The invention discloses a deburring machine numerical control machining device. The device comprises a machine cabinet and a machine plate; a feeding conveying belt and a discharging conveying belt are arranged on the two sides of the outer wall of the top of the machine plate, a material clamping rotating assembly is arranged between outer walls of opposite sides of the feeding conveying belt andthe discharging conveying belt, the bottom end of the material clamping rotating assembly is fixed to the inner wall of the machine cabinet through a bolt, a rotating positioning assembly is arrangedon the edge, close to the material clamping rotating assembly, of the outer wall of the top of the machine plate, a part taking assembly and a deburring assembly are arranged at the side, close to the rotating positioning assembly, of the outer wall of the top of the machine plate, and a dust suction hopper is arranged between the part taking assembly and the discharging conveying belt. The device is simple in structure, material burrs can be automatically removed on the machine, labor force is reduced, work efficiency of workers can be improved, work time is shortened, a rotation structure is arranged, multi-station equal machining is carried out, precision is higher, a production line forms a T machining area, and the machining efficiency is higher.