技术领域technical field
本发明属于结构设计、数字化技术技术领域，涉及一种机翼整体翼肋三维模型快速生成方法。The invention belongs to the technical field of structural design and digitization, and relates to a method for quickly generating a three-dimensional model of an integral wing rib.
背景技术Background technique
大型飞机的机翼整体翼肋，在结构上的设计特征主要包括剪切角片、缘条、支柱、腹板、长桁缺口、开孔及补强等，这些特征在一定的范围内具有系列化的特点，且在不同的肋位上，翼肋零件的结构形式也大致相同，具有相似的设计特征。而且，翼肋结构件尺寸和加工面较多，其三维模型的构建是一项技术含量较高而又复杂繁琐的工作，如果建模流程不清晰，很容易造成零件的三维建模过程尺寸管理混乱、建模过程冗长，给后期校对和更改带来很大的困难。此外，目前在CATIA中翼肋模型的构建和过程元素的命名完全依靠设计人员手动完成，面临大量的重复性建模操作，严重影响工作效率。因此，研究针对机翼翼肋的三维快速建模技术，对于提高结构设计效率，改善模型的修改和维护性，具有重要的应用意义。The structural design features of the overall wing rib of a large aircraft mainly include shear angles, flanges, struts, webs, stringer notches, openings, and reinforcements. These features have a series of features within a certain range. The structural form of the wing rib parts is roughly the same at different rib positions, and has similar design features. Moreover, there are many sizes and processing surfaces of the wing rib structure, and the construction of its 3D model is a highly technical and complicated work. If the modeling process is not clear, it is easy to cause the size management of the 3D modeling process of the part. The confusion and lengthy modeling process bring great difficulties to later proofreading and modification. In addition, currently in CATIA, the construction of the rib model and the naming of the process elements are completely done manually by the designer, facing a large number of repetitive modeling operations, which seriously affects the work efficiency. Therefore, research on the 3D rapid modeling technology for wing ribs has important application significance for improving the efficiency of structural design and improving the modification and maintainability of the model.
目前，解决此类问题的主要途径是对CATIA软件进行适应性二次开发，建立相应的快速建模工具，实现模型的自动化、快速化、规范化建立。经检索，虽然当前国内在航空领域发表和公开的论文、专利对CATIA二次开发技术有部分介绍，但是多为综述性质，涉及具体零部件特别是完整的实现机翼翼肋这种复杂零件所有设计特征的自动化、快速化、规范化快速建模技术的研究，则鲜有报道，暂无相关文献和专利对此进行详细介绍。At present, the main way to solve such problems is to carry out adaptive secondary development of CATIA software, establish corresponding rapid modeling tools, and realize the automatic, rapid and standardized establishment of models. After searching, although the papers and patents published and published in the aviation field in China currently have some introductions to the CATIA secondary development technology, most of them are in the nature of a review, involving specific parts, especially the complete realization of all designs of complex parts such as wing ribs There are few reports on the automatic, rapid and standardized rapid modeling technology of features, and there are no relevant literature and patents to introduce it in detail.
发明内容Contents of the invention
本发明的目的在于：针对大型飞机机翼整体翼肋，提出了一种三维几何模型的自动化、快速化、规范化建模方法。The purpose of the present invention is to propose an automatic, rapid and standardized modeling method for a three-dimensional geometric model for the integral rib of a large aircraft wing.
本发明的技术方案是：一种机翼整体翼肋三维模型快速生成方法，包括以下步骤：The technical scheme of the present invention is: a kind of rapid generation method of three-dimensional model of wing integral wing rib, comprises the following steps:
(1)翼肋零件系列化特征的自动生成：(1) Automatic generation of serialized features of wing rib parts:
将整体翼肋结构按形状特点进行分解，将翼肋表示为结构特征的集合，对分解后的特征参数进行统一的外部存储，通过调用外部参数数据和梁平面、肋平面、机翼基准平面、长桁基准面等机翼布置骨架模型，在CATIA中自动生成翼肋三维数模；The overall rib structure is decomposed according to the shape characteristics, and the rib is represented as a collection of structural features, and the decomposed characteristic parameters are uniformly stored externally. By calling the external parameter data and the beam plane, rib plane, wing reference plane, The skeletal model of the wing layout such as the long truss datum plane is automatically generated in CATIA in the three-dimensional digital model of the wing rib;
(2)翼肋三维模型生成的流程化实现：(2) Process realization of 3D model generation of wing rib:
分析翼肋三维建模的逻辑关系，提出采用“由外向内”的建模原则，按剪切角片-缘条-腹板-支柱等顺序，将翼肋各设计特征的生成过程固定化、流程化，实现不同肋位处翼肋零件的快速建模；Analyzing the logical relationship of the 3D modeling of the wing rib, it is proposed that the modeling principle of "from outside to inside" be adopted, and the generation process of each design feature of the wing rib be fixed, Streamlined to realize rapid modeling of wing rib parts at different rib positions;
(3)三维模型设计特征及过程元素的规范化管理及命名：(3) Standardized management and naming of 3D model design features and process elements:
分析翼肋三维模型的几何特征与拓扑关系，提出采用按“特征-元素-属性-名称”的原则，对各设计特征建模过程中的元素进行分层次、规范化管理；在元素命名时，采用“基于操作过程”的命名原则，方便设计人员对过程元素进行追踪与查找；Analyzing the geometric features and topological relationship of the 3D model of the wing rib, it is proposed to use the principle of "feature-element-attribute-name" to carry out hierarchical and standardized management of the elements in the modeling process of each design feature; when naming the elements, use The naming principle of "based on the operation process" is convenient for designers to track and find process elements;
本发明的有益效果是：The beneficial effects of the present invention are:
通过机翼整体翼肋三维快速建模方法的应用，使得翼肋零件的建模流程清楚，各设计特征和过程元素的命名规范、清晰，非常易于识别和读取，对于后期的校对和参数修改工作，提供了方便，且大大减少了设计人员的重复性建模工作，提高了结构设计人员的建模效率，使设计人员将更多精力集中在强度校核或参数优化方面。该发明成果在多个型号研制中的应用效果十分明显。Through the application of the 3D rapid modeling method of the overall wing rib, the modeling process of the wing rib parts is clear, the naming of each design feature and process element is standardized and clear, and it is very easy to identify and read, which is useful for later proofreading and parameter modification It provides convenience and greatly reduces the repetitive modeling work of designers, improves the modeling efficiency of structural designers, and enables designers to focus more on strength checking or parameter optimization. The application effect of this invention in the development of multiple models is very obvious.
附图说明Description of drawings
图1为本发明实现的流程示意图。Fig. 1 is a schematic flow chart of the realization of the present invention.
具体实施方式detailed description
下面结合附图对本发明的具体实施方式做进一步说明。The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
以某型飞机机翼翼肋三维建模为对象开展实例研究，实现翼肋零件的快速建模。Taking the 3D modeling of wing rib of a certain type of aircraft as an example study, the rapid modeling of wing rib parts is realized.
(1)翼肋零件系列化特征的自动生成：(1) Automatic generation of serialized features of wing rib parts:
将整体翼肋结构按形状特点进行分解，表示为剪切角片、缘条、腹板、支柱、长桁缺口等结构特征的集合，将分解后的各特征参数统一的外部存储于Excel数据表中，运行CATIA软件，将快速建模需要的机翼布置骨架模型，分别放置于“外部参考”和“输入”两个几何图形集中，并对所需的原始输入命名。运行快速建模工具，通过调用外部参数数据和梁平面、肋平面、机翼基准平面、长桁基准面等机翼布置骨架模型，在CATIA中自动生成翼肋结构的三维数模；Decompose the overall wing rib structure according to the shape characteristics, and express it as a collection of structural features such as shear angles, flanges, webs, pillars, long truss gaps, etc., and store the decomposed characteristic parameters in an Excel data table uniformly , run the CATIA software, place the wing layout skeleton model required for rapid modeling, respectively, in the two geometric graphics sets of "external reference" and "input", and name the required original input. Run the rapid modeling tool, and automatically generate a three-dimensional digital model of the wing rib structure in CATIA by calling external parameter data and wing layout skeleton models such as beam plane, rib plane, wing reference plane, and stringer reference plane;
(2)翼肋三维模型生成的流程化实现：(2) Process realization of 3D model generation of wing rib:
分析翼肋三维建模的逻辑关系，采用“由外向内”的建模原则，按剪切角片-缘条-腹板-支柱-长桁缺口等顺序，将翼肋各设计特征的生成过程固定化、流程化，并通过调用存储于外部的不同肋位处的参数数据，分别生成各设计特征，实现不同肋位处翼肋零件的快速建模；Analyze the logical relationship of the 3D modeling of the wing rib, adopt the modeling principle of "from outside to inside", follow the sequence of shear angle piece-edge strip-web plate-pillar-long stringer notch, etc., and make the generation process of each design feature of the wing rib Fixed and streamlined, and by calling the parameter data stored in different rib positions externally, each design feature is generated separately, so as to realize the rapid modeling of wing rib parts at different rib positions;
(3)三维模型设计特征及过程元素的规范化管理及命名：(3) Standardized management and naming of 3D model design features and process elements:
分析翼肋各设计特征三维模型的几何特征与拓扑关系，采用按“特征-元素-属性-名称”的原则，对剪切角片、缘条、腹板、支柱、长桁缺口等特征及建模过程中的元素进行分层次、规范化管理；采用“基于操作过程”的命名原则，按各元素的操作信息体现于元素名称中，对过程元素进行规范化命名，实现元素的追踪与查找。Analyze the geometric features and topological relationship of the 3D model of each design feature of the wing rib, and use the principle of "feature-element-attribute-name" to analyze the features and construction The elements in the modeling process are hierarchically and standardizedly managed; the naming principle of "based on the operation process" is adopted, and the operation information of each element is reflected in the element name, and the process elements are standardized to name the elements, so as to realize the tracking and searching of elements.
(4)翼肋快速建模工具开发：(4) Development of wing rib rapid modeling tools:
进一步的，可以对翼肋建模过程中使用的CATIA各功能模块和操作进行解析，分析各类操作(如曲面偏移、厚曲面、投影、实体分割等)的关键参数控制，使用VB语言对CATIA进行二次开发，设计各步操作的功能模块，开发了机翼整体翼肋的快速建模工具，快速建立翼肋零件的三维几何模型，并实现各设计特征和元素的分层管理和规范命名。Further, it is possible to analyze the functional modules and operations of CATIA used in the rib modeling process, analyze the key parameter control of various operations (such as surface offset, thick surface, projection, solid segmentation, etc.), and use VB language to CATIA carried out secondary development, designed the functional modules of each step of operation, developed a rapid modeling tool for the overall wing rib, quickly established the 3D geometric model of the wing rib parts, and realized the hierarchical management and specification of each design feature and element name.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535797.5ACN105488240A (en) | 2014-10-11 | 2014-10-11 | Rapid generating method for three-dimensional model of integral wing rib |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535797.5ACN105488240A (en) | 2014-10-11 | 2014-10-11 | Rapid generating method for three-dimensional model of integral wing rib |
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| CN201410535797.5APendingCN105488240A (en) | 2014-10-11 | 2014-10-11 | Rapid generating method for three-dimensional model of integral wing rib |
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