Application of Go-Flow Methodology to the Reliability Evaluation in CNC Machine Tools

2013 ◽  
Vol 694-697 ◽  
pp. 1833-1837 ◽  
Author(s):  
Jie Yu ◽  
Shuang Yu ◽  
Yu Mei Song ◽  
Ting Ting Wang ◽  
Qian Chan Li ◽  
...  
Keyword(s):  
Basic Principle ◽  
Machine Tools ◽  
Reliability Evaluation ◽  
Cnc Machine Tools ◽  
Cnc Machine

Basic principle and methods of Go-Flow methodology have been introduced. In light of the characteristics and analysis demands for CNC machine tools, methods and procedures to evaluate the reliability of CNC machine tools have been put forward.

Applied Research on Reliability Evaluation of CNC Machine Tools Based on D-S Evidence Theory

2013 ◽  
Vol 446-447 ◽  
pp. 645-649
Author(s):  
Jie Yu ◽  
Wu Sheng Tang ◽  
Ting Ting Wang ◽  
Qiao Chan Li ◽  
Zhan Guo Li
Keyword(s):  
Machine Tools ◽  
Evidence Theory ◽  
Reliability Evaluation ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Production Cycle ◽  
Scientific Policy ◽  
Cnc Machine ◽  
Control Machine

Reliability is most important to the CNC machine tools and reliability estimation is a very important part of the reliability which has magnificence to allocate resources and put forward scientific policy. Reliability evaluation of computer numerical control machine tools can use all sorts of effective information to decrease the size of test samples and save the development costs and shorten the production cycle. The paper put forward to use D-S evidence theory and the information of experts system to decrease the uncertainty of the reliability evaluation of computer numerical control machine tools. The results show that the method can effectively decrease the uncertainty of the reliability evaluation of computer numerical control machine tools.

Applied Research on Cmsr Method Used in Reliability Evaluation of the CNC Machine Tools

2013 ◽  
Vol 13 (22) ◽  
pp. 5284-5286 ◽  
Author(s):  
Jie Yu ◽  
Hai-Long Zhang ◽  
Wu-sheng Tang ◽  
Ting-ting Wang ◽  
Zhan-guo Li ◽  
...  
Keyword(s):  
Machine Tools ◽  
Applied Research ◽  
Reliability Evaluation ◽  
Cnc Machine Tools ◽  
Cnc Machine

scholarly journals Reliability Evaluation of CNC Machine Tools Considering Competing Failures of Fault Failure Data and Machining Accuracy Degradation Data

2021 ◽  
Author(s):  
Cong Feng ◽  
Zhaojun Yang ◽  
Chuanhai Chen ◽  
Jinyan Guo ◽  
Jiangong Leng ◽  
...  
Keyword(s):  
Machine Tools ◽  
Failure Modes ◽  
Reliability Evaluation ◽  
Cnc Machine Tools ◽  
Machining Accuracy ◽  
Failure Model ◽  
Cnc Machine ◽  
Failure Data ◽  
Degradation Data ◽  
Degradation Failure

Abstract Traditional reliability evaluation of CNC machine tools usually considers a single failure mode of fault failure or degradation failure, or considers fault failure and degradation failure to be independent of each other. However, in the actual working conditions, fault failure and degradation failure are mutually affected, and the reliability evaluation of the competing failure models of CNC machine tools by considering the two failure modes comprehensively can get more accurate evaluation results. Therefore, this paper proposes a reliability evaluation method for CNC machine tools considering fault failure data competing with machining accuracy degradation data. A fault failure model of CNC machine tools is established based on a non-homogeneous Poisson process. The fault failure model is updated according to the different effects of each maintenance result of the failure on machining accuracy. By integrating multiple geometric errors of CNC machine tools through multi-body system theory, the amount of machining accuracy degradation is extracted. A machining accuracy degradation failure model is established using the Wiener process. Considering the correlation between fault failure and degradation failure, a competing failure model based on the Coupla function is developed for evaluating the reliability of CNC machine tools. Finally, the effectiveness of the proposed method is verified by example analysis.

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