Research on Diameter Tolerance of Transmission Shaft Based on Interval Analysis

摘要

This paper describes how to discuss the uncertainty of diameter tolerance by using interval analysis. Firstly, the interval relationship among reliability, diameter tolerance and process capability index (PCI) is obtained. Considering the reasonable PCI range, then reliability range is calculated and compared by using universal gray method and combinational method, respectively. Finally, the ranges of improved tolerance and other uncertain variables are obtained. The results show that the reliability and tolerance ranges obtained by universal gray method are more reasonable. This paper provides a research thought for the uncertainty of diameter tolerance.