Machinability Assessment of Soda Lime Glass in Ultrasonic-Assisted Drilling

Ultrasonic-assisted drilling (UAD) is a new process used for producing holes in the hard-to-cut and brittle materials at high accuracy and surface quality. In this paper, statistically designed experiments were conducted to study the machinability of soda glass in UAD. The machinability was measured in terms of the cutting power, surface roughness Ra and Rz and the linear tool wear. Machining conditions include UAD and conventional drilling (CD), abrasive tool concentration, feedrate, and spindle speed. Analysis of variance (ANOVA) defined the significant factors and their interactions, while statistical models were used to predict the process responses used for assessment of machinability indices.