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AssigneesMitsubishi Heavy Industries, Ltd., Aisin Keikinzoku Kabushiki Kaisha
InventorsTakahiro TACHIBANA, Jin SHINMURA, Arata YOSHIDA, Hiroaki MATSUI
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A bending method feeds a long workpiece material made of metal and having a plurality of thickness portions disposed at different angles between rollers and bends the workpiece material. An initial shape of the workpiece material is a straight line or a bend with a bend radius larger than a target bend radius, a thickness of a cross section of the workpiece material along a bend radius direction is set to increase from an inner side toward an outer side of the bend radius direction, the workpiece material is fed between the rollers and rolled in a way that an amount of rolling in a region corresponding to the outer side of the bend radius direction is larger than an amount of rolling in a region corresponding to the inner side, and the workpiece material is bent to have the target bend radius from the initial shape.
A rolling machine capable of simultaneously rolling two or more of a plurality of thickness portions of a long workpiece material made of metal in a thickness direction, the plurality of thickness portions being disposed at different angles, and the machine comprising:
A bending method that feeds a long workpiece material made of metal and having a plurality of thickness portions disposed at different angles between rollers and bends the workpiece material while rolling the workpiece material with the rollers, wherein
A workpiece material used when a long workpiece material made of metal is fed between rollers and bent while being rolled by the rollers, wherein
Dependencies are inferred from the claim text.