Low cutting force and tough cutting edge High rigidity web thickness Keeping A.R. max. at +17°, provides lower cutting force than the positive insert types of competitors Cutting force comparison (Internal evaluation) 2,000 21 % 1,500 Cutting force 1,000 Cutting Force in Radial Direction (N) 500 0 MEV Competitor A Competitor B (Vertical inserts) Cutting conditions : Vc = 200 m/min, ap × ae = 3 × 18 mm, fz = 0.10 mm/t, ø20 (3 inserts), Dry Workpiece : 42rMo4 60 mm Overhang Length LPR(mm) Low cutting force and large optimal web thickness provides excellent chattering resistance Chattering resistance comparison (Internal evaluation) Shouldering 80 Increased 60 Regidity Stable Machining 40 20 Chattering Occurred Chattering Occurred 0 MEV Competitor A Competitor B (Vertical inserts) Cutting conditions : Vc = 200 m/min, ap × ae = 3 × 18 mm, fz = 0.10 mm/t, ø20 (3 inserts), Dry Workpiece : 42CrMo4 Slotting MEV Good Competitor A Chattering Competitor B (Vertical triangle inserts) Chattering Cutting conditions : Vc = 220 m/min, ap = 3 mm (Slotting), fz = 0.10 mm/t, ø20 (3 inserts), dry, Workpiece : 42CrMo4 2 Provides excellent surface finish and superior cutting accuracy of the wall Surface finish comparison (Internal evaluation) Good Clouded Cutting direction Cutting direction MEV Competitor A Cutting conditions : Vc = 180 m/min, ap × ae=3 × 40mm, fz = 0.1 mm/t, ø50 (5 inserts), Dry Workpiece : C50 Machining Cutting accuracy of wall example image (Internal evaluation) Height of wall (mm) 43μm 13μm 12 10 MEV Competitor A 8 6 4 2 Machined 0 wall side -60 -40 -20 Reference point 0 20 40 60 Cutting accuracy of the wall (μm) Cutting conditions : Vc = 200 m/min, ap × ae=3 × 10mm (4 pass), fz = 0.15 mm/t, ø50 (5 inserts), Dry Workpiece : C50 *Accuracy of the wall surface varies depending on cutting conditions, machining environment, and insert combination.
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