Общий каталог Dijet 2018 - страница 414

Tooling by DIJET Indexable Tools Mirror Radius RnMTyPE ■ CASE STUDIES 4. High speed and high accuracy machining Finishing for inner side wall Part name Injection mold for door inner panel Work Material S55C Hardness — Tool No. RNML-250150S-S25 Tool Grade RNM-250-R10, JC8015 Vc, (n) 5,000min-1, 393m/min Cutting conditions Vf, (fz) 2,500mm/min, 0.5mm/rev ap (mm) 0.5mm Achieved excellent surface accuracy with ae (mm) 0.1mm Result 1.7 times higher cutting speed. Deflection was below 0.005mm. RNM could finish Coolant Dry cut entire job by single process. Machine Double column MC 5. Replacement of solid carbide ball nose end mill with Mirror radius Bottom face Part name Clutch case finishing Work Material Aluminium alloy (ADC) Hardness — Tool No. RNMM-160100S-S16 Tool Grade RNM-160-R10, JC8015 Vc, (n) 5,000min-1, 251m/min Vf, (fz) 1,200mm/min Cutting conditions ap (mm) 0.7+0.5mm 2pass ae (mm) 10mm 2 times higher feed speed than exisiting Result solid carbide end mill. Observed smoother Coolant Wet cutting cutting and better surface roughness. Machine Vertical MC C202 : Standard stock items □ : Stock in Japan ○ : Soon to be deleted