HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 345)

13 MOD Functions 330
Another cuboid ( ) represents the blank form. The TNC takes its
dimensions ( ) from the workpiece blank definition in the selected
program. The workpiece cuboid defines the coordinate system for
input. Its datum lies within the cuboid. You can see in the cuboid
the position of the datum for input by pressing the corresponding
soft key in the 2nd soft-key row.
For a test run it normally does not matter where the workpiece
blank is located within the working space. However, if you test
programs that contain movements with M91 or M92, you must
graphically shift the workpiece blank to prevent contour damage.
Use the soft keys shown in the table at right.
You can also activate the working-space monitor for the Test Run
mode in order to test the program with the current datum and the
active traverse ranges (see table at right, bottommost soft key).
13.1
1 Sho
wing the W
o
rkpiece
in
the
W
o
rking Space (not
TNC 41
0) Function Soft key
Move workpiece blank to the left
(graphically)
Move workpiece blank to the right
(graphically)
Move workpiece blank forward
(graphically)
Move workpiece blank backward
(graphically)
Move workpiece blank upward
(graphically)
Move workpiece blank downward
(graphically)
Show workpiece blank referenced to
the set datum
Show the entire traversing range referenced
to the displayed workpiece blank
Show the machine datum in
the working space
(Show the position defined in the
working space (e.g.
tool change position) as defined
by the machine tool builder
Show the workpiece datum in
the working space
Enable (ON) or disable (OFF) work space
monitoring
Pkap13.pm6 29.06.2006, 08:07 330