Reliability analysis of ceramic cutting tools in continuous and interrupted hard turning
Reliability analysis of ceramic cutting tools in continuous and interrupted hard turning
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陶瓷刀具连续和断续硬车削可靠性分析
DOI：
10.1016/j.ceramint.2017.05.032
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发表时间：
2017-09
影响因子：
5.2
通讯作者：
Guo Jingxia
中科院分区：
文献类型：
--
作者：
Cui Xiaobin;Jiao Feng;Ming Pingmei;Guo Jingxia
对陶瓷刀具连续硬态车削和断续硬态车削的可靠性进行了分析。以细观力学和损伤力学为基础，对刀具材料微观组织中原始缺陷的统计特征进行了评价和分析。综合考虑刀具材料微观组织的原始损伤、刀具材料的宏观力学性能和刀具所受外载荷的综合影响，提出了一种新的刀具性能指标。对连续和断续车削的刀具性能指标进行了统计分析。确定了刀具性能指标的概率分布与刀具可靠性之间的关系。结果表明，陶瓷刀具材料的原始损伤服从威布尔分布。原始损伤的概率密度随着原始损伤的增加而减小。采用断续车削时，刀具性能指标较低，且随切削长度比的减小而降低。该指标服从威布尔分布，且在转向工况变化时不发生变化。在断续车削试验中，刀具性能指标的概率密度函数中的形状参数和尺度参数相对较低，切削长度比相对较小。与刀具性能指标相似，不同切削条件下的刀具寿命也服从威布尔分布。当车削条件变化时，刀具寿命概率密度函数中的形状参数和尺度参数的变化规律与刀具性能指标概率密度函数中的形状参数和尺度参数的变化规律相似。刀具寿命概率密度函数和刀具性能指标概率密度函数均随自变量的增大先增大后减小。当断续车削的切削长度比较小时，刀具性能指标形状参数可用于刀具可靠性的计算。
Reliability analysis was carried out for ceramic cutting tools used in continuous and interrupted hard turning. On the basis of micromechanics and damage mechanics, statistical characteristics of the original defects in the tool material microstructure were evaluated and analyzed. A new tool performance indicator was proposed considering the combined effects of the original damage of the tool material microstructure, the macro-mechanical properties of the tool material and the external loads on the cutting tool. Statistical analysis of the tool performance indicator was performed for continuous and interrupted turning. The relationship between tool reliability and the probability distribution of tool performance indicator was identified. It was found that the original damage of the ceramic tool material followed a weibull distribution. The probability density of the original damage decreased as the original damage increased. When interrupted turning was adopted, tool performance indicator was relatively low and the indicator decreased as cutting length ratio became smaller. The indicator followed a weibull distribution and this was invariable when turning condition changed. Relatively low shape parameter and scale parameter in probability density function of tool performance indicator appeared when the tool was tested in interrupted turning and relatively small cutting length ratio was applied. Similar to tool performance indicator, tool lives obtained under different cutting conditions also followed a weibull distribution. When turning condition varied, shape parameter and scale parameter in probability density function of tool life changed in a similar way to those parameters in probability density function of tool performance indicator. Both the probability density function of tool life and that of tool performance indicator first increased and then decreased as the independent variable increased. Shape parameter for tool performance indicator can be used in the calculation of tool reliability when the cutting length ratio in interrupted turning was relatively small.
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影响因子：
4.1
作者：
F. Leckie
通讯作者：
F. Leckie
DOI：
--
发表时间：
1951
期刊：
Journal of Applied Mechanics
影响因子：
--
作者：
W. Weibull
通讯作者：
W. Weibull
影响因子：
4.2
作者：
N. Fan
通讯作者：
N. Fan
Al2O3/WC/TiC微纳复合陶瓷刀具的切削性能及失效机制
DOI：
10.1016/j.ijrmhm.2009.11.007
发表时间：
2010-05
影响因子：
3.6
作者：
J. Zhao;Y.H. Zhou;X.L. Yuan
通讯作者：
X.L. Yuan
DOI：
10.1016/j.procir.2014.06.057
发表时间：
2014
期刊：
Procedia CIRP
影响因子：
--
作者：
Shujie Liu;Hongchao Zhang;Chao Li;Huitian Lu;Yawei Hu
通讯作者：
Shujie Liu;Hongchao Zhang;Chao Li;Huitian Lu;Yawei Hu