Milling cutter for automobile blade wheel

The utility model belongs to the technical field of automobile impeller machining, and particularly relates to an automobile impeller milling cutter which comprises a cutter holder with a central hole, a cutter head, a screw and a mounting shaft, and the mounting shaft is embedded into the central hole of the cutter holder; a U-shaped elastic piece is fixed to the tool apron, an auxiliary stabilizing groove capable of containing the U-shaped elastic piece is formed in the outer wall of the tool bit, and the two ends of the U-shaped elastic piece are each provided with a first bent part bent towards the outer side. Two symmetrically-distributed overturning connecting arms are hinged to the inner wall of the auxiliary stabilizing groove. According to the milling cutter disclosed by the utility model, through the arrangement of the U-shaped elastic sheet and the turnover connecting arm, after the cutter head is fixed, the second bending part can generate a relatively strong buckling effect on the first bending p