A variational geometric constraints network for a tolerance types specification
A variational geometric constraints network for a tolerance types specification
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DOI：
10.1007/s00170-003-1572-7
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发表时间：
2004-06
期刊：
影响因子：
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通讯作者：
Jie Hu;G. Xiong;Zijian Wu
中科院分区：
文献类型：
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作者：
Jie Hu;G. Xiong;Zijian Wu
形位公差规格包括指定公称几何零件的公差类型和值。在目前的计算机辅助公差实践中，设计人员必须在CAD系统中手动指定公差类型和公差值，通常从单个部件开始。本文提出了一个框架和计算机实现，提供了自动化的方法规格的几何公差类型。基于ISO/TC 213产品几何规范，提出了变几何约束网络的概念。研究了形位公差类型标注网络的生成和应用。实例分析表明该方案是有效的，并给出了公差规格说明的模型，包括类型规格说明和值规格说明。
A geometric tolerance specification includes specifying the tolerance types and values for nominal geometry parts. In current computer-aided tolerancing practices, designers have to specify manually both tolerance types and values in a CAD system, usually starting out from single components. The paper presents a framework and computer implementation that provides automated methods for the specification of geometric tolerance types. Based on the ISO/TC 213 geometric product specification, a new concept of a variational geometric constraints network is presented. The generation and application of the network to specify geometric tolerance types is studied. An example is analysed to show the scheme to be effective, and the model for a tolerance specification, including the types and values specification, is presented.