Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Improvement of STS316L Milling Characteristics According to Coolant Spray Position

절삭유 분사위치에 따른 STS316L의 밀링가공 특성 개선

  • Kim, Su Hwan (Dept. of Mechanical System Design Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Park, Min Soo (Dept. of Mechanical System Design Eng., Seoul Nat'l Univ. of Science and Technology)
  • 김수환 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 박민수 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2016.09.09
  • Accepted : 2016.11.18
  • Published : 2017.05.01
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Abstract

In the case of high-strength or low thermal conductivity material milling, tool breakage occurs easily because of the high friction temperature. Therefore, the effectiveness of the coolant supply is very important for proper tool cooling. As the manually adjustable joint mechanism nozzle is generally used for coolant supply, the cooling efficiency is very low. It also has a bad influence on the workspace environment because of coolant scattering. In this study, the milling characteristics of STS316L were investigated according to the coolant spray position based on the automatic adjustable system. Tool wear and surface roughness were measured according to the coolant spray position. Through these experiments, the effectiveness of the fabricated system was explained.

고강도 재료나 열전도성이 낮은 재료의 밀링 가공시 가공 부위에서 발생하는 높은 마찰열로 인해 공구 파손 등이 심각하게 발생할 수 있으므로 절삭유 공급이 매우 중요하다. 기존의 절삭유 공급 방식은 수동식 관절 구조를 활용한 방법으로 과도한 양을 분사함에도 불구하고 효과적인 결과를 얻기 힘들었다. 또한, 작업 중 비산으로 인해 작업장 환경에도 큰 악영향을 미쳤다. 이에 본 연구에서는 자동으로 분사 위치 조절이 가능한 장치에 기반하여 절삭유 분사위치에 따른 STS316L 의 밀링가공 특성을 분석하였다. 그 결과, 절삭유 공급 위치 변화에 따라 공구 마모와 표면 거칠기 변화가 관찰되었으며 이를 통해 제작된 장치의 효용성을 보였다.

Keywords

References

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