| Project/Area Number |
17360063
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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 | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Kobe University |
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Principal Investigator |
SHIRASE Keiichi Kobe University, Dept. of Mechanical Engineering, Professor (80171049)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMOTO Reiichi Osaka University, Dept. of Mechanical Engineering, Assistant Professor (90379339)
SAKAGUCHI Tatsuhiko Kobe University, Organization of Advanced Science and Technoloy, Assistant Professor (00403303)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥14,730,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2007: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2006: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 2005: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | Milling process model / Voxel model / Milling simulation / Intelligent machine tool / Reactive scheduling / NC processor / CAD / CAM / CAE |
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| Research Abstract |
1. Machining shape simulator based on Voxel model
In order to predict the change of material shape during machining operation, a machining shape simulator based on the Voxel model was developed. By introducing the Oct-tree structure into the Voxel model to represent a material shape precisely, the total amount of the Voxel (memory usage of the computer) can be reduced to realize a practical machining shape simulation. Moreover. the machining shape simulation of five-axis controlled machining can be achieved successfully utilizing the feature of the Voxel model.
2. Cutting force simulator of endmilling operation
In order to predict the change of cutting force during machining operation, a cutting force simulator for endmilling operation was developed. It was verified that the predicted cutting forces in several cutting conditions have good agreement with the measured one for both the square end mill and the ball end mill. In addition, a virtual machining simulation, which shows the change
… More
of material shape and cutting force during milling operation. was achieved.
3. Process planning support system for 5-axis machine tool
In order to utilize the performance of 5-axis machine tools effectively a process planning support system, which assists to determine the suitable tool posture for 5-axis machine tools, was developed. The process planning support system is designed to perform the collision check and the tool path generation quickly by applying Voxel model expression of the material and the tooling shapes. It is verified that the suitable tool posture for 5-axis machine tools can be determined effectively.
4. Reactive scheduling utilizing for autonomous machine tool
In order to achieve flexible operation of the autonomous machine tool with a smart NC processor, a reactive scheduling system which is able to change the machining operation schedule dynamically according to the observed situation of machine tools was developed. It was confirmed that the machining operation schedule was flexibly updated to the change and the difference of operation times by the computational experiment. Less
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