抄録
This paper describes an experimental investigation of the grinding mechanism in a highwork-feed-rate electrolytic grinding method. An idealized tool consists of a single diamond tool and a copper electrode in substitution for the conductive grinding wheel. The influence of electrolytic action on single diamond cutting force components in SS 41 and Al-Cu-Si alloy are investigated and discussed using the cutting force equations reported in the previous paper. Summary of the results are shown below. (1) Cutting force components consist of both chip formation and ploughing force in the case of single diamond cutting. (2) Cutting force compo-nents in SS 41 decrease in proportion to the increase in the applied electrolytic amount. This may be caused by the reduction of chip formation force due to the decrease in actual cutting depth of cut. Ploughing force and specific grinding force are held constant even by the applied electrolytic action. (3) Cutting force components in Al-Cu-Si alloy also decrease with increase of the applied electrolytic amount. As the applied electrolytic action in this alloy induces the preferential dissolution of hardened precipitation particles, the specific grinding force decreases remarkably, thereby causing a decrease in the chip formation force. Material softening by the preferential dissolution increases the ploughing force. (4) The propriety of the proposed cutting model is ascertained by the experimental study of cutting time in an electrolytic single diamond cutting.
