Challenge
Material:
Aluminium with 12% silicon
Part:
Ladder frame
Drill hole:
Ø 4,0, 40×D long, entrance and exit under an angle
Machine:
Vertical machining centre
Coolant:
Minimum Quantity Lubrication (MQL) 10 bar (145PSI)
Situation:
No safe process with competitor's tool, tool life 2.500-6.000 drill holes
KOMET-Solution
KOMET KUB® Drillmax 4,0 40×D MQL Special Pilot hole 18 mm deep Cutting data:
vc = 100 m/min
SFM = 7.950 r.p.m.
f = 0,23 mm (.0090")/rev.
Entering pilot hole (Z-14 mm = .55“)
with 100 r.p.m and 3.000 mm (118“)/min
Start drilling down to Z-25 mm = .98“ with
vc = 50 m/min (164 SFM) and
f = 0,23 mm (.0090“)/rev.
Deep hole drilling with vc 100 m/min
(328SFM) at f = 0,23 mm (0.0090“)/rev.
to final depth Z-87mm = 3.42“
Withdraw drill out of the finished hole
with 100 r.p.m. and F = 5.000 mm (197“)/min
Customer's Benefit