정보저장시스템학회논문집 (Transactions of the Society of Information Storage Systems)
- 제3권2호
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- Pages.66-72
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- 2007
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- 1738-6845(pISSN)
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- 2288-2022(eISSN)
자기유변유체를 이용한 하드디스크 슬라이더의 표면연마를 위한 기초연구
A preliminary study on the surface finishing of a hard disk slider using magnetorheological (MR) fluid
- 정봉수 (중앙대학교 기계공학부 대학원) ;
- 장경인 (연세대학교 기계공학부 대학원) ;
-
민병권
(연세대학교 기계공학부) ;
-
이상조
(연세대학교 기계공학부) ;
-
석종원
(중앙대학교 기계공학부)
- Jung, B.S. ;
- Jang, K..I. ;
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Min, B..K.
;
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Lee, S.J.
;
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Seok, J.
- 발행 : 2007.06.01
초록
Surface finishing using magnetorheological (MR) fluid is useful to finish small but not too small workpieces such as those in a few millimeter scale. However, due to the high surface hardness, this finishing process does not seem to be suit for applying to a hard disk slider. In this work, a preliminary study is performed on the finishing of the hard disk slider surface with a mixture of an MR fluid and diamond powder. During a wheel type MR finishing process, centrifugal force is found to be a major factor to cause a reduction in material remove rate (MRR), which is supported by a theoretical model. To facilitate this founding, the rotational speed of tool is confined to 500rpm while a rectilinear alternating motion with the mean speed, which is equivalent to the rotational speed, is additionally applied to the workpieces. As a consequence, MRR of about 2 times of the sole rotational case is obtained. This paper shows that MR finishing process can be used to polish a hard material in millimeter scale efficiently by controlling the speeds of the tool and the workpiece.
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