Каталог Iscar вращающийся инструмент 2017 - страница 823

Cutting Depth Ø Ø Cutting Conditions for BHR Rough Boring Heads A A A1 A IHSR IHSR IHSR IHCR IHSR Twin boring cutters Twin boring cutters with the same cutting diameter with different cutting diameters and heights (Z=1) ITS BORE B Working Range ap Steel ap Cast Iron , Aluminum d 18-28 ap - 1.5-2 ap - 2-2.5 28-50 ap - 2-3 ap - 2.5-3.5 ap 50-68 ap - 3-4 ap - 3.5-5 B 68-200 ap - 4-5 ap - 5-7 It’s advisable to start with B hole ≥ boring bar diameter d 200-500 ap - 5-6 ap - 6-8 Cutting Conditions for BHF Fine Boring Heads Feed f=mm/rev Cutting Material L/D Stability Speed Insert Radius Insert Grade Vc=m/min R=0.2 R=0.4 L/D=2.5 ● ● ● 200-300 0.05-0.08 0.08-0.10 IC20N Carbon Steel L/D=4 ● ● 160-250 0.05-0.08 0.08-0.10 IC30N HB ≤ 200 ● L/D=6.3 70-100 0.05-0.08 - IC54 L/D=2.5 ● ● ● 160-250 0.05-0.08 0.08-0.10 Carbon Steel IC20N L/D=4 ● ● 150-200 0.05-0.08 0.08-0.10 HB > 200 ● IC30N L/D=6.3 70-100 0.05-0.08 - L/D ● ● ● 150-200 0.05-0.08 0.08-0.10 IC20N/30N ap Stainless Steel L/D ● ● 120-160 0.05-0.08 0.08-0.10 IC54 ● 0.1-0.25 L/D 70-80 0.05-0.08 0.08-0.10 IC908 Stability L/D=2.5 ● ● ● 120-160 0.05-0.08 0.08-0.10 Alloyed Steel (1) ● ● ● L/D=4 ● ● 100-140 0.05-0.08 0.08-0.10 IC54 – Good HB 480-550 ● L/D=6.3 70-100 0.05-0.08 - ● ● – Normal ● – Poor L/D=2.5 ● ● ● 120-160 0.05-0.08 0.08-0.10 Cast Iron L/D=4 ● ● 100-140 0.05-0.08 0.08-0.10 IC20 ● L/D=6.3 70-100 0.05-0.08 - L/D=2.5 ● ● ● 300-400 0.05-0.08 0.08-0.10 Aluminum L/D=4 ● ● 250-350 0.05-0.08 0.08-0.10 IC20 ● L/D=6.3 100-150 0.05-0.08 - (1) ap=0.1 min L 0 .0005 .0015 .001 D In case of a single or a stepped boring cutter configuration, only half the feed should be applied. 819