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08/2005 Creating a ShopTurn Program
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♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition 4-139
Cylinder blank
Tube blank
Retraction
The retraction area marks the area outside of which collision-free
traversing of the axes must be possible.
For each direction of movement, you define a retraction plane that is
only traversed in that direction of movement during positioning. The
retraction planes depend on the shape of the blank and the type of
retraction (simple, expanded, or all).
XRA: outer retraction plane in the direction X (abs)
XRI: inner retraction plane in direction X (abs or inc)
ZRA: outer retraction plane in the direction Z (abs)
ZRI: inner retraction plane in direction Z (abs or inc)
The retraction planes XRA and XRI are always placed in a circle
around the blank, even for rectangular and N-angle blanks.
Retraction tube: simple
Retraction tube: all
The retraction for a cycle ends at the safety distance. Only the
subsequent cycle moves to the retraction plane. This allows the use of
the special approach/retraction cycle (see Sec. "Programming the
approach/retraction cycle").
A change to the retraction plane is already in effect during retraction
from the previous machining (see Sec. "Changing program settings").
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