关键词: 三维重建, 自然语言理解, 工艺语义, 工序模型, 动态演变

Abstract: To satisfy urgent requirements of enterprises for three-dimensional (3D) process model, a process-semantics-driven framework of 3D model reconstruction system was proposed. Taking digital processing planning sheets set as research object, the process information was introduced firstly into the 3D model reconstruction domain. By using natural language understanding technology, the process semantics model was extracted to describe the processing planning intentions. According to the evolution process and characteristics of 2D process diagram, the process semantics model was mapped to process diagram so as to guide the workpieces 3D reconstruction. And the prototype system was developed to realize that automatic generation for 3D serial process model and visualized simulation for workpiece cutting in processing planning. Taking a gearbox as an example, all functions of the system were verified.

Key words: three-dimensional model reconstruction, natural language understanding, process semantic, process model, dynamic evolution