Cooling device for water outlet cutter of main shaft of machining center

The utility model discloses a machining center main shaft water outlet cutter cooling device which comprises a main shaft piece, a cutter piece is fixedly arranged at the bottom end of the main shaft piece, a cooling mechanism used for cooling the cutter piece is arranged on the outer side of the main shaft piece, and the cooling mechanism comprises a side panel. The side panel is located on the outer side of the main shaft piece, and a T-shaped sliding block is fixedly installed on the outer side of the side panel. The T-shaped sliding block fixedly installed on the outer side of the side panel slides in the limiting groove, the rotating shaft is located in the U-shaped groove and is rotationally connected with the U-shaped groove, the telescopic hose is fixedly arranged on the rotating shaft, and therefore the T-shaped sliding block slides in the limiting groove and can drive the side panel to ascend and descend in height when a worker replaces the tool part, and the tool part is replaced conveniently. Ther