887 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.F11

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. F11 0887 Lab2u

Technical Information for H Endmill O Recommended cutting conditions (PBE2000 Ball) Workpiece Conditions Diameter(0) Above HrC40 (HPM1, KP4M, etc.) Under HrC55 (NAK55, NAK80, STAVAX, etc.) HrC55 HrC70 (STD11, STD61, etc.) R.P.M n (min-1) Feed vf (mm/min) R.P.M n (min-1) Feed vf (mm/min) R.P.M n (min-1) Feed vf (mm/min) 0.5 35,000 1,470 31,500 1,330 28,000 1,050 1 35,000 2,940 31,500 2,660 28,000 2,000 1.2 33,600 3,010 30,100 2,695 26,600 2,100 1.5 33,600 3,150 30,100 2,800 25,900 2,150 2 33,460 3,360 28,000 2,800 24,500 2,200 2.5 25,900 3,710 22,400 2,800 17,500 2,200 3 22,260 3,710 18,550 2,800 16,500 2,200 4 16,730 3,710 14,000 2,800 13,000 2,200 5 17,800 4,900 15,000 3,750 12,500 2,100 6 13,400 4,100 11,000 3,100 10,000 2,500 8 10,700 3,500 9,000 2,700 8,000 2,150 10 8,900 3,100 7,500 2,400 6,600 1,900 12 6,680 2,500 5,600 1,900 5,000 1,550 Application tip ap = 0.02D pf = 0.05D Workpiece should be clamped rigidly. In case of vibration, reduce R.PM and feed rate by the same ratio O Cutting condition by overhang For shank taper type, Cutting conditions are based on the case of being clamped at neck part - When the overhang is increased by 1D in comparion to the overhang, decrease R.P.M and feed by 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 by 10% O Cutting speed formulas (Ball endmills) Efficient cutting speed Veff = (n x Deff x n)/1000 (n = min-1) 0D Efficient diameter Deff calculation formula Deff = (2 yap(D-ap) x a) D = 0 (Tool diameter), Deff = Efficient diameter ' Efficient cutting speed formulas: When slope 0 is 0° Veff = (n x Deff x n)/1000 Deff = Efficient, diameter Calculate Deff as ap with various ball endmills a: a = 1 a = 1.2 a = 1.5 a = 1.7 a = 2.17 a = 2.3 Slope angle e = 0° Slope angle e = 7° Slope angle e = 15° Slope angle e = 30° Slope angle e = 45° Slope angle e = 60° O Cutting speed formulas (Ball endmills, slope angle = 0° ) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 6.0 Deff Ex) Diameter: 6 mm, ap = 0.3 mm, Deff = 2.6 mm, N = 14,000 (min-1) Slope angle 0°: Veff = 113.7 (m/min) Slope angle 15°: Veff = 113.7 x 1.5 = 170.6 (m/min) Slope angle = 0° O 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 reactions Endmills J. 11