Milling Korloy end mills H-Max Recommended Cutting Condition (HPBE) Workpiece NAK80, STD61 ( HrC 50) STD11, STS420 (HrC 50 60) SKH (HrC 60 65) R P M Feed A

Milling Korloy end mills H-Max Recommended Cutting Condition (HPBE) Workpiece NAK80, STD61 ( HrC 50) STD11, STS420 (HrC 50 60) SKH (HrC 60 65) R P M Feed A

Milling Korloy end mills H-Max Recommended Cutting Condition (HPBE) Workpiece NAK80, STD61 ( HrC 50) STD11, STS420 (HrC 50 60) SKH (HrC 60 65) R.P.M Feed Axial depth R.P.M Feed Axial depth R.P.M Feed Axial depth Diameter n(min-1) vf(mm/min) ap(mm) n(min-1) vf(mm/min) ap(mm) n(min-1) vf(mm/min) ap(mm) 1 40,000 4,800 0.06 40,000 3,360 0.05 40,000 3,160 0.04 2 40,000 5,760 0.11 40,000 4,800 0.10 24,000 2,280 0.07 3 40,000 7,200 0.13 32,000 4,620 0.12 16,000 1,020 0.09 4 32,000 6,528 0.15 24,000 1,920 0.13 12,000 1,440 0.10 6 21,000 5,040 0.20 10,000 2,000 0.20 8,000 1,020 0.11 8 16,000 3,840 0.30 12,000 2,160 0.20 6,000 840 0.11 10 13,000 3,120 0.50 10,000 1,920 0.20 4,800 660 0.12 12 9,000 2,160 0.50 7,000 1,320 0.30 3,600 516 0.12 16 6,000 1,440 0.50 5,000 960 0.30 2,500 390 0.15 Recommended Cutting Condition (HPRE) Workpiece Condition NAK80, STD61 ( HrC 50) STD11, STS420 (HrC 50 60) SKH (HrC 60 65) R.P.M Feed Axial depth R.P.M Feed Axial depth R.P.M Feed Axial depth Diameter(0) n(min-1) vf(mm/min) ap(mm) n(min-1) vf(mm/min) ap(mm) n(min-1) vf(mm/min) ap(mm) 1 40,000 720 0.10 40,000 480 0.03 32,000 300 0.02 2 40,000 1,200 0.10 24,000 600 0.05 16,000 380 0.05 3 32,000 2,280 0.20 16,000 1,140 0.10 11,000 720 0.05 4 24,000 2,640 0.30 12,000 1,320 0.10 8,000 480 0.05 6 16,000 3,480 0.40 8,000 1,740 0.20 5,300 1,080 0.10 8 12,000 3,480 0.50 6,000 1,740 0.20 4,000 1,080 0.10 10 9,600 3,480 0.60 4,800 1,740 0.30 3,200 1,080 0.20 12 8,000 2,880 0.80 4,000 1,440 0.30 2,700 900 0.20 16 6,000 2,160 1.00 3,000 1,080 0.50 2,000 680 0.30 20 4,800 1,740 1.00 2,400 840 0.50 1,600 528 0.30 Cutting speed formulas (Ball Endmills) Efficient cutting speed Veff = itx Deff x n/1000 (n=min_1) Efficient diameter Deff calculation formula Deff=(2 /ap(D-ap) x a ) D=0(Tool diameter), Deff=Efficient diameter Efficient cutting speed formulas When slope 0 is 0° Veff = itx Deff x n/1000 Deff = Efficient, diameter Calculate Deff as ap with various ball endmills 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' Cutting speed formulas (Ball Endmills, Slope angle = 0° ) Axial depth (ap) Ex) Diameter: 6mm, ap=0.3mm, Deff=2.6mm, N=14,000(min'1) Slope angle 0°: Veff = 113.7(m/min) Slope angle 15° Veff=113.7x1.5 = 170.6(m/min) Slope angle = 0° Endmills J. 9 Condition