When the lower roller of the three-roller bending machine clamps the plate, and the initial mission of the three-roller bending machine, when the driving force of the roller movement is not large, the lower roller can withstand huge pressure at this time. The oblique body of the machine can effectively transmit the load of the lower roller into the air. At this time, the italic has a natural self-locking function and can maintain a satisfactory clamping force until the end of the process. And because the copper sleeve sliding bearing connection is selected between the roller and the bearing, the bearing part of the roller can be planned to be larger. The diameter of the mission part of the roller is 1168mm, and the bearing part at both ends is 883mm and 922mm, which is the mission of the roller. The parts are similar. Therefore, the load-bearing capacity of the three-roller plate rolling machine is strong, and the maximum thickness of the plate that can be rolled is 220mm.

The frame of the three-roller bending machine is a casting. The thickness of the connection part between the upper roller and the lower roller and the upper roller and the side roller in the frame is very small. The copper sleeve is selected as the sliding bearing between the roller and the bearing seat. In addition, the three-roller plate rolling machine is loaded by the non-touch side of the roller when the bearing seat is rolling the sheet, and the bearing seat plan is shown in the figure. Therefore, when the sheet is rolled, the rollers can be touched at zero distance, and the smallest diameter of the workpiece can be rolled. The smallest barrel diameter that this machine can roll at the maximum standard is 1300mm, while the world's standard three-roll three-roller plate rolling machine is far from reaching this standard. The lower roll of the three-roller bending machine is controlled by the reciprocating movement of an inclined body mounted on the bearing seat of the roll.