Four-axis numerical control vertical machining center

The utility model provides a four-axis numerical control vertical machining center. The four-axis numerical control vertical machining center comprises an objective table fixedly installed on a four-axis numerical control machine tool and a workpiece direction adjusting device fixedly installed on one side of the top of the objective table, and one side of the workpiece direction adjusting device is rotationally connected with a driving disc. According to the four-axis numerical control vertical machining center, through cooperative use of a fixing plate, a buckle, a first fixing pin, a fixing frame and a second fixing pin, the machining center can drive a first pull rod and a second pull rod to move while driving the fixing plate to move in the axial direction of a first lead screw under driving of a first motor; according to the machining center, the limiting seat body is arranged on the first lead screw, then the limiting seat body is clamped and fixed above the first lead screw through the clamping block,