基于图像辅助碰撞检测的装配干涉矩阵构建方法  

Method of Assembly Interference Matrix Based on Image-assisted Collision Detection

作　　者：徐伟 贾康[2,3] 高云龙 王永鹏 Xu Wei;Jia Kang;Gao Yunlong;Wang Yongpeng(AVIC Qing′an Group Co.,Ltd.,Xi′an 710077,China;不详)

机构地区：[1]庆安集团有限公司,西安市710077 [2]西安交通大学大学现代设计与转子及轴承系统教育部重点实验室 [3]西安交通大学机械工程学院

出　　处：《工具技术》2024年第12期160-166,共7页Tool Engineering

摘　　要：装配干涉矩阵的准确构建是进行复杂机械产品装配序列规划、路径规划的重要依据。传统的装配干涉矩阵构建采用碰撞检测对零件的离散运动扫掠体进行逐个判定,存在零件接触易误判为干涉、过小的扫掠体移动步长导致运算量大等问题。从图形渲染角度出发,提出将零件扫掠体与其他零件的干涉计算等效为图形渲染的遮挡计算问题,在OpenGL中借助渲染条件和深度测试完成计算,并针对零件接触进行像素形态的辨识算法,支持干涉矩阵元素自由、接触、硬干涉状态的判定。通过精密主轴系统的算例验证了本文算法的有效性。Accurate establishing of interference matrix is a crucial foundation for assembly sequence planning and path planning.Traditional methods perform collision detections for each discrete instance of part swept volume of to identify the element of interference matrix.It leads to some drawbacks like misjudging of contact parts and heavy computational load once adopting small step length.In view of image rendering,this work develops a calculation method by transforming the collision detection between part swept volume and other part as the occlusion calculation in graphic rendering.By adopting delicate rendering and depth testing conditions in OpenGL as well as distinguishing contact via pixel shape,this method is capable to identify the interference-free,contact,and collided for interference matrix elements.The calculation for spindle system validates the effectiveness of this method.

关 键 词：装配 干涉矩阵 碰撞检测 接触 图像空间 OPENGL 

分 类 号：TG95[金属学及工艺—钳工工艺] TH164[机械工程—机械制造及自动化]