Siemens SINUMERIK 840D sl Operating Manual page 429

Parameter Description
Position of the thread:
Internal thread
•
An internal thread is cut.
External thread
•
An external thread is cut.
NT Number of teeth per cutting edge
Single or multiple toothed milling inserts can be used. The motions required are
executed by the cycle internally, so that the tip of the bottom tooth on the milling tool
cutting edge corresponds to the programmed end position when the thread end
position is reached. Depending on the cutting edge geometry of the milling insert, the
retraction path must be taken into account at the base of the workpiece.
Machining position:
Single position
•
(only for G code)
Position pattern (MCALL)
•
The positions refer to the center point:
X0 Reference point X – (only for single position)
Y0 Reference point Y – (only for single position)
Z0 Reference point Z
(only for G code)
Z1 End point of the thread (abs) or thread length (inc)
Table Thread table selection:
Without
•
ISO metric
•
Whitworth BSW
•
Whitworth BSP
•
UNC
•
Selection - (not Selection, table value: e.g.
for table "without")
M3; M10; etc. (ISO metric)
•
W3/4"; etc. (Whitworth BSW)
•
G3/4"; etc. (Whitworth BSP)
•
N1" - 8 UNC; etc. (UNC)
•
P Display of the thread pitch for the parameter input in the input field "Table" and
"Selection".
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
Programming technology functions (cycles)
8.4 Milling
Unit
mm
mm
mm
mm
MODULUS
turns/"
mm/rev
in/rev
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