Měření vybraných parametrů integrity povrchu vnitřních ložiskových kroužků

Abstract

The presented dissertation deals with the measurement of selected parameters of the surface integrity of the inner thin-walled bearing rings, which are prescribed on the production drawing during the so-called hard machining. The main goal is to replace or eliminate the grinding of these rings by progressive machining methods using modern cutting tools with different machining parameters. The work was created in cooperation with the company KOYO Bearings and follows up on the solved dissertation work of Ing. Josef Procházka, Ph.D. and several diploma and bachelor theses. The work is divided into several chapters. After the introductory chapter, the goals of the dissertation are defined, which I want to meet. The first part provides an overview of the current state of surface integrity evaluation in terms of geometric accuracy (straightness deviations and roundness deviations), surface roughness parameters and residual stresses that remain on the surface of the rings after machining. The measurement methods, measurement strategies and equipment used in the measurements are described below. One of the subchapters is also the evaluation of measurement errors and their evaluation of the maximum permissible error. The next three chapters are devoted exclusively to experimental activities, which comprehensively include the evaluation of internal thin-walled bearing rings of selected surface integrity parameters, where the evaluation criteria include: straightness, roundness, parallelism, profile and surface parameters of surface roughness and residual stresses. The individual chapters briefly describe the method of evaluation, the principles of measuring measuring devices on which experimental tests were performed. In the conclusion, the obtained results and their evaluation in terms of whether they meet the expected parameters or not are presented, and the benefits for the scientific field of Engineering Technology, Research and possible practical use are determined. The results will be further published and will be used for further research in this area.