Основной каталог Kyocera 2021 - 2022 - страница 677

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For counterboringFTP

  • Pilot point geometry and double margin improves hole accuracy
  • High efficient machining available by solving problems at counterboring
1Pilot point geometry and double 2Reduce burr by large helix angle
margin improved hole accuracyand 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 geometryDouble marginCorner shape

Corner 30° Margin chamfer

KK

Comparison of hole precision (Internal evaluation)Burr height comparisonHelix angle 30°
(Internal evaluation)
14.500.4
14.250.3
14.000.2
13.750.1
Improved edge
sharpness with large
13.500
DRA (FTP)Competitor NDRA (FTP)Competitor Ohelix angle
Pilot point geometryFlat shapePilot point geometryFlat 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