Istraživanje konstrukciono-triboloških parametara kugličnih ležaja sa kosim dodirom tipa ZKLF sa aspekta optimalne osnovne funkcije

Abstract

From modern machine systems is expected to increase productivity (as many processing units per unit of time). Accordingly, the processing speeds must be significantly increased. With the increase in processing speed, it is expected to increase the number of revolutions. Increasing the number of revolutions most affects the transmission system elements of the machine system. The thesis focuses on the mounting of the threaded spindle, which is carried out via bearings of type ZKLF, the world leading manufacturer Schaeffler Technologies GmbH & Co. KG („INA“).The increased number of revolutions carries the increase of friction in the ball bearings itself, and with this the amount of newly created heat energy is higher. The created heat greatly affects deformations in the system itself.The aim of this dissertation is to study the constructive -tribological parameters of ball bearings with angular contact type ZKLF from the aspect of optimal basic function. These relevant influence parameters will then be identified, and then a mathematical model will be defined which will describe the behavior of the mentioned bearing type in real exploitation conditions, taking into account the thermal stability of the ball bearing. Given that this is a very complicated process occurring in the bearing when it is in operational state, the final result will be shown in the form of a temperature field which will be a sublimation image of the interaction of the constructive - tribological parameters for the aforementioned system of mounting. Due to the more pronounced nonlinearity between the influence parameters, the ANFIS network was used to define their functional dependence. Experimental and numerical methods were used for the study to predict the behavior of ball bearings with angular contact in real exploitation conditions.