| Project/Area Number |
18K18804
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
NAKAMOTO Keiichi 東京農工大学, 工学(系)研究科(研究院), 准教授 (90379339)
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| Co-Investigator(Kenkyū-buntansha) |
笹原 弘之 東京農工大学, 工学(系)研究科(研究院), 教授 (00205882)
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| Project Period (FY) |
2018-06-29 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 工程設計 / フライス加工 / トポロジー最適化 / 複雑形状部品加工 / 切削加工 |
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| Outline of Final Research Achievements |
A determination method of complex workpiece shapes during a rough machining operation is proposed based on topology optimization. In the method, topology optimization is used to calculate workpiece shapes to ensure the stiffness by dividing a rough machining operation into several steps. Moreover, a determination method of cutting sequence is proposed by using the design variables obtained in the calculation process of topology optimization of workpiece. In order to estimate the machined shape based on the proposed cutting sequence, cutting experiments are conducted. The results show the effectiveness of the proposed cutting sequence to reduce the deformation of workpiece during a rough machining operation in complex parts machining.
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| Academic Significance and Societal Importance of the Research Achievements |
既に実績ある汎用性・効率性に着目すれば，切削加工は先進的な材料や創造的な形状を迅速に加工するアジャイル生産（ものづくり）に最も適した加工法と考えられる．これまで工具や加工条件など膨大な組合せのため標準化が遅れていた切削加工の工程設計において，本研究により曖昧な暗黙知を明確な形式知へと変換しながら技能の体系化を進めることで，合理的で妥当性ある工程設計が可能になれば切削加工の大きな革新となる．
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