• Title/Summary/Keyword: level of precision

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Optimization of the Structure of the High-precision press by Tabuchi Methods (다구찌 법을 이용한 정밀 프레스 구조의 최적화)

  • 현소영;김권희
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.11a
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    • pp.567-570
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    • 2000

  • Optimization of structure of a high-precision stamping press structure is performed by combination of Taguchi Method and finite element analysis. Too much difference in the stiffness between hydrostatic bearing linear guide and press structure is observed. Efforts are made to level up the stiffness of press structure to the level of hydrostatic bearing's. Some important design parameters are identified and discussed.

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Characterization of ultra Precision Grinding Plate for GMR Head Manufacturing by Measuring Frictional Force (마찰력 측정을 통한 GMR 헤드 제작용 초정밀 연마판의 특성화)

  • 노병국;김기대
    • Journal of the Korean Society for Precision Engineering
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    • v.20 no.7
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    • pp.78-83
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    • 2003

  • Characterization of an ultra precision grinding plate for GMR head manufacturing is performed by measuring frictional forces between the grinding plate and the advanced ceramic Two kinds of methods of producing the precision grinding plates are presented: texturing and micro-channeling. Texturing is effective in terms of production time but micro-channeling excels in quality control. It is found that the frictional coefficient of a precision grinding plate decreases as the impregnation of diamond grain onto the precision-grinding plate progresses, and remains unchanged once the impregnation process is successfully completed, even after 100 revolutions of the precision-grinding plate against the advanced ceramic under 40 N of normal force. Therefore, the measurement of the frictional coefficient can replace costly and time-consuming process of estimating the level of impregnation of diamond grain on the precision-grinding plate, which has been performed by using scanning electron microscope, and be employed as an index to determine the level of impregnation of diamond grain.

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