• Title/Summary/Keyword: diamond machining

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Tool-Wear Characteristics of the Ceramic, CBN and Diamond Tools in Turning of the Presintered Low Purity Alumina (저순도 알루미나 예비소결체 선삭시의 세라믹, CBN 및 다이아몬드 공구의 마멸 특성)

  • Lee Jae-Woo
    • Journal of the Korean Society for Precision Engineering
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    • v.23 no.1 s.178
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    • pp.80-88
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    • 2006

  • In this study, unsintered and presintered low purity alumina ceramics were machined with various tools to clarify the machinability and the optimum cutting conditions. The main conclusions obtained were as fellows. Machined with ceramic tool, the ceramics presintered at the temperature range of $1000\~1100^{\circ}C$ showed the best machinability due to the adhesion formed in weared surface within a certain cutting speed range. In the above combination and conditions, the ceramic tool showed the highest productivity through all experiments. The life of CBN tool was longer in machining of the ceramics presintered at $1000^{\circ}C$ than in the case of that presintered at $600^{\circ}C$, but the diamond tool showed adverse tendency. In machining of the ceramics presintered at $1000^{\circ}C$, the ceramic tool exhibits the longest tool life in high speed, the tool lives became extremely worse in the order of CBN tool and diamond tool. However, in the case of the ceramics presintered at $600^{\circ}C$, the diamond tool shows the longest tool life, the tool lives was much worse in the order of CBN tool and ceramic tool.

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Machining of Micro Groove using Diamond Tool (다이아몬드 공구를 이용한 미세 홈 가공)

  • 임한석;김창호;김봉향;안중환
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.04b
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    • pp.75-79
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    • 1995

  • A cutting experiment using diamond tool was performed to make the die cabity which is composed of micro groove with mirror surface. Fine cutting depth was generated by the elastic recovery of the modified tool holder on the conventional M/C. Surface roughness and profile were investigated with cutting speed and depth and through the low cutting speed of 10mm/min, Rmax 0.005 .mu. m or less of machined surface could be achieved.

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