Considerations on Damping Characteristics of Turning Tools

Abstract

This paper presents the experimental investigation on the vibration characteristics such as damping characteristic and equivalent mass of turning tools. The obtained results are as follows : (1) The damping characteristic is influenced by the bending stiffness of tool shank, overhang length, contact area at tool shank, and the Vickers hardness of shank materials ; (2) The equivalent mass of the tool system is influenced by the overhang length and shank cross-sectional area ; (3) The effects of these parameters on the vibration characteristics are estimated by brief empirical expressions.