Abstract
Based on the chip geometry, a new mathematical model is established to correlate specific grinding energy with the maximum undeformed chip thickness, the cutting length, and grinding parameters. This work investigates the energy of cemented carbide (YG8) grinding with a vitrified diamond wheel in high speed regime (the grinding speed of up to 120 m/s). The results indicate that the specific grinding energy increases with the rise of the cutting length, while decreases with the increase in the maximum undeformed chip thickness. The distribution mechanism of the grinding energy shows that the grinding energy is mainly expended for sliding and ductile plowing. A nearly proportional relationship is obtained between the consumed power per unit width and the plowed surface areas generated by all cutting points per unit width. Compared to conventional grinding, it is found that specific grinding energy requirement is increased for high speed grinding of cemented carbide.
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