工程CAD材料统计表自动生成系统中的层次模板技术

Research on the Hierarchical Template Technique for Automated Generation of Engineering BOM

由于国内外各工程设计院均有其独特的材料表的表格样式 ,同时 ,许多材料表的数据自动填充区域存在嵌套子表 ,这些特点给材料表的自动生成增加了难度 .文中经过认真分析和归纳大量现有图纸中的材料表 ,总结出材料表的表格框架构成规律 ,其最大特点是具有层次性 .由此 ,文中提出了层次模板技术 ,利用不同层次的模板来描述材料表的填充数据变量、填充规则、排序规则、表页构成规律、线条框架结构、分页规则和表页布局方案等 .对于不同设计单位的不同表格样式 ,用户只需定制其所需的材料表模板便能满足要求 .由于层次模板技术充分考虑了嵌套子表的处理 ,因此能够生成复杂材料表 .文中技术已成功地应用于工厂钢结构设计软件 PDSOFT Steel-Works中 ,实践证明 ,效果很好 .

Most of the engineering institutes have their own formats of BOM and some items in BOM contain nested sub-forms. These make the automatic generation of BOM much more difficult. On the basis of statistics, we summarized some common rules for most of the BOM structure. First of all, BOM is hierarchical. So the hierarchical-template-approach is proposed. Hierarchical-templates are used to describe the data source, filling rules, sorting rules, form composing rules, form structure, paging rules and page layout for BOM. Users can customize their own BOM-template to meet their own engineering needs. Since the nested sub-form has been into consideration, the hierarchical-template-approach suffices to process complex BOM formats. This approach has been successfully applied in plant steelwork design system of PDSOFT SteelWorks.