Siemens SINUMERIK 840D sl Operating Manual page 304

Programming technology functions (cycles)
8.1 Drilling
Parameter Description
Thread Direction of rotation of the thread
(only for G code)
Righthand thread

Lefthand thread

(only in mode "without compensating chuck")
Table Thread table selection:
without

ISO metric

Whitworth BSW

Whitworth BSP

UNC

Selection Selection, table value: e.g.
M3; M10; etc. (ISO metric)

W3/4"; etc. (Whitworth BSW)

G3/4"; etc. (Whitworth BSP)

1" - 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 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.
αS Starting angle offset - (only for tapping without compensating chuck)
(only for G code)
S Spindle speed - (only for tapping without compensating chuck)
(only for G code)
Machining (not for The following machining technologies can be selected:
G code "with
1 cut

compensating
chuck")
The thread is drilled in one cut without interruption.
Chipbreaking

The drill is retracted by the retraction amount V2 for chipbreaking.
Chip removal

The drill is retracted from the workpiece for stock removal.
D Maximum depth infeed - (only when used without compensating chuck, stock removal
or chipbreaking)
304
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Unit
MODULUS
Turns/"
mm/rev
in/rev
Degrees
rev/min
mm
Turning