Siemens sinumerik 840D sl Operating Manual page 263

Approach/retraction during chipbreaking
1. The tool drills at the programmed spindle speed S (dependent on %S) as far as the first
2. Spindle stop and dwell time DT.
3. The tool retracts by the retraction distance V2 for chipbreaking.
4. The tool then drills to the next infeed depth at spindle speed S (dependent on %S).
5. Steps 2 to 4 are repeated until the programmed final drilling depth Z1 is reached.
6. On expiry of dwell time DT, the tool is retracted with spindle speed SR to the safety
Procedure
Parameters, G code program
PL Machining plane
RP Retraction plane
SC Safety clearance
Parameters Description
with compensating chuck
Compensating 
chuck mode
without compensating chuck

(only for G
code)
Single position
Machining 
position (only
Drill hole at programmed position
for G code)
Position pattern

Position with MCALL
Turning
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
infeed depth (maximum infeed depth D).
clearance. The spindle stops and retracts to the retraction plane.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
1. The part program or ShopTurn program to be processed has been
created and you are in the editor.
2. Press the "Drilling" softkey.
3. Press the "Thread" and "Tapping" softkeys.
The "Tapping" input window opens.
mm
mm
Programming technology functions (cycles)
Parameters, ShopTurn program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
8.1 Drilling
mm/min
mm/rev
rpm
m/min
Unit
263