Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Finite Element Analysis of an Ultrasonic Tool Horn for Pattern Forming

초음파 패턴성형을 위한 공구혼의 설계 및 유한요소해석

  • Seo, Young-Soo (Graduate School of NID Fusion Technology., Seoul National Univ. of Science and Technology) ;
  • Park, Keun (Mechanical Design and Automation Engineering, Seoul National Univ. of Science and Technology)
  • 서영수 (서울과학기술대학교 NID 융합기술대학원) ;
  • 박근 (서울과학기술대학교 기계설계.자동화공학부)
  • Received : 2010.10.20
  • Accepted : 2010.12.13
  • Published : 2011.03.01
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Abstract

In this study, a direct pattern forming process on a plastic film using ultrasonic vibration energy is investigated. A tool horn containing micro-patterns is attached to an ultrasonic power supply, and is used to press a plastic film with ultrasonic vibration in order to replicate micro-patterns on the surface of the plastic film. To replicate micro-patterns with high accuracy, the tool horn should be designed to allow only the longitudinal vibration, not the transverse vibration. For this purpose, the design of a tool horn is investigated through finite element analysis, from which the resulting natural frequency of the tool horn can be adjusted in the range of the ultrasonic power supply. The analysis result is then reflected on the optimal design and fabrication of the tool horn. The validity of the developed tool horn is discussed through pattern-forming experiments using the ultrasonic vibration of the developed tool horn.

Keywords

References

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