フレキシブル溝形断面の成形における各ひずみ成分の挙動

書誌事項

タイトル別名
  • On Behavior of Strains of Strip in Forming a Flexible Channel Section
  • フレキシブル ミゾガタ ダンメン ノ セイケイ ニ オケル カクヒズミ セイブン ノ キョドウ : フレキシブル レイカン ロール セイケイ キカイ ノ カイハツ
  • ―Development of a Flexible Cold Roll Forming Machine ―
  • ― フレキシブル冷間ロール成形機械の開発 ―

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抄録

Products formed using a conventional cold-roll forming machine have cross-sectional profiles constrained to a single width along the longitudinal axis. Products with cross-sectional profiles varying in width in the longitudinal direction, namely, flexible cross sections, cannot be formed using a conventional cold-roll forming machine. In recent years, research and development of a flexible cold roll forming machine controlled by a Progressive Logic Controller (PLC) Unit to form products with flexible cross sections has been carried out in Japan and Europe. In 2011, we presented a forming method for several flexible channel sections and shape defects such as swell distortion, and edge buckling occurred during forming with this machine. In this study, the deformation process of strips in forming a flexible channel section with different widths using a four tandem flexible cold roll forming machine has been experimentally investigated from the relationship between the shape of blank sheets and the strain produced during passage through rolls. A flexible channel section is formed from a blank steel sheet of 0.5 mm thickness with the flexible edge lines. Moreover, the distribution of membrane strains and principal strains occurring at the flange and the web part during the forming of the flexible product are measured using a strain gauge. From these measurements, the mechanism of the occurrence of the swell distortion is clarified.

収録刊行物

  • 塑性と加工

    塑性と加工 53 (620), 842-846, 2012

    一般社団法人 日本塑性加工学会

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