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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of Environmental Factors Affecting the Machining Accuracy

가공정밀도에 영향을 미치는 환경요소 분석

  • Kim, Young Bok (Intelligent Optical Module Research Center, KOPTI.) ;
  • Lee, Wee Sam (Intelligent Optical Module Research Center, KOPTI.) ;
  • Park, June (Intelligent Optical Module Research Center, KOPTI.) ;
  • Hwang, Yeon (Intelligent Optical Module Research Center, KOPTI.) ;
  • Lee, June Key (Department of Materials & Engineering, Chonnam National UNIV.)
  • 김영복 (한국광기술원 지능형광학모듈연구센터) ;
  • 이의삼 (한국광기술원 지능형광학모듈연구센터) ;
  • 박준 (한국광기술원 지능형광학모듈연구센터) ;
  • 황연 (한국광기술원 지능형광학모듈연구센터) ;
  • 이준기 (전남대학교 신소재공학부)
  • Received : 2021.04.11
  • Accepted : 2021.05.10
  • Published : 2021.07.31
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Abstract

In this paper, to analyze the types of surface morphology error according to factors that cause machining error, the experiments were conducted in the ultra-precision diamond machine using a diamond tool. The factors causing machining error were classified into the pressure variation of compressed air, external shock, tool errors, machining conditions (rotational speed and feed rate), tool wear, and vibration. The pressure variation of compressed air causes a form accuracy error with waviness. An external shock causes a ring-shaped surface defect. The installed diamond tool for machining often has height error, feed-direction position error, and radius size error. The types of form accuracy error according to the tool's errors were analyzed by CAD simulation. The surface roughness is dependent on the tool radius, rotational speed, and feed rate. It was confirmed that the surface roughness was significantly affected by tool wear and vibration, and the surface roughness of Rz 0.0105 ㎛ was achieved.

Keywords

Acknowledgement

This work was supported by the Technology Innovation Program (Development of GMP Equipment and Manufacturing Technology for High Temperature Forming, # 20010775), funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). This work was supported by the Academic Research Fund [2021-1446] of Chonnam National University.

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