Frontiers of Mechanical Engineering >

2012 , Vol. 7 >Issue 3: 329 - 334

DOI: https://doi.org/10.1007/s11465-012-0303-x

RESEARCH ARTICLE

Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively heavy-duty turning

  • Genghuang HE ,
  • Xianli LIU ,
  • Fugang YAN
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  • The Key Laboratory of Advanced Manufacturing Technology & Cutting Tools, Harbin University of Science and Technology, Harbin 150080, China

Received date: 11 Dec 2011

Accepted date: 20 Mar 2012

Published date: 05 Sep 2012

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

The dynamic mechanical characteristics of excessively heavy-duty cutting were analyzed based on the cutting experiments with 2.25Cr-1Mo-0.25V steel used in hydrogenated cylindrical shells. By investigating the influence of dynamic mechanical characteristics on the tools’ failure in limited heavy-duty cutting processes, the model of dynamic shearing force in the cutting area was established. However, the experimental results showed that the dynamic shear flow stress in the cutting area greatly influenced the tools’ fatigue. The heavy-duty cutting tool was damaged in the form of a shearing fracture. Through a comprehensive analysis of the theory, the critical condition of the tools’ fracture under extreme loading was established.

Key words： extreme loading cutting; shear flow stress; dynamic cutting force; fatigue fracture

Cite this article

Genghuang HE , Xianli LIU , Fugang YAN . Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively heavy-duty turning[J]. Frontiers of Mechanical Engineering, 2012 , 7(3) : 329 -334 . DOI: 10.1007/s11465-012-0303-x

Acknowledgements

This research was supported by the National Natural Science Foundation of China (Grant No. 51175131) and the National High Technology Research and Development Program (No. 2009AA044302).

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