Abstract
Key performance parameters of the CNC machine tool are limited by its dynamic behavior. To improve the performance of machine tools, we need to understand their dynamic behavior in the design stage itself. Modal analysis serves as an important tool to determine inherent modal properties of the structure. The present work is aimed at determining modal parameters of the CNC lathe bed, as a step towards predicting the dynamics of machine tools. Modal analysis has been performed by both finite element simulation and experimental method. The experimental modal analysis is carried out by exciting the bed using an impact hammer and measuring its response to obtain its modal parameters. The correlation shows good agreement between two results.
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