Punching machine for machining microwave oven shell

The punching machine comprises a machine body, an upper die and a lower die, the upper die and the lower die are both installed on the machine body and are arranged in the vertical direction, the upper die is located above the lower die, a receding hole is formed in the lower die, a jacking rod used for jacking a stainless steel plate is arranged in the receding hole in a penetrating mode, and the jacking rod is located in the machine body. The jacking rod is in sliding connection with the receding hole, the sliding direction of the jacking rod is the same as the length direction of the jacking rod, a driving assembly for driving the jacking rod to slide is arranged on the machine body and comprises a motor, a driving gear and a rack, the motor is fixedly arranged on the machine body, and the output end of the motor is coaxially and fixedly connected with the driving gear; the driving gear is meshed with the rack, and the rack is fixed to the jacking rod. The punching machine has the advantages that the stain