• Title, Summary, Keyword: Rotational Piercing

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Improvement of Connection Force in Hydro-Embedding Process Through the Rotational Piercing of the Connection Element (하이드로 임베딩시 연결요소의 회전을 통한 체결력 개선 연구)

  • Kim, Bong-Joon;Kim, Dong-Kyu;Kim, Dong-Jin;Moon, Young-Hoon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.30 no.12
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    • pp.1503-1508
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    • 2006
  • To increase the applicability and productivity of hydroforming process, hydro-embedding process was developed by combining the hydro-forming process with embedding process simultaneously. It is necessary in the automotive parts to form hollow bodies with connection elements which combine one part with another. The hydro-embedding process is embedding the connection element hydraulically during the operating steps of the hydroforming. In this study, technique of rotational piercing is added on the existing hydro-embedding to increase the connection force of hydro-embedded element. To estimate the feasibility of new trial process, integrated researches on the hydro-embedding process technology have been performed by analyzing the deformed mode of the tubes and the optimal process parameters for various shapes of the connection elements.