Cutter cooler for numerical control machine tool

The invention relates to the technical field of machine tool accessories, in particular to a tool cooler for a numerical control machine tool, which comprises a sleeve, the upper side of the sleeve is connected with a tool chuck and forms a U-shaped flow guide cavity with a downward opening, a ventilation slot is formed in the side wall of the sleeve, a plurality of fan-shaped air outlets are formed in the sleeve, and the fan-shaped air outlets are communicated with the ventilation slot. A ventilation groove is formed in the side wall of the sleeve, air outlets are formed in the side wall of the sleeve and communicate with the ventilation groove, an air supply pipe is arranged on the sleeve and communicates with the ventilation groove, a liquid passing groove is further formed in the side wall of the sleeve, an annular film forming opening is formed in the inner side wall of the sleeve and communicates with the liquid passing groove, and a liquid supply pipe is arranged on the sleeve and communicates with the