Siemens SINUMERIK 840DE Programming Manual page 155

Programming
Cylinder thread
G33 Z... K ... SF=...
Face thread
G33 X... I... SF=...
Taper thread
G33 X... Z... K... SF=...
Or
G33 X... Z... I... SF=...
Parameters
G33
X Y Z
I
J
K
Z
X
Z... K...
X... I...
I... K...
K (taper thread)
I (taper thread)
I... or K...
SF=
Example of double cylinder thread with start point offset
Machining a double cylindrical thread in offset steps with starting point offset 180°.
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
4.15 Thread cutting with constant lead (G33)
Thread cutting with constant speed
End point in Cartesian coordinates
Thread lead in X direction
Thread lead in Y direction
Thread lead in Z direction
Longitudinal axis
Transverse axis
The thread length and thread lead for cylinder threads
Thread diameter and thread lead for face threads
The dominant direction share for tape thread in X or Z
Lead angle <45°, thread lead in longitudinal direction
Lead angle >45°, thread lead in transverse direction
I or K can be stated at thread lead = 45°
Starting point offset, only needed for multiple threads
Programming Motion Commands
4-49