Hub machining positioning device

The utility model relates to the technical field of aluminum alloy hub machining, and discloses a hub machining positioning device which comprises a center seat arranged on an operation table, a positioning mandrel is arranged at the top end of the center seat corresponding to a shaft hole of a hub, and a positioning pin is arranged at the top end of the center seat corresponding to a flange hole of the hub and used for positioning the radial angle of the hub. When a decorative ring fixing hole is machined in the hub, the positioning precision of the fixing hole is guaranteed, when the decorative ring is installed on the hub through the fixing hole, a valve hole of the hub is located in the center of an avoiding space of the decorative ring, the problems that a traditional positioning mode is low in operation efficiency and poor in positioning precision are solved, the labor intensity of operators is reduced, and the working efficiency is improved. And the problem of eye injury caused by laser is avoided. And