• 제목/요약/키워드: 표면 정밀도

검색결과 1,543건 처리시간 0.282초

측정대상물의 표면조도에 따른 광파이버 센서 특성고찰 (The Characteristics of Fiber Optic Sensor on the Surface Roughness of Target)

  • 박한수;정택구;홍준희;이동주
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 춘계학술대회 논문집
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    • pp.283-286
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    • 2002
  • In fiber optic sensor, the error of the measurement is influenced by the surface roughness of the target and surroundings, especially the outside light. To reduce or modify this error, the sensitivity of the fiber optic sensor and the noise change by the surface roughness of the target should be known. The purpose of this paper is to observe the sensitivity of the fiber optic sensor and the noise according to the surface roughness of the target.

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반응표면법을 이용한 WPM의 exciter pole 설계 및 해석 (Exciter Pole Design and Analysis of WPM using Response Surface Method)

  • 육경진;박관태;이규종;김병택
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.916-917
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    • 2011
  • 본 논문에서는 WPM의 기동시 감자된 영구자석을 착자시키는 exciter pole의 최적설계에 대해 다룬다. 영구자석형 동기전동기의 성능을 결정짓는 자석의 잔류자속밀도를 최대로 만들기 위하여 반응표면법을 이용하여 exciter를 설계하였다. 목적함수는 영구자석 중심에서 의 자계의 세기이며 정밀도를 위하여 유한요소법을 통해 결과를 확인하였다.

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Sludge를 이용한 자기연마재 개발

  • 김희남;윤여권;김희원;하문호;안효중;심재환
    • 한국산업안전학회:학술대회논문집
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    • 한국안전학회 2003년도 추계 학술논문발표회 논문집
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    • pp.263-269
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    • 2003
  • 최근 반도체 및 식품, 의료기기를 비롯한 기간산업 분야의 고도화에 따라 사용되는 부품의 정밀도뿐만 아니라 청정도를 동시에 요구하는 추세이다. 따라서 기존의 기계적 가공방법으로는 공작물 표면에 미소한 가공흔적이 남게되어 표면의 요철부분에 칩(chip)등의 불순물이 잔재할 우려가 있으며, 또한 요철 부분에 미생물이 번식할 경우 청정도가 떨어져 산업위생상의 문제점이 발생하게된다.(중략)

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FDM 장치에서 쾌속조형물의 형상이 표면 거칠기에 미치는 영향 (Imfluence of Surface roughness on Rapid prototyping by FDM)

  • 전재억;정진서;하만경
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2001년도 춘계학술대회 논문집
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    • pp.1037-1041
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    • 2001
  • Competitive power is rapidly manufacture product required consumers. Therefore, modern industry have changed from small item many production to many item small production, rapid production is necessary thing at the product development. Thus, rapid prototyping is appeared. If the graphic model was made by CAD, the production can be made in short term. That provide what the part was directly tested by the worker. It provide believable data. This study is Imfluence of Surface roughness on Rapid prototyping by FDM(Fused deposition modeling).

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볼엔드밀 절삭에서 전해복합에 의한 표면거칠기 특성 (Characteristics of Surface Roughness by Compounding Electrolytic Machining in Ball End Milling)

  • 이영표;박규열
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2000년도 추계학술대회 논문집
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    • pp.959-962
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    • 2000
  • A new method compounding the electrolytic machining with ball end milling process to improve machined surface toughness was examined. From this study, it was confirmed that much smaller cutting force and finer surface roughness can be obtained in a certain condition of ball end milling and electrolytic machining conditions.

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AFM을 이용한 Head/Disk의 표면파손에 관한 고찰 (Surface damage analysis of Head/Disk interface using AFM)

  • 정구현;이성창;김대은
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1997년도 춘계학술대회 논문집
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    • pp.357-361
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    • 1997
  • In this work surface damage of head and disk of head disk drive was analysed using an Atomic Force Microscpoe. The initial damage of the disk occurred by generation of extermely small wear particles. Also it was show that wear particles tend to pile up near the front side of the slider. The surface damage mechanism of drag test and contact-start-stop test was found to be quite similar.

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반응표면분석법을 이용한 기구의 강건설계 (Robust Design of Mechanisms Using the Response Surfae Analysis)

  • 한형석;박태원
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 춘계학술대회 논문집
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    • pp.743-748
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    • 1996
  • In this study a method for a robust design of mechanisms is proposed. The method used in the experimental anlysis and quqlity engineering is applied for mechanisms design. A mathematical model for a mechanism is estimated by the responese surface analysis and the robust design can be carried out. The method can be applied for mechanisms generally. Furthermore because the method can be used in the design stage using the computer model, improved quality and lower cost of the product is achieved even in the design stage.

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캐터필러형 믹서의 제작 및 표면 특성 연구 (Fabrication of caterpillar mixer and its surface characterization)

  • 한창수;박준기;윤여환
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2006년도 춘계학술대회 논문집
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    • pp.541-542
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    • 2006
  • A micro-size caterpillar mixer has been recently used fur desktop chemical factory and so attractive due to small investment fund for arranging the factory and high efficiency by mixing in sub micro-level region. We report the fabrication of caterpillar mixer and its surface treatment for enhancement of mixing performance. We used the

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하드디스크의 표면 파손 기구에 관한 고찰 (Surface Damage Mechanism of Hard Disk)

  • 정구현;김대은;김상국
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 추계학술대회 논문집
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    • pp.716-720
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    • 1996
  • In this work the surface damage mechanism of hard disk was investigated. Experiments were peformed to simulate the contact during start and stop. Evidence of significant surface damage appeared after 20,000 cycles. It was found that despite higher hardness, the slider showed more signs of damage than the disk. Optical microscopy showed that the surface was damaged by abrasive action as well as adhesion of wear debris.

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