Highlight stepped groove forming milling cutter

The utility model relates to the technical field of milling cutters, in particular to a highlight stepped groove forming milling cutter, which is characterized by comprising a cutter bar and a cutterhead, a peripheral blade is arranged at the side part of the tool bit and comprises a first peripheral blade, a second peripheral blade and a third peripheral blade which are connected in sequence, the first peripheral blade is used for machining a small groove of the stepped groove, and the third peripheral blade is used for machining a large groove of the stepped groove; a chip groove is formedin the tool bit and comprises a first groove body and a second groove body which are sequentially connected in the axial direction of the tool bit, the first groove body is used for forming the slotting front angle face of the first circumferential blade, and the second groove body is used for forming the slotting front angle face of the third circumferential blade. According to the technical scheme provided by the utility