Siemens SINUMERIK 840Di sl - Page 168

Motion commands
4.15 Thread cutting with constant lead (G33)
Fundamentals
168 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
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Cylinder thread
A cylinder thread is described by the thread length and thread lead.
The thread length is entered in absolute or incremental dimensions with one of the Cartesian
coordinates X, Y, or Z. The Z direction is preferred on turning machines. 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 I, J, K, on turning machines preferentially with K.
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