FEM numerical analysis of tool holder of turning lathe

Abstract

Finite element modeling provides a method in understanding vibration processes. A study of a tool holder by a numerical Finite Element Method (FEM) was conducted. To analyze the modal properties of the tool holder, a 3D finite element model was developed using ANSYS software. It was found that decrease of the amplitude of a cantilever structure in vibro-impact motion depends on the location of the supports. In the experimental modal analysis, natural frequencies and mode shapes were measured for static conditions. The finite element model is validated by comparing the numerical to experimental results. The cantilever type tool holder tends to function as an effective damping element, which abates detrimental influence of unwanted vibrations. This phenomenon could be useful for cantilever type cutting tools, when it is necessary to increase the quality of the machining surface by decreasing the amplitudes of cutting edge vibrations.