Machining time and costs - SlideShare
40 MACHINE WORKPIECE MATERIAL TOOL MATERIAL OPERATION Vc (m/min) fn (mm/rev) Ap (mm) TURNING MACHINE STEEL HIGH SPEED STEEL (HSS) Turning and facing D 30 – 40 A 40 - 50 D 0.1– 0.25 A 0.02/ 0.1 D 0.75-2 A 0.2-0.8 Parting and grooving 10 – 15 0.02 – 0.1 Threading 10 Thread pitch According to formula Drilling 18 Manual Knurling 10 Boring D ...