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Ultra High-Speed Cutting Experiment under the Cutting Condition that Cutting Speed Exceeds Plastic Wave Speed of Workpiece

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Abstract:

Raising a cutting speed to above speed of a plastic wave of a workpiece material induces the high levels of the hydrostatic stresses in the shear zone, because a plastic wave traveling there becomes a shock wave. In order to ascertain the cutting phenomena occurring under the ultra high-speed cutting condition, the cutting experiments of a pure lead with cutting speeds of up to 140 m/s are performed with a high-speed impact cutting tester developed. The experimental result reveals that the cutting mechanism, especially chip formation, changes remarkably and the friction angle at the tool-chip interface rises in the ultra high-speed cutting. It can be explained that these phenomena arise from the plastic shock wave in the shear zone.

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Periodical:

Advanced Materials Research (Volume 325)

Pages:

327-332

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.325.327

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Online since:

August 2011

Authors:

Jun Shinozuka, Masato Sando, Tasuku Horie

Keywords:

Cutting Mechanism, Cutting Tester, Plastic Wave, Shock Wave, Ultra High Speed Cutting

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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