Open AccessReliability Analysis on Domestic Special CNC Machine Tools Based on Weibull Distribution
Author(s) -
Zhanghu Shi,
Xi Zhao,
Huang Zhang,
Haiyan Sun,
Chao Zeng,
Lei Pei,
Xin He,
Fengqin Xia
Publication year - 2021
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 - 10.1088/1742-6596/2101/1/012024
Subject(s) - mean time between failures , weibull distribution , reliability (semiconductor) , reliability engineering , machine tool , computer science , numerical control , engineering , failure rate , statistics , mathematics , mechanical engineering , power (physics) , physics , quantum mechanics , machining
Mean time between failures (MTBF), regarded as an important target to evaluate the performance of machine tool, is widely applied in analysis of reliability, especially in reliability model building. Taking Huazhong CNC HNC-848C Complex Machine Tool as research object, this paper conducted censored test to collect MTBF data during a period of 226 days. Based on the data and presupposed Weibull reliability model. Parameters of the model were estimated by least square method. Graph test Method and Kolmogorov-Smirnov Method are implemented to perform the hypothesis test on obtained parameters, which provides evaluation on MTBF of complex machine tool with theoretical basis and data reference.