To promote further technological innovation for aeronautic industry and improve the conventional aircraft sheet metal forming process with information technology, a system of case-based knowledge base for aircraft sheet metal forming was developed by using Oracle database management system and Visual ��C+ +��.NET. It is based upon a great deal of data and information from the aircraft manufacturing, pre-research, sheet metal forming manual and process tests in aeronautic industry. This system establishes a uniform information model of process cases as elementary cells of information. It includes a lot of data and information about forming processes and dies, and has functions such as the knowledge maintenance, the knowledge matching, the knowledge revise and so on. The general structure, key techniques and solution methods of this system were also analyzed.
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