定位关系在装配序列规划中的应用研究

Research on Application of Locating Relationship in Assembly Sequence Planning

为提高产品仿真装配效率和满足装配工艺要求,提出一种基于定位关系分析的分类装配序列规划方法。首先对零件的装配特征属性进行预定义和分类,然后根据装配零件的联接关系,在可行拆装方向上建立所有邻接零件的定位关系链有向图;按照定位链顺序依次对零件进行干涉检测并更新其定位关系,最终获得可行装配序列。实例表明,该方法简化了模型的装配关系并有效缩小其装配序列解空间,在一定程度上提高了装配规划效率,并通过虚拟拆装仿真过程验证其生成序列的正确性和可行性。

In order to improve the efficiency of assembly simulation and to meet the requirements of assembly process,a classification assembly sequence planning method based on location relationship analysis is proposed.Firstly,the assembly feature attributions of the parts are pre-defined and classified,then according to the connection relationship of the assembly parts,the locating relationship among all adjacent parts in the feasible disassembly direction is established.Repeat the interference detection of the parts in each positioning chain and update the locating relationship in the order of the positioning chain to obtain a feasible assembly sequence finally.The simulation experiment indicates that the method simplifies the assembly relationship of the model and reduces the assembly sequence solution space,and can improve the assembly planning efficiency to a certain extent.The virtual disassembly simulation example verifies the correctness and feasibility of the generated sequence.