关键词: 虚拟装配, 计算机辅助设计, 信息转换, 可扩展标记语言

Abstract:

To realize the information transformation between CAD and XNA virtual environment, an information transformation method of the model was proposed. Firstly, a hierarchical assembly information model for virtual assembly was constructed, which consisted of six hierarchy layers, including product layer, assembly layer, part layer, feature layer, geometry layer, triangle facet layer. Secondly, based on the information separation method, the model information was divided into geometry information, assembly information, facet information and other information, and the assembly information was extracted by Pro/ToolKit secondary development tool, then with the transformation of model facet information, the information transformation between the CAD and XNA was solved. Finally, a virtual assembly platform in the XNA was developed by programming, and a real assembly example was held to verify this method.

Key words: virtual assembly, computer aided design(CAD), information transformation, extensible markup language(XML)