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

  • 제20권2호
  • /
  • Pages.23-31
  • /
  • 2021
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  • 1598-6721(pISSN)
  • /
  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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이중 주파수 지원 절삭으로 가공된 타원형 딤플의 특성

Characterization of Elliptical Dimple Fabricated with Dual Frequency Vibration Assisted Machining

  • Park, Gun Chul (School of Mechanical Engineering, Yeungnam UNIV.) ;
  • Ko, Tae Jo (School of Mechanical Engineering, Yeungnam UNIV.) ;
  • Kurniawan, Rendi (School of Mechanical Engineering, Yeungnam UNIV.) ;
  • Ali, Saood (School of Mechanical Engineering, Yeungnam UNIV.)
  • 투고 : 2020.10.13
  • 심사 : 2020.11.01
  • 발행 : 2021.02.28
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초록

Surface texturing is a promising route to reduce the friction forces between two surfaces in sliding contact. To this end, the fabrication of micro dimples is one of the most widely used surface texturing methods. According to published results, textured surfaces with elliptical micro dimples offer the best friction performance. Therefore, we fabricated elliptical micro dimples on carbon steel (SM45C) by using dual frequency vibration assisted machining. High and low frequencies of 16.3 kHz and 230 Hz were applied to the 3D resonant elliptical vibrator. The 3D resonant elliptical vibrator with a triangular cubic boron nitride insert was assembled on a computer numerically controlled turning lathe. Oval micro dimples of various profiles were manufactured on carbon steel. In terms of the profile of the elliptical micro dimples, the experimental results indicated that the average micro dimple width and depth were 112 ㎛ and 7.7 ㎛. These dimensions are closely related to the cutting conditions and can be easily controlled.

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참고문헌

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