| Project/Area Number |
13650124
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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 | Kumamoto University |
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Principal Investigator |
YASUI Heiji FACULTY OF ENGINEERING PROFESSOR, 工学部, 教授 (30040398)
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| Co-Investigator(Kenkyū-buntansha) |
SAKATA Masato FACULTY OF ENGINEERING ASSISTANT, 工学部, 助手 (20040652)
SAKAMOTO Shigehiko FACULTY OF ENGINEERING LECTURER, 工学部, 講師 (00315285)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | Fine ceramics / Ultra-Smoothness Grinding / Ductile-mode Grinding / High Removal Rate / Diamond wheel / Coarse Grain / Grinding wheel Surface / Grinding Condition / 研磨レス研削 / ナノメータ / ファインセラミック / ダイヤモンド砥石 / 粗粒ダイヤモンド砥粒 |
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| Research Abstract |
The research is done for the aims of building the high removal ultra-smoothness grinding technique of fine ceramics with coarse grain size diamond wheel. In the present research, first of all, by using silicon carbide ceramic, the mechanism of ultra-smoothness grinding with coarse grain diamond wheel is investigated experimentally and theoretically. The experiments are carried out with NC surface grinder. The bond, concentration and grain size of diamond wheel used are metal, 100 and #140, respectively. On the basis of the result, the existing of limiting smoothness, which can attain in traverse grinding is discussed theoretically and presented experimentally. Furthermore the newly devised ultra-smoothness grinding method is proposed and ascertained to be useful for finishing to near the ultra-smoothness surface.
The main conclusions obtained using the new ultra-smoothness grinding method are as follows;
(1) The surface roughness of silicon carbide ceramic formed by the ultra-smoothness grinding method using #140 diamond wheel is found to attain below 10nm(Ry) or 2nm(Ra).
(2) The surface roughness of silicon nitride ceramic and alumina-titanium carbide ceramic is somewhat worse than silicon carbide ceramic though it attains to near the ultra-smoothness surface too.
(3) In the cemented carbide without fine ceramics, the surface roughness attains below 30nm(Ry) or 4nm(Ra).
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