Open AccessDistribution Model of Time Between Failures in CNC System
Author(s) -
Guiyou Lu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1605/1/012005
Subject(s) - reliability (semiconductor) , fault (geology) , numerical control , reliability engineering , interval (graph theory) , function (biology) , distribution (mathematics) , failure rate , probability density function , computer science , engineering , mathematics , statistics , mechanical engineering , geology , mathematical analysis , power (physics) , physics , machining , quantum mechanics , combinatorics , evolutionary biology , seismology , biology
In this paper, the fault data of 50 CNC milling machine CNC systems are used. By observing the scatter plot of the probability density function and distribution function of the time between faults, the type of the distribution model is initially selected. After the inspection, the distribution model of CNC system failure interval time was established, and the three main reliability indexes were evaluated.