【摘要】 在对虚拟装配中的装配路径规划基本流程进行分析的基础上,指出了虚拟环境下进行装配路径规划的关键技术,并提出了基于有效采样点的装配路径优化方法,虚拟环境下基于几何约束的零件三维空间运动方法,集几何约束自动识别、交互式约束定义和位置约束为一体的混合模式的零部件精确定位方法。相关算法在自主开发的虚拟装配工艺规划软件VAPP中得到实施,并应用到航天产品的装配工艺设计中。更多还原

【Abstract】 Based on the analysis of basic workflow in assembly path planning, the key technologies of assembly path planning in virtual assembly were pointed out. Then an optimized method for assembly path record based on effective sampling points was introduced. The method of how to control virtual object’s 3D movement in the virtual environment based on its geometry constraints was established. In order to solve components’ exact placement problem in virtual environment, a mixed method was proposed and this method was made up of geometry constraint recognition algorithm, human-computer interactive geometry constraint define and direct position constraint algorithm. Relation algorithms have been verified in the self-developed system named Virtual Assembly Process Planning System, and this VAPP system has been applied in assembly process planning of aerospace-related products.更多还原