可扩展尺寸极限偏差自动标注系统的研究与实现  

Study and Implementation of an Automatic Labeling System of Extensible Limit Deviation

作　　者：周竞涛[1] 张树生[1] 孙宏伟[1] 李蓉[1] 王明微[1] 王贺[1] 

机构地区：[1]西北工业大学CAD/CAM国家专业实验室,西安710072

出　　处：《机械科学与技术》2003年第2期312-314,共3页Mechanical Science and Technology for Aerospace Engineering

摘　　要：尺寸的极限偏差是工艺设计的表现结果和制造质量的重要保障 ,在实际生产过程中有着广泛的应用。针对常用计算机辅助软件在极限偏差标注中普遍存在的重复性过程多、自动化程度低、扩展性差等问题 ,在分析极限偏差及其标注过程特点的基础上 ,根据专家系统的结构和原理 ,建立了一个四层的极限偏差标注系统框架结构 ,通过分离底层数据、应用逻辑和用户交互 ,实现了标注内容和标注过程的可扩展性。该系统具有针对底层数据的内容。Limit deviation is an important expression of technics and significant guarantee of manufacturing. But much repetition, low automation and restricted extensibility are common in limit deviation labeling software. So, this paper presents a method for establishing an extensible system, based on the characteristics of limit deviation and labeling processes, to achieve automatic labeling of limit deviation. A four tier structure is adopted according to an expert system's architecture. Such a system has a user friendly interface, it is extensible, and easy of separating and maintaining the bottom layer data.

关 键 词：极限偏差 自动标注 可扩展性 专家系统 

分 类 号：TP319.72[自动化与计算机技术—计算机软件与理论]