ATA International Product Catalogue

306276 1448 Recommended cutting data for solid carbide Karnasch parabola end mills These conditons are for general guidance; in actual maching conditions adjust the parameters according to your actual machine and work-piece conditions. If the rpm available is lower than recommended please reduce the feed rate to the same ratio. Use only accurate and highly rigid machines. Cutting conditions for arc radius r3 Material Group 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 Heat treated steels < 35 HRC (1200 N/mm²) 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 - 4.1 - 4.2 - 4.3 Heat treated steels – Stainless steels 35 - 45 HRC d4 r1 r3 a/2 rpm Vf mm/min fz mm ap mm ae mm rpm Vf mm/min fz mm ap mm ae mm 2.50 0.50 12.5 10.17° 24,000 2,880 0.03 0.22 0.05-0.1 19,000 2,280 0.030 0.22 0.05-0.1 5.00 0.50 350 12.60° 12,000 2,400 0.05 1.18 0.05-0.1 10,500 2,100 0.050 1.18 0.05-0.1 3.75 0.75 18.75 10.19° 16,000 2,560 0.04 0.27 0.05-0.1 14,000 2,520 0.045 0.27 0.05-0.1 5.00 1.00 25 10.18° 12,000 2,400 0.05 0.32 0.05-0.1 10,500 2,100 0.050 0.32 0.05-0.1 7.00 1.00 350 13.39° 8,000 1,920 0.06 1.18 0.05-0.1 7,000 1,680 0.060 1.18 0.05-0.1 7.50 1.50 37.5 10.18° 8,000 1,920 0.06 0.39 0.05-0.1 7,000 1,680 0.060 0.39 0.05-0.1 10.00 2.00 50 10.18° 6,000 1,680 0.07 0.45 0.05-0.1 5,000 1,400 0.070 0.45 0.05-0.1 9.00 2.00 350 12.16° 6,000 1,680 0.07 1.18 0.05-0.1 5,000 1,400 0.070 1.18 0.05-0.1 Cutting conditions for ball radius r1 Material Group 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 Heat treated steels < 35 HRC (1200 N/mm²) 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 - 4.1 - 4.2 - 4.3 Heat treated steels – Stainless steels 35 - 45 HRC d4 r1 r3 a/2 rpm Vf mm/min fz mm ap mm ae mm rpm Vf mm/min fz mm ap mm ae mm 2.50 0.50 12.5 10.17° 34,500 2,484 0.018 0.09 0.30 28,500 2,052 0.018 0.08 0.25 5.00 0.50 350 12.60° 34,500 2,484 0.018 0.09 0.30 28,500 2,052 0.018 0.08 0.25 3.75 0.75 18.75 10.19° 25,500 2,856 0.028 0.10 0.30 21,500 2,150 0.025 0.09 0.25 5.00 1.00 25 10.18° 22,000 3,080 0.035 0.19 0.55 18,500 2,590 0.035 0.15 0.45 7.00 1.00 350 13.39° 22,000 3,080 0.035 0.19 0.55 18,500 2,590 0.035 0.15 0.45 7.50 1.50 37.5 10.18° 20,500 3,280 0.040 0.28 0.85 17,000 2,584 0.038 0.24 0.70 10.00 2.00 50 10.18° 15,500 2,790 0.045 0.38 1.15 13,000 2,340 0.045 0.32 0.95 9.00 2.00 350 12.16° 15,500 2,790 0.045 0.38 1.15 13,000 2,340 0.045 0.32 0.95 Cutting conditions for ball radius r1 and arc radius r3 Material Group 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 Heat treated steels <35 HRC (1200 N/mm²) 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 - 4.1 - 4.2 - 4.3 Heat treated steels – Stainless steels 35 - 45 HRC d4 r1 r3 a/2 rpm Vf mm/min fz mm rpm Vf mm/min fz mm 2.50 0.50 12.5 10.17° 29,000 2,900 0.025 24,000 2,208 0.023 5.00 0.50 350 12.60° 17,000 2,720 0.040 14,500 2,320 0.040 3.75 0.75 18.75 10.19° 20,500 2,706 0.033 17,500 2,100 0.030 5.00 1.00 25 10.18° 17,000 2,720 0.040 14,500 2,320 0.040 7.00 1.00 350 13.39° 14,000 2,520 0.045 12,000 2,160 0.045 7.50 1.50 37.5 10.18° 14,000 2,520 0.045 12,000 2,160 0.045 10.00 2.00 50 10.18° 11,000 2,420 0.055 9,000 1,800 0.050 9.00 2.00 350 12.16° 11,000 2,420 0.055 9,000 1,800 0.050 For cutting depth and cutting width (ap+ae) refere to the above conditions for each section. Cutting depth ap based on the desired theoretical roughness depth R th Theoretical roughness depth R th (mm) Art. Parabolic radius 0.0001 mm 0.0003 mm 0.0005 mm 0.001 mm 0.003 mm 0.005 mm ap mm ap mm ap mm ap mm ap mm ap mm 30 6276 0250 0125 10 12.5 0.10 0.17 0.22 0.32 0.55 0.71 30 6276 0500 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 30 6276 0375 01875 15 18.75 0.12 0.21 0.27 0.39 0.67 0.87 30 6276 0500 025 20 25 0.14 0.24 0.32 0.45 0.77 1.00 30 6276 0700 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 30 6276 0750 0375 30 37.5 0.17 0.30 0.39 0.55 0.95 1.22 30 6276 1000 050 40 50 0.20 0.35 0.45 0.63 1.10 1.41 30 6276 0900 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 11 Index 10 9 OIL 8 7 6 5 4 3 2 1