1996 Fiscal Year Final Research Report Summary
Functional Surface Modification by Forced Discharge Dispersion.
| Project/Area Number |
06555041
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
機械工作・生産工学
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| Research Institution | Toyota Technological Institute |
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Principal Investigator |
MOHRI Naotake Toyota Technological Institute, School of Engineering, Professor, 大学院・工学研究科, 教授 (90126186)
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| Co-Investigator(Kenkyū-buntansha) |
OOIZUMI Toshiro Mitsubishi Electric Corp., Nagoya Works, Mechatronics Div., Deputy Manager, 名古屋製作所メカトロ技術部, 次長
FURUYA Masanori Toyota Motor Corp., Tool Management Div., Deputy Manager, 工機管理部, 室長
FURUTANI Katsushi Toyota Technological Institute, School of Engineering, Lecturer, 大学院・工学研究科, 講師 (00238685)
TSUNEKAWA Yoshiki Toyota Technological Institute, School of Engineering, Professor, 工学部, 教授 (50148350)
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| Project Period (FY) |
1994 – 1996
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| Keywords | Electrical discharge machining / Surface modification / Structure elements / Wear resistance / Discharge dispersion / Powder mixed oil / Silicon electrode / Dot-matirix method |
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| Research Abstract |
This study aism to generate a functional surface on a work piece or on the surface of structural elements by electrical discharge machining in whch discharges are forced to disperse.
In order to disperse discharges, a doped silicon plate is used as an elctrode or silicon powder mixed oil is used as working fluid. Bundled wires are also used as the electrode for the discharge dispersion. Crack less fine surface is realized on the work piece by means of those methods. Furthermore, a thin wire electrode or a green compact electrode is used for materials accretion on a work piece. The surfaces machined with these electrodes especially with a silicon electrode have remarkable corrosion resistance. The hardness of the modified surface by a TiC green compact electrode gets more than 2000Hv and it has high wear resistance in cutting process.
Some end effecters with inch worm mechanism are developed for electrical discharge machining by use of a robot or traditional machine tools. Dot matrix type machining unit with several thin wires are used for rapid prototyping process. Millimeter order crack less machining is realized by adequate pulse distribution onto each thin wire.
It has been confirmed that the surface of a cold forging die or a cutting tool edge can be modified by these methods in practical processes.
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