PECULIARITIES OF CONTACT INTERACTION TOOLS - DETAIL FOR VARIOUS SUPERHARD MATERIALS BASED ON ANALYSIS OF ACOUSTIC EMISSION SIGNALS

  • L. N. Devin V. N. Bakul Institute for superhard materials of NAS of Ukraine
  • S. V. Rychov V. N. Bakul Institute for superhard materials of NAS of Ukraine
  • S. N. Ivanov V. N. Bakul Institute for superhard materials of NAS of Ukraine
Keywords: acoustic emission, friction process in the machining, cutting conditions, fine turning

Abstract

This work is present the influence of the choice of instrumental superhard material and fine-turning regimes on the level of acoustic emission signals. For this, when turning an aluminum alloy during friction of the back surface of the tool, the processed material for single-crystal cutters made of natural, synthetic diamond, and also the hard alloy VK6, the signals AE were divided into two parts. It was possible to determine the differences in the recorded AE signals depending on the selected cutting material, and also analyze the influence of depth, feed and cutting speed on the standard deviation of the AERMS signal, as a result of which it was possible to determine the experimental constants. Based on the experimental results, it can be concluded that the highest level of the AEToch signal occurs at the sharpening with a hard alloy blade VK6, less high – with a sharpening with a synthetic diamond cutter, the lowest level of the AEToch signal for a natural diamond cutter. AETr with diamond-cut of natural diamond is practically close to zero, while for a carbide cutting tool this signal is higher several times

Published
2018-05-31
Issue
Vol 21 (2018): Rock Destruction and Metal-Working Tools – Techniques and Technology of the Tool Production and Applications
Section
Development and implementation of equipment and tools equipped with hard alloys