NDLI: Research on tool change time and the dynamic reliability of the machining process based on sensitivity analysis

Content Provider	Springer Nature Link
Author	Wang, Xingang Wang, Baoyan LV, Chunmei Chen, Xiaoming Zhang, Yimin
Copyright Year	2016
Abstract	Tool changing is on the basis of tool wear failure and breakage failure. Utilization rate of the tool is low, which cannot guarantee the reliability of the whole machining system. In machining process, as the number of parts produced increases, tool wear is constantly increasing, which will contribute to the reduction of the reliability of the cutting tool. That account for processing of substandard products. Combining the moment estimation with the maximum likelihood estimation with the dynamic reliability analysis method, the study builds a mathematical model of the dynamic reliability for machining process under the premise of regarding cutting parameters as random variables. The reliability of overall machining process is lower than a given target; the proposed model can identify the tool which has the biggest failure rate quickly and accurately. The failure rate formula of each tool involved in each operation is deduced as well. Based on failure rate, an algorithm for defining the critical tool and its corresponding tool change time is proposed. Beyond that, for maximizing the utilization of every tool, the given model can pick up the cutting parameter which has the largest sensitive degree to the reliability via sensitivity analysis method. Then, the selection of relevant stock removal should be changed so as to improve the reliability of cutting tool and the whole process system, as well as enabling the cutter continue to work and delaying tool change time finally. Ultimately, the manufacturing process can maximize the cutters’ potential and thus reduce the number of tool changes, as well as the production costs.
Starting Page	1535
Ending Page	1544
Page Count	10
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	89
Issue Number	5-8
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-07-28
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cutting tool Reliability Sensitivity Tool change time Industrial and Production Engineering Media Management Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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