面向网络的组合夹具虚拟装配技术研究  

Research on Web-oriented Virtual Assembly Technologies of Modular Fixture

作　　者：瞿畅[1] 魏园园[1] 王君泽[1] 邓婕[1] 

机构地区：[1]南通大学,南通226019

出　　处：《中国机械工程》2013年第15期2060-2065,共6页China Mechanical Engineering

基　　金：江苏省科技成果转化专项资金资助项目(BA2009079);南通市科技公共服务平台项目(DE2010003)

摘　　要：为了实现网络环境下的组合夹具虚拟装配,构建了具有五层结构的夹具元件层次信息模型,提出了一种基于层次包围盒体树的碰撞检测与装配约束交互匹配的虚拟装配技术。运用二叉树分解法划分模型空间构造层次包围盒,开发了碰撞检测算法,实现了网络环境下夹具元件的干涉检查和穿刺深度计算;通过提取夹具元件功能表面的装配约束特征,交互匹配调整其空间位姿,快速实现元件的精确定位和虚拟装配仿真。开发了组合夹具网络虚拟装配平台,通过实例验证了装配技术的可行性。该方法能满足网络虚拟装配的实时性和交互性要求,为进一步研究组合夹具异地协同组装设计奠定了基础。In order to realize virtual assembly of modular fixture in network environment, the five -layer hierarchical information models of modular fixture elements were created. The virtual assembly technologies were put forward, including collision detection based on hierarchical bounding box trees and interactive assembly constraint matching. The hierarchical bounding boxes by partitioning model with binary tree were constructed. And a collision detection algorithm based on network was developed to detect interference and to compute the puncture depth. The assembly features of fixture elements can be captured from their functional surfaces and be matched interactively to adjust the position and orientation. And then the precise location and virtual assembly simulation of fixture elements were implemented rapidly. A web-based interactive virtual assembly platform of modular fixture was developed and examples were given to verify the feasibility of the above-mentioned assembly technologies. The applications show that the technologies satisfy the requirements of the real- time and interactive Web-oriented virtual assembly, and they are the foundation of collaborative assembly design of modular fixture.

关 键 词：虚拟装配 层次信息模型 干涉检查 组合夹具 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]