零件语义关系几何模型及其基因编码

为完整描述零件信息，通过分析零件的静态特征构成，定义拉伸和旋转等6种特征操作算子；研究特征间的动态语义关系，得出“和约束特征”和“并约束特征”两种合理性约束特征；将两者有机结合，实现静态特征间的动态语义连接，建立基于特征造型技术的零件语义关系几何模型（Part Semantic Relationship Geometry Model，PSRGM）．根据模型树的动态生成过程以及特征编码结构，完成特征基因编码，实现零件特征序列的DNA编码．以曲轴为例，说明该方法的应用．

Part semantic relationship geometry model and gene coding

To describe part information fully,six kinds of feature operators such as PAD and SHAFT and so on are defined by analyzing constitution of static feature of parts;two reasonable constraint features AND constraint feature and OR constraint feature are obtained by studying dynamic semantic relation between features,which are combined to implement dynamic semantic connection between static features and Part Semantic Relationship Geometry Model(PSRGM) is built based on feature-based modeling technology.Accordin...