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Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/35393
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Документ Finite element modelling of shear in hard turning(НТУ "ХПИ", 2010) Kundrak, Janos; Szabo, G.; Varga, Gy.The major problem of a choice of optimum finishing operation is solved at processing internal surfaces tempered of steels. Parameters by means of which it is obviously possible to carry out a choice of optimum operation turning or grindings are offered. The comparative analysis of efficiency of application of these operations has shown, that turning operation internal apertures at which the attitude of length to diameter does not exceed 1,1 is preferable.Документ Research of plastic strain and chip morphology in hard turning(НТУ "ХПИ", 2011) Kundrak, Janos; Szabo, G.In the case of several surfaces/parts, the turning of hardened materials replaced the machining applied before. The knowledge of strain mechanisms may advance the increase of material removal efficiency this appoint newer fields of application. This paper introduces the morphology and the plastic strain of the removed chip in the case of orthogonal (2D) cutting. The relationship between plastic strain and the change of cutting data has been investigated.Документ The effect of tool wear on chip formation in hard turning(НТУ "ХПИ", 2011) Szabo, G.; Kundrak, JanosThis paper compares the cutting process characteristics depending on the extent of the tool flank wear. The research was executed with Finite Element Method analysis. The researched cutting process was hard turning, when case hardened steel 16MnCr5, 62±2 HRC was cut by a cubic boron nitride tool insert (CBN). The examined data were the main cutting force, the passive force, the cutting temperature and the chip segmentation morphology.