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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Improving Machining Quality of L-Shaped Thin-Walled Structure in Milling Process of Ti-Alloy (Ti-6Al-4V)

티타늄 합금(Ti-6A1-4V)의 밀링가공에서 L자형 얇은 벽 구조의 가공품질 향상

  • 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 : 2021.08.19
  • Accepted : 2021.09.29
  • Published : 2021.11.30
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Abstract

Titanium alloy (Ti-alloy) is widely used as a material for core parts of aircraft structures and engines that require both lightweight and heat-resistant properties owing to their high specific stiffness. Most parts used in aircraft have I-, L-, and H-shaped thin-walled structures for weight reduction. It is difficult to machine thin-walled structures owing to vibrations and deformations during machining. In particular, cutting tool damage occurs in the corners of thin-walled structures owing to the rapid increase in cutting force and vibration, and machining quality deteriorates because of deep tool marks on machined surfaces. In this study, milling experiments were performed to derive an effective method for machining a L-shaped thin-walled structure with Ti-alloy (Ti-6Al-4V). Three types of machining experiment were performed. The surface quality, tool wear, cutting force, and vibration were analyzed comprehensively, and an effective machining method in terms of tool life and machining quality was derived.

Keywords

References

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