Vertical numerical control mill

The utility model relates to the technical field of machining process accessory devices, in particular to a vertical numerical control milling machine which can fix a cylindrical tool bit and adjust the height of the fixed cylindrical tool bit. In addition, a large number of milled chippings can be automatically collected, and time and labor are saved; a part can be clamped and fixed, so that thepracticability is improved; the device comprises a first motor, a rotating shaft and a cylindrical tool bit; two sets of left supporting plates, two sets of right supporting plates, four sets of firsthydraulic cylinders, four sets of first telescopic rods and a fixing plate are further included, and the top output ends of the four sets of first hydraulic cylinders are connected with the bottom ends of the four sets of first telescopic rods correspondingly; the device further comprises a filter plate, two sets of second hydraulic cylinders, two sets of second telescopic rods, two sets of smooth rods, two sets of smooth