Fundamental researches of the joining strength mechanism research of the clinch joining to enable lightweighting structure

• Project/Area Number: 24560174
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Ishikawa National College of Technology
• Principal Investigator: KATO Toru 石川工業高等専門学校, その他部局等, 教授 (50612016)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
• Keywords: 接合 / 異種金属接合 / 生産工学 / プレス加工 / シミュレーション / 異種金属 / 塑性接合 / 破壊 / 予測式 / 塑性変形 / メカニカルクリンチング / 十字引張試験 / 接合予測

Outline of Final Research Achievements

The mechanism of strength of mechanical clinch joining was evaluated by an experiment and simulation. Mechanical clinching is expected as a substitution method of the resistance spot welding as the joining method without the heating and low cost. The relationship between joining cross-section and strength were evaluated in this study.
The method to derive a central cross-section from any section was developed to identify a correct joining cross-section. The destruction mode after the joining was considered to be two kinds of an upper sheets break and the interlock separation, but two kinds of destruction modes were confirmed in interlock separation. The break load of upper sheet was devised using an expression to lead a central cross-section by the findings of the correlation of joining section and breaking strength.

Research Products

• [Presentation] 板鍛造加工による異種金属接合の開発 (2015)
  • Author(s): 加藤亨，林寛文
  • Organizer: 塑性加工学会北陸支部 第24回講演会
  • Place of Presentation: 福井大学文京キャンパス
  • Year and Date: 2015-03-09
• [Presentation] メカニカルクリンチングを用いたアルミ合金板接合における十字引張強度の予測 (2014)
  • Author(s): 加藤亨 大垣内康平
  • Organizer: 日本塑性加工学会北陸支部第23回講演会
  • Place of Presentation: 金沢工業大学
• [Remarks] メカニカルクリンチングを用いたアルミ合金板同士の接合における十字引張強度の予測
  • URL: http://www.m.ishikawa-nct.ac.jp/laboratory/kato/H2501.pdf
• [Remarks] メカニカルクリンチングの接合性の予測
  • URL: http://www.m.ishikawa-nct.ac.jp/laboratory/kato/H2401.pdf
• [Remarks] メカニカルクリンチングの接合性の予測
  • URL: http://www.m.ishikawa-nct.ac.jp/laboratory/kato/H2401.pdf