Drilling (mm)Cutting diameter variation Thrust force (N) MagicDrill DRV Applicable inserts High efficiency indexable insert drill Magic Drill DRV Economical inserts with 4 cutting edges. Excellent chip evacuation with 6D maximum deep-hole drilling. 1 Excellent drilling precision with less variation in cutting diameterUp to 6D drilling capabilities with a low cutting force design Optimal web thickness reduces chattering with a low cutting force design Comparison of cutting diameter variation Web thickness comparison (Internal evaluation) (Internal evaluation) Cutting force comparison (Internal evaluation) 3,000 0.25 DRV0.20Competitor B 2,500 39% 2,4462,000 0.15 1,500 K 33% 0.10 1,4741,000 DRV Competitor A 0.05 500 0 0 50 100 DRV Competitor C Drilling depth (mm) Cutting conditions: Vc = 150 m/min, f = 0.06 mm/rev Cutting conditions: Vc = 200 m/min, f = 0.12 mm/rev Drill dia. ø20(5D), wet Workpiece material: S50C Drill dia. ø20(3D), wet Workpiece material: S50C 2 Unique insert design to control chip flow Outer edge Smooth chip evacuation with compact chips Unique insert pattern to differentiatebetween outside and inside insertsChipshape comparison of outer insert cutting edge (Internal evaluation) 16% 47% Diameter of chips Weight of chips U-shaped cutting edge DRV: 10mm Competitor D: 12mm Cutting conditions: Vc = 150 m/min, f = 0.06 mm/rev, Drill dia. ø20(3D), wet workpiece material: S50C Inner edge Excellent chip evacuation with 6D maximum deep-hole drilling Weight per unit of length for chips generatedby the inner edge Pitch comparison of chips generated (Internal evaluation) by the inner edge (Internal evaluation) DRV 80mg/mm 16% 47% Competitor E Spoon-shaped cutting edge 151mg/mm DRV: 1.2DmimameterCoofmcphetiitporsE: Weight of chips 0.5mm Cutting conditions: Vc = 250 m/min, f = 0.08 mm/rev, Drill dia. ø20(5D), wet workpiece material: SUS304 K44