[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29, No. 5, pp.353-360

ISSN: 2508-5107 (Online)

Print publication date 15 Oct 2020

Received 26 Jun 2020 Revised 06 Aug 2020 Accepted 18 Aug 2020

DOI: https://doi.org/10.7735/ksmte.2020.29.5.353

Finite Element Analysis and Fabrication of an Ultrasonic Milling System

Hyunse Kim^a^{, *} ; Euisu Lima^a ; Kyunghan Kim^a

aEnergy Systems Research Division, Korea Institute of Machinery and Materials

Correspondence to: ^*Tel.: +82-42-868-7967 E-mail address: hkim@kimm.re.kr (Hyunse Kim).

Abstract

Ultrasound has been adapted in several industrial and manufacturing applications. In this study, an ultrasonic milling system, which can vibrate a rotating tool, was designed and fabricated. Firstly, a lead zirconate titanate (PZT) was designed using finite element analysis, and the obtained peak impedance value of 47.2 kHz agreed well with the fabricated PZT value of 48.0 kHz. Additionally, an aluminum waveguide with two PZT actuators was analyzed, whose impedance characteristic was predicted to be 43.8 kHz. Consequently, a milling waveguide was fabricated using the analysis results. The impedance value of the fabricated waveguide was measured to be 42.7 kHz, which was consistent with the finite element analysis result with an error of 2.6 %. The rotational speed and power output were measured to be 10,001 rpm and 122.6 W. Thus, the developed milling waveguide can be applied to the milling process of high-hardness metals.

Keywords:

Ultrasonic, Milling, Finite element method (FEM), Waveguide, Piezoelectric actuator

Acknowledgments

This research was supported by the Korea Evaluation Institute of Industrial Technology (KEIT), under the Korea government Ministry of Knowledge Economy.

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Hyunse Kim

Hyunse Kim is principal researcher in Korea Institute of Machinery and Materials.His research topics include megasonic cleaning systems for semiconductors, ultrasonic manufacturing processes and ultrasonic cooling.

E-mail: hkim@kimm.re.kr

Euisu Lim

Euisu Lim is principal technician in Korea Institute of Machinery and Materials.His research topics include megasonic and ultrasonic cleaning systems for semiconductors and flat panel displays (FPD).

E-mail: eslim@kimm.re.kr

Kyunghan Kim

Kyunghan Kim is principal researcher in Korea Institute of Machinery and Materials.His research interest is laser machining and laser deposition for three-dimensional (3D) printing equipments.

E-mail: khkim@kimm.re.kr