Siemens SINUMERIK 840D sl Operating Manual page 342

Programming technological functions (cycles)
10.1 Drilling
Parameter Description
FD - (only for Feedrate for through drilling (abs) or
through drilling
Feedrate for through drilling referred to drilling feed rate F
"yes")
Coolant off - M function to switch off the coolant
(only G code)
Hidden parameters
The following parameters are hidden. They are pre-assigned fixed values or values that can
be adjusted using setting data.
Parameter Description
PL (only for G code) Machining plane
SC (only for G Safety clearance
code)
Drilling depth Drilling depth referred to the shaft or tip
Entrance to the hole Technology at the entrance to the hole
ZA Predrilling depth (inc)
FA Predrilling feed
Drilling
● 1 cut
interruption
● Chipbreaking
● Swarf removal
● Chipbreaking and swarf removal
D 1. Drilling depth referred to Z0 (inc.)
FD1 Percentage for the feedrate for the first infeed
DF Percentage for the feedrate for each additional infeed
Infeed increment is continually reduced in the direction of final
drilling depth
V1 Minimum infeed
V1 < Infeed increment: The tool is inserted by the infeed in‐
crement
V1 > Infeed increment: The tool is inserted by the infeed value
programmed under V1.
V2 Retraction distance after each machining step
Clearance distance The clearance distance is calculated by the cycle.
DTB Dwell time at each drilling depth
N - (only for "chip‐ Number of chipbreaking strokes before each swarf removal
breaking and swarf operation
removal")
Retraction for swarf Swarf removal at the pilot hole depth or safety clearance
removal
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Unit
mm/min
%
Value Can be set in SD
Defined in MD
52005
1 mm
Tip
With pilot hole
1mm
50 %
10 mm
90 %
2 mm
1 mm
Automatic
0.6 s
1
Safety clear‐
ance
Operating Manual, 05/2017, A5E40868956
x
Milling