2007 Fiscal Year Final Research Report Summary
Study of new high-precision polishing system type for inner walls of microtubes having complex shapes by magnetic field control
| Project/Area Number |
18560121
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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 |
Production engineering/Processing studies
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| Research Institution | Toyama National College of Technology |
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Principal Investigator |
NISHIDA Hitoshi Toyama National College of Technology, Department of mechanical engineering, Professor (00390435)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMADA Kunio Fukushima university, Faculty of symbiotic systems science, Associate professor (80251883)
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| Project Period (FY) |
2006 – 2007
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| Keywords | precision polishing / magnetism / manufacturing process, production engineering / nanomachine / fluid engineering |
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| Research Abstract |
The purpose of this study is to research the polishing technology for inner walls of microtubes and capillaries having complex shapes by magnetic field control utilizing new high functional fluid (MCF) which is mixed magnetic fluid with MR fluid. In this method, an MCF containing nonmagnetic abrasive grains is allowed to pass through a tube, and a rotating magnetic field is applied perpendicular to the tube axis. The results of this study can be summarized as follows;
(1) Characteristics of polishing:
We investigated the effects of the composition of fluids containing abrasive grains and the magnetic field distribution on the polishing of the inner tube wall without the fluid effect. The polishing characteristics are affected by the concentration and the diameter of the abrasive grains, and the concentration of the iron powder.
(2) Mechanism of polishing:
The mechanism of inner tube wall polished by an MCF was clarified by observing the behavior of the abrasive grains and measuring the pressure distribution on the inner tube wall. The radial force of magnetic clusters formed at the midpoint between the elect : nodes and at the region furthest from the central axis acts on the abrasive grains to produce the force for this polishing.
(3) Basic experiment for polishing inner wall with a step and polishing by flowing
In the polishing, we filled the MCF involved abrasive particles in the inner acrylic resin tubes with different roughness. We clarified that the position of the scratch and the motion direction of the abrasive particles are important on the finishing the inner tube by the present polishing method Moreover, it was confirmed this polishing method is able to polish up to nanometer order
(4) Trial of polishing system
Polishing system for the inner walls of microtubes was made experimentally by flowing the MCF by a diaphragm pump.
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[Presentation] MCFを用いた管内面研磨に及ぼす磁場の影響2008
Author(s)
中田 貴文, 稲場 智亮, 正木 達也, 西田 均
Organizer
日本機械学会北陸信越学生会・第37回学生員卒業研究発表講演会(講演論文集・pp.163-164)
Place of Presentation
福井工業大学
Year and Date
2008-03-07
Description
「研究成果報告書概要(和文)」より
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[Presentation] 磁気機能性流体による管内面研磨に及ぼす諸因子の影響2007
Author(s)
田島 宏昭, 西田 均, 井澤 正樹, 島田 邦雄
Organizer
砥粒加工学会・北信越ハイテク加工研究分科会・2007年度研究・開発成果発表会(講演論文集, pp.23-24)
Place of Presentation
金沢工業大学
Year and Date
2007-07-06
Description
「研究成果報告書概要(和文)」より
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