The Newly Developed CBN Cutting Tool

  • Hiroshi Eda
  • Kozo Kishi
  • Hiroshi Hashimoto


The newly developed cutting tool, Sumiboron BN200, is made of a special ceramic which is heat resistant, wear resistant and has a lower affinity for a workpiece material. The following experimental results were obtained:
  1. 1)

    Grains of BN200 showed attritious wear in a wide range of cutting conditions.

  2. 2)

    The bonding material of BN 200 was removed to such an extent by formed chips that grains were projected. Abrasive wear was partly observed.

  3. 3)

    In dry cutting of ASTM4118 and wet cutting of ASTM 5046, the tool life of BN200 was found to be increased by respectively 3~5.7 times that of a conventional CBN cutting tool.



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  1. (1).
    N. Tabuchi: Performance of “SUMIBORON BN200”, Sumitomo Electoric, Technical Review, No.18 12 (1978) 57.Google Scholar
  2. (2).
    T. Uchida: Cutting Operation in CBN Sintered Cutting Tool, Japan Machinist, No.4 (1979) 1.Google Scholar
  3. (3).
    M.C. Show: Metal Cutting Principles, MIT Press (1965) 12–1.Google Scholar
  4. (4).
    Y. Yamada: Stiffness Matrix in Plastic Elastic Problems of Continua, Seisan-Kenkyu (Monthly Jour, of the Institute of Industrial Science, University of Tokyo), 19, 3(1967) 75.Google Scholar

Copyright information

© The Department of Mechanical Engineering, University College of Swansea 1981

Authors and Affiliations

  • Hiroshi Eda
    • 1
  • Kozo Kishi
    • 1
  • Hiroshi Hashimoto
    • 2
  1. 1.Faculty of EngineeringUtsunomiya UniversityUtsunomiya-shiJapan 321-31
  2. 2.Research and Development DepartmentNippon Kogaku K. K.Chiyoda-ku, TokyoJapan 100

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