Siemens SINUMERIK 840D sl Operating Manual page 302

Programming technology functions (cycles)
8.1 Drilling
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
302
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
Parameters, ShopTurn program
T Tool name
D Cutting edge number
S / V Spindle speed or constant
cutting rate
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
rpm
m/min
Turning