Reliability Allocation of CNC Machine Tools Based on Failure Information and Fuzzy Mathematics

doi:10.12068/j.issn.1005-3026.2015.02.020

Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (2): 245-249.DOI: 10.12068/j.issn.1005-3026.2015.02.020

• Mechanical Engineering • Previous Articles Next Articles

Reliability Allocation of CNC Machine Tools Based on Failure Information and Fuzzy Mathematics

ZHANG Yi-min， JIA Jing-cun， HUANG Xian-zhen

School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China.

Received:2014-03-24 Revised:2014-03-24 Online:2015-02-15 Published:2014-11-07
Contact: ZHANG Yi-min
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Abstract

Abstract: Based on the fuzzy mathematics and the failure information， a reliability allocation method for CNC machine tools was proposed. First， the fault record data of a type of CNC machine tools were sorted out， and the whole machine system was divided into ten subsystems. Then， the reliability functions for the whole system and the subsystems were established according to the statistical collation of the failure records. An allocation model of the failure rate based on the fuzzy mathematics and entropy weight methods was thus developed with four factors considered. This method can solve the reallocation of the machine’s reliability， thus enhancing the reliability of the whole system.

Key words: CNC machine tool, failure information, fuzzy mathematics, entropy weight methods；reliability allocation

CLC Number:

TP114

ZHANG Yi-min， JIA Jing-cun， HUANG Xian-zhen. Reliability Allocation of CNC Machine Tools Based on Failure Information and Fuzzy Mathematics[J]. Journal of Northeastern University Natural Science, 2015, 36(2): 245-249.

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Reliability Allocation of CNC Machine Tools Based on Failure Information and Fuzzy Mathematics

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