Sandvik Coromant Silent tools - application guide - Manual (Page 32)

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2. Milling
The pocket measures 457 x 457 x 406 mm (18 x 18 x 16 inch).
The pocket has 25.4 mm (1.0 inch) radii in the corners, which
required a 50 mm (2.0 inch) cutter. The existing process was
unproductive and as deep pocket machining was getting more and
more common in the workshop, a productivity increase was the
main goal.
By implementing a dampened milling adaptor with an extension,
along with a CoroMill®210 and grade GC1040, the productivity
goals were met. Result: The reference solution took 15 hours,
while the Silent Tools solution took under seven hours.
Operation Deep pocket milling
Component Hollow chamber
Workpiece material CMC 01.2
Machine cost Euro 90
Machined volume 132 cm 3 /min (8.06 inch 3 /min)
ZEFF 4
Assembly length 360 mm (14.17 inch)
Cutting data Competitor Silent Tools
n (r/min) 1100 1550
v
c
(m/min (ft/min)) 176 (578) 249 (817.3)
f
z
(mm (inch)) 0.46 (0.018) 0.41 (0.016)
v
f
(mm/min (inch/min)) 2030 (80) 2540 (100)
AP (mm (inch)) 0.50 (0.02) 1.02 (0.04)
a
e
(mm (inch)) 51 (2.00) 51 (2.00)
Tot. cycle time 900 min 400 min
Tool life (no of comp.) 0.1 0.25