BORAZON CBNホイールの研削性能に及ぼす砥粒保持力の影響

概要

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From this study, it was found that the capability of abrasive retention in a CBN wheel gave a remarkable influence on the grinding performance. The grinding performance was studied by a cylindrical plunge grinding for the test wheels which had different abrasive retention levels. From the results it is concluded that the following is a key to improve the grinding performance and that these exactly result in the improvement of abrasive retention capability. (1) An optimum T5UKIDASHIRYO in a resin bonded CBN wheel will be about 30 gym. (2) In a vitrified bonded CBN wheel only CBN abrasive should be bonded. (3) Grade should be harder. (4) Grain size should be coarser. (5) A vitrified bond which has a chemical bonding is rather recommended than a resin bond of mechanical retention. By actualizing the above items, a dressing interval of 265.0 mm^2/mm and a grinding ratio of 27 000 (300 times of a conventional wheel), over 8 times and 2. 5 times of an initial wheel respectively, were obtained. Also a high performance vitrified bonded CBN wheel, which could be easily dressed by a single point diamond dresser compared with a resin bonded CBN wheel, was successfully developed.
公益社団法人精密工学会の論文
1984-06-05