Journal of Mechanical Science and Technology

, Volume 33, Issue 4, pp 1603–1613 | Cite as

Compilation of load spectrum of machining center spindle and application in fatigue life prediction

  • Guofa Li
  • Shengxu Wang
  • Jialong HeEmail author
  • Kai Wu
  • Chuanyang Zhou


The load spectrum of machining center (MC) is the data basis for fatigue life prediction. A novel compiling method of dynamic cutting load spectrum of MC spindle is proposed, and then applied to the fatigue life prediction. Typical process parameters were determined based on the data collected in the user field by establishing the characteristic load distribution, and dynamic cutting load was measured using the load test platform. Mean-frequency and amplitude-frequency matrices of the load were obtained by the rainflow counting method, and mixture Weibull distribution (MWD) was used to establish the mean and amplitude distribution. Thus, the two-dimensional dynamic cutting load spectrum of spindle was compiled. The eight-level program load spectrum was established, and then applied to the spindle fatigue life prediction. The accuracy of load spectrum is improved because of the MWD, instead of single distribution, and the complete load spectrum compilation process also improves the life prediction accuracy.


Fatigue life prediction Load spectrum Machining center spindle Mixture Weibull distribution 


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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  • Guofa Li
    • 1
  • Shengxu Wang
    • 1
  • Jialong He
    • 1
    • 2
    Email author
  • Kai Wu
    • 3
  • Chuanyang Zhou
    • 1
  1. 1.School of Mechanical and Aerospace EngineeringJilin UniversityChangchun, JilinChina
  2. 2.College of Computer Science and TechnologyJilin UniversityChangchun, JilinChina
  3. 3.Beijing Hangxing Machinery Manufacture Limited CorporationBeijingChina

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