摘要
提出利用装配序列规划算法及零部件几何信息自动生成复杂产品爆炸图的方法。为解决零部件在倾斜方向上的拆卸可行性分析的难题,将现有干涉矩阵结构扩展到零部件局部坐标系轴向。从几何可行性和装配成本角度,利用装配关系矩阵及可定制优先级的指标,每次逐级筛选出最优拆卸零部件、方向及并行性,以构造最优序列。按结构紧凑性及序列可读性原则,在读取拆卸序列过程中,利用直接提取的两类零部件包围盒和实时计算的累积包围盒求取零部件位移矢量并驱动零部件移动,从而生成爆炸图,并自动实现装配追踪线及技术图解等相关功能。在UG平台下开发应用系统,结合齿轮减速器爆炸图实例及比较,说明本方法在爆炸图生成效率及可视化效果方面能够满足工程应用要求,可极大地降低手工生成爆炸图的工作强度。
A method for generating exploded view automatically for complex product by using assembly sequence planning and component geometric information is proposed. The structure of existing interference matrix is extended to axial directions of local coordinate system to analyze detachability of each component in tilt directions. From the viewpoints of geometric feasibility and assembly cost,each optimal disassembly component with direction and parallelism is stepwise screened out to form a wholly optimized sequence,using assembly relation matrices and several factors whose priority can be customized. Following principles of compact structure and sequence readability,displacement vector of each component is calculated by using its bounding box extracted directly and accumulative bounding box of exploded ones calculated in real time,while reading disassembly sequence. Each component is then driven to move to form the final exploded view. Assembly trace line and technical illustration can be developed further on this basis. The application system is developed on UG platform with a gear reducer taken as example to verify that the generation efficiency and the visual effect of the method meet the needs of engineering,which greatly reduces intensity of manual work.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2010年第21期149-157,共9页
Journal of Mechanical Engineering
基金
解放军总装备部武器装备预研基金资助项目(9140A18010207LN0101)
关键词
装配序列规划
爆炸图
干涉矩阵
包围盒
Assembly sequence planning Exploded view Interference matrix Bounding box
