Metal cutting machine

The utility model relates to the technical field of metal cutting, in particular to a metal cutting machine which comprises a working table, a loading frame is arranged on the rear side of the working table, a cutting machine body is rotatably installed on the rear upper side of a cutting seat, an air cylinder push rod is rotatably installed on the front upper side of the loading frame, and a positioning clamping assembly is arranged on the working table. A bearing plate is pushed through a pushing air cylinder, positioning sliding of a positioning air cylinder and a limiting baffle is achieved, the positioning air cylinder and the limiting baffle can conduct positioning and clamping regulation and control according to the length of a metal workpiece, and the clamping and positioning effect of the metal workpiece is good; according to the metal workpiece cutting device, the two sides of the cutting portion of a metal workpiece can be clamped and positioned, the cutting, clamping and positioning effect of the