Development of new hemming technology for joining ultra-high strength automobile parts

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420048
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Abe Yohei 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (60402658)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ヘミング / 接合 / 超ハイテン / 超高張力鋼板 / 中空部材 / 圧縮荷重 / 変形集中の防止 / プレス成形

Outline of Final Research Achievements

In this study, hollow parts having the high compressive force assembled by linearly press hemming for automobiles were developed. The forming limit of conventional hemming on joining ultra-high strength steel parts was investigated. New hemming method for prevention of deformation concentration was developed to improve the limit. The compression test of the hollow parts joined by hemming was carried out. The compressive load was measured, and the fracture mechanism was clarified. New hemming technology for joining ultra-high strength parts for automobiles was successfully developed.

Free Research Field

塑性加工学