摘要
在三维CAD领域,随着基于模型定义(Model Based Definition,MBD)技术应用的不断深入,MBD零件设计模型(基于MBD设计的三维零件模型)可作为三维机加工艺规划系统的单一数据源,为工艺规划过程设计提供完整的制造信息.制造特征识别是三维机加工艺规划系统的核心技术,是进行工艺规划活动的前提,其基础数据来源于MBD模型的几何信息和非几何信息(MBD数据).针对汽车、航天等领域广泛使用的CATIA三维模型MBD数据提取的关键技术和难点,介绍如何深入应用CATIA的CAA二次开发技术提取零件设计模型的MBD数据,并应用于三维机加工艺规划系统的制造特征识别中,为后续的工艺规划过程提供保证.
With the deepening of MBD（Model Based Definition） technology applications in the field of three-dimensional CAD, MBD Part Design Model（Three-Dimensional Part Model designed with definition of MBD） has been the only data source of the three-dimensional machining process planning and provides a complete manufacturing information for the design process in process planning. Manufacturing feature recognition is the core technology of Three-Dimensional machining process planning and the prerequisites of process planning activities. And its data mainly comes from the Geometric information and Non-geometric information（MBD Data）of MBD Part Model. This paper focuses on the pivotal technic and difficulty of MBD Data’s extraction of CATIA Three-Dimensional Model which is commonly used in auto and aviation field, describing how to apply CAA secondary development technology in depth, extracting MBD Data and useing it to feature recognition technic of three-dimensional machining process planning system, guaranteeing the following machining process planning.
出处
《计算机系统应用》
2014年第9期213-218,共6页
Computer Systems & Applications
