The integration of design, analysis and manufacturing is a challenging issue in product development. Much research focuses on creating data exchange standards such as STL, IGES, EDI, and STEP etc. However, these standards are not ideal in data exchange and communication via the Web. In this paper, a unified framework based on XML was created to integrate design, analysis, and manufacturing. The structures of DTDs and XML files of geometric design, finite element analysis and NC machining were developed. Key technologies of supporting the XML-based integration and information communication, such as DOM, SAX and SOAP etc. were discussed. XML-based integration will shorten the development cycle, save costs in product development, and finally improve the competitive capability in the global competition of product development.

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