Siemens SINUMERIK 840D sl Operating Manual page 579

The last swivel plane remains active after a program reset or when the power fails. The
behavior at reset and power on can be set using machine data.
Block search when swiveling the plane / swiveling the tool
For block search with calculation, after NC start, initially, the automatic rotary axes of the active
swivel data set are pre-positioned and then the remaining machine axes are positioned. This
does not apply if a type TRACYL or TRANSMIT transformation is active after the block search.
In this case, all axes simultaneously move to the accumulated positions.
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 record
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.
Retraction
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).
Milling
Operating Manual, 05/2017, A5E40868956
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Programming technological functions (cycles)
10.6 Further cycles and functions
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