Diminution of chatter vibration in single point cutting tool holder using finite element analysis (FEA)

Abstract

The present paper demonstrates the modal and harmonic response analysis of a single point cutting tool using the Finite Element Analysis (FEA). In this current research, the High-Speed Steel (HSS) tool holder has been coated using epoxy-granite for different square shanks. The coating ranges from 1 to 5 mm for both variable (a mm × a mm) and fixed (27 mm × 27 mm) square shank. Furthermore, the graphs between amplitude and frequency have been plotted for evaluating the damping ratio by using half power bandwidth theory. From modal and harmonic analysis, a maximum damping ratio of 0.2227 and 0.136 is achieved by using a 5 mm layer coating of epoxy-granite for variable (17 mm × 17 mm) and fixed (27 mm × 27 mm) square shank respectively. The amplitudes for variable and fixed square shanks utilizing 1 mm coating of epoxy-granite are relatively close i.e., 1.19E + 06 mm/s2 and 1.21E + 06 mm/s2 respectively. The damping ratio increases significantly for 1 mm coating in both variable and fixed square shanks (0.0900 and 0.0974) in comparison to the bare tool holder (0.0006).