Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

Takumi Nakahara

Yuki Fujita

Yoshihaya Imamura

Taiki Yamakawa

Narikazu Hashimoto

Provided are a method and a device for producing a frame structure, in which influences of both a thermal distortion due to welding and a decrease in the accuracy of the frame member itself are eliminated and high geometrical accuracy is obtained. The method for producing a frame structure includes supporting both ends of a long frame member, temporarily fixing a connecting member to somewhere along a longitudinal direction of the frame member, and final-welding the connecting member to the frame member while keeping the frame member in an elastically deformed state by imposing a bending load on an intermediate portion along the longitudinal direction of the frame member.

Method and device for producing frame structure

A method for producing a frame structure contains a hollow member having a curved and long shape, and a plurality of connecting members welded to the hollow member along a longitudinal direction of the hollow member. Each of the connecting members is welded to the hollow member, and a cooling medium is introduced into the inside of the hollow member through an end of the hollow member after the welding. The welding and the introducing are conducted repeatedly in the number of the connecting members.

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Yamaguchi, Japan

Takumi Nakahara