Clamp tool for shell type workpiece with cambered surface

The utility model provides a clamp tool for shell type workpieces with cambered surfaces, which comprises a positioning structure and a clamping structure, the positioning structure comprises a positioning base, and the top surface of the positioning base is provided with a positioning groove for mounting the workpieces; a pressing mechanism is arranged on one side of the positioning base and provided with a pressing plate, and the pressing plate can apply downward pressure to the workpiece in the positioning groove. A jacking mechanism is arranged on the other side of the positioning base and is provided with a jacking rod, and the jacking rod can apply horizontal pressure to the workpiece in the positioning groove; the clamping structure comprises two clamps located on the two sides, and clamping arms are arranged on the two clamps. The clamping arms are of a V-shaped structure, and openings of the two clamping arms are oppositely arranged. The workpiece is positioned through the positioning groove, the wor