Siemens SINUMERIK 840D, Руководство по эксплуатации, Страница: 278 / 610

Programming technological functions (cycles)
8.1 Drilling
Milling
278
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Parameter Description Unit
Pitch - (only
machining without
encoder)

User input
Pitch results from the input

Active feedrate
Pitch results from the feedrate
(only for G code)
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
- (selection
option only for
table selection
"without")
Pitch ...
 in MODULUS: MODULUS = Pitch/π

in turns per inch: Used with pipe threads, for example.
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.
MODULE
Turns/"
mm/rev
in/rev
αS Starting angle offset - (for rigid tapping only) Degrees
S Spindle speed - (for rigid tapping only) rev/min
Machining (rigid
tapping)
The following machining operations can be selected:
 1 cut
The thread is drilled in one cut without stopping
 Chipbreaking
The drill is retracted by the retraction amount V2 for chipbreaking.
 Stock 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)
mm
Retraction Retraction distance - (only without compensating chuck, chipbreaking)
 Manual
Retraction distance after each machining step (V2)
 Automatic
Without retraction distance after each machining step