中文摘要：

为了解决装配序列规划中的三维非正交装配方向自动选择问题,提出一种基于接触关系分析的装配序列规划方法.该方法根据装配几何模型自动提取零件间接触关系,由此确定模型中零件运动约束,根据该约束求解出每个零件的瞬时可行运动方向集;通过在可行方向上构建平移路径并作干涉检查,检测出当前可拆卸零件;重复上述过程,最终推导出装配序列分层图.最后通过实例验证了文中方法的正确性和有效性;实例结果表明,该方法在一定程度上可以提高装配序列规划的自动化程度.

英文摘要：

This paper presents an assembly sequence planning method with a capability to automatically select non-orthogonal assembling directions based on part contact-relation analysis.First,motion constraints for a part are created according to part contact-relations extracted from assembly model and instantaneous movable directions of the part are identified by solving the inequality constraints.Second,currently removable parts are determined by checking the existence of feasible disassembly paths constructed along the instantaneous movable directions.Finally,different layers of removable parts in an assembly are obtained by repeating the above two steps and the reverse order of the layers is regarded as the assembly sequence.The experimental results are presented and they show that the method is effective and efficient.