Title:
BENT MEMBER MANUFACTURING METHOD, BUMPER REINFORCEMENT MANUFACTURING METHOD AND BENDING APPARATUS, AND BUMPER REINFORCEMENT MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/050059
Kind Code:
A1
Abstract:
This bent member manufacturing method uses a core at the time of bending a hollow section and can set an applicable bending radius or bending center axis over a wide range. A core (41) is inserted into the hollow portion of a hollow section (A) for the material of a bent member (B). A finishing face (4A) formed on the side face of the core (41) is positioned in a first bent area (M1) formed at the starting end portion of a working target area (M). In this state, the first bent area (M1) is subjected to a bending work so that an outer edge portion (A2) of the first bent area (M1) is worked into a shape along the finishing face (4A) of the core (41). The core (41) is moved to the trailing end side of the working target area (M), and the finishing face (4A) of the core (41) is positioned in a second bent area (M2) positioned adjacent to the first bent area (M1). In this state, the second bent area (M2) is subjected to a bending work so that the outer edge portion (A2) of the second bent area (M2) is worked into a shape along the finishing face (4A) of the core (41).
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Inventors:
ARAKAWA, Masao (2-20, Higashi-shinagawa 2-chome, Shinagawa-k, Tokyo 02, 14000, JP)
Application Number:
JP2008/069936
Publication Date:
May 06, 2010
Filing Date:
October 31, 2008
Export Citation:
Assignee:
NIKKEIKIN ALUMINIUM CORE TECHNOLOGY COMPANY, LTD. (2-20, Higashi-shinagawa 2-chome Shinagawa-k, Tokyo 02, 14000, JP)
日軽金アクト株式会社 (〒02 東京都品川区東品川２丁目２番２０号 Tokyo, 14000, JP)
日軽金アクト株式会社 (〒02 東京都品川区東品川２丁目２番２０号 Tokyo, 14000, JP)
International Classes:
B21D9/07
Attorney, Agent or Firm:
ISONO, Michizo (Sabo Kaikan Annex 7-4, Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, 10200, JP)
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