Su, S.; Hu, Y., and Wang, C., 2015.The key technology research about 3DCNC bending machine and experimental
verification. In: Mi, W.; Lee, L.H.; Hirasawa, K., and Li, W. (eds.), Recent Developments on Port and Ocean
Engineering. Journal of Coastal Research, Special Issue, No. 73, pp. 584-588. Coconut Creek (Florida), ISSN 0749-
0208.
Due to the complex curved surface shape, large size and small batch about hull plate,the 3D CNC bending machine
is emerged. It is a breakthrough in the ship 3D surface cold forming area and has great practical significance. The
key and innovative technologies are as follows. They are the square head adjustable die forming device which can
well solve the indentation and wrinkling problems in the forming process, the online real-time detection fast
approximation gradually bending method which can quickly solve the springback problem of hull plate forming and
make sure the accuracy and the software and hardware integration control system which can realize the digital
technology and automation of the CNC bending machine. The 3D CNC bending machine can solve the high-cost
problem of overall die and the wrinkling and the indentation problem of the multi point forming technology, whose
effectiveness and reliability can be verified through the sail plate and the saddle plate cold bending forming