Minimization of Burr Formation in Milling of Nickel Chrome Alloy Steels: Through Appropriate Selection of In-Plane Exit Angle

Burrs are formed in milling at the exit of the workpiece and it is three dimensional in nature. The exit burr height and thickness are varied with in-plane exit angle. It is also the prime factor of burr formation mechanism. This work presents a condition to obtain minimum burr formation at different exit edge bevel angles of the workpiece made of nickel chrome alloy steel with the varied in-plane exit angle of the cutter. In this experiment under dry environment, negligible burr is observed at 15° exit edge bevel angle when in-plane exit angle is 60°.