基于MBD模型的工序模型构建方法

针对“基于模型驱动”的产品研制模式中,难以高效地构建工序模型以准确描述实际加工过程的问题,开展机加件工序模型构建方法的研究,提出以基于模型定义（MBD）模型为输入的工序模型构建方法.以零件MBD模型为输入,采用CAD系统二次开发技术进行模型参数提取,提出MBD模型参数信息结构化表达方法.交互进行加工工序设计,建立常见的机加工序工艺信息库辅助具体加工方案设计;根据MBD模型参数和工序参数得到工序模型构建数据文件.读取工序模型构建数据文件,实现工序模型快速建模.开发了工序模型辅助构建工具,以某航空企业典型机加件为例,验证了所提方法的有效性.

In-process model construction method based on model-based definition model

The construction method for in-process model of machining process was analyzed to meet the requirement of efficient construction of in-process model containing accurate machining process information in "model-driven" product development mode. A new method to construct in-process model based on model-based definition (MBD) model was proposed. Taking MBD model as input, feature parameter extraction was completed and stored in proposed structure by CAD system secondary development technology. Then machining procedure was interactively designed and specific machining scheme were worked out by the machining process knowledge base. The in-process model construction data files were obtained according to the MBD model parameters and machining procedure parameters. The in-process model was rapidly constructed based on the data files. A tool was developed to assist in-process model construction, and some typical machining parts of an aviation enterprise were taken to verify the proposed method.