738 Каталог KORLOY 2016 Металлорежущий инструмент и станочная оснастка ENG Стр.F15

Каталог KORLOY 2016 Инструмент и оснастка Стр. F15 0738 ENG Lab2u

Technical Information for H Endmill Recommended cutting conditions (PBE2000 Ball) Workpiece Pre hardened steel (HrC35 45) Hardened steel (HrC45 55) High hardened Steel (HrC55 HrC70) Conditions R.P.M Feed R.P.M Feed R.P.M Feed Diameter(0) n(min'1) vf(mm/min) n(min'1) vf(mm/min) n(min'1) vf(mm/min) O.5 35,OOO 1,47O 31,5OO 1,33O 28,OOO 1,O5O 1 35,OOO 2,940 31,5OO 2,660 28,OOO 2,OOO 1.2 33,6OO 3,O1O 3O,1OO 2,695 26,6OO 2,1OO 1.5 33,6OO 3,150 3O,1OO 2,8OO 25,900 2,150 2 33,460 3,360 28,OOO 2,8OO 24,500 2,2OO 2.5 25,900 3,710 22,400 2,8OO 17,5OO 2,2OO 3 22,260 3,710 18,550 2,8OO 16,5OO 2,2OO 4 16,730 3,710 14,OOO 2,8OO 13,OOO 2,2OO 5 17,8OO 4,900 15,OOO 3,750 12,5OO 2,1OO 6 13,400 4,1OO 11,OOO 3,1OO 1O,OOO 2,5OO 8 1O,7OO 3,5OO 9,OOO 2,7OO 8,OOO 2,150 10 8,9OO 3,1OO 7,5OO 2,4OO 6,6OO 1,9OO 12 6,680 2,5OO 5,6OO 1,9OO 5,OOO 1,550 Application tip ap = 0.02D pf = 0.05D Workpiece should be clamped rigidly. In case of vibration, reduce RPM and feed rate by the same ratio Cutting condition by overhang Cutting conditions of the shank taper type in case of being clamped at neck. When the overhang is increased by 1D, decrease R.P.M and feed 10%. In case of the straight type adjust conditions according to the overhang. Ex) When the overhang is 3D and is increased by 1D, decrease R.P.M and feed 10%. Notice Cutting conditions are up to the machine’s condition and the shape of cutting. Use cutting fluid that is proper to the workpiece and produces few temperature reaction. 0D Cutting speed formulas (Ball Endmills) Efficient cutting speed Veff = (% x Deff x n)/1000 (n = min-1) Efficient diameter Deff calculation formula Deff = (21/ap(D-ap) x a) D=0(Tool diameter), Deff=Efficient diameter Efficient cutting speed formulas When slope 0 is 0° Veff = (% x Deff x n)/1OOO Deff = Efficient, diameter Calculate Deff as ap with various ball endmills Cutting speed formulas (Ball Endmills, Slope angle = 0° ) Axial depth (ap) a a= 1 Slope angle e = 0° a=1.2 Slope angle e = 7° a= 1.5 Slope angle e = 15' a=1.7 Slope angle e = 30' a=2.17 Slope angle e = 45' a=2.3 Slope angle e = 60' Ex) Diameter: 6mm, ap=0.3mm, Deff=2.6mm, N=14,000(min'') Slope angle 0°: Veff = 113.7(m/min) Slope angle 15° Veff=113.7x1.5 = 170.6(m/min) Slope angle = 0° Endmills J. 15