• 제목/요약/키워드: Single Crystal Diamond Tool

검색결과 42건 처리시간 0.028초

니켈절삭시 CBN, 소결 및 단결정 다이아몬드 공구의 마멸과 예측에 관한 연구 (A Study on the Tool Wear and Prediction of CBN, Poly Crystal and Single Crystal Diamond Tools in Cutting of Nickel)

  • 성기석;김정두
    • 대한기계학회논문집
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    • 제17권1호
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    • pp.120-130
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    • 1993
  • 본 연구에서는 니켈의 가공시 나타나는 공구의 마멸에 대한 정량화 및 절삭변 수와의 연관성에 대한 연구는 그 자체가 마멸에 대한 데이터 베이스 측면에서 중요하 고, 이러한 접근방법으로는 연구가 거의 이루어지지 않았다는 측면에서도 큰 의미를 갖는다. 본 연구는 특히 경도가 큰 공구인 CBN, 소결 다이아몬드(poly crystal dia- mond 이하 PCD), 단결정 다이아몬드(single crystal diamond 이하 SCD)공구를 사용하 여 니켈의 절삭에서 나타나는 공구의 마멸에 대한 분석을 선행한 후 수집한 정보로부 터 절삭속도, 이송, 절삭깊이 및 공구의 nose반경이 공구의 마멸 및 표면의 성상(su- rface quality)에 미치는 영향에 대하여 고찰하였고 절삭조건의 변화에 따라 마멸에 대한 예상 곡선을 구하였다.

영상처리를 이용한 초정밀가공용 다이아몬드 공구의 마멸 측정 (Wear Mwarsurement of Single Crystal Diamond Tool Using Image Processing)

  • 양민양
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 춘계학술대회 논문집
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    • pp.135-139
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    • 1996
  • In this a paper, a new method to measure the wear of the single crystal diamond(SCD) tool using image processing is presented. To increase resoultion, high magnifying lens is used and to enlarge the measurement field of view, a image region matching method is applied. The shape of SCD tool is modeled by mathematical analysis. Cutting edge chipping and wear are calculated by the model. This method is proved to be efficient in detecting a few micron of wear and cutting edge loss by chipping along the whole cutting edge.

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철강재료의 다이아몬드절삭에 있어서 단속절삭가공법의 적용에 의한 공구마모억제 (Control of Tool Wear in Diamond Cutting of Steels by Intermittent Cutting Method)

  • 송영찬;근진건태랑;박천홍;삼협준도
    • 한국정밀공학회지
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    • 제25권6호
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    • pp.40-46
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    • 2008
  • Ultraprecision cutting of steels with geometrically defined single crystal diamond tools is handicapped by excessive tool wear. This paper presents a new approach to suppress the wear of single crystal diamond tool in cutting of steels. In general, it is said that the wear of diamond tool is caused by chemically reactive wear under high temperature and high pressure conditions. In order to suppress such chemical reactions, the time of contact between the diamond tool and the steel work in cutting was controlled by employing the intermittent cutting method such as fly-cutting. Series of intermittent cutting experiments have been carried out to control the tool-work contact time by changing one cycle of cutting length and cutting speed. The experimental results were shown that the tool wear was much dependent on the contact time regardless of the cutting speed, and that the wear was much suppressed by reducing the tool-work contact time. It is expected that the steels can be successfully cut with a single crystal diamond tool by controlling the contact time.

전해니켈도금된 대면적 롤금형 가공시 단결정 다이아몬드공구의 마모에 관한 연구 (Wear of Single Crystal Diamond(SCD) Tools in Ultra Precision Turning of Electro-Nickel Plated Drum)

  • 이동윤;홍상현;강호철;최헌종;이석우
    • 대한기계학회논문집A
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    • 제33권7호
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    • pp.621-628
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    • 2009
  • Nickel-phosphorus alloys are attractive materials for diamond turning applications such as fabrication of large optics and other high precision parts. It is also well-known that the higher phosphorus content of the alloys minimizes the diamond tool wear. Due to the weakness of electoless nickel plating that the phosphorus contents is limited to 13-14% (wgt), increased attention has been paid at electro-nickel plating which enables the alloys with 15-16% phosphorus. In this study, experiments were carried out to observe the wear characteristic of single crystal diamond tools in micro-grooving of electro-nickel plated drums. The experiments shows that long distance (50km) machining of micro-grooving on electro-nickel plated drum is possible with a single crystal diamond tool without any significant tool wear and defective machined surface.

단결정 다이아몬드 절삭에 의한 과공정 Al-Si합금의 경제성에 관한 연구 (A study on the economics of hypereutectic Al-Si alloy cutting with single crystal diamond tool)

  • 이은상;김정두
    • 대한기계학회논문집
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    • 제18권5호
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    • pp.1096-1105
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    • 1994
  • A hypereutectic Aluminum-Silicon Alloy is widely used in the parts of automobile because of high-resistance and good strength. In this study, the cutting of hypereutectic A1-Si alloy for economical production was investigated by simulation. Tool life and the extraction rate of Si particles is inversely proportional to the depth of cut. When decreasing the depth of cut, the reduction of single crystal diamond tool cost and tool change time is achieved.

무전해 니켈의 초정밀 절삭에 의한 표면거칠기 연구 (A Study on the Surface Roughness in Ultra-Precision Cutting of Electroless Nickel)

  • 권우순;김동현;난바의치
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.538-541
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    • 2003
  • Ultra-precision machining was carried out on a electroless nickel materials using single crystal diamond tools. The effects of the cutting velocity, the tool length, the tool nose radius, the feed rate and depth of cut on the surface roughness were studied. In this paper, the cutting condition for getting nano order smooth surface of electroless nickel have been examined experimentally by the ultra-precision machine and single crystal diamond tools. And also. the surface roughness was measured by the three dimension

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다이어몬드 공구를 이용한 Ni 도금층의 정밀미세가공 시 절삭성 (Machinability in Micro-precision Machining of Ni-Plated Layer by Diamond Tool)

  • 김선아;박동삼
    • 한국생산제조학회지
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    • 제18권6호
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    • pp.636-641
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    • 2009
  • Recently, expansion of micro-technology parts requires micro-precision machining technology. Micro-groove machining is important to fabricate micro-grating lens and many micro-parts such as microscope lens, fluidic graphite channel etc. Conventional groove fabrication methods such as etching and lithography have some problems in efficiency and surface integrity. But, mechanical micromachining methods using single crystal diamond tools can reduce these problems in chemical process. For this reason, microfabrication methods are expected to be very efficient, and widely studied. This study deals with machinability in micro-precision V-grooves machining of nickel plated layer using non-rotational single crystal diamond tool and 3-axis micro stages. Micro V-groove shape, chip formation and tool wear were investigated for the analysis of machinability of Ni plated layer.

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천연 다이아몬드 인선형태에 의한 Al 합금의 경면절삭에 관한 연구 (Study on mirror-like surface machining of Al alloy with edge form of single crystal diamond tools)

  • 김정두
    • 대한기계학회논문집
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    • 제14권6호
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    • pp.1515-1522
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    • 1990
  • 본 연구에서는 천연다이아몬드의 인선형상을 R형과 S형으로 구분하여 제작하 고 미세이송과 절삭속도 변화를 주어 이에 얻어지는 표현거칠기, 칩 생성기구 및 경면 성을 검토하였다.

Al합금의 초정밀 선삭가공 (A Study on the Ultra-Precision Turning of Al Alloy)

  • 김우순;채왕석;김동현;난바의치
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2003년도 춘계학술대회 논문집
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    • pp.416-421
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    • 2003
  • To obtain the surface roughness with range from l0nm to In n need a ultra-Precision machine, cutting condition and the study of materials. And n have to also consider the chip and vibration of diamond tool during processing. In this paper, the cutting conditions for getting mirror surface of aluminum alloy have been examined experimentally by using ultra-precision turning and single crystal diamond tool. In generally, the cutting conditions have effect on the surface roughness in ultra-precision turning. The result of surface roughness was measured by the ZYGO New View 200.

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