Plugging milling cutter

The utility model provides a plunge milling cutter which is used for cutting a plurality of surfaces of a product and comprises a cutter handle part, a first cutting part which is arranged at one end of the cutter handle part and comprises a first cutting edge, a second cutting edge and a third cutting edge, the first cutting edge is obliquely arranged relative to the axis direction of the cutter handle part, and the third cutting edge is obliquely arranged relative to the axis direction of the cutter handle part. The second cutting edge is connected to the side, away from the cutter handle part, of the first cutting edge and extends in the axis direction of the cutter handle part, and the third cutting edge is connected with the second cutting edge and is perpendicular to the axis direction of the cutter handle part. According to the plunge milling cutter, cutting machining and chamfering machining of the surface of a product can be achieved through one cutter, the problem of cutter replacement does not exis