The paper presents the influence of coatings applied with the use of PVD method on cutting tools on the wear of the tool and compares it with an uncoated P25 cemented carbide plate. During the experiment, two types of TiAlN coatings were used, applied in various proportions, as well as TiN coating. During the tests, the average width of the wear band on the flank face in B VBBzone and the width of KBcrater were monitored. Moreover, the scanning analysis of the tool was conducted in order to determine the intensity of adhesive wear. The lowest values of selected tool wear indicators were found out with the use of TiAlN coating applied in eight layers in the proportions 33/67% -TiN/TiAlN. The scanning analysis proved the highest adhesive wear of the uncoated P25 cemented carbide plate, as well as increased abrasive wear of the flank face and the formation of a crater in comparison with coated plates.
This paper deals with hard turning using a cutting tool with Xcel geometry. This is one of the new geometries, and there is not any information about Xcel wear in comparison to the conventional geometry. It is already known from cutting tools producers that using the Xcel geometry leads to higher quality of machined surface, perticularly surface roughness. It is possible to achieve more than 4 times lower Ra and Rz values after turning than after using conventional geometry with radius. The workpiece material was 100Cr6 hardened steel with hardness of 60 ± 1 HRC. The machine used for the experiment was a lathe with counter spindle DMG CTX alpha 500, which is located in the Centre of Excellence of 5–axis Machining at the Faculty of Materials Science and Technology in Trnava. The cutting tools made by CBN were obtained from Sandvik COROMANT Company.
The aim of this paper is to investigate the cutting tool wear in hard turning process by the Xcel cutting tool geometry.
The article deals with the cutting tool wear measurement process and tool life of ball nose end mill depending on upward ramping and downward ramping. The aim was to determine and compare the wear (tool life) of ball nose end mill for different types of copy milling operations, as well as to specify particular steps of the measurement process. In addition, we examined and observed cutter contact areas of ball nose end mill with machined material. For tool life test, DMG DMU 85 monoBLOCK 5-axis CNC milling machine was used. In the experiment, cutting speed, feed rate, axial depth of cut and radial depth of cut were not changed. The cutting tool wear was measured on Zoller Genius 3s universal measuring machine. The results show different tool life of ball nose end mills depending on the copy milling strategy.
Marek Kordík, Mária Čilliková, Jozef Mrazik, Juraj Martinček, Miroslav Janota and Henryk Nicielnik
The aim of this paper is analysis of turned bearing ring made of material 14109 (DIN 100Cr6) without heat treatment. For the analysis a mechanical destructive method was chosen. Analysis focused on existence and character of residual stresses after turning operation of bearing ring by tool with different level of wear. The experiment reveals the relationships between residual stress creation and cutting tool wear.
The present paper presents comparative results of the forecasting of a cutting tool wear with the application of different methods of diagnostic deduction based on the measurement of cutting force components. The research was carried out during the milling of the Duralcan F3S.10S aluminum-ceramic composite. Prediction of the toolwear was based on one variable, two variables regression Multilayer Perceptron(MLP)and Radial Basis Function(RBF)neural networks. Forecasting the condition of the cutting tool on the basis of cutting forces has yielded very satisfactory results.
D. Morozow, J. Narojczyk, M. Rucki and S. Lavrynenko
In the paper, the issue of the cermet cutting tools wear resistance was addressed. The tool inserts made out of cermet composites were exposed to the ion implantation with ions of nitrogen N+ and with combination of nitrogen N+ and aluminum Al+ ions. In order to assess the impact of the ion implantation, the samples of stainless steel EZ6NCT25 were turned with the standard cutting tools and with the inserts after ion implantation. The results in general confirmed better wear resistance of the ion implanted inserts. In particular, they performed 20-40% smaller friction. After some time, when the destruction of the implanted surface layer took place, the friction coefficient rose up to the value typical for non-implanted inserts. For the implanted inserts, the wear index VB appeared to be lower, and even visual assessment revealed distinguishably smaller wear than in case of tools without ion implantation.
Rudolf Zaujec, Peter Pokorný, František Jurina, Tomáš Vopát and Vladimír Šimna
The article deals with the tool life of ball nose end mills during finish milling of weld deposit. The aim was to determine and compare the wear of ball nose end mill for different types of ball end milling strategies, as well as to specify particular steps of the measurement process. For tool life test, DMG DMU 85 monoBLOCK 5-axis CNC milling machine was used. In the experiment, the cutting speeds, feed rates, axial and radial depth of cut were constant. The coated cemented carbide was used as tool material. The cutting tool wear was measured on Zoller Genius 3s and laser Blum Micro Compact NT. The results show different achieved tool life of ball nose end mills depending on the finish milling strategy.
Adam Janásek, Robert Čep, Lenka Čepová, Jiří Kratochvíl, Vladimír Vrba and Lenka Petřkovská
 P. ASTAKHOV, Viktor. The assessment of cuttingtoolwear. International Journal of Machine Tools & Manufacture. 2004, č. 44.
 NESLUSAN M, et. al. Experimentalni metody v triskovem obrabeni. Zilina: EDIS Zilina, 2007. ISBN 978-80-8070-711-8.
 CERNAK. Tool-life Tests of Inserts. Ostrava: Department of Machining and Assembly. Faculty of Mechanical Engineering, VŠB -Technical University Ostrava, 2007, Graduation thesis, head: Ing. Robert Čep, Ph.D., MSc.
 CEP, R.; NESLUSAN, M
creatics at high speed machining. Technologické inženýrstvo - Technological engineering. Scientific- Technical Society by University of Žilina, Vol. VI, number 2/2009, pp. 58 - 61, ISSN: 1336-5967.
 SADÍLEK, M., KOUSAL, L. Nová technologie výroby lůžek pro vyměnitelné břitové destičky frézovacích nástrojů (ověřená technologie). Ostrava: VŠB-TU Ostrava, Fakulta strojní, kat. 346, 2012, ev.č. 026/08-10-2012_OT.
 SADÍLEK, M., KRATOCHVÍL, J., PETRŮ, J., ČEP, R., ZLÁMAL, T., STANČEKOVÁ, D. Cuttingtoolwear monitoring with the use of
Rao N.: Prediction of cuttingtoolwear, surface roughness and vibration of work piece in boring of AISI 316 steel with artificial neural network. Measurement 51 (2014) 63-70.
 Sortino M., Totis G., Prosperi F.: Modeling the dynamic properties of conventional and high-damping boring bars. Mechanical Systems and Signal Processing 34 (2013) 340-352.
 Rubio L., Loya J.A., Miguélez M.H., Fernández-Sáez J.: Optimization of passive vibration absorbers to reduce chatter in boring. Mechanical Systems and Signal Processing 41 (2013) 691