• 제목/요약/키워드: CBN 연삭숫돌

검색결과 15건 처리시간 0.024초

초연삭입자와 ELID를 이용한 고정밀 고능률 연삭가공 (High Precision and Effective Grinding using Super Abrasives and ELID)

  • 구양;김경년
    • 한국기계가공학회지
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    • 제2권4호
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    • pp.25-32
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    • 2003
  • In this study, the grinding characteristics of CBN wheels, such as grinding force and surface roughness, have been compared and analyzed from various working conditions of spindle speed and depth of cut. To actualize high efficient grinding at ceramic and silicon nitride material, electrolytic in-process dressing (ELID) method has been applied at metal bonded diamond and CBN wheels. Super precision grinding using ductile mode at difficult-ta-cut materials could be performed.

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냉각 공기장치에 의한 환경 친화 연삭 연구 (A Study on Environment- Friendly Grinding by Using Cold Air)

  • 김남경;이동호;성낙창;송지복
    • 한국정밀공학회지
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    • 제15권9호
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    • pp.145-151
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    • 1998
  • In this study, the experimental and analytic investigation with cold air system has been performed for improving the working environment of the conventional grinding fluid. Very simple cold air system was developed which could replace by the conventional grinding fluid system. The identification of heat of grinding Bone is very important for precision grinding. The experimental data was analysed to investigate the heat which was transferred to the workpiece. It was found that 45∼55% of the total energy for dry grinding, 22∼28% for wet grinding, and 32∼35% for cold air system are conducted to the workpiece in grinding with cubic boron nitride wheel. Cubic boron nitride wheel could reduce the residual stress and thermal demage comparing with aluminium oxide wheel, because cubic boron nitride wheel has very high extreme thermal conductivity.

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티타늄 합금의 연삭에 관한 연구, Part2 : 초연마재를 사용한 연삭특성 (A Study on the Grinding of Titanium Alloy, Part2 : Grinding characteristics by using Superabrasives)

  • 김성헌;최환;이종찬;정선환
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2001년도 춘계학술대회 논문집
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    • pp.1076-1079
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    • 2001
  • This investigation reports the grinding characteristics of titanium alloy(Ti-6Al-4V). Grinding experiments were performed at various grinding conditions. The grinding forces and grinding force ratio were measured to investigate the grindability of titanium alloy with the Diamond and CBN wheel. To investigate the grinding characteristics of titanium alloy grinding force ratio and grinding ratio were measured. Surface profile of wheel was also measured with tracer and the ground surfaces and chip were observed with SEM. Grinding-ratio of titanium alloy was much lower than that of other materials. Grinding-ratio of titanium alloy with Diamond wheel was almost six times larger than that with CBN wheel.

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평면연삭에서의 연삭수명 평가 (Grinding Wheel Life in Surface Grinding)

  • 최성삼;구양;허정식
    • 한국기계가공학회지
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    • 제1권1호
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    • pp.101-108
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    • 2002
  • In the grinding process, the degree of the sharpness in wheel gram affects the surface roughness and the dimensional accuracy. If a wheel with dull grains is used, the grinding force will be increased and the surface roughness deteriorated. To produce a precision component, the magnitude of parameters related to the wear amount of a grinding wheel has to be limited. In this study, a variation of the grinding force and the surface roughness were measured to seek the machining characteristics of the W A and CBN wheels. From the wear amount of the grinding wheel and the removal rate of workpiece, the grinding ratio was calculated. And also the wheel life was determined at a rapid decreasing point of the grinding ratio. The difference between the surface of wheel-workpiece before grinding and after wheel life was clearly verified with a microscopic photo.

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평면연삭에서 연삭력 변화와 숫돌수명 (Variation of Grinding Force and Wheel Life in Surface Grinding)

  • 최성삼;구양;곽재섭;하만경;박노광
    • 한국정밀공학회지
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    • 제19권3호
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    • pp.59-65
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    • 2002
  • In the grinding process, the degree of the sharpness in wheel grain affects the surface roughness and the dimensional accuracy. If a wheel with dull grains is used, te grinding force will be increased and the surface roughness deteriorated. To produce a precision component, the magnitude of parameters related to the wear amount of a grinding wheel has to be limited. In this study, a variation of the grinding force and the surface roughness were measured to seek the machining characteristics of the WA and CBN wheels. From the wear amount of the grinding wheel and the removal rate of workpiece, the grinding ratio was calculated. And also the wheel life was determined at a rapid decreasing point of the grinding ratio. The difference between the surface of wheel-workpiece before grinding and after wheel life was clearly verified with a microscopic photo.