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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING STRETCH FLANGE MOLDED COMPONENT
Document Type and Number:
WIPO Patent Application WO/2016/203904
Kind Code:
A1
Abstract:
The present invention suppresses stretch flange breakage when manufacturing a stretch flange molded component manufactured with stretch flange molding. Provided is a manufacturing method that manufactures the stretch flange molded component provided with a top plate part (3) that has a first recessed outer peripheral edge part (3a) and a flange part (7) that is continuous with a vertical wall part (5), curved to a top plate part (3) side, and has a second recessed outer peripheral edge part (7a), wherein a step shaped part (8) is formed curved in the direction of the plate thickness with a crest line (9) extending along the second recessed outer peripheral edge part (7a) so as to surround the second recessed outer peripheral edge part (7a) in a position which becomes the flange part (7).

Inventors:
MIYAKE Hiroto (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
SHINMIYA Toyohisa (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
SATO Kentaro (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
YAMASAKI Yuji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2016/065154
Publication Date:
December 22, 2016
Filing Date:
May 23, 2016
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
B21D19/08; B21D22/26; B21D53/88
Attorney, Agent or Firm:
MORI Tetsuya et al. (NICHIEI Patent and Trademark Attorneys, Shiroyama Trust Tower 32F 3-1, Toranomon 4-chome, Minato-k, Tokyo 32, 〒1056032, JP)
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