Siemens SINUMERIK 828D Operating Manual page 304

Programming technological functions (cycles)
8.4 Further cycles and functions
Aligning tools
In contrast to "Swivel plane", no rotation is operative in the active frame chain (WCS) in the
case of "Swivel tool" or "Align milling tool". Only the offsets calculated by the NC and the
corresponding tool orientation are effective.
The maximum angular range for "Align milling tool" is limited by the traversing range of the
participating rotary axes.
Name of the swivel data set
Selecting the swivel data set or deselecting the swivel data set.
The selection can be hidden by the machine data.
Approaching a machining operation
When approaching the programmed machining operation in the swiveled plane, under worst
case conditions, the software limit switches could be violated. In this case, the system travels
along the software limit switches above the retraction plane. In the event of violation below
the retraction plane, for safety reasons, the program is interrupted with an alarm. To avoid
this, before swiveling, e.g. move the tool in the X/Y plane and position it as close as possible
to the starting point of the machining operation or define the retraction plane closer to the
workpiece.
Retracting
Before swiveling the axes you can move the tool to a safe retraction position. The retraction
versions available are defined when starting up the system (commissioning).
The retraction mode is modal. When a tool is changed or after a block search, the retraction
mode last set is used.
Risk of collision
You must select a retraction position that avoids a collision between the tool and workpiece
when swiveling.
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Machine manufacturer
Please also refer to the machine manufacturer's instructions.
Machine manufacturer
Please also refer to the machine manufacturer's instructions.
WARNING
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
HMI sl Milling