Общий каталог Dijet 2018 - страница 397

Tooling by DIJET Indexable Tools Mirror Ball BnMTyPE ■ CASE STUDIES “MIRROR S” 4. Super finishing by MIRROR S insert. Part name Bumper mold Work Material S55C Hardness — Tool No. BNML-200105S-S20C Tool Grade BNM-200-S, JC8008 Vc, (n ) 8,000min-1, 503m/min Cutting conditions Vf, (f) 4,000mm/min, 0.5mm/rev ap (mm) 0.05mm Achieved excellent surface roughness, ae (mm) 0.4mm Result observed VBmax= below 0.025mm even after 5.7 hours machining. Insert was still Coolant Mist coolant in good condition. Machine Vertical MC 5. Finishing on high hardened die steel Finishing on full hardened draw die Part name Stamping die Work size: 235×365 Work Material SKD11 Hardness 58~62HRC Tool No. BNML-160090S-S16C Tool Grade BNM-160-S, JC8008 Vc, (n ) 5,000min-1, 250m/min Vf, (fz) 2,300mm/min, 0.46mm/rev Cutting conditions ap (mm) 0.2mm ae (mm) 0.3mm No chatter and very smooth cutting. Result Mirror S could finish entire job for 5.5h. Coolant Dry cut Flatness was within 0.05mm. Machine Vertical MC C185