Siemens SINUMERIK 840D sl Operating Manual page 320

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.
•
Up-cut operation milling: Mill thread in one cycle.
•
Synchronous operation - Up-cut operation: Mill thread in two cycles: rough cutting is
•
performed by Up-cut operation milling with defined allowances, then finish cutting is
performed by climb milling with milling feedrate FS.
FS Finishing feedrate - (only for Synchronous operation - Up-cut operation milling)
320
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Unit
MODULUS
Turns/"
mm/rev
in/rev
mm
mm
mm/min
mm/tooth
Milling