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The segmented manufacturing of curved surfaces is a key process with great difficulty in shipbuilding production. The cold bending of the profile in the curved surface segment has been produced by numerical control, but the hull shell processing in the curved surface segment is still in manual mode in almost all shipyards all over the world, which has low production efficiency, poor working environment and labor intensity. Large, difficult to guarantee product quality, etc., have become a hard problem in shipbuilding production. Therefore, realizing the automatic processing of the hull shell is a key problem in improving the manufacturing technology of curved surface segments. 

The outer plate processing is plastic deformation, the bending process will produce springback, and it is also prone to wrinkle deformation. Automatic forming is particularly difficult. After long-term research, discussion and testing, Wuhan University of Technology and Shandong Zhongshuo Machinery Equipment Manufacturing Co., Ltd. can use it at will The invention patent of the "square plate indenter adjustable movable die plate curved surface forming device", which has curved surface modeling, large pressing surface, and can prevent wrinkle deformation caused by the instability of the pressed plate, has been developed through a large number of experiments, calculations and designs, including: Cold press bending machine, automatic control system, laser three-dimensional measuring machine and feeding device, etc. "ship numerical control bending machine".