Siemens SINUMERIK 840D sl Operating Manual page 294

Programming technological functions (cycles)
8.1 Drilling
Parameter Description
Table Thread table selection:
without
•
ISO metric
•
Whitworth BSW
•
Whitworth BSP
•
UNC
•
Selection - (not Selection of table value: e.g.
for table
M3; M10; etc. (ISO metric)
•
"Without")
W3/4"; etc. (Whitworth BSW)
•
G3/4"; etc. (Whitworth BSP)
•
N1" - 8 UNC; etc. (UNC)
•
P Pitch ...
- (selection
in MODULUS: MODULUS = Pitch/π
•
option only for
• in turns per inch: Used with pipe threads, for example.
table selection
"without")
When entered per inch, enter the integer number in front of the decimal point in the
first parameter field and the figures after the decimal point as a fraction in the
second and third field.
in mm/rev
•
in inch/rev
•
The pitch is determined by the tool used.
Z2 Retraction amount before thread milling
The thread depth in the direction of the tool axis is defined using Z2. Z2 is relative to
the tool tip.
∅ Nominal diameter
Milling direction
Climb milling: Mill thread in one cycle.
•
Conventional milling: Mill thread in one cycle.
•
Climbing - conventional: Mill thread in two cycles: rough cutting is performed by
•
conventional milling with defined allowances, then finish cutting is performed by
climb milling with milling feedrate FS.
FS Finishing feedrate - (only for climbing - conventional milling)
294
Operating Manual, 09/2011, 6FC5398-7CP40-2BA0
Unit
MODULUS
Turns/"
mm/rev
in/rev
mm
mm
mm/min
mm/tooth
Milling