Siemens SINUMERIK 828D Programming Manual page 262

Motion commands
9.10 Thread cutting with constant lead (G33)
Further information
Feedrate for thread cutting with G33
From the programmed spindle speed and the thread lead, the control calculates the required
feedrate with which the turning tool is traversed over the thread length in the longitudinal
and/or transverse direction. The feedrate
maximum axis velocity (rapid traverse) is monitored by the control.
Cylinder thread
The cylinder thread is described by:
● Thread length
● Thread lead
The thread length is entered with one of the Cartesian coordinates X, Y or Z in absolute or
incremental dimensions (for turning machines preferably in the Z direction). Allowance must
also be made for the run-in and run-out paths, across which the feed is accelerated or
decelerated.
The thread lead is entered at addresses
262
is not taken into account for
F
, , ( is preferable for turning machines).
I J K K
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
, the limitation to
G33
Fundamentals