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论文类型：期刊论文

发表时间：2009-01-01

发表刊物：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

收录刊物：SCIE、EI

卷号：23

期号：1

页面范围：246-253

ISSN号：1738-494X

关键字：Heterogeneous; CAD; Constraint; Data exchange; Feature

摘要：Data exchange between heterogeneous CAD systems is the key problem in the field of CAD, and the popular solution to this problem is a feature-based method. Aiming at keeping the consistency of design intent in data exchange between heterogeneous CAD systems, this research focuses on the method of constraint conversion. First, two kinds of basic feature transformation ways are summarized, and this is the foundation of constraint conversion. Second, a novel identification of geometric elements based on the improved geometric certificate is proposed, and the identifier of geometric element is used to recognize the acting object of constraint. Third, the principles of constraint conversion are put forward, and the method of constraint conversion for a single feature is proposed according to the principles. Fourth, an algorithm of constraint conversion for the whole process of CAD data exchange is designed. Finally, the contrast experiment of CAD data exchange is completed, and the result of the experiment shows that the approach mentioned above is effective.