Experimental Study on Ultrasonic Assisted Grinding of Silicon Carbide Microstructure
To improve the machining quality of silicon carbide ceramic microstructure,both conventional grinding and ultrason-ic assisted grinding were conducted to investigate the influence of processing parameters on the surface quality.The results demon-strate that the grinding force,surface roughness and edge arc radius decrease with the increase of spindle speed and increase with that of the federate.The influence of feed speed on grinding force is much greater than that of spindle speed,while the influence de-gree of these two parameters on surface roughness and edge arc radius is similar.The application of ultrasonic vibration can effec-tively reduce grinding force,surface roughness and edge arc radius by(9.4～34.6)%、(12.9～28.9)%、(4.8～16.3)%,respective-ly.Furthermore,the micro morphology of the machined surface shows that the plastic removal behavior and brittle removal behav-ior coexist during the grinding process.Ultrasonic assisted grinding is easier to achieve material plastic removal and can gain bet-ter machining quality compared to conventional grinding.
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