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Title:
PRESS MOLDING METHOD, RIGIDITY-IMPROVED-POSITION SPECIFYING METHOD, PRESS-MOLDING SYSTEM, AND PRESS-MOLDED PRODUCT
Document Type and Number:
WIPO Patent Application WO/2019/150933
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a press molding method with which it is possible to efficiently suppress springback and with which it is possible to easily specify the position where a large springback-reduction effect owing to rigidity improvement can be obtained. A press molding method that is used in press-molding a molded product of a predetermined shape from a plate-shaped material includes: a first step in which a springback analysis performed using an analysis model, on which processing for virtually improving the rigidity by restraining expansion-and-contraction deformation at a specific position of a molded product model having the predetermined shape while allowing rotation thereof has been performed, is repeatedly performed while changing the restraining position to specify the position where a large springback-reduction effect owing to rigidity improvement can be obtained; a second step in which a rigidity improvement measure is applied to the position, on the plate-shaped material, corresponding to the position on the molded product model specified in the first step; and a third step in which the press-molded product is press-molded from the plate-shaped material to which the rigidity improvement measure has been applied.

Inventors:
KARIYAZAKI Yuta (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
FUJII Yusuke (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:
JP2019/000889
Publication Date:
August 08, 2019
Filing Date:
January 15, 2019
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
B21D22/00; B21D22/26
Attorney, Agent or Firm:
GINZA MARONIE P.C. (Kobikikan Ginza Bldg, 8-9 Ginza 2-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
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