Abstract
In the paper the results of the characterization of the chatter phenomenon in the band sawing process are presented. In particular, the influence of the cutting speed and of the distance between the cutting blade supports on chatter characteristics was investigated. In addition to the cutting forces, and emitted sound, the machine vibrations described by the measured acceleration signals were used to characterize the chatter. Based on an analysis of these signals, a hysteresis of the chatter onset and chatter die-out cutting speeds was observed. The observed chatter hysteresis indicates that the chatter onset in band sawing is caused by a Hopf-like bifurcation, and that cutting speed is a promising parameter for chatter control. Additionally a strong effect on chatter characteristics of the distance between the cutting blade supports was experimentally confirmed.
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Acknowledgments
The research work described in this paper was partly financed by the European Union, European Social Fund. It was implemented within the framework of the Operational Program for Human Resources Development for the period 2007–2013, Priority axis 1: Promoting entrepreneurship and adaptability, Main type of activity 1.1.: Experts and researchers for competitive enterprises.
The support of the Slovenian Research Agency, the research program P2-0241 Synergetics of Complex Systems and Processes, is also gratefully acknowledged.
The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers, which have improved the presentation.
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Thaler, T., Potočnik, P., Govekar, E. (2014). Experimental Characterization of Chatter in Band Sawing. In: Dalpiaz, G., et al. Advances in Condition Monitoring of Machinery in Non-Stationary Operations. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39348-8_60
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DOI: https://doi.org/10.1007/978-3-642-39348-8_60
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