INVESTIGATION OF FLANK WEAR WHEN FINISH TURNING OF HIGH STRENGTH STEEL WITH CBN CUTTING INSERT.

The article of authors is concentrated to an analysis of the certain topics connected with the process of finish turning, which are: finishing as a technological process, purpose-built machining, tool wear and tool life of cutting materials, criteria of flank wear, measuring methods of wearing of the cutting tools, types of the cutting materials and their using in the common practise. In the theoretical part of this article, there are results of different studies published, for which the goal was to review the dependency of cutting parameters on the tool life of the cutting material, comparison of the flank wear of stated cutting materials during certain cutting parameters of the process, analysing of the results of experiments oriented to tool life of cutting materials. In practical part, there is the description of particular parts connected with the own performed experiments, for which the aim was to determine the proper cutting parameters for the process of finish turning of hardened material by the hard-cutting material on the base of polycrystalline cubical boron nitride, evaluation and analysis of the results, determination of the conclusions from performed experiments and particular recommendations for the effective using of investigated cutting material. [ABSTRACT FROM AUTHOR]