Факультет робототехніки та штучного інтелекту
Постійне посилання на фондhttps://repository.lntu.edu.ua/handle/123456789/3434
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Item type:Наукова стаття, Research of Dynamic Processes of Working Medium Movement in a Vibrating Bunker(Springer, Cham, 2025) Symonyuk, Volodymyr; Denisyuk, Viktor; Lapchenko, Yuriy; Ptashenchuk, Vitaliy; Reshetylo, OleksandrThe article presents the results of the study of the regularities of the formation of the circulating vortex motion of the working medium and the behavior of the vibrating hopper body under conditions of symmetric shock-impulse loading. It was established that such loads cause slow circulating motion of the medium, the intensity of which increases with the asymmetric nature of the impacts. This motion has the form of a ring or arc-shaped vortex, covering the entire volume of the working medium. For the analysis of vortex processes, it is advisable to use the integral form of the law of conservation of momentum within the control volume. It is shown that the average circulation speed depends on the impact force, the initial velocity of the vibrating hopper and the mass of the working medium, and the angular velocity of the vortex motion is proportional to the average circulation speed.Item type:Наукова стаття, Intermittent Abrasive Tool for Machining the Butt Ends of Bearing Rings(Springer, Cham, 2025) Ptashenchuk, Vitaliy; Denisyuk, Viktor; Lapchenko, Yuriy; Symonyuk, Volodymyr; Reshetylo, OleksandrA design of an intermittent abrasive tool has been developed for processing flat surfaces, in particular the ends of bearing rings. The presented design of the abrasive wheel allows to reduce the temperature of the surface layer and ensure its high cutting ability, which makes it possible to stabilize the quality parameters of the surface layer and avoid product defects. The use of the technology of supplying cooling fluid through the working surface of the abrasive wheel directly into the processing zone under pressure made it possible to minimize the width of the groove of the intermittent wheel and ensure its high cutting ability by preserving a large number of abrasive grains and cleaning the surface of the wheel from grinding products. The use of the presented design of the intermittent tool made it possible to improve the roughness of the ends of the bearing rings by 0.5 microns and increase the hardness of the surface layer by 1.5-2 HRC units, avoid burns, product defects and increase the efficiency of the process of flat abrasive processing.