Thick plate part deep-U-shaped rolling bending die structure

A thick plate part deep-U-shaped rolling bending die structure comprises an upper base plate, a terrace die, a roller, a recessed die, a recessed die fixing plate, a jacking device, a support rod, a location pin, a stopping block and a lower base plate. The terrace die is fixed on the upper base plate, the roller is installed in the recessed die, the stopping block is installed at the end of the recessed die, the recessed die is installed in a recessed die fixing plate cavity, the recessed die is fixed on the side of the recessed die fixing plate through a screw, the location pin is fixed on the jacking device which is installed in a recessed die cavity, and the support rod is installed in the lower base plate. The sliding friction is changed to be rolling friction, friction resistance of parts in the deformation process is greatly reduced, part friction heating condition is reduced, the parts are fully lubricated in the deformation process, flow accumulation caused by the peeling effect and the bonding effec