Automobile hub machining and positioning device

The utility model provides an automobile hub machining positioning device, and relates to the field of novel automobile part machining equipment, the automobile hub machining positioning device comprises a base, supporting frames are arranged at the top end of the base close to the left side and the right side, positioning mechanisms are arranged on the peripheries of the two supporting frames, and each positioning mechanism comprises an upper fixing piece. A lower fixing part is arranged below the upper fixing part, pulleys are arranged in the upper fixing part and the lower fixing part, sliding grooves are formed in the positions, located on the inner side of the supporting frame, of the back faces of the pulleys, the peripheries of the upper fixing part and the lower fixing part are sleeved with U-shaped positioning buckles, and fixing bolts are arranged on the front faces of the positioning buckles. A plurality of positioning grooves are evenly formed in the front faces of the two supporting frames from t