Siemens SINUMERIK 840Di sl - Page 165

Motion commands
4.15 Thread cutting with constant lead (G33)
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
165
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Right-hand/left-hand threads
Right-hand or left-hand threads are set according to the spindle direction:
M3: Clockwise
M4: CCW rotation
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
Thread cutting with constant speed
X Y Z
End point in Cartesian coordinates
I
Thread lead in X direction
J
Thread lead in Y direction
K
Thread lead in Z direction
Z
Longitudinal axis
X
Transverse axis
Z... K...
The thread length and thread lead for cylinder threads
X... I...
Thread diameter and thread lead for face threads
I... K...
The dominant direction share for tape thread in X or Z
K (taper thread)
Lead angle <45°, thread lead in longitudinal direction