IMPROVEMENT OF HEAVY MACHINE TOOL DYNAMICS BY PASSIVE DYNAMIC VIBRATION ABSORBER

Abstract

The article deals with evaluation of frequency responses of heavy machine tool for different attachment places of dynamic absorbers or dynamic vibration neutralizers in order to substantially suppress vibrations occurring during a machining process. The approach is based on methodology utilizing a multi-body model of a machine tool with flexible bodies in linear state-space form with added structure representing the absorber. The proposed methodology significantly decreases elapsed time requirements and makes possible to efficiently optimize even complicated problems. There are compared results obtained by utilization of two different objective functions as well as results for dynamic vibration absorber and neutralizer in the article.

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