Round head cutter for round head forming of bar

The utility model discloses a round head cutter for rounding a round head of a bar, and relates to the technical field of grinding equipment. Comprising a cutter body and a shaft sleeve installed in the cutter body through a bearing, a grinding cavity with the diameter consistent with that of the shaft sleeve is formed in one end of the shaft sleeve, the grinding end of a bar extends into the grinding cavity through the shaft sleeve, and an embedding groove used for being connected with the bearing and the shaft sleeve in a sleeved mode is formed in one end of the cutter body. A fixing edge with the outer diameter larger than the inner diameter of the bearing is arranged on one side of the shaft sleeve, an arc-shaped transition opening is formed in the connecting position of the fixing edge and the shaft sleeve, and a blade installation groove used for replacing the blade is formed in the outer portion of the cutter body. By arranging the cutter body, the shaft sleeve and the bearing, the shaft sleeve is matc