车削颤振时变可靠性预测

针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测中,用线性方程表示了合力切削力系数的均值随切削时间的变化关系,建立了时变稳定性和时变可靠性模型.获得给定加工条件下系统的时变极限切宽和时变颤振可靠度曲线.最后对提出的计算方法做了相应的实验证明.实验表明.提出的颤振时变可靠性预测方法能够更为准确地预测不同加工时间下的颤振....

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Published in东北大学学报（自然科学版） Vol. 38; no. 5; pp. 684 - 689
Main Author 刘宇 王振宇 杨慧刚 张义民
Format Journal Article
LanguageChinese
Published 东北大学 机械工程与自动化学院,辽宁 沈阳,110819%菏泽学院 蒋震机电工程学院,山东 菏泽,274015 2017
Subjects
刀具磨损
切削力系数
时变随机参数
颤振时变可靠性
颤振时变稳定度
cutting force coefficient
time-varying chatter stability
颤振时变可靠性
刀具磨损
tool wear
切削力系数
time-varying random parameter
时变随机参数
颤振时变稳定度
time-varying chatter reliability
Online AccessGet full text
ISSN1005-3026
DOI10.3969/j.issn.1005-3026.2017.05.016

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Abstract 针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测中,用线性方程表示了合力切削力系数的均值随切削时间的变化关系,建立了时变稳定性和时变可靠性模型.获得给定加工条件下系统的时变极限切宽和时变颤振可靠度曲线.最后对提出的计算方法做了相应的实验证明.实验表明.提出的颤振时变可靠性预测方法能够更为准确地预测不同加工时间下的颤振.
AbstractList TP; 针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测中,用线性方程表示了合力切削力系数的均值随切削时间的变化关系,建立了时变稳定性和时变可靠性模型.获得给定加工条件下系统的时变极限切宽和时变颤振可靠度曲线.最后对提出的计算方法做了相应的实验证明.实验表明.提出的颤振时变可靠性预测方法能够更为准确地预测不同加工时间下的颤振.
针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测中,用线性方程表示了合力切削力系数的均值随切削时间的变化关系,建立了时变稳定性和时变可靠性模型.获得给定加工条件下系统的时变极限切宽和时变颤振可靠度曲线.最后对提出的计算方法做了相应的实验证明.实验表明.提出的颤振时变可靠性预测方法能够更为准确地预测不同加工时间下的颤振.
Abstract_FL Tool wear in the machining process changes the cutting force coefficient and other parameters in flux, which causes the prediction accuracy of traditional chatter prediction to decrease greatly with the increase of processing time. The time-varying reliability theory was introduced to predict chatter reliability, and the linear equations were used to express the change inthe mean values of cutting force coefficient with varied cutting time whereby the chatter stability and reliability model in turning was presented. The time-varying critical cutting width and time-varying chatter reliability curve were obtained in the given machining conditions, and the corresponding calculation method was tested experimentally. The results showed that the proposed method can be used to predict the chatter of different processing time accurately.
Author 刘宇 王振宇 杨慧刚 张义民
AuthorAffiliation 东北大学机械工程与自动化学院,辽宁沈阳110819 菏泽学院蒋震机电工程学院,山东菏泽274015
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Author_FL LIU Yu
WANG Zhen-yu
YANG Hui-gang
ZHANG Yi-min
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Issue 5
Keywords cutting force coefficient
time-varying chatter stability
颤振时变可靠性
刀具磨损
tool wear
切削力系数
time-varying random parameter
时变随机参数
颤振时变稳定度
time-varying chatter reliability
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PublicationTitle 东北大学学报（自然科学版）
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PublicationYear 2017
Publisher 东北大学 机械工程与自动化学院,辽宁 沈阳,110819%菏泽学院 蒋震机电工程学院,山东 菏泽,274015
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Snippet 针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测中,用...
TP; 针对车削加工过程中刀具磨损使得切削力系数等加工参数不断变化,进而导致传统的颤振预测方法随着加工时间的增加预测精度大大降低的问题,将时变可靠性理论引入颤振预测...
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SubjectTerms 刀具磨损
切削力系数
时变随机参数
颤振时变可靠性
颤振时变稳定度
Title 车削颤振时变可靠性预测
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