Large-diameter nonmetal skin turning device

The invention relates to the field of large launcher tail section skin outer circle machining, in particular to a large-diameter nonmetal skin turning device. The large-diameter nonmetal skin turningdevice comprises a blank body, an upper end plate, a pedestal set, a bottom plate, an upper pressing plate set, a lower pressing plate set and a fastening device set. The blank body is of a hollow cylindrical structure which is vertically placed, and the upper end plate is of a circular plate structure and is concentrically fixedly mounted at the axial top end of the blank body. The bottom plate is of a ring structure and is concentrically fixedly mounted at the axial bottom end of the blank body, and the pedestal set is fixedly mounted on the connecting position of the blank body and the bottom plate. The outer wall of the blank body is wrapped with an outer skin structure, and the upper pressing plate set is fixedly mounted on the side wall of the top end of the outer skin structure. Thelower pressing plate set