Computer Modeling of Geometric Variations in Mechanical Parts and Assemblies
Computer Modeling of Geometric Variations in Mechanical Parts and Assemblies
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DOI：
10.1115/1.1572177
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发表时间：
2003-03
期刊：
影响因子：
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通讯作者：
Yanyan Wu;J. Shah;J. Davidson
中科院分区：
文献类型：
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作者：
Yanyan Wu;J. Shah;J. Davidson
本文报告了与开发 GD&T（几何尺寸和公差）计算机模型相关的项目的一部分，以支持公差规范、验证和公差分析。本文研究了几何变化所涉及的基本元素及其相互关系。逻辑公差等级是根据目标、基准参考系和公制关系定义的。 ASME Y14.5 公差等级映射到这些逻辑等级。讨论了 GD&T 数据模型的开发及其在支持设计规范、验证和公差分析中的应用。
This paper reports on part of a project related to the development of a computer model for GD&T (Geometric Dimensioning and Tolerancing) to support tolerance specification, validation and tolerance analysis. The paper examines the basic elements involved in geometric variation and their interrelations. Logical tolerance classes are defined in terms of a target, a datum reference frame, and metric relations. ASME Y14.5 tolerance classes are mapped to these logical classes. The development of a data model for GD&T and its application in supporting design specification, validation, and tolerance analysis are discussed.