Abstract: To meet the rapid NC programming system for quality requirements of 3D aircraft-structure model,and to quickly identify the model defects which influenced NC programming,a novel automatic method for detecting 3D aircraft-structure model based on rule-matching was proposed.According to the structural characteristics of aircraft-structure model defects,the corresponding matching rules were concluded.By using the color-coded method,the fillet surface parameters were extracted,and a set of defects detection algorithm was proposed.An aircraft-structural model was taken as an example to verify the effectiveness of proposed method.

Key words: rapid numerical control programming system, aircraft structure parts, model defects, rule-matching, decision rules, color-coded

摘要： 为满足快速数控编程系统对飞机结构件三维CAD模型质量的要求,快速识别出模型中影响数控编程的缺陷,提出一种基于规则匹配的飞机结构件三维CAD模型自动检测方法。根据飞机结构件模型缺陷结构的特点,提取出相应的判定规则;运用颜色标识的方法快速提取过渡面参数,并提出一套模型缺陷检测算法。以某结构件模型为例,验证了该方法的可行性和有效性。

关键词: 快速数控编程系统, 飞机结构件, 模型缺陷, 规则匹配, 判定规则, 颜色标识