• Cutting speed is the peripheral speed of the cutting edge = π D N ; where D is the drill diameter and N is the rotational speed (rpm) The cutting speed selection depends on both the workpiece and cutter materials; N = V x 1000rpmπ D , where V is cutting speed and N is rotational speed (rpm) * Note that V is in m/min and D in mm • Feed (f) is the distance the drill penetrate per revolution (mm/rev), the share of each cutting edge is = f/2 • Depth of cut is taken as half the diameter for drilling = D/2
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 04/27/2011 for the course IME 431 taught by Professor David during the Spring '11 term at Founders College.