Analysis on Failure Mode Severity of Machining Center Spindle System

Guixiang Shen¹, Shuguang Sun¹, Yingzhi Zhang¹, Xiaoyan Qi^1,2,Bingkun Chen¹

(1.College of Materials Science and Engineering, Jilin University, Changchun 130022, China; 2.Dept. of Aircraft and Driving Force, Aviation University of Air Force, Changchun 130022,China)



Abstract:

According to the subjectivity and fuzziness of analysis on failure mode severity about spindle system of machining center, an analysis model of the failure mode severity of such a system is proposed based on the new fault severity index system, improved analytic hierarchy process (IAHP) and entropy-based fuzzy comprehensive evaluation. IAHP and entropy methods are adopted to determine the comprehensive failure severity index weight. The evaluation result is obtained after the factor set, comment set, weight set, and other parameters are determined, and then the level of risk degree and numerical value order of every spindle system failure mode is given. By taking an example, we verify that the proposed method can quantify the qualitative problem comprehensively, obtain more accurate analysis results, and provide the theoretical reference for mechanization and sequencing of failure mode effect analysis in reliability analysis. The calculation results can also serve as the basis of failure mode, effects, and criticality analysis in the subsequent step.

Key words:  processing center  spindle system  severity  improved analytic hierarchy process(IAHP) and entropy  fuzzy comprehensive evaluation

DOI：10.11916/j.issn.1005-9113.2015.02.018

Clc Number:TG659

Fund: