Siemens SINUMERIK 828D - Page 371

Programming technology functions (cycles)
9.2 Rotate
Turning
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
371
Parameter "Longitudinal thread" in the "Input simple" mode
G code program parameters
ShopTurn program parameters
Input
• simple
T
Tool name
D
Cutting edge number
S / V
Spindle speed or constant cut-
ting rate
rpm
m/min
Parameter
Description
Unit
P
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
mm/rev
in/rev
turns/"
MODULUS
Machining
• ∇ (roughing)
• ∇∇∇ (finishing)
• ∇ + ∇∇∇ (roughing and finishing)
Infeed (only for ∇ and ∇
+ ∇∇∇)
• Linear:
Infeed with constant cutting depth
• Degressive:
Infeed with constant cutting cross-section
Thread
• Internal thread
• External thread
X0
Reference point X from thread table ∅ (abs)
mm
Z0
Reference point Z (abs)
mm
Z1 End point of the thread (abs) or thread length (inc)
Incremental dimensions: The sign is also evaluated.
mm
LW
or
LW2
or
LW2 = LR
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)
mm
mm
mm