Abstract
In the spindles of HSC (High Speed Cutting) machines with rolling bearings, higher temperatures in the bearings can be expected, which may affect the resistance to movement of the bearing itself. Therefore, to estimate these resistances, it is necessary to know the temperatures of the bearing components. The article presents the results of FEM simulation tests of temperature distribution in a rolling bearing. These studies were focused on assessing the influence of such features as the distribution of heat sources, the geometric form and size of the contact areas of the balls with the raceways, the conditions of heat convection to the environment and heat conduction inside the bearing. It has been recognized that FEM simulations for the default conditions offered by most commercial FEM systems can lead to out-of-the-box results. As part of the experimental research, conclusions from the simulation studies were verified.
Highlights
The application of High Speed Cutting (HSC) technology in machining requires, among others, machine tools with much higher kinematic parameters
One consequence of the increase in rotational speed is the greater amount of heat in the spindle rolling bearings, and higher temperatures
The article presents the results of simulation tests of temperatures and the resulting thermal deformations of bearing elements
Summary
The application of High Speed Cutting (HSC) technology in machining requires, among others, machine tools with much higher kinematic parameters. One consequence of the increase in rotational speed is the greater amount of heat in the spindle rolling bearings, and higher temperatures. Among other things, greater thermal deformation of the spindles and greater machining errors. Most of the literature reports on heat in bearings are devoted to this issue. The increase in temperature affects the resistance to movement of the bearing itself. This issue will be the subject of the article
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