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Research on Maintenance Strategy for CNC Machine Tools Based on Reliability Analysis

Author: ZhengRui
Tutor: ZhangYingZhi
School: Jilin University
Course: Industrial Engineering
Keywords: CNC machine tools Maintenance strategy Reliability Analysis Fault correlation Criticality Analysis
CLC: TG659
Type: Master's thesis
Year: 2011
Downloads: 210
Quote: 2
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Abstract


CNC machine tools as a modern high-tech workhorses constitute an important foundation of the digital enterprise equipment maintenance strategy formulation to safeguard the continuity of production , and improving economic efficiency is of great significance . The maintenance of the status quo of CNC machine tools is the lack of maintenance of the theoretical basis and theoretical support , no scientific maintenance decision-making method , relying solely on the traditional maintenance and repair experience , resulting in \This paper is presented in the context of its main contents are as follows : (1 ) summarize and analyze the failure characteristics of CNC machine tools based on the introduction of the theory of fault related to the reliability of the analysis , a failure rate of CNC machine tools reliability analysis model and graphical method and genetic algorithm, the model parameter estimation method . (2 ) CNC machine tools based on criticality analysis subsystem maintenance mode decision method to determine the specific maintenance , parts criticality analysis and reliability analysis results . ( 3 ) According to the characteristics of incomplete , combined with the maintenance of CNC machine tools , CNC machine tools in the cyclical maintenance , CNC machine tools based on incomplete maintenance subsystem periodic maintenance decision - making model , model unit time minimum maintenance costs as the objective function to optimize the model parameters . (4) determine the the subsystem reliability model , maintenance maintenance decision based on comprehensive consideration of the failure and economic relevance , the proposed decision-making model based CNC machine tool system maintenance group maintenance , and gives the model optimization process . Instance verify the proposed theory , models and methods , and maintenance plans for the series of CNC lathes finalized the text of which is a series of CNC lathes , for example .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Program control machine tools, CNC machine tools and machining
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