• 제목/요약/키워드: micro machining

검색결과 851건 처리시간 0.05초

자기연마법을 응용한 미세금형부품의 초정밀 연마 (Ultra Precision Polishing of Micro Die and Mold Parts using Magnetic-assisted Machining)

  • 안병운;김욱배;박성준;이상조
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.1832-1835
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    • 2003

  • This paper suggests the selective ultra precision polishing techniques for micro die and mold parts using magnetic-assisted machining. Fabrication of magnetic abrasive particle and their polishing performance are key technology at ultra precision polishing process of micro parts. Conventional magnetic abrasives have disadvantages. which are missing of abrasive particle and inequality between magnetic particle and abrasive particle. So, bonded magnetic abrasive particles are fabricated by several method. For example, plasma melting and direct bonding. Ferrite and carbonyl iron powder are used as magnetic particle where silicon carbide and Al$_2$O$_3$ are abrasive particle. Developed particles are analyzed using measurement device such as SEM. Possibility of magnetic abrasive and polishing performance of this magnetic abrasive particles also have been investigated. After polishing, surface roughness of workpiece is reduced from 2.927 $\mu\textrm{m}$ Rmax to 0.453 $\mu\textrm{m}$ Rmax.

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미세 패턴의 디버링을 위한 전해-자기연마 복합가공의 적용과 공정 최적화에 관한 연구 (Application and Parameter Optimization of EP-MAP Hybrid Machining for Micro Pattern Deburring)

  • 이성호;곽재섭
    • 한국기계가공학회지
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    • 제12권2호
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    • pp.114-120
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    • 2013

  • An EP(Electrolytic Polishing)-MAP(Magnetic Abrasive Polishing) hybrid process was applied to remove burr on the micro pattern. Micro pattern fabrication processes are combined with micro milling and EP-MAP hybrid process for deburring. Depending on the micro milling conditions which are applied, micro burrs are formed around the side and top of the pattern. The EP-MAP deburring is used to remove these burrs effectively. To optimize removal rate and form error in the EP-MAP hybrid process, a design of experiment was performed. The effect of deburring process and form error of micro pattern are evaluated via SEM images and the results of AFM.

  • KSCI