2023 № 99 Різання та інструменти в технологічних системах

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/71408

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  • Ескіз
    Документ
    Roughness investigation of single and double cutting marks on face milled surface
    (Національний технічний університет "Харківський політехнічний інститут", 2023) Nagy, Antal; Kundrak, Janos
    In machining with defined cutting edge tools, in some rotational tool processes (e.g. face milling) the tool edge may scratch the surface of the workpiece one more time, depending on the cutting conditions, during one revolution of the tool. As a result, the topographies with single or double cutting marks will be different from each other. The deviation, depending on its size, can also affect the functional performance (e.g. friction conditions) of the operating surfaces. In this article, face-milled topographies created with a symmetrical setting and with single or double milling marks are compared according to the magnitude of the roughness and the degree and nature of the inhomogeneity.
  • Ескіз
    Документ
    Analysis of the effect of varying the cutting ratio on force components and surface roughness in face milling
    (Національний технічний університет "Харківський політехнічний інститут", 2023) Felhő, Csaba
    Traditional machining processes, such as face milling, still play a very important role in the production of machine parts and are the subject of ongoing research. One important area of research is the investigation of high-feed milling processes. However, due to the increased feed per tooth value fz, it is advisable to reduce the depth of cut (aₚ) in order to maintain the cutting forces at an appropriate level. In this way, the ratio of these two technological parameters, the so-called cutting ratio, changes and we can move into the range of inverse machining, where aₚ / fz < 1. In this paper, the consequences of this change is investigated on the surface roughness and the components of the cutting force, and it is discussed how the optimal cutting ratio can be found.