Основной каталог Kyocera 2021 - 2022 - страница 677

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MagicDrill DRA Applicable inserts For counterboring FTP • Pilot point geometry and double margin improves hole accuracy • High efficient machining available by solving problems at counterboring 1 Pilot point geometry and doublemargin improved hole accuracy 2 Reduce burr by large helix angleand corner chamfer Improved centripetal force with pilot point geometry. Corner chamfer offers enhanced chipping and burr Double margin reduced hole bending and waviness. resistance. Pilot point geometry Double margin Corner shape Corner 30° Margin chamfer K Comparison of hole precision (Internal evaluation) Burr height comparison Helix angle 30° (Internal evaluation) 14.50 0.4 14.25 0.3 14.00 0.2 13.75 0.1 Improved edge 13.50 0 sharpness with large DRA (FTP) Competitor N DRA (FTP) Competitor O helix angle Pilot point geometry Flat shape Pilot point geometry Flat shape Cutting conditions: Vc = 80 m/min, f = 0.25 mm/rev, drilling diameter ø14, L/D = 3 Cutting conditions: Vc = 80 m/min, f = 0.25 mm/rev, drilling diameter ø14, L/D = 3 Drilling depth 20 mm, wet, workpiece: C45 Drilling depth 20 mm, wet, workpiece: C45 3 Excellent chip evacuation with large thinning angle and groove shape Excellent chip evacuation for minimized chip clogging. Large thinning angle Chip comparison (Internal evaluation) Cutting conditions: Vc = 55 m/min, f = 0.1 mm/rev, drilling diameter ø14, L/D = 3 Drilling depth 20 mm, wet, workpiece: X5CrNi1810 (First chip) DRA (FTP) Competitor P Pilot point geometry Pilot point geometry K7 Drilling diameter (mm) Burr height (mm) Drilling