Kundrák, J.Gyáni, K.Szabó, G.2015-10-272015-10-272012Kundrák J. Research on coherences between the residual stresses and tool rake angle by hard turning / J. Kundrák, K. Gyáni, G. Szabó // Резание и инструмент в технологических системах = Cutting & tool in technological system : междунар. науч.-техн. сб. – Харьков : НТУ "ХПИ", 2012. – Вып. 81. – С. 152-161.https://repository.kpi.kharkov.ua/handle/KhPI-Press/17758A broad base of researchers are concerned in studying chip removal by hard turning. The reason for that is the most of the accurate selection of the cutting conditions to be able to exploit the advantages of hard turning. Among the parameters influencing the material removal, the geometry and edge formation of the cutting tool play a decisive role too. The efficient chip removal from hardened surfaces of about 60 HRC hardness can be ensured by edge formation that can be called special. In this paper the effect of the tool rake angle on the chip removal process is investigated, within this more detailed is the effect on the residual stress formation. The main method of the investigation is the FEM simulation, with which investigations were done in a wide interval of rake angle values.enArticle