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• 智能设计与数字化设计 • 上一篇    下一篇

基于复杂装配体特征抑制的轻量化方法

  

  1. (1. 合肥工业大学机械工程学院，安徽 合肥 230009；2. 阳光电源股份有限公司，安徽 合肥 230088)
  • 出版日期:2019-10-31 发布日期:2019-11-06
  • 基金资助:
    国家自然科学基金项目(51775159)

Lightweight Method Based on Complex Assembly Feature Suppression

  1. (1. School of Mechanical Engineering, Hefei University of Technology, Hefei Anhui 230009, China;
    2. Sungrow Power Supply Co., Ltd., Hefei Anhui 230088, China)
  • Online:2019-10-31 Published:2019-11-06

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摘要： 针对大型复杂三维模型加载速度慢，装配体在装配时由于零部件众多导致装配效 率低的问题，提出一种基于装配体特征抑制的轻量化方法。在充分分析装配体组织结构的基础 上，给出装配约束父子关系以及特征路径提取思路，以保留装配接口为前提，首先采用无关零 部件抑制、按体积抑制比抑制、微小特征抑制等方法，实现复杂装配体的轻量化表示；然后提 出特征恢复技术，实现轻量化模型的特征还原；最后以 Creo 2.0 为二次开发平台，结合 MFC 对话框技术开发出一套装配体轻量化系统，并应用于企业产品模型测试。实验结果表明，利用 该系统得到的轻量化模型简化效果明显，模型数据量大大减小，不仅加快了模型加载速度，而 且提高了装配效率。

关键词: 装配接口, 轻量化方法, 特征抑制, 特征还原, 对话框

Abstract: Aiming at the problems of the slow loading speed of large complex 3D models and the low assembly efficiency due to the large number of components during assembly, an lightweight method based on feature suppression of assembly is proposed. Based on a thorough analysis of the assembly structure and the retention of the assembly interface, a method of breaking the parent-child relationship of assembly constraints and the idea of feature path extraction were proposed. Firstly, a lightweight representation of a complex assembly is realized by means of irrelevant component suppression, suppression according to volume suppression ratio, slight feature suppression. Then, a feature restoration technology is put forward to achieve feature restoration of the lightweight model. Finally, Creo 2.0 is taken as a secondary development platform which combined with MFC dialog technology to develop an assembly lightweight system for enterprise product model testing. Experimental results show that the lightweight model obtained by the system has obvious simplification effect, and the amount of model data is greatly reduced. It not only accelerates the loading of the model, but also improves assembly efficiency.

Key words:  assembly interface, lightweight method, feature suppression, feature restoration, dialog