Design and Finite Element Analysis of Axial Low-frequency Vibration Tool-holder

Abstract

Vibration-assisted drilling can significantly reduce the drilling force and cutting heat during deep hole machining, improve tools life and hole machining quality. As a branch of vibration drilling technology, axial low-frequency vibration-assisted drilling has a broad application prospect in the field of drilling because of its simple structure and easy implementation. A mechanical axial low-frequency vibrating tool-holder (ALVT) is designed, and the overall structure layout and working principle of the vibrating tool-holder are analyzed. The rotary motion of the machine tool spindle is used as the power input to drive the sinusoidal surface to rotate to achieve the amplitude output. The vibrating tool-holder model is simplified, and the ABAQUS finite element software is used to simulate the titanium alloy material for ordinary drilling and axial low-frequency vibration drilling (ALVD), and the axial force and cutting temperature changes are compared and analyzed. The results show that ALVD of titanium alloy can reduce the average axial force by about 47% and the cutting temperature by about 11%, which can significantly improve the drilling conditions and the quality of hole machining.

Structural design principle and experimental study of the mixed-frequency vibration tool holder

“…Jiao et al [18] utilized a novel annular flexible hinge as an elastic recovery mechanism and developed a low-frequency vibration-assisted drilling device. Liu et al [19] designed a tool holder with low frequency mechanical axial vibration. The tool holder uses the rotating motion of the spindle of the machine tool as the power input to drive the rotation of the sinusoidal surface and realize the amplitude output.…”