高硬度鋼材研削におけるSG砥石の研削性能

概要

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WA/5SG, Q and cBN wheel are used as an acceptable wheel for grinding of the high hardness steel material. In this research, it chiefly aimed to compare WA wheel with 5SG wheel by the grinding performances in the high hardness steel material. In these experiments, surface plunge grinding was carried out; the horizontal spindle surface grinder was used. The grinding force in the process after dressing and the change in the finished surface roughness were compared. The results are follows. (1) The diamond dresser is kept constant shape using the single point diamond dressing unit. (2) 5SG wheel of a dry method showed an excellent grinding performance by micro self-sharpening. (3) In the grinding ratio(GR.) of grinding high hardness steel material, cBN wheel was the highest and, next, order of 5SG wheel and WA wheel.
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