BENT MEMBER MANUFACTURING METHOD, BUMPER REINFORCEMENT MANUFACTURING METHOD AND BENDING APPARATUS, AND BUMPER REINFORCEMENT MANUFACTURING APPARATUS

WIPO Patent Application WO/2010/050059

A1

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).

JPS5577932	PIPE OR CONTOUR BENDING DEVICE
JP2566049	PROBLEM TO BE SOLVED: To bend a multi-tube
JP5255648	Bending member manufacturing method, bumper reinforcement manufacturing method, bending equipment and bumper reinforcement manufacturing equipment

ARAKAWA MASAO (JP)

PCT/JP2008/069936

May 06, 2010

October 31, 2008

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NIKKEIKIN ALUMINIUM CORE TECH (JP)
ARAKAWA MASAO (JP)

B21D9/07

JPH0533914U	1993-05-07
JPH06142805A	1994-05-24
JP2002239639A	2002-08-27

ISONO, Michizo (JP)
Michizo Isono (JP)

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