Manual

27
2. Milling
Applying Silent Tools to a shoulder milling operation in a valve
housing resulted in increased metal removal and improved surface
nish. Even with the increase in speed, depth of cut and spindle
speed, there were no vibration tendencies. The results are conclu-
sive: 149 % increase in productivity and return on investment after
nine weeks!
Operation Shoulder milling – circular interpolation
Workpiece material CMC 09.1, K3.2.C.UT, Nodular cast iron
Machine cost 195 EUR/hour
Machined volume 179 (10.92)/pc cm
3
(inch
3
)
ZEFF 5
Assembly length 280 mm (11.024 inch)
Reference Silent Tools
Adaptor C6-391.05 CD-22 200
Cutting head R390-066 Q22-18M
Cutting data
n (r/min) 700 1352
v
c
(m/min (ft/min))
176 (577) 280 (918)
f
z
(mm (inch))
0.31 (0.012) 0.27 (0.010)
v
f
(mm/min (inch/min))
687 (27.05) 1 156 (45.52)
v
fa
(mm/min (inch/min))
8.0 (0.315) 19.0 (0.748)
AP (mm (inch)) 4.0 (0.158) 6.0 (0.236)
a
e
(mm (inch))
18.59 (0.732) 18.59 (0.732)
Tot. cycle time 30.07 min 12.08 min
Tool life (no of comp.) 10 20
Application examples
Case one: Valve house