Title:
CURVED CLOSED-SECTION STRUCTURAL COMPONENT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2011/034203
Kind Code:
A1
Abstract:
Provided is a method for manufacturing, only by a press forming, a polygonal closed-section structural component having a shape curved in the longitudinal direction. The method is used for manufacturing a curved closed-section structural component from two flat metal plates and has: a press forming step for forming a linear or curved fold line on a portion corresponding to the curved shape of a polygon in the longitudinal direction of a flat metal plate and forming a flange portion at least on one side of both ends in the width direction of the flat metal plate; a step in which the flange portions of the press-formed two flat metal plates and the ends without the flange portions are respectively overlapped with each other and the overlapped portions are welded in the longitudinal direction of the flat metal plate, thereby obtaining a closed-section structure; and a step in which both ends of the obtained closed-section structure are fixed by a jig and are compressed toward the central axis of the closed-section structure, thereby obtaining a polygonal closed-section structure using, as a starting point, the fold line formed in the press forming step and curved in the longitudinal direction.
Inventors:
HIGAI, Kazuhiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
樋貝和彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
FUTATSUKA, Takayuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
二塚貴之 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
TAMAI, Yoshikiyo (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
樋貝和彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
FUTATSUKA, Takayuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
二塚貴之 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
TAMAI, Yoshikiyo (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2010/066470
Publication Date:
March 24, 2011
Filing Date:
September 15, 2010
Export Citation:
Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
HIGAI, Kazuhiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
樋貝和彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
FUTATSUKA, Takayuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
二塚貴之 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
HIGAI, Kazuhiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
樋貝和彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
FUTATSUKA, Takayuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
二塚貴之 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社知的財産部内 Tokyo, 〒1000011, JP)
International Classes:
B21D51/16; B21D5/01; B21D47/01; B21D51/18
Attorney, Agent or Firm:
OCHIAI, Kenichiro (JFE TECHNO-RESEARCH CORPORATION 7th floor, Yanagiya building, 1-10, Nihonbashi 2-chome, Chuo-k, Tokyo 27, 〒1030027, JP)