关键词: 特征识别, 识别规则, 加工特征, 信息提取, 相交特征

Abstract: It is an unresolved difficult problem on CAD/CAPP field that intersection features are automatic recognized from complex feature entity model. In this paper, it proposed a new approach that intersection features are automatic recognized from a feature-based entity design model by cross-sectional profile. It gave many recognition rules and algorithms about different features. Based on this method, a new way to realize feature recognition was used. It realizing that feature information is transferred CAD system to CAPP system.

Key words: feature recognition, recognition rule, machining feature, information extraction, intersection feature