Siemens SINUMERIK 840D sl Operating Manual page 526

Programming technology functions (cycles)
10.5 Contour milling
Parameter Description
UXY Finishing allowance, plane
Lift mode Lift mode before new infeed
If the machining operation requires several points of insertion, the retraction height can
be programmed:
● To retraction plane
● Z0 + safety clearance
When making the transition to the next insertion point, the tool returns to this height. If
there are no elements larger than Z0 in the pocket area, Z0 + safety clearance" can be
selected as the lift mode.
Predrilling procedure
G code program parameters
PRG Name of the program to be generated
PL Machining plane
Milling direction
● Climbing
● Conventional
RP Retraction plane
SC Safety clearance
F Feedrate
526
1. The part program or ShopTurn program to be processed has been cre‐
ated and you are in the editor.
2. Press the "Milling", "Contour milling", "Predrilling" and "Predrilling" soft‐
keys.
The "Predrilling" input window opens.
mm
mm
mm/min
ShopTurn program parameters
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant cutting
rate
Operating Manual, 05/2017, A5E40868721
Unit
mm
mm
mm
mm/min
mm/tooth
rpm
m/min
Turning