| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2005: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Research Abstract |
The manufacturing industry is increasingly dependent on digital tools, such as CAD, CAE, CAM, product data management (PDM) systems, and CNC machines to design and manufacture products. In order to keep the prepotencies in manufacturing industry for global manufacturing systems, it is necessary to establish the traceable manufacturing systems based on these digital tools, which have abilities of the resolving machining discrepancy rapidly and the judgment of the machining result validly. However, the output data from the current CAM systems cannot support the traceable manufacturing systems, because the data which consist of Traditional NC data (ISO 6983), drawings, and machining process data without relationship between them. Moreover, The NC data contain technical information implicitly. Because of this, it is impossible to manage, modify, and verify NC data, easily and avoid human error. Technical information, such as machining feature, type of machining operation and machining condition, should be integrated into one data structure with some relation between the information. In this research, the Semantic Machining Information Model that fulfills the above requirements was proposed. The Semantic Machining Information Model data were stored in XML using STEP technology, such as EXPRESS, EXPRESS-X, and Part28ed2 XML representation. The simulation system and machining system based on the Semantic Machining Information Model were also developed in this research projects.
Another important issue is the interface between traditional CAM system and proposed systems. In this research, technical information was extracted from NC code, and was transformed into a Semantic Machining Information Model which contains technical information. We demonstrated that the workingstep, basic element of the Semantic Machining Information Model, was constructed from a machining feature and machining strategy which were extracted from NC code based on a form-shaping function.
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