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research-article

Experiments and Finite Element Simulation of Ultrasonic Assisted Drilling

[+] Author and Article Information
Hossein Paktinat

Department of Manufacturing, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
paktinat_hossein@yahoo.com

Saeid Amini

Department of Manufacturing, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
amini.s@kashanu.ac.ir

1Corresponding author.

ASME doi:10.1115/1.4040321 History: Received November 20, 2017; Revised May 12, 2018

Abstract

In this study, ultrasonic assisted drilling (UAD) is performed to investigate the effect of ultrasonic vibrations on common difficulties existed in conventional drilling (CD). UAD is a promising and advanced technique by which a harmonic movement with frequency in the range of ultrasonic and low amplitude is superimposed in the movement of work material or cutting tool. The study is conducted both experimentally and numerically; at first a UAD system is designed, manufactured and carried out on a milling machine and experimental tests are accomplished and in the following experimental results are supported by the help of 3D finite element simulation. Finally, the dependent parameters such as the burr height and cylindricity of the ultrasonically and conventionally drilled workpiece are measured and evaluated. Briefly, it was proved that intermittent movement of drill bit in the direction of feed rate results in broken and discontinuous chips by which built-up-edge is reduced and hole quality improves. In addition, the burr height which is known as unwanted projection of material at the exit surface of pieces can be decreased notably if UAD is considered.

Copyright (c) 2018 by ASME
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