METHODOLOGY FOR DESIGN AND FOR OBTAIN STIFFNESS OF MACHINE TOOL MAIN SPINDLE UNITS WITH ANGULAR BEARING SYSTEMS

Claudiu-Ioan RUSAN, Iacob Liviu SCURTU, Mihai CIUPAN

Abstract


This paper presents a methodology for designing the main spindles of machine tools as well as obtaining their radial stiffness, especially those with angular contact ball bearing type rolling. Detailed information is given on the steps involved in determining the stiffness of main spindles, and a complete design flow for such systems is presented and described. The studies carried out are based on the design of a hand-clamped milling spindle for a chosen purpose, to which different types of arrangements will be applied to the bearing system. The aim is to determine the resulting deflections at the cartridge flange and their stiffness in order to determine the best performing spindle for the light milling application. Two methods of obtaining the deflections, one analytical and one numerical FEA, are used to verify the results obtained, in order to compare the results and the errors.


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References


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