Deformation property of 6063 aluminum alloy channel in the rotary draw bending.

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  • SAKAKI Shuji
    Tokyo Metropolitan Institute of Technology
  • UTSUMI Noah
    Graduate student, Tokyo Metropolitan Institute of Technology
  • TAGUCHI Ken
    Graduate student, Tokyo Metropolitan Institute of Technology [Present: YKK Co. Ltd.]
  • HASEGAWA Osamu
    Graduate school of Engineering, Tokyo Metropolitan University

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Other Title
  • ６０６３アルミニウム合金チャンネル材の回転引曲げ加工における変形特性
  • 6063 アルミニウム ゴウキン チャンネルザイ ノ カイテンヒキマゲ カコウ ニ オケル ヘンケイ トクセイ

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Abstract

Extruded sections of aluminum have many advantages for lightweight structural members. A secondary forming process, such as bending, is required when these materials are used in these parts. In this paper, we investigated deformation property of tension-side open type 6063 aluminum alloy extruded sections in the rotary draw bending process. A6063S extruded sections having various thickness applied to the workpiece of this experiment. In the rotary draw bending process of these workpieces, undesirable phenomena such as flattening distortion, compression flange wrinkling and web wrinkling arise in the same way as square tube. Flattening distortion can be restrained principally by rigid mandrel and restriction guide for web displacement. Compression flange wrinkling can be restrained by additional axial tension. As a result of this study, it has been shown that applying these restriction tools and additional axial tension are very effective in preventing undesirable deformations. The bend degree H0/R0 reaches 0.24 without any defects in this bending process, the workpiece of A6063S–O with thickness ratio H0/t0 = 26.7.

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