Siemens SINUMERIK 840D Operation/Programming Manual page 308

3
Programming with ShopMill
3.10 Miscellaneous functions
3.10.7 Swiveling
3-308
You can use swivel heads or swivel tables to create and/or machine
inclined planes.
It is not necessary to program the swivel axes of the machine (A, B,
C), since you can specify the rotations around the geometry axes (X,
Y, Z) of the workpiece coordinate system directly as described in the
relevant workpiece drawing.
The rotation of the workpiece coordinate system in the program is
then automatically converted to a rotation for the relevant swivel axis
of the machine during machining.
The swivel axes are always rotated to place the machining plane
perpendicular to the tool axis for machining. During machining, the
machining plane is permanently set.
When the coordinate system is swiveled, the previously set work
offset is automatically converted for the swiveled state.
The main programming procedure is:
1. Swivel the coordinate system into the plane to be machined.
2. Program machining in the X/Y plane in the usual way.
3. Swivel the coordinate system back to its original position.
It is possible the software limit switches may be violated in the
swiveled plane when approaching the programmed machining. In this
case, ShopMill travels along the software limit switches above the
retraction plane. In the event of violation below the retraction plane,
the program is interrupted with an alarm for safety's sake. 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.
In a swiveled plane the "Workpiece zero" function is operative but not
the "Measure tool" function.
The swiveled coordinates are retained in reset state and even after
power ON, i.e. you can still retract from an inclined hole by retracting
in +Z direction.
Please refer to the machine manufacturer's instructions.
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
3
10.04
 Siemens AG, 2004. All rights reserved