Numerical control drilling machine for granite precision machining

The utility model discloses a numerical control drilling machine for granite precision machining, and relates to the technical field of numerical control drilling machines. The numerical control drilling machine comprises a machine base, a drilling machine body is fixedly arranged at the top of the machine base, a machine head is movably arranged in the drilling machine body, and a drill bit is rotationally arranged at the center of the bottom of the machine head; a corrugated pipe is fixedly connected to the bottom of the fixing sleeve, a fixing ring is fixedly connected to the bottom end of the corrugated pipe, the drill bit is located in the fixing sleeve, the corrugated pipe and the fixing ring, two symmetrically-distributed reset springs are fixedly connected between the top of the fixing ring and the bottom of the machine head, and the reset springs are located outside the fixing sleeve and the corrugated pipe. And an air suction pipe is fixedly connected in the fixed sleeve. The fixing ring is pressed