Manual

49
3. Turning
Case one: Turning mud screws
An oil & gas company machining mud screws invited Sandvik
Coromant to the workshop to test Silent Tools as the existing
solution was not stable enough. By utilizing the stability of the
Silent Tools bar and the possibilities of using higher cutting data,
the machining time was reduced by nine minutes per component.
Operation Turning
Component Mud screws
Workpiece material
CMC 20.32 (Stellite Grade 6)
Machine cost
Euro 94
Reference Silent Tools
Adaptor A24T-DTFNR3 A570-4C D28-15 40
Insert TNMG 332-MS VP-05RT SNMG 432-SM
Grade VP05RT GC 1105
Cutting data
n, r/min:
171.98 275.17
D
m
mm (inch):
56 (2.20) 56 (2.20)
v
c
m/min (ft/min)
30 (100) 49 (160)
f
n
mm/r (inch/r)
0.08 (0.003) 0.10 (0.004)
AP mm (inch)
2.5 (0.10) 2.5 (0.10)
Tool life (no of comp.) 1 2
Tot. cycle time, min 21.51 10.08 min
Productivity increase 113%