Siemens SINUMERIK 840D sl Operating Manual page 365

Parameter "Longitudinal thread" in the "Input simple" mode
G code program parameters
Input
Parameter
P
Machining
Infeed (only for ∇ and ∇
+ ∇∇∇)
Thread
X0
Z0
Z1
LW
or
LW2
or
LW2 = LR
LR
H1
Turning
Operating Manual, 05/2017, A5E40868721
● simple
Description
Select the thread pitch / turns for table "Without" or specify the thread pitch/turns
corresponding to the selection in the thread table:
● Thread pitch in mm/revolution
● Thread pitch in inch/revolution
● Thread turns per inch
● Thread pitch in MODULUS
● ∇ (roughing)
● ∇∇∇ (finishing)
● ∇ + ∇∇∇ (roughing and finishing)
● Linear:
Infeed with constant cutting depth
● Degressive:
Infeed with constant cutting cross-section
● Internal thread
● External thread
Reference point X from thread table ∅ (abs)
Reference point Z (abs)
End point of the thread (abs) or thread length (inc)
Incremental dimensions: The sign is also evaluated.
Thread advance (inc)
The starting point for the thread is the reference point (X0, Z0) brought forward by
the thread advance W. The thread advance can be used if you wish to begin the
individual cuts slightly earlier in order to also produce a precise start of thread.
Thread run-in (inc)
The thread run-in can be used if you cannot approach the thread from the side and
instead have to insert the tool into the material (e.g. lubrication groove on a shaft).
Thread run-in = thread run-out (inc)
Thread run-out (inc)
The thread run-out can be used if you wish to retract the tool obliquely at the end of
the thread (e.g. lubrication groove on a shaft).
Thread depth from thread table (inc)
Programming technology functions (cycles)
ShopTurn program parameters
T Tool name
D Cutting edge number
S / V Spindle speed or constant cutting
rate
10.2 Rotate
rpm
m/min
Unit
mm/rev
in/rev
turns/"
MODULUS
mm
mm
mm
mm
mm
mm
mm
mm
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