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Dynamic reliability sensitivity of cemented carbide cutting tool

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Abstract

Influence of geometric and cutting parameters of cemented carbide cutting tool on reliability of cutting tool has become more and more mature, yet influence of its physical and material parameters on reliability is still blank. In view of this, cutting test and fatigue crack growth test of YT05 cemented carbide cutting tool are conducted to measure such data as the original crack size, growth size, times of impact loading, number and time of cutting tool in failure, and stress distribution of cutting tool is also obtained by simulating cutting process of tools. Mathematical models on dynamic reliability and dynamic reliability sensitivity of cutting tool are derived respectively by taking machining time and times of impact loading into account, thus change rules of dynamic reliability sensitivity to physical and material parameters can be obtained. Theoretical and experimental results show that sensitive degree on each parameter of tools increases gradually with the increase of machining time and times of impact loading, especially for parameters such as fracture toughness, shape parameter, and cutting stress. This proposed model solves such problems as how to determine the most sensitive parameter and influence degree of physical parameters and material parameters to reliability, which is sensitivity, and can provide theoretical foundation for improving reliability of cutting tool system.

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Corresponding author

Correspondence to Xingang Wang.

Additional information

This project is supported by National Natural Science Foundation of China (Grant Nos. 51105068, 51305071), Fundamental Research Funds for the Central Universities of China (Grant No. N120203001), and Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20110042120017)

WANG Xingang, born in 1979, is currently an associate professor at School of Control and Engineering, Northeastern University, China. His research interests include dynamic reliability analysis of mechanical components.

ZHANG Yimin, born in 1958, is currently a professor at School of Mechanical Engineering and Automation, Northeastern University, China. His research interests include dynamic reliability analysis of mechanical components. His main research interests include mechanical reliability design, modern design methodology, etc.

LI He, born in 1975, is currently a lecturer at School of Mechanical Engineering and Automation, Northeastern University, China. His main research interests include mechanical reliability design, modern design methodology

LÜ Chunmei, born in 1974, is currently a lecturer at School of Mechanical Engineering and Automation, Northeastern University, China. She research interests include mechanical reliability design.

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Wang, X., Zhang, Y., Li, H. et al. Dynamic reliability sensitivity of cemented carbide cutting tool. Chin. J. Mech. Eng. 27, 79–85 (2014). https://doi.org/10.3901/CJME.2014.01.079

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  • DOI: https://doi.org/10.3901/CJME.2014.01.079

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