摘要
作为机械产品设计和制造过程中的一项重要内容,计算机辅助公差设计(CAT)是CAD/CAPP/CAM集成的关键技术,是国内外先进制造技术发展中亟需解决的问题。计算机辅助公差设计覆盖面非常广泛,涵盖公差规范和标准化、设计/制造工艺/产品生命周期管理中的公差设计、检测与测量以及功能公差设计。本文首先简要分析这些热点问题的研究进展情况,其次介绍本专辑收集的第13届国际生产工程科学院计算机辅助公差设计会议中的最新研究成果,分析该领域的最新研究进展,希望能帮助读者了解相关研究工作并促进研究人员开展讨论,进一步实现计算机辅助公差设计中的关键技术的突破,促进CAD/CAPP/CAM的集成。
Computer aided tolerancing （CAT） covers a wide range of subjects including specification and standardization, tolerancing in design/manufacturing process/product life management, verification and metrology, and functional tolerancing. Dimensioning and tolerancing standards origi- nated about 77 years ago in the form of various na- tional and company standards that governed engi- neering drafting and documentation practices, These standards have evolved and their rapid development has brought about many significant changes to tol- erancing in design and manufacturing. The release of ISO 14405-1：2010 （ISO, 2010） has introduced a rich new set of size specification modifiers, which in- cludes two-point and spherical local sizes least squares, maximum inscribed and minimum circum- scribed associations, and calculated diameters. Morse et al. （2012） present ＂size＂ as a fundamental engi- neering notion from several viewpoints, trace its evolution in engineering drawings, and discuss the implications of the use of size modifiers.
基金
Project supported by the Science Fund for Creative Research Groups of National Natural Science Foundation of China(No.51221004)
the National Natural Science Foundation of China(No.51275464)
the National Basic Research Program(973) of China(No.2011CB706505)
