Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Vibration Characteristics and Machining Quality in Thin-wall Milling Process of Titanium Alloy

티타늄 합금의 얇은 벽 밀링가공에서 가공방법에 따른 진동특성 및 가공품질에 관한 연구

  • Kim, Jong-Min (Graduate School, Gyeongsang National Univ., and KJF) ;
  • Koo, Joon-Young (Bethel Machine Tool) ;
  • Jun, Cha-Soo (Department of Industrial and Systems Engineering & Engineering Research Institute, Gyeongsang National University)
  • 김종민 (경상국립대학교 대학원, 한국치공구공업(주)) ;
  • 구준영 (벧엘기계(주)) ;
  • 전차수 (경상국립대학교 산업시스템공학부, 공학연구원)
  • Received : 2021.11.03
  • Accepted : 2022.05.19
  • Published : 2022.06.30
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Abstract

Titanium alloy (Ti-6Al-4V) has excellent mechanical properties and high specific strength; therefore, it is widely used in aerospace, automobile, defense, engine parts, and bio fields. Particularly in the aerospace field, as it has a low specific gravity and rigidity, it is used for the purpose of increasing energy efficiency through weight reduction of parts, and most have a thin-walled structure. However, it is extremely difficult to machine thin-walled shapes owing to vibration and deformation. In the case of thin-walled structures, the cutting forces and vibrations rapidly increase depending on the cutting conditions, significantly affecting the surface integrity and tool life. In this study, machining experiments on thin-wall milling of a titanium alloy (Ti-6Al-4V) were conducted for each experimental condition with different axial depths of cut, radial depth of cut, and machining sequence. The machining characteristics were analyzed, and an effective machining method was derived by a comprehensive analysis of the machined surface conditions and cutting signals.

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References

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