Research on Assembly Process Modelling Method based Assembly Task Collection

Keywords：Hierarchical structure; assembly task; assembly process; virtual assembly Abstract： Assembly process model illuminating product assembly is the base of assembly simulation and assembly assessment, and assembly process model based ordinal assembly task link can not describe hierarchical structure and parallelism of assembly task.The development actuality of assembly process modelling is simply investigated, and product hierarchy information model is established, and its implementation method is illuminated, and the detailed description of assemlby task is analyzed.According to hierarchical relation of assembly task, assembly process modelling method is achieved based ATCLHS (Assembly Task Collection Link based Hierarchical Structure).Storage method and access method of ATCLHS is established based nested table .An example of assembly process model based assembly task collection is illuminated by ATCLHS.