面向三维机加工艺规划系统的尺寸信息模型构建  

Creation of dimension information model for three-dimensional machining process planning system

作　　者：陈卓宁[1,2] 林剑[1] 徐同明 

机构地区：[1]华中科技大学机械科学与工程学院,武汉430074 [2]武汉开目信息技术有限责任公司,武汉430223

出　　处：《现代制造工程》2016年第1期33-38,共6页Modern Manufacturing Engineering

基　　金：2012年电子信息产业发展基金项目(工信部财[2012]407号)

摘　　要：在数字化工艺设计领域,制造特征识别技术是连接CAD和CAPP的桥梁,并将MBD模型的几何和非几何信息转换为CAPP可识别的特征属性。然而,标注尺寸在工艺设计领域与CAD中表达方式的差异,阻碍了特征识别对应的尺寸信息作为其属性信息。在重点研究二者表达方式的不同点后,为了构建适用于三维机加工领域的尺寸信息模型,将尺寸依附体抽象转化为工艺上有意义的面或中心线,促进了设计特征与制造特征之间的转化,为后续的工艺规划提供了更加完善的制造信息。In the area of parametric process design, machining feature identification is a bridge connecting CAD and CAPP and transforms data of geometric information and non-geometric information extracted from Model Based Definition （MBD） model to recognizable feature data. However, the difference in representation between the area of CAD and parametric process design has become a barrier to transform the dimension data as specific feature attribute data. In order to create a dimension information model used in 3D process planning ofter studying the difference between them, a methodology is proposed. It converts dimension attachments to a meaningful geometric element, such as a face or a axis element, the model facilitates feature mapping and supplies a more complete process information in the downstream process planning application.

关 键 词：基于模型的定义 制造特征 尺寸信息模型 尺寸依附体 

分 类 号：TH164[机械工程—机械制造及自动化]