構造部材製造方法及び構造部材製造装置

Japanese Patent JP7256379

B2

To provide a method of manufacturing structural member and a device for manufacturing structural member for efficiently manufacturing a structural member formed of a thick part on a part of a peripheral wall part forming a closed cross section.SOLUTION: A method of manufacturing structural member for manufacturing a structural member 100 formed of a thick part 102 on a part of a peripheral wall part 101 forming a closed cross section includes a thickening process of arranging a material W100 to be thickened having a thick object wall part 102W which is located on the inner side than an outer surface shape of the thick part 102 on the structural member 100 and is formed on structural member forming die D10 having an outer surface shape forming part D103, forming the outer surface shape of the structural member 100, inserting a thickening punch D15 formed corresponding to an inner side shape of the structural member 100 into the inside of the material W100 to be thickened and pressing the thick object wall part 102W against the outer surface shape forming part D103 to perform thickening and forming the thick part 102.SELECTED DRAWING: Figure 6

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Keisuke Iguchi
Masaaki Mizumura

JP2019077155A

April 12, 2023

April 15, 2019

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Nippon Steel Corporation

B21D22/02; B21C37/15; B21J5/08; B21K21/16

JP2247020A
JP2003311366A

US5517843

Sumio Tanai
Mitsuo Teramoto
Tomomasa Katsumata
Hiroshi Yamaguchi

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