Study on Dressing of Grinding Wheel (4th Report)

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  • 研削砥石のドレッシングに関する研究(第4報)
  • 研削砥石のドレッシングに関する研究-4-クラッシュドレッシング
  • ケンサク トイシ ノ ドレッシング ニ カンスル ケンキュウ 4 クラッシュド
  • Grinding Performance of Wheel with Crush Dressing
  • クラッシュドレッシング

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Crush dressing process and grinding performance of crush-dressed wheel are experimentally investigated, analyzing dressing force, grinding force, wheel wear, surface roughness and so on. SEM observations of cutting edges and measurements of characteristic values to quantify the condition of cutting edges on the wheel surface are performed. Main results obtained in this paper are as follows : (1) There exists three distinct states in crush dressing process ; transient state, steady state and crush-out state. (2) The higher the number of revolution of grinding wheel in crush-out dressing is, the larger grinding force and the less surface roughness and wheel wear rate become. (3) Higher infeed rate of crush roll results in sharper cutting edges and less cutting edge density, which leads to lower grinding force, larger surface roughness and higher wheel wear rate. (4) Softer wheel grade leads to lower grinding force and larger surface roughness. (5) Sharper cutting edges with lower cutting edge density are generated as compared with those in rotary dressing and conventional dressing.

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