基于特征的异构全三维数字化模型转换方法研究与实现
发布时间：2019-01-22 10:10
【摘要】：针对全三维数字化定义模型在异构CAD系统间转换时会丢失特征和非几何信息的问题,综合考虑几何信息、非几何信息及二者的关联关系,提出一种基于特征的异构全三维数字化定义模型转换方法。使用可扩展标记语言对三维模型的特征信息与工程注释信息及其关联关系进行表达;以可扩展标记语言文件作为中间文件,经过信息提取和信息重构,同时转换几何特征信息和工程注释信息,并保持二者间的关联关系,实现全三维数字化定义模型在异构CAD系统间的转换;以某型号飞机的结构件为例,在Pro/E和CATIA系统间验证了方法的有效性。
[Abstract]:In order to solve the problem of the loss of feature and non-geometric information when the fully three-dimensional digital definition model is converted between heterogeneous CAD systems, the geometric information, non-geometric information and their correlation are considered synthetically. In this paper, a feature-based model transformation method for heterogeneous full-3D digital definition is proposed. Extensible markup language (EML) is used to express the feature information of 3D model and engineering annotation information. Taking the extensible markup language file as the intermediate file, the information is extracted and reconstructed, the geometric feature information and the engineering annotation information are transformed simultaneously, and the relationship between them is maintained. The conversion of fully 3D digital definition model between heterogeneous CAD systems is realized. The effectiveness of the method is verified between Pro/E and CATIA system by taking the structural parts of a certain type of aircraft as an example.
【作者单位】： 北京航空航天大学机械工程及自动化学院;中国空间技术研究院通信卫星事业部;
【基金】：工信部2016民用飞机专项科研技术研究资助项目(MJG-2016-*)~~
【分类号】：TP391.7
，
本文编号：2413123
[Abstract]:In order to solve the problem of the loss of feature and non-geometric information when the fully three-dimensional digital definition model is converted between heterogeneous CAD systems, the geometric information, non-geometric information and their correlation are considered synthetically. In this paper, a feature-based model transformation method for heterogeneous full-3D digital definition is proposed. Extensible markup language (EML) is used to express the feature information of 3D model and engineering annotation information. Taking the extensible markup language file as the intermediate file, the information is extracted and reconstructed, the geometric feature information and the engineering annotation information are transformed simultaneously, and the relationship between them is maintained. The conversion of fully 3D digital definition model between heterogeneous CAD systems is realized. The effectiveness of the method is verified between Pro/E and CATIA system by taking the structural parts of a certain type of aircraft as an example.
【作者单位】： 北京航空航天大学机械工程及自动化学院;中国空间技术研究院通信卫星事业部;
【基金】：工信部2016民用飞机专项科研技术研究资助项目(MJG-2016-*)~~
【分类号】：TP391.7
，
本文编号：2413123
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