Siemens sinumerik 808d Programming And Operating Manual page 188

Cycles
2.5 Turning cycles
Parameter
PSYS
PITA
PSYS
PSYS
PSYS
PSYS
Function
Use the thread cutting cycle to produce cylindrical and tapered external and internal threads
with constant lead in longitudinal and face machining. The thread can be single or multiple.
With multiple threads, the individual thread turns are machined one after the other.
The infeed is performed automatically; you can choose between the variants constant infeed
per cut or constant cutting cross-section.
Right-hand or left hand thread is determined by the direction of rotation of the spindle which
must be programmed prior to the cycle start.
Both feed and spindle override are ineffective in the traversing blocks with thread.
188
Data type Description
INT
Internal parameter, only the default value 0 is possible
Values:
INT Unit of parameter PIT (thread pitch)
Values:
STRING Internal parameter, only the default value 0 is possible
Values:
STRING Internal parameter, only the default value 0 is possible
Values:
STRING Internal parameter, only the default value 0 is possible
Values:
INT Internal parameter, only the following values are possible
Values:
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
0
1 pitch in mm/revolution
2 pitch in threads per inch(TPI)
" "
" "
" "
0 Longitudinal thread
10 Face thread
20 Taper thread
Turning Part 2: Programming (Siemens instructions)