| Project/Area Number |
12650127
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
機械工作・生産工学
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| Research Institution | Kanagawa University |
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Principal Investigator |
AOKI Isamu Kanagawa University, Faculty of Engineering, Professor, 工学部, 教授 (30011159)
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| Co-Investigator(Kenkyū-buntansha) |
SASADA Masahiro Kanagawa University, Faculty of Engineering, Research Associate, 工学部, 助手 (80333152)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2001: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2000: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Micro cutting / Micro forming / Miniature end mill / Oblique mill / Medical element / Medical forceps / Counter plan for burr / Roughness analysis / 切削抵抗 / 切削面粗さ |
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| Research Abstract |
The aim of this study is development of system to create medical parts with complicated and detailed shapes. Generally, the end mill is used for fabricating such shapes. In particular, The minimum size of commercial end-mills is 0.1 mm, and 0.06 at the research level. I thus proposed the oblique-cut mill. This tool has a very simple shape made by diagonally cutting a cylindrical tool material. One drawback of this tool is its poor cutting ability. In this study, the optimum cutting conditions were therefore investigated.
1. As the result of observation of cutting phenomena by CCD- type microscope, the poor cutting ability due to plastic deformation of material and low chip removal rate are known.
2. An optimum oblique angle is about 30 degree from the point of view or cutting resistance and chip removal.
3. The roughness of cut surface is experimentally and theoretically analyzed. Surface roughness becomes lower in case of small oblique angle and small feed rate applied.
4. The counter plan preventing from large burr generated at cut surface is considered. It is known that by optimizing feed rate, repeated cutting and tool path burr drastically diminished.
5. New micro cutting system is developed and it was confirmed that the 15-25 μm oblique-cut mill is effective for fabricating micro groove and three-dimensional shapes such as medical forceps. An ordinary miniature end mill of 0.2 mm diameter can assist above fabrication.
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