Automatic hub deburring device

The automatic hub deburring device comprises a bottom plate, a shell is arranged on the upper wall face of the bottom plate, a top plate is fixedly installed on the upper wall face of the shell, two pairs of first air cylinders are arranged on the upper wall face of the top plate, the telescopic ends of the first air cylinders are connected with first clamping plates, and a limiting opening is formed in the upper wall face of the top plate. A limiting block is slidably connected into the limiting opening, the limiting pin is slidably connected into the limiting groove, and a fixing mechanism is arranged on the upper wall face of the bottom plate. The hub pre-positioning device relates to the technical field of hub production and is compact in structure, the hub is pre-positioned through the limiting blocks, the inner side and the outer side of the hub can be pre-positioned, and when the outer side wall face of the hub needs to be polished and machined, only the upper wall face fixing frames of the limiting bl