| Project/Area Number |
09555082
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Fukui University (1998-1999)
Fukui National College of Technology (1997) |
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Principal Investigator |
YAMADA Yasuhiro DEPT. OF MECHANICAL ENGINEERING, ASSOCIATE PROF., 工学部, 助教授 (40220412)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUTANI Jyunnosuke TOYAMA NATIONAL COLLEGE OF MARITIME TECHNOLOGY, DEPT. OF ELECTRONIC CONTROL ENGINEERING, ASSOCIATE PROF., 電子制御工学科, 助教授 (70166015)
TANABE Ikuo NAGAOKA UNIV. OF TECH. CENTRAL MACHINE SHOP, ASSOCIATE PROF., 工学部・工作センター, 助教授 (30155189)
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| Project Period (FY) |
1997 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 1999: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | Assembly / Assembly Sequence |
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| Research Abstract |
With selective assembly based on the combinatorial optimization method, a combination of parts is optimized so that high quality assembled units are obtained in a lot unit at the maximum assembly rate while dimensions of each part are referred to appropriately. The assembly method proposed in this study combines selective assembly based on a combinatorial optimization method with micro machining so as to produce high precision assembled units. This method is applied to the high precision assembly system where hole parts are combined with shaft parts. Further, micro machining used for the correction of the dimensions of the parts is taken into consideration during the optimization of the parts combination, and it is attempted to verify the performance by simulation. The quality of the assembled units is optimized while preserving the maximum assembly rate taking micro machining into account. The following findings are obtained by simulating combinatorial optimization methods of parts.
(1) This system is effective in a small lot production, where higher assembly rates can not be attained with conventional methods, in such that a higher rate is obtained if micro machining is used alongside.
(2) With the combinatorial optimization method for parts where micro machining is taken into consideration in advance, maximum micro machining dimension and maximum machining time of the parts can be greatly reduced and the number of assembled units close to the ideal state is increased.
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