HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 417)

HEIDENHAIN TNC 640 417
13.2 Basis F
unctions (Sof
tw
ar
e Option 50)
Graphical display of turning operations
You can graphically simulate turning processes with the line graphic in
Programming operating mode. The requirement for this is a workpiece
blank definition suitable for the turning process.
The assignment of the axes with turning is defined so that the X
coordinates describe the diameter of the workpiece and the Z
coordinates the longitudinal positions. To display the traverse
movements in Turning mode you must use a workpiece blank
definition with the spindle axis Y.
Even when turning occurs in a 2D plane (X and Z coordinates) you
must still program the Y values when defining the workpiece blank.
The TNC requires the Y expansion for calculating the workpiece blank
cuboid. It is sufficient when you enter small values here such as -1 and
+1, as the Y coordinates in Turning mode are not considered as the
operating axis.
NC syntax
In the Program Test operating mode, you can only use the
3D line graphic for simulating processing in Turning mode.
0 BEGIN PGM SHOULDER MM
1 BLK FORM 0.1 Y X+0 Y-1 Z-50 Definition of workpiece blank
2 BLK FORM 0.2 X+87 Y+1 Z+2
3 TOOL CALL 12 Tool call
4 M140 MB MAX Retract the tool
5 FUNCTION MODE TURN Activate Turning mode