Numerical control machine tool for machining two end faces of box of valve

The invention relates to a numerical control machine tool for machining the two end faces of a box of a valve. The numerical control machine tool comprises a programmable logic controller, an X-axis driver, a Z-axis driver, a main motor, an X-axis motor and a Z-axis motor; the programmable logic controller is electrically connected with the X-axis driver and the Z-axis driver, the X-axis driver is connected with the X-axis motor, the X-axis motor is in transmission connection with an X-axis lead screw, the X-axis lead screw is connected with an X-axis lead screw nut in a sleeved manner, the X-axis lead screw nut is in transmission connection with a cutter rest, and the cutter rest is fixedly connected with an outer circular knife and an inner hole knife; the Z-axis driver is electrically connected with the Z-axis motor, the Z-axis motor is in transmission connection with a Z-axis lead screw, the Z-axis lead screw is connected with a Z-axis lead screw nut in a sleeved manner, the Z-axis lead screw nut is in tr