• Title/Summary/Keyword: 비트리파이드 본드

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Grinding Characteristics of Vitrified-bond CBN Wheel (비트리파이드 본드 CBN 휠의 연삭특성)

  • 원종호;김건희;박상진;안병민
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.11a
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    • pp.787-792
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    • 2000
  • Ultra-abrasives such as diamond and CBN have used to maintain accuracy and form deviation for superalloy etc. This study contains the dry cylindrical grinding of metals with Vitrified-bond CBN wheel. For various conditions of grinding speed, workpiece speed, grinding depth and feed speed of table, the grinding resistance, the surface roughness, and the material removal are measured and discussed. The results are as follows.

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The Grinding Characteristics of 5 kind metals for CBN Wheel (CBN휠에 의한 5종 재료의 연삭 특성 비교)

  • 원종호;김건희;안병민;박순섭;이진오
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.925-929
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    • 2001
  • Ultra-abrasives such as diamond and CBN have used to maintain accuracy and form deviation for superalloy etc. This study contains the dry cylindrical grinding of metals with Vitrified-bond CBN wheel and Resinoid-bond CBN wheel. For various conditions of grinding speed, workpiece speed, grinding depth and feed speed of table, the grinding resistance, the surface roughness, and the material removal are measured and discussed.

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A study Grinding Characteristic of CBN Wheel (CBN 휠의 연삭특성에 관한 비교연구)

  • 안병민;원종호;김건희
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2001.04a
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    • pp.315-320
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    • 2001
  • Ultra-abrasives such as diamond and CBN have used to maintain accuracy and form deviation for superalloy etc. This study contains the dry cylindrical grinding of metals with Vitrified-bond CBN wheel and Resinoid-bond CBN wheel. For various condition of grinding speed, workpiece speed, grinding depth and feed speed of table, the grinding resistance, the surface roughness, and material removal are measured and discussed.

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전해 인프로세스 드레싱법(ELID)을 이용한 고능률.고정도 원통연삭

  • 이득우
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1993.10a
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    • pp.161-165
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    • 1993
  • 최근 산업의 발달과 함께 제품의 고정도화,다양화,생산성 향상등의 요구에 의해 연삭가공에 있어서도 고능률.고정도가공이 주목되고 있다. 특히 반도체산업,광산업 등에 넓게 응용되고 있는 광학소자 가공에서는 가공정도와 가공능률이 동시에 달성되는 것에 대한 요구가 많지만, 이러한 광학소자의 가공에 있어서 기존의 연마방법은 가공정도와 가공능률에 한계가 있었다. 그런데 연삭가공에서 고능률,고정도가공의 한가지 방법으로 "전해 인프로세스드레싱(Electrolytic In-Process Dressing;ELID)연삭법"이 개발되어 고강도 메탈본드숫돌에 의한 초경합금,세라믹재료등의 경취성재료를 고품위 가공하고 있다. ELID연석법이란 숫돌의 다이아몬드나 cBN등의 연삭입자를 결합하고 있는 금속결합재를 전기분해에 의해 적당량 제거하여 일반적인 연삭과 같이 연삭입자를 연속적으로 돌출시켜 가공이 유지되도록 하는 연삭방법이다. 본 연구는 ELID연삭기술을 이용하여 원통연삭에서 철갈재료 및 세라믹재료의 고능률.고정도 가공특성을 살펴보았다. 원통연삭에서의 주철파이바본드숫돌 및 코발트본드숫돌에 의한 ELID연삭과 비트리파이드본드숫돌에 의한 일반연삭과의 고능률 가공특성을 비교하였다.

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High Efficient Cylindrical Grinding of Ferrous Materials Using Electrolytic In-process Dressing Method(ELID) (전해 인프로세스 드레싱법(ELID)을 이용한 철강재료의 고능률 원통연삭)

  • Lee, Deug Woo;Takahashi, I.;Ohomori, H.;Nakagawa, T.
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.8
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    • pp.99-105
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    • 1995
  • This paper provides a highly efficient grinding for ferrous materials using ELID-grinding method. The grinding efficiency using ELID gring method with CIFB-cBN wheel and CB-cBN wheel is compared with general grinding method with V-cBN wheel. This paper measured grinding ratio for plunge grinding and grinding resistance for traverse grinding in order to investigate grinding ability. The results show that ELID grinding methods is useful for the high efficient grinding of ferrous materials.

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Wear Characteristics of Diamond Wheel according to bond in Ceramic Grinding (세라믹 연삭에서 결합제에 따른 다이아몬드 휠의 마멸 특성)

  • 공재향;유봉환;소의열;이근상;유은이;임홍섭
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.11 no.4
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    • pp.75-81
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    • 2002
  • In this study, experiments were carried out to investigate the characteristics of grinding and wear process of diamond wheel during grinding ceramic materials. Normal component of grinding resistance was decreasing while increase of spindle speed. The resistance of vitrified bond wheel was less then that of resinoid bond wheel because of imbedded large holes on the surface of cutting edge. Surface roughness was decreasing while increase of spindle speed. The surface roughness using vitrified bond wheel was less than that of resinoid bond wheel because of small elastic deformation. After continuous finding of ceramics, cutting edge ratio of resinoid bond wheel decreased. For the case of vitrified bond wheel, cutting edge ratio did not change.

A Study on the Diamond Wheel Wear in Ceramic Grinding (세라믹 연삭에서 다이아몬드 숫돌 마멸에 관한 연구)

  • 공재향;유봉환;소의열;이근상;유은이
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2001.10a
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    • pp.344-348
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    • 2001
  • In this study, experiments were carried out to investigate the characteristics of grinding and wear process of diamond wheel grinding ceramic materials. Normal component of grinding resistance was decreasing while increase of spindle speed. The resistance of vitrified bond wheel was less then that of resinoid bond wheel because of imbedded large holes on the surface of cutting edge. Surface roughness was decreasing while increase of spindle speed. The surface roughness after using vitrified bond wheel was less than that of resinoid bond wheel because of small elastic deformation. After continuous grinding of ceramics, cutting edge ratio of resinoid bond wheel decreases. For the case of vitrified bond wheel, cutting edge ratio does not change.

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Research on Ultra-precision Grinding Work of Silicon Carbide (실리콘 카바이드의 초정밀 연삭 가공에 관한 연구)

  • Park, Soon-Sub;Won, Jong-Ho
    • Journal of the Korean Society for Precision Engineering
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    • v.26 no.9
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    • pp.58-63
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    • 2009
  • Silicon carbide (SiC) has been used for many engineering applications because of their high strength at high temperatures and high resistances to chemical degradation. SiC is very useful especially for a glass lens mold whose components demanded to the machining with good surface finish and low surface damage. The performance and reliability of optical components are strongly influenced by the surface damage of SiC during grinding process. Therefore, the severe process condition optimization shall be necessary for the highly qualified SiC glass lens mold. Usually the major form of damage in grinding of SiC is a crack occurs at surface and subsurface. The energy introduced in the layers close to the surface leads to the formation of these cracks. The experimental studies have been carried out to get optimum conditions for grinding of silicon carbide. To get the required qualified surface finish in grinding of SiC, the selection of type of the wheel is also important. Grinding processes of sintered SiC work-pieces is carried out with varying wheel type, depth of cut and feed using diamond wheel. The machining result of the surface roughness and the number of flaws, have been analyzed by use of surface profilers and SEM.