Application of Numerical Simulation for the Analysis of the Processes of Rotary Ultrasonic Drilling

Naď Milan (), Čičmancová Lenka () and Hajdu Štefan ()
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Naď Milan: Institute of Informatics, Automation and Mechatronics, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Ulica Jána Bottu 278125, 917 24 Trnava, Slovak Republic
Čičmancová Lenka: Institute of Informatics, Automation and Mechatronics, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Ulica Jána Bottu 278125, 917 24 Trnava, Slovak Republic
Hajdu Štefan: Institute of Informatics, Automation and Mechatronics, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Ulica Jána Bottu 278125, 917 24 Trnava, Slovak Republic

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2016, vol. 24, issue 39, 151-158

Abstract: Rotary ultrasonic machining (RUM) is a hybrid process that combines diamond grinding with ultrasonic machining. It is most suitable to machine hard brittle materials such as ceramics and composites. Due to its excellent machining performance, RUM is very often applied for drilling of hard machinable materials. In the final phase of drilling, the edge deterioration of the drilled hole can occur, which results in a phenomenon called edge chipping. During hole drilling, a change in the thickness of the bottom of the drilled hole occurs. Consequently, the bottom of the hole as a plate structure is exposed to the transfer through the resonance state. This resonance state can be considered as one of the important aspects leading to edge chipping. Effects of changes in the bottom thickness and as well as the fillet radius between the wall and bottom of the borehole on the stress-strain states during RUM are analyzed.

Keywords: Numerical simulation; Finite element method; Rotary ultrasonic drilling; Edge chipping (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:repfms:v:24:y:2016:i:39:p:151-158:n:20

DOI: 10.1515/rput-2016-0030

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