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

Author

Listed:
  • Naď Milan
  • Čičmancová Lenka
  • 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)

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.

Suggested Citation

  • Naď Milan & Čičmancová Lenka & Hajdu Štefan, 2016. "Application of Numerical Simulation for the Analysis of the Processes of Rotary Ultrasonic Drilling," Research Papers Faculty of Materials Science and Technology Slovak University of Technology, Sciendo, vol. 24(39), pages 151-158, December.
    • Handle: RePEc:vrs:repfms:v:24:y:2016:i:39:p:151-158:n:20
    DOI: 10.1515/rput-2016-0030
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