Optimization of Drilling Parameters for PMMA Acrylic

Abstract

PMMA is a very useful material in a biological surgery and for bone replacement. Also, it is highly used in
research work, marine, aerospace, furniture because of its high mechanical properties and in corrosive properties. The RSM
L20 array method of DOE is used to optimizing the drilling parameters for PMMA 8mm sheet and 8mm drill bit diameter.
From this experiment it has been conclude that the 115 degree of point angle, 2000rpm spindle speed and 40 mm/rev feed is
optimum for thrust force. 90 degree of point angle, 2500 rpm spindle speed, and 35 mm/min feed is optimum for the torque.
140 degree point angle, 1500rpm spindle speed and 35 mm/min feed is optimum for circularity.