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Tolerance analysis for automobile transmission shaft based on minimum cost and reliability target
Jiao Luo1, Xintian Liu1, Haijie Wang1
1School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai, China.
Abstract:
To design a reasonable dimensional tolerance of a transmission shaft, the higher product quality while lower manufacturing cost must be considered. This paper provides a mathematical model and a flowchart which elucidates the relationship between process capability index (PCI), reliability, tolerance and manufacturing cost, considering the characteristics of the shaft diameter, the material and manufacturing process. A 10.904% cost reduction under certain PCI range of a real case shows the effectiveness of the model and flowchart, thus it can be applied to those technical area when optimizing product design.
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