BENT MEMBER AND METHOD FOR MANUFACTURING SAME

A curved-part forming method includes a bending process in which blanks 1 and 2 having a curved outline corresponding to a curve of a curved part 30 in a longitudinal direction is bent into a sectional shape corresponding to a division portion of a sectional shape of the curved part, and a joining p...

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Main Authors HIGAI, Kazuhiko, FUTATSUKA, Takayuki, YAMASAKI, Yuji, FUJITA, Takeshi, TAMAI, Yoshikiyo, HIRA, Takaaki
Format Patent
LanguageEnglish
French
German
Published 18.04.2018
Subjects
BUILDING
BUILDING MATERIALS
FIXED CONSTRUCTIONS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
STRUCTURAL ELEMENTS
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:A curved-part forming method includes a bending process in which blanks 1 and 2 having a curved outline corresponding to a curve of a curved part 30 in a longitudinal direction is bent into a sectional shape corresponding to a division portion of a sectional shape of the curved part, and a joining process in which two (or three of more) portions 10 and 20 obtained by the bending process are joined together. In a conventional forming method, when single high-strength steel sheets are used are materials, forming into desired curved parts cannot be achieved by one-piece press forming; or, when single low-strength steel sheets are used as materials, forming into curved parts can be achieved, but the parts lack strength. Therefore, the parts have insufficient strength, as a result of which weight is increased due to an increase in the number of reinforcing parts.
Bibliography:Application Number: EP20100820735