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  • Summary & Details

Proposal of Reducing Press Working Load and High Accurate Evaluation of Springback Error in Bending Automobile Sheet Metal

自動車用高張力鋼板の曲げにおける高精度化と加工力低減の提案

Detailed Information

Category(J)生産・加工

Translation

Author(J)1) 西野 創一郎, 2) 大屋 邦雄, 3) 正木 郁也, 4) 成石 圭輔, 5) 鈴木 秀人
Author(E)1) Souichiro Nishino, 2) Kunio Ohya, 3) Ikuya Masaki, 4) Keisuke Naruishi, 5) Hideto Suzuki
Affiliation(J)1) 茨城大学, 2) PSG, 3) 茨城大学, 4) 茨城大学, 5) 茨城大学
Affiliation(E)1) Ibaraki Univ., 2) PSG Co.,Ltd., 3) Ibaraki Univ., 4) Ibaraki Univ., 5) Ibaraki Univ.
Abstract(J)軽量化と安全性向上のニーズから使用頻度が高まっている高張力鋼板の曲げ加工においてスプリングバックと加工力不足が大きな技術課題となっている.本研究では,曲げ加工の基本である3点曲げ試験の詳細な解析から,低加圧力で成形可能な自由曲げにおいて,スプリングバックを高精度に予測することを可能とした.

Translation

Abstract(E)Since today's automobile body needs to be both lightweight and safe, the employment of high-tensile steel for automobile parts is increasing in the manufacturing industry. Therefore, the prediction and reduction of springback error has long been a key issue for obtaining accurate shapes and dimensions in forming automobile parts. In this study, we examined the new method of predicting the shape freezing property by combining V-bending test data with Finite Element Method (FEM) simulation results. This hybrid system will help to predict the shape and dimensions of parts in advance and to determine the bending condition corresponding to material type and press capacity.

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