Minimum quantity lubrication cooling system

The invention discloses a minimal quantity lubrication cooling system in the field of hub turning, which comprises a mixer, the mixer comprises a main mixing cylinder, an aeration cylinder is coaxially arranged in the main mixing cylinder, and the left end and the right end of the main mixing cylinder are correspondingly connected with an oil inlet joint and a water inlet joint respectively; the interiors of the oil inlet connector and the water inlet connector are both communicated with the interior of the main mixing cylinder, one side of the aeration cylinder is fixedly connected with an air inlet cylinder extending out of the main mixing cylinder, an air groove communicated with the air inlet cylinder is formed in the aeration cylinder, and a plurality of aeration holes are fully formed in the cylinder wall of the aeration cylinder; a lubricating cooling pipe is arranged on the side face of the main mixing cylinder, a lubricating cooling groove communicated with the lubricating cooling pipe is formed in t