricating oil cannot be directly coated On the surface of the tool and the workpiece, the lubrication effect cannot be produced, and thus a stable and good surface roughness cannot be guaranteed

[0005] Patent document CN 206748079U discloses a low-temperature water mist oil mist cutting cooling and lubrication supply system. In this technical solution, a composite spray is formed through a vortex atomizing nozzle. As a result, the formation of composite spray particles is random, it is difficult to stably form oil film with water droplet particles, and the stable surface quality after processing cannot be guaranteed.

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