吉林大学学报(工学版) ›› 2003, Vol. ›› Issue (2): 38-40.

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Evaluation of maintainability level of CNC lathes

CHEN Dian-sheng1,2, XIAO Ying-kui2, JIA YA-zhou1   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China;
    2. School of Mechatronic Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2002-12-18

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Abstract: After analyzing 226 datas of repairing time collected in field,the distribution model of repairing time of CNC lathes was established.The maintainability functions,including maintainability degree M(t),probability density m(t) and maintainability rate μ(t),were given.The repairing time fits lognormal distribution.From the distribution,the maintainability level of CNC lathes has been evaluated.

Key words: CNC lathes, maintainability, lognormal distribution

CLC Number: 

  • TG659.1
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