Numerical control machine tool

The invention discloses a numerical control machien tool. The numerical control machine tool is characterized by comprising a base, a rack is arranged in the middle of the upper portion of the base and arranged in the length direction of the base, a shaft sleeve is rotationally arranged in the rack, a chuck is connected to the front end of the shaft sleeve, the rear end of the shaft sleeve penetrates out of the rack, a rotating motor is arranged at the upper portion of the rack, a driving shaft of the rotating motor is connected with the part, penetrating out of the rack, of the shaft sleeve through a transmission belt, clamping air cylinders are arranged at the positions, located on the two sides of the shaft sleeve, of the rear side of the rack correspondingly, and clamping blocks are connected to the front ends of piston rods of the clamping air cylinders. According to the numerical control machien tool, a cutter can be conveniently replaced, so that the machining efficiency is improved, and different mach