[특허]Method and apparatus for polishing, and lapping jig

[미국특허] Method and apparatus for polishing, and lapping jig 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B24B-049/00
출원번호	US-0736003 (2000-12-13)
우선권정보	JP-0030454 (2000-02-08)
발명자 / 주소	Sone, Shunsuke Yanagida, Yoshiaki Nishioka, Teruaki Suto, Koji Sugiyama, Tomokazu
출원인 / 주소	Fujitsu Limited
대리인 / 주소	Greer, Burns & Crain, Ltd.
인용정보	피인용 횟수 : 4 인용 특허 : 13

초록 ▼

Disclosed herein is a method of polishing a workpiece having a plurality of resistance elements by operating a plurality of bend mechanisms to push/pull the workpiece with respect to a polishing surface. This method includes the steps of measuring a shape of the workpiece, calculating an operational amount of each bend mechanism according to the shape measured, pressing the workpiece on the polishing surface with the bend mechanisms according to the operational amount calculated, and updating the operational amount according to a working amount of the workpiece. According to this method, magnetic heads included in the workpiece can be stably polished.

대표청구항 ▼

1. A method of polishing a workpiece having a plurality of resistance elements by operating a plurality of bend mechanisms to push/pull said workpiece with respect to a polishing surface, comprising the steps of: measuring a shape of said workpiece; calculating an operational amount of each of said bend mechanisms according to said shape measured; pressing said workpiece on said polishing surface with said bend mechanisms according to said operational amount calculated; and updating said operational amount according to a working amount of said workpiece. 2. A method according to claim 1, wherein said calculated operational amount is reached by changing said operational amount by a predetermined unit amount. 3. A method according to claim 2, wherein said unit amount is decided according to a difference between an updated value of said operational amount and an unupdated value of said operational amount. 4. A method according to claim 2, wherein said unit amount is set for each of said bend mechanisms. 5. A method according to claim 2, wherein said unit amount is set according to an update amount of said operational amount. 6. A method according to claim 2, wherein said working amount as a reference of updating said unit amount or said operational amount is set according to a working history. 7. A method according to claim 1, further comprising the step of performing simulation on the working to said workpiece. 8. A method according to claim 7, further comprising the step of detecting abnormality of a working apparatus including said bend mechanisms according to the result of said simulation. 9. A method according to claim 1, wherein said operational amount is calculated according to the measured height of each of said resistance elements. 10. A method according to claim 9, wherein a difference between the height of a certain one of said resistance elements and the average of the heights of the two resistance elements adjacent to said certain resistance element is calculated. 11. A method according to claim 10, wherein when said difference is greater than a predetermined value, the height of said certain resistance element is replaced by a value calculated by spline interpolation.

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

Cole Robert A. (Newark CA), Automated system for lapping air bearing surface of magnetic heads.
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Yumoto Kenji (Miyota-machi JPX), Jig for headpiece aggregate machining and method for manufacturing a thin film magnetic head.
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Yanagida Yoshiaki,JPX ; Yokoi Kazuo,JPX ; Suto Koji,JPX ; Watanuki Motoichi,JPX ; Sugiyama Tomokazu,JPX, Lapping apparatus including a lapping base having pads.
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Church Mark A. (Los Gatos CA) Deshpande Annayya P. (San Jose CA) Desouches Alain M. (Santa Cruz CA) Pal George S. (Saratoga CA) Salo Michael P. (San Jose CA) Ullah Muhammad I. (Morgan Hill CA), Lapping control system for magnetic transducers.
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Koji Sudo JP; Yoshiaki Yanagida JP, Lapping machine, lapping method, and row tool.
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Cheprasov Sergei ; Grosslight Gordon J., Manufacture of thin-film magnetic heads.
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Bealle John (Richardson TX), Method of contouring the recording surface of a magnetic head transducer.
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Lam Chung-Fai (San Jose CA) Yong Yew-Nam (Fremont CA), Multi-adjustable row transfer tool.
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Hao Shanlin X., Multi-point bending of bars during fabrication of magnetic recording heads.
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Fujita Yasutoshi,JPX ; Yamaguchi Masao,JPX ; Sasaki Masahiro,JPX ; Kozu Masaki,JPX ; Barada Kazuhiro,JPX, Processing jig.
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Kanzo Noboru,JPX ; Sasaki Masahiro,JPX ; Kozu Masaki,JPX, Processing jig.
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Masaki Kozu JP; Masahiro Sasaki JP, Processing jig.
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Hennenfent Douglas J. (New Hope MN) Holmstrand Allan L. (Bloomington MN) Kracke Alan G. (Minnetonka MN), Workpiece carrier.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Schuh, Gregory W.; Lytle, Tracy, Bridge row tool.
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Guruz, Unal Murat; Lee, Edward Hin Pong; Nikitin, Vladimir; Yang, Michael Ming Hsiang; Yao, Yuan, Method for manufacturing a slider for a perpendicular magnetic recording head.
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Seki, Takateru; Wenjun, Zhou; Takeda, Kazuo; Kubota, Takefumi, Method for manufacturing thin film magnetic heads.
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Moravec, Mark D.; Supavasuthi, Chakkrit; Yaemglin, Theera, Systems and methods for correcting read/write overlay errors in the manufacture of magnetic transducers for storage drives.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method and apparatus for polishing, and lapping jig 원문보기