Study on the dressing of grinding wheel - Effects of dresser type on the wheel surface topography.

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  • 研削と石のドレッシングに関する研究　　と石作業面性状に及ぼすドレッサ形状の影響
  • ケンサク トイシ ノ ドレッシング ニ カンスル ケンキュウ トイシ サギョウ
  • Effects of Dresser Type on the Wheel Surface Topography
  • 砥石作業面性状に及ぼすドレッサ形状の影響

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Abstract

Single point diamond dressers (sharp-edged type and worn-edged type) and impregnated dressers (fine grain diamond type with hard bond and diamond powder type with soft bond) are taken up, and the following two effects are discussed : macro effect (transferability of dresser profile on the wheel surface) and micro effect (sharpness and distribution density of grain cutting edges). The macro effect is investigated by means of dressing simulation and power spectrum analysis, and the micro effect is investigated by means of scratch method. In addition, grinding forces are measured of cylindrical plunge grinding. The results are summarized as follows : (a) The transferability can be evaluated by the power ratio and higher power ratio means better transferability. Impregnated dresser, which is superior in the transferability to single point diamond dresser, shows worse sharpness of grain cutting edge and brings higher grinding force. (b) When using single point diamond dresser, index number n of grain cutting edge distribution pattern changes from n=2 (parabolic) toward n= 1 (triangular) because of the micro effect with an increase in the dresser feed rate. When the macro effect appears on it, the index number n increases and the density decreases.

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