Tooling by DIJET QM MILL MPMTYPE ■ RECOMMENDED CUTTING CONDITIONS / SIDE FACE FINISHING ● MPM type (YOHW type insert) + MSN Carbide Shank Holder Tool dia. (mm) 25 30 32 Material Grades No. of teeth 6N No. of teeth 7N No. of teeth 8N to be cut ℓ ap ae n Vf ℓ ap ae n Vf ℓ ap ae n Vf (mm) (mm) (mm) (min-1) (mm/min) (mm) (mm) (mm) (min-1) (mm/min) (mm) (mm) (mm) (min-1) (mm/min) ~120 ≦1.2 ≦0.10 5,090 4,580 ~160 ≦1.2 ≦0.10 4,200 4,410 ~160 ≦1.2 ≦0.10 3,980 4,770 Carbon steel JC8015 (C50, C55) (DH102) 190 ≦0.8 ≦0.08 3,560 2,560 240 ≦0.8 ≦0.08 2,940 2,470 240 ≦0.8 ≦0.08 2,780 2,670 Below 250HB 235 ≦0.6 ≦0.08 3,560 2,140 290 ≦0.6 ≦0.08 2,940 2,060 290 ≦0.6 ≦0.08 2,780 2,230 ~120 ≦1.0 ≦0.10 4,580 4,120 ~160 ≦1.0 ≦0.10 3,800 3,990 ~160 ≦1.0 ≦0.10 3,580 4,300 Die steel JC8015 (1.2344, 1.2379) (DH102) 190 ≦0.7 ≦0.08 3,200 2,300 240 ≦0.7 ≦0.08 2,660 2,230 240 ≦0.7 ≦0.08 2,500 2,400 Below 255HB 235 ≦0.5 ≦0.08 3,200 1,920 290 ≦0.5 ≦0.08 2,660 1,860 290 ≦0.5 ≦0.08 2,500 2,000 ~120 ≦1.0 ≦0.10 4,580 4,120 ~160 ≦1.0 ≦0.10 3,800 3,990 ~160 ≦1.0 ≦0.10 3,580 4,300 Mold steel JC8015 (1.2311, P20) (DH102) 190 ≦0.7 ≦0.08 3,200 2,300 240 ≦0.7 ≦0.08 2,660 2,320 240 ≦0.7 ≦0.08 2,500 2,400 30-36HRC 235 ≦0.5 ≦0.08 3,200 1,920 290 ≦0.5 ≦0.08 2,660 1,860 290 ≦0.5 ≦0.08 2,500 2,000 ~120 ≦1.0 ≦0.10 3,560 2,560 ~160 ≦1.0 ≦0.10 2,960 2,490 ~160 ≦1.0 ≦0.10 2,780 2,670 Mold steel DH102 (1.2311, P21) (JC8015) 190 ≦0.7 ≦0.08 2,490 1,490 240 ≦0.7 ≦0.08 2,060 1,440 240 ≦0.7 ≦0.08 1,950 1,560 38-43HRC 235 ≦0.5 ≦0.08 2,490 1,200 290 ≦0.5 ≦0.08 2,060 1,150 290 ≦0.5 ≦0.08 1,950 1,250 ~120 ≦0.8 ≦0.10 2,550 1,530 ~160 ≦0.8 ≦0.10 2,120 1,480 ~160 ≦0.8 ≦0.10 1,990 1,590 Hardened die steel DH102 (1.2344, 1.2379) (JC8015) 190 ≦0.5 ≦0.08 1,780 850 240 ≦0.5 ≦0.08 1,480 830 240 ≦0.5 ≦0.08 1,390 890 42-52HRC 235 – – – – 290 – – – – 290 – – – – ~120 ≦0.5 ≦0.10 1,910 1,150 ~160 ≦0.5 ≦0.10 1,580 1,110 ~160 ≦0.5 ≦0.10 1,490 1,190 Hardened die steel (1.2344, 1.2379) DH102 190 ≦0.3 ≦0.08 1,340 640 240 ≦0.3 ≦0.08 1,100 620 240 ≦0.3 ≦0.08 1,040 670 55-62HRC 235 – – – – 290 – – – – 290 – – – – ~120 ≦1.2 ≦0.12 5,090 4,580 ~160 ≦1.2 ≦0.12 4,200 4,410 ~160 ≦1.2 ≦0.12 3,980 4,770 Grey & Nodular cast iron JC8015 (GG, GGG) (DH102) 190 ≦0.8 ≦0.10 3,560 2,560 240 ≦0.8 ≦0.10 2,940 2,470 240 ≦0.8 ≦0.10 2,780 2,670 Below 300HB 235 ≦0.6 ≦0.08 3,560 2,140 290 ≦0.6 ≦0.08 2,940 2,060 290 ≦0.6 ≦0.08 2,780 2,230 ~120 ≦1.0 ≦0.10 4,580 4,120 ~160 ≦1.0 ≦0.10 3,800 3,990 ~160 ≦1.0 ≦0.10 3,580 4,300 Stainless steel JC8015 Below 250HB (DH102) 190 ≦0.7 ≦0.08 3,200 2,300 240 ≦0.7 ≦0.08 2,660 2,230 240 ≦0.7 ≦0.08 2,500 2,400 235 ≦0.5 ≦0.08 3,200 1,920 290 ≦0.5 ≦0.08 2,660 1,860 290 ≦0.5 ≦0.08 2,500 2,000 ~120 ≦1.0 ≦0.10 1,020 730 ~160 ≦1.0 ≦0.10 840 710 ~160 ≦1.0 ≦0.10 800 760 Titanium alloy JC8015 (Ti-6Al-4V) (DH102) 190 ≦0.7 ≦0.08 710 430 240 ≦0.7 ≦0.08 580 410 240 ≦0.7 ≦0.08 560 450 235 ≦0.5 ≦0.08 710 340 290 ≦0.5 ≦0.08 580 320 290 ≦0.5 ≦0.08 560 360 ℓ: Overhung length, ap : Axial depth of cut, ae : Radial depth of cut, n : Spindle speed, Vf : Feed speed ■ NOTE 1) The cutting parameters to be adjusted according to the machine rigidity or work rigidity. 2) In case chatter occurrs, recommend to reduce depth of cut or feed speed. 3) If machine does not have enough power, recommend to reduce depth of cut first and reduce spindle speed and feed speed. 4) Use air blow to flush the chips out. B103