Automatic hub turning device

The utility model provides an automatic hub turning device comprising a support with a platform on the upper portion. Roller-type conveying guide rails are arranged on the support. Clamps for clamping the hub are arranged on the middle portion of the support, are symmetrically mounted on two sides of a shaft, and are connected to a clamping cylinder. A gear is arranged on one end portion of the shaft on two sides of the clamping cylinder. A rack is arranged on the gear and is meshed with the same. Two ends of the rack are respectively connected with a plunger rod of a rotating cylinder. The conveying guide rails, the clamping cylinder and the rotating cylinder are all connected with a control center. By the aid of the automatic hub turning device, labor force of workers can be reduced, and working efficiency can be provided.