Contact stresses on the rake face of cutting tools with PCBN in turning of hardened steel | Journal of Engineering Sciences

Contact stresses on the rake face of cutting tools with PCBN in turning of hardened steel

Author(s): Klimenko S. A., Klimenko S. An., Manokhin A. S., Mel’nichuk Yu. A., Kopіeikina M. Yu., Chumak A. A.

Affilation(s): V. Bakul Institute for Superhard Materials of the National Academy of Sciences of Ukraine, 2 Avtozavodskaya St., 04074, Kyiv, Ukraine

*Corresponding Author’s Address: atmu@meta.ua

Issue: Volume 4; Issue 1 (2017)

Dates:
Paper received: April 9, 2017
The final version of the paper received: May 25, 2017
Paper accepted online: May 29, 2017

Citation:
Klimenko S. A. Contact stresses on the rake face of cutting tools with PCBN in turning of hardened steel / S. A. Klimenko, S. An. Klimenko, A. S. Manokhin, Yu. A. Mel’nichuk, M. Yu. Kopіeikina, A. A. Chumak // Journal of Engineering Sciences. —  Sumy : Sumy State University, 2017. — Volume 4, Issue 1. — P. F8-E14.

DOI: 10.21272/jes.2017.4(1).f2

Research Area: Issues of Materials

Abstract: The paper presents the results of experimental study of determination of the geometric parameters of the contact zone of the chips with the rake face of cutting tools, as well as the shrinkage of chips during the final turning of hardened HVG steel by the tools from polycrystalline superhard materials with different contents of cubic boron nitride. Based on the experimentally established values of the cutting force components, a theoretical calculation of the level of maximum normal and tangential contact stresses for two types of tools: with high (BH) and low (BL) boron content has been conducted, and the nature of their distribution along the contact area of the chips with the rake face of the tools is shown. It is shown that during the turning of hardened HVG steel by the tool with composite of the BL group normal stresses up to 3.0 GPa arise in the contact zone and the tangential are 0.18 GPa at a cutting speed of 200 m/min, while turning by the tool with composite of group BH – 2.1 GPa and 0.58 GPa respectively, at a cutting speed of 100 m/min.

Keywords: cutting tool, polycrystalline superhard composite, cubic boron nitride, chip shrinkage, contact stresses, turning, hardened steel.

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Scientific journal "The Journal of Engineering Sciences"
ISSN 2312-2498 (Print), ISSN 2414-9381 (Online).

Faculty of Technical Systems and Energy Efficient Technologies
Sumy State University