Sumitomo - Полный каталог инструмента - 2016 EN
для заказа - sumitomo@sumitomo-tools.ru
Brazed Carbide MULTI-DRILLs
KDS Type
Description
The new AK type drill features an extra long carbide drill head,
new cutting geometry, coolant holes and ultra hard TiAlN coating
for reliable high productivity drilling.
Advantages l General purpose drill for steels, stainless steels, cast irons
l High productivity drilling even on deep holes up to 7 x D
l Twice the tool life of conventionally coated drills
l Self centering
l Surface finish and tolerances comparable to solid carbide
l Regrindable extra long carbide head halves drill replacement
costs
Series Type Diameter Hole depth Remark
range (mm) (L/D)
Short type (MAK Type) 9,5~40,5 ~ 3 First choice general
purpose drill
Long type (LAK Type) 9,5~40,5
~5
Extra long type (DAK Type) 9,5~40,5 ~7 Helix angle:
25° ---> 0°
Series
Performance l High efficiency drilling l Optimized drill geometry l Comparison of cutting power
(chip removal capability)
Comparison of coating damage Comparison of damage to drill margin
when high speed drilling After 40 min. cut length KDS…AK
TiAlN coated TiN coated KDS…AK Competitor’s drill Cutting power (N)
KDS…AK type
Chip stuck in flute
vc = 120 m/min vc = 60 m/min Multi-Drills
After 30 m cut length (600 holes) Competitor’s drill
Drill dia.: 18,0 mm Drill dia.: 18,0 mm vc = 50 m/min Drill dia.: 18,0 mm vc = 50 m/min
Work material: C50 (HB230) f = 0,3 mm/rev
doc = 50 mm Work material: C50 (HB230) f = 0,25 mm/rev Work material: C50 (HB230) f = 0,3 mm/rev
doc = 38 mm doc = 90 mm (L/D=5)
Application l Workpiece material l Automotive parts l Automotive parts
examples - General steel and alloy steel Work material: C50 (HB250) Work material: 42CrMo4 (HB250)
- Low carbon steel
- Die steel KDS …AK KDS …AK
- Stainless steel
- Ductile cast iron Concurrent A Competitor B
- Grey cast iron
l l l l l l
0 100 200 300 0 100 200 300
Tool life (Holes) Tool life (Holes)
Drill: KDS 180 LAK (18,0mm) Drill: KDS 250 MAK (25,0mm)
Conditions: vc = 55 m/min, f = 0,25 mm/rev Conditions: vc = 60 m/min, f = 0,25 mm/rev
doc = 70 mm doc = 65 mm
www.sumitomo-tools.ru K35
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