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公开(公告)号：US20230234117A1
公开(公告)日：2023-07-27
申请号：US18129595
申请日：2023-03-31
Applicant: Amada Co., Ltd.
Inventor： Taishi SUZUKI , Koutaku MIURA , Makoto AOKI
CPC classification number: B21D5/02 , B21D5/006 , B30B15/007
Abstract: A crowning method is applied to a bending process by a press brake comprising an upper table and a lower table as being vertically opposed to each other, wherein the lower table comprises slits respectively opened in right and left directions, to bend a workpiece put and deviated rightward or leftward on the lower table so as to extend the workpiece over at least one of upper portions of the slits, the crowning method comprising: deforming end sides of the upper portions of the slits of the lower table so as to warp the one of the upper portions upward to carry out a crowning regulation.
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