2015 Fiscal Year Final Research Report
Development of warm micro ultra deep drawing process based on blank material flow control with press motion and ultra high fluid pressure
| Project/Area Number |
26630369
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Material processing/Microstructural control engineering
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
FURUSHIMA TSUYOSHI 首都大学東京, 大学院理工学研究科, 助教 (30444938)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | マイクロフォーミング / 対向液圧深絞り / マイクロ超深絞り / 超高圧 / プレスモーション / 逐次成形 / 材料流動制御 / 再絞り |
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| Outline of Final Research Achievements |
The goal of study is to challenge in the development of a new warm micro-ultra-deep drawing (MUDD) process based on servo press motion control combining the hydro-mechanical pressure effect of ultra-high fluid pressure and the redrawing. In this study, the new fabrication principle of MUDD process is proposed, in which after redrawing, incremental deformation and material flow by press motion and ultra high fluid pressure can produce a high aspect ratio drawn cup. For the experimental confirmation, a high-performance MUDD system was developed with ultra-high pressure up to 400 MPa. In the simulation, MUDD process for the slenderness ratio 10 or more has achieved in case of a dynamic process. Even if there is no dynamic effect, a drawn cup of diameter 0.56mm and the slenderness ratio of about 5 is successful in FEM. In the experimental verification, a stainless steel SUS304 drawn cup with 0.5mm diameter and its slenderness ratio of 0.9 is successful in the MUDD process.
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| Free Research Field |
機械工学、塑性工学、マイクロ工学
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