Siemens SINUMERIK 840D sl Operating Manual page 309

Parameter Description
F2 Feedrate for thread milling
Table Thread table selection:
without

ISO metric

Whitworth BSW

Whitworth BSP

UNC

Selection - (not Selection, 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

only possible for
in turns per inch: Used with pipe threads, for example.

"Table
without selection")
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
Climbing: Mill thread in one cycle.

Conventional: 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 with
climb milling with milling feedrate FS.
FS Finishing feedrate rate - (only for climbing - conventional milling)
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Programming technology functions (cycles)
8.1 Drilling
Unit
mm/min
mm/tooth
MODULUS
Turns/"
mm/rev
in/rev
mm
mm
mm/min
mm/tooth
309