Siemens SINUMERIK 840D sl Operating Manual page 321

Parameter Description
Table Thread table selection:
● without
● ISO metric
● Whitworth BSW
● Whitworth BSP
● UNC
Selection Selection of 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
When entered per inch, enter the integer number in front of the decimal point in the
"without")
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 in The following machining operations can be selected:
the "with compen‐
● 1 cut
sating chuck"
The thread is drilled in one cut without interruption.
mode)
● Chipbreaking
The drill is retracted by the retraction amount V2 for chipbreaking.
● Swarf removal
The drill is retracted from the workpiece for swarf removal.
D Maximum depth infeed - (only when used without compensating chuck, swarf removal
or chipbreaking)
Retraction Retraction distance - (for chipbreaking only)
● Manual
Retraction distance after each machining step (V2)
● Automatic
The tool is retracted by one revolution.
V2 Retraction distance after each machining step – (only without compensating chuck, chip‐
breaking and manual retraction)
Distance by which the drill is retracted for chipbreaking.
Turning
Operating Manual, 05/2017, A5E40868721
Programming technology functions (cycles)
10.1 Drilling
Unit
MODULUS
Turns/"
mm/rev
in/rev
Degrees
rev/min
mm
mm
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