多気孔メラミンボンドホイールの開発と金型材料の精密研削 : 遊離砥粒を併用した自生作用の制御

概要

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Melamine-bonded wheels with diamond fine grains and pore structures were developed for smooth and mirrorlike finish of die materials. White fused alumina (WA) grains were added into a grinding fluid to enable self-dressing of the wheel by rolling WA grains between the wheel and a work material. The effect of WA grains on the self-dressing was examined through the measurement of grinding force, removal rate and wheel wear rate; that could be obtained under the process of surface grinding of a sintered tungsten carbide. It was clarified that the removal rate and the wheel wear rate could be controlled by varying the WA grain size and grain density in the fluid. Namely, the wheel wear was generated actively in proportion as the WA grain density In the grinding fluid became high. Also, it was confirmed that the wheels wear rate overcame the removal rate in the case that the WA grain size in the fluid became larger than 30% value of diamond grains that were contained in the wheel.
社団法人日本機械学会の論文
1996-02-25