从动态工艺设计过程的视角考察工艺设计意图和二维工序图形的进化进程,以电子工艺卡片为输入对象,将自然语言理解技术和图形理解技术相融合,用具有工艺语义的工序语言指导二维工序图形的三维重建,实现对制造毛坯三维形态演变过程的智能推理,重建出基于特征的零件模型及中间工序模型.研究了工艺语义的定义与表示、机械加工领域概念知识库的构建及基于自动分词的工艺语义提取算法.%The process planning intention and the evolution of 2D-procedure drawing are inspected from the point of dynamic process design. The natural language understanding technology and t1he graphic understanding technology are combined by using the electronic process sheets as the input objects. The procedure language with process semantic is used to guide the 3D reconstruction frrm 2D procedure graph, and the intelligent inference of the 3D model evolution process of roughcast is realized and the pan model and the middle procedure model based on features are reconstructed. The definition and expression of process semantic, the construction of concept knowledge base in machining field and the extraction algorinthm of process semantic based on automatic segmentation are researched.
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