Punching fixing device for flange plate

The utility model provides a punching fixing device for a flange plate, which comprises an equipment bottom plate, a plurality of clamp bottom plate limiting holes are formed in the equipment bottom plate, and a clamp bottom plate is arranged on the upper side of the equipment bottom plate. The clamp bottom plate is installed in clamp bottom plate limiting holes in the equipment bottom plate through a clamp bottom plate positioning piece and two clamp bottom plate fixing pieces, a plurality of pairs of high-position fixing frames and low-position fixing frames are arranged on the upper side ofthe clamp bottom plate, and a middle supporting frame is arranged in the middle of the clamp bottom plate. The high-position fixing frame and the low-position fixing frame comprise T-shaped supporting frames, supporting threaded sleeves are arranged at the upper ends of the T-shaped supporting frames, the lower ends of the T-shaped supporting frames are installed on the clamp bottom plate throughfixing bolts, and flange