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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of the Elasticity Modulus of Jig Material on Blade Edge Shape in Grinding Process of Sapphire Medical Knife

사파이어 의료용 나이프의 연삭가공에서 지그의 탄성계수가 날 부 형상에 미치는 영향

  • Shin, Gun-Hwi (Dept. of Mechanical Engineering, Gyeongnam National University of Sci. and Tech.) ;
  • Lee, Deug-Woo (Nano Fusion Technology, Pusan National Univ.) ;
  • Kwak, Tae-Soo (Dept. of Mechanical Engineering, Gyeongnam National University of Sci. and Tech.)
  • 신건휘 (경남과학기술대학교 기계공학과) ;
  • 이득우 (부산대학교 메카트로닉스공학과) ;
  • 곽태수 (경남과학기술대학교 기계공학과)
  • Received : 2017.02.22
  • Accepted : 2017.03.21
  • Published : 2017.04.30
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Abstract

This study focuses on the effect of the elasticity modulus of jig material on blade edge shape in the grinding process of a sapphire medical knife. The ELID grinding process was applied as the edge-grinding method for sapphire material. Carbon steel and copper have been selected as the hard and soft jig materials, respectively. The blade edge created by ELID grinding was measured by a surface roughness tester and optical microscope. The shape of the ground edge and surface roughness were compared using the measurement results. As a result, it was found that chipping in the blade edge of the sapphire knife occurred more than in the case of jig material with a high-elasticity modulus because of the high normal force in the grinding process. Moreover, the maximum height surface roughness, $R_{max}$,of the ground surface was higher in the case of the jig material with a high-elasticity modulus due to the difference in elasticelongation. It was considered to lead to chipping from the notch effect.

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References

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