Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Control of Polarity by Magnetic Array Table in Magnetic Abrasive Polishing Process

자기연마가공에서 마그네틱 어레이 테이블에 의한 극성 제어

  • Received : 2010.05.13
  • Accepted : 2010.09.11
  • Published : 2010.11.01
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Abstract

It is very difficult to polish non-magnetic materials by the magnetic abrasive polishing (MAP) process because magnetic force is required for MAP, but the magnetic force for non.magnetic materials is low. In this study, we aimed to develop a magnetic array table and control the magnetic polarity such that the magnetic force can be increased for the MAP of non-magnetic materials. The newly designed magnetic array table has 32 electro magnets, and the magnetic polarity of each electro-magnet can be easily controlled by changing the electric polarity. It was analytically verified that the magnetic flux density of non-magnetic materials can be varied by varying the applied magnetic polarity.

비자성체의 자기연마 공정에서는 공작물 표면에 발생하는 자속밀도가 매우 낮아 자기연마입자에 작용하는 절삭력이 현저히 낮아진다. 따라서 공작물 반대편에 전자석을 설치하여 공작물 표면의 자속밀도를 효과적으로 증가 시킬 수 있다. 본 연구에서는 전자석 배열 테이블을 비자성체의 자기연마에 활용하기 위해 전자석 배열에 따른 자속밀도 및 극성변화에 대한 시뮬레이션 및 실험적 검증을 수행하였다. 그 결과 전자석이 같은 극성을 가질 때 보다 중심부분 전자석을 기준으로 주변 전자석이 반대의 극성을 가질 때 중심부분의 전자석에서 가장 높은 자속밀도를 가지는 것을 확인할 수 있었다.

Keywords

References

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Cited by

  1. A Study of Micro-Channel Fabrication by Micro-Milling and Magnetic Abrasive Deburring vol.35, pp.8, 2011, https://doi.org/10.3795/KSME-A.2011.35.8.899