Appearance forming cutter

The invention discloses an appearance forming cutter which comprises a cutter body and one or more cutting seats formed at the top end of the cutter body. The cutting seats are twisted rightwards with the longitudinal central axis as a reference axis. Chip guide grooves are formed between the adjacent cutting seats and connected with the adjacent cutting seats in a smooth mode. Concave positions are formed in the tops of the cutting seats and are formed in the parts close to the longitudinal central axis. The cutting seats are provided with twisted arc surfaces and cutting planes, wherein the cutting planes are located at the tops of the cutting seats and connected with the twisted arc surfaces, the twisted arc surfaces are tangent to the side parts of the cutting seats to form cutting edges, and the length of the twisted arc surfaces is smaller than the length of the cutting seats. The appearance forming cutter has the advantages of being simple in structure, convenient to machine and low in production cost; it is avoided that cutters are changed many times when non-standard parts are machined, and the potential safety hazards caused when the cutters are changed are reduced.