Numerical control knife rest

The utility model relates to the technical field of numerical control equipment, in particular to a numerical control tool rest which comprises a tool rest box, a control panel is arranged on one side of the tool rest box, a rotary cutter head and five mounting frames are rotationally installed in front of the tool rest box, the mounting frames are all installed on the rotary cutter head, and the control panel is arranged on the control panel. The utility model relates to a blade mounting device, in particular to a blade mounting device, which comprises a mounting frame, an electric telescopic rod and a blade, the mounting frame is internally provided with a mounting groove, the mounting frame is internally provided with an electromagnet, and the mounting frame is provided with a disassembly and assembly box. The blade mounting device is provided with the mounting frame, the electromagnet, the disassembly and assembly box and the electric telescopic rod, in actual use, a blade with a clamping groove can be mo