282 ISO Programming
4.19 Thread Cycles
Internal or external threads: See algebraic sign of "U."
Number of cutting passes: The first cut is performed at the cutting
depth defined for “I” and is reduced with each cut until the tool
reaches the “remaining cutting depth R.”
Handwheel superposition (provided that your machine is equipped
accordingly): The superposition is limited to the following range:
X direction: Depending on the current cutting depth without
exceeding the starting and end points of the thread.
Z direction: Maximal 1 thread groove, without exceeding the
starting and end points of the thread.
Definition of taper angle:
XS/ZS, X/Z
XS/ZS, Z, W
ZS, X/Z, W
Cycle stop—the MANUALplus retracts the tool from
the thread groove and then stops all tool movements.
(Lift-off distance: OEM configuration parameter:
cfgGlobalPrperties-threadliftoff)
If you are programming an internal thread, it is advisable
to preset the thread pitch F since the diameter of the
longitudinal element is not the thread diameter. If you
have MANUALplus calculate the thread pitch
automatically, slight deviations may occur.
Cycle run
1 Calculates the number of cutting passes.
2 Executes a thread cut.
3 Returns at rapid traverse and approaches for next pass.
4 Repeats 2 to 3 until the complete thread has been cut.
5 Executes air cuts.
6 Returns to starting point.
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