基于结构预映射的产品建模

发布时间：2018-03-25 03:01

本文选题：产品建模　切入点：过程集成　出处：《机械工程学报》2017年19期

【摘要】：零件建模和装配建模是产品建模的两个方面,对制造企业的竞争力有重要影响。在当前的计算机辅助设计系统(Computer-aided design,CAD)中,尽管两者已高度集成,它们在过程层面仍然存在相互割裂的现象。为此,提出一种基于结构预映射(Structure pre-mapping,SPM)的产品建模方法。首先对产品建模过程及SPM进行系统分析,明确实现SPM需要完成的主要任务;其次,详细阐述SPM的内涵,并对其进行形式化定义,以便于在CAD系统中描述;第三,基于前期发展的装配特征偶概念,对存在于设计者头脑中的设计意图(表现为抽象配合结构和配合行为)进行系统建模,形成实现SPM的基础;第四,提出基于SPM的产品建模原理,进而展示相应的框架,并分析框架的功能模块及其实现方法;最后,通过HP发动机空气过滤器头部组件的产品建模实例论证方法的可行性。该方法可在过程层面上提高产品建模的集成程度,对于现有CAD建模理论和技术体系的丰富和发展有一定的积极意义。
[Abstract]:Part modeling and assembly modeling are the two aspects of product modeling, have an important impact on the competitiveness of manufacturing enterprises. In the current computer aided design system (Computer-aided design CAD), although the two are highly integrated, they still exist separation phenomenon in the process level. Therefore, we propose a mapping based on the structure of the pre (Structure PRE-MAPPING, SPM) of the product modeling method. First, systematic analysis of product modeling process and SPM, realize SPM needs to complete the task; secondly, expounds the connotation of SPM, and the formal definition of it, in order to facilitate the description in the CAD system; third, even the development of the concept of assembly features based on the design intent exists in the minds of the designers (represented with structure and Coordination Behaviour) of system modeling, formed the basis of the implementation of SPM; fourth, SPM are built based on the proposed Model principle, and then displays the corresponding framework, and analyzes the function module frame and its realization method; finally, the feasibility of the product modeling example demonstration for HP engine air filter head components. This method can improve the degree of integration of product modeling in the process level, there is a certain positive significance for the existing CAD modeling theory and technology system the enrichment and development.

【作者单位】：华南理工大学机械与汽车工程学院;
【基金】：国家自然科学基金(51505152,51575192) 中国博士后科学基金(2016T90780) 浙江大学CAD&CG国家重点实验室开放课题(A1508) 广东省公益研究与能力建设专项(2015A030401028)资助项目
【分类号】：TP391.72

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