| Project/Area Number |
15K05753
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Ibaraki University |
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Principal Investigator |
Shimizu Jun 茨城大学, 工学部, 教授 (40292479)
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| Co-Investigator(Kenkyū-buntansha) |
周 立波 茨城大学, 工学部, 教授 (90235705)
小貫 哲平 茨城大学, 工学部, 准教授 (70400447)
尾嶌 裕隆 茨城大学, 工学部, 准教授 (90375361)
山本 武幸 茨城大学, 工学部, 技術職員 (40396594)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | トライボロジー / 機械工作・生産工学 / 切削 / 計算物理 / 静水圧 / バリ / 加工変質層 / 工具 |
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| Outline of Final Research Achievements |
Improving machined surface integrity is important in the precision machining. This study aims to develop a cutting tool which enables to generate a localized compressive hydrostatic stress field around the cutting point to improve the machined surface integrity by reducing unnecessary plastic deformation, and to clarify its cutting mechanism. To clarify the mechanism, a molecular dynamics simulation was conducted on an aluminum workpiece using a developed cutting tool equipped with a sliding element for giving compressive hydrostatic stress to the cutting point. As a result, remarkable reduction in burr formation around the cutting groove shoulders was successfully confirmed. Subsequently, two different cutting tools with a sliding and a rolling elements were practically developed and some cutting experiments were conducted on a pure aluminum. As a result, similar trends as the simulation results were also confirmed, particularly, the advantages in the rolling element was clarified.
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