cBNホイールによる超高速鏡面研削 : ドレッシング条件および工作物周速度が表面品位に及ぼす影響(<小特集>生産加工・工作機械の規範2008)

概要

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There are strong demands for a machining process capable of reducing the suface roughness of sliding parts, such as auto parts and other components, with high efficiency. In this work, we attempted to grind hardened steel to a mirror-like surface finish with high efficiency using an ultrahigh speed grinding process with a coarse-grained cBN wheel. In the present study, we examined the effects of the rotary diamond dresser grain size, the dressing conditions and the work speed in an effort to optimize the grinding conditions for accomplishing mirror-like surface grinding with high efficiency. The results showed that the thickness of work affected layer reduces when the work speed was increased while the grinding efficiency was kept constant. Furthermore, under a finer dressing condition, increasing the work speed was effective upon reducing the deterioration of surface roughness due to grinding heat. However, grinding chatter is likely to occur with higher work speed.
社団法人日本機械学会の論文
2009-09-25