Study on the Influences of Datum Precedence on Functional Tolerance Analysis

Abstract:

Tolerance analysis plays an important role at the stage of product design and has great influences on the assembly quality and manufacturing costs. A positioning mechanism composed of two parts with cylindrical and planar junction is chosen for studying the influences of datum precedence on functional tolerance analysis. For different cases, the tolerance specification is specified with ISO tolerance language and the analysis line method is applied to obtain the analytical expression between the possible displacement on functional feature and geometric deviation on each part. The results for different datum precedence are summarized in this paper.

• Periodical: Applied Mechanics and Materials (Volume 470)
• Pages: 475-478
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.470.475
• Online since: December 2013
• Authors: Chun Li Li, Jian Xin Yang*, Jian Wei Sun
• Keywords: Analysis Line, Assembly Junction, Datum Precedence, Tolerance Analysis

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