图热点和树结点双向驱动汽车备件系统可视化研究

Research on Visualization of Automobile Spareparts Management System mutually Driven by Hotpoints & Treenodes

针对国内汽车企业不具备整车齐全的三维CAD模型的实际情况,提出一种基于动态装配图热点和产品结构树结点双向驱动的备件数据可视化管理方案,在Delphi开发平台上将ActionScript技术和ActiveX技术集成到可视化备件管理系统中。详细阐述了图热点驱动和树结点驱动的程序实现流程,给出了动态装配图、装配结构树和界面数据窗三者之间的联动关系,实现两种驱动的等效性。为了便于用递归算法遍历结构树,对复杂网状结构的零部件从属依赖关系进行规范化处理,使之成为树形结构。采用约束递归迭代,对一次性加载零部件的层数和范围进行约束,用统一的虚拟临时结点代替当前非叶子结点的子结点,实现整车装配关系结构树构造过程的优化。

In view of the fact that most domestic automobile companies can＇t provide the whole CAD models of full spareparts, We present the visualization method of automobile spareparts management driven by hotpoints of dynamic assembly drawing and nodes of product structure tree. On Delphi development platform,we integrate the technologies of Actionscript and ActiveX into visual spareparts management system.The paper also details the flow-chart of hotpoints driving and treenodes driving. We describe the linkage relationship of assembly drawing, structure tree and interface data windows. The linkage makes two ways of driving gain the same results. In order to use recursion algorithm to look up nodes in the structure tree, we normalize the complex subordinative relationships from net structure into tree structure. In the system we use restricted recursion to optimize the constructing process of the structure tree. We only load limited layers and limited range parts in one step and use a virtual temporary node to replace the childnodes of current node who is not the leaf node.