HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 455)

Basic functions (Option 50) 14.2
14
TNC 640 | User's ManualDIN/ISO Programming | 1/2015
455
Graphical display of turning operations
You can simulate turning operations in the Test Run mode. The
requirement for this is a workpiece blank definition suitable for the
turning process and Option #20.
The machining times shown for milling/turning
operations in the simulation do not correspond to the
actual machining times.
Graphic display in the Programming mode of operation
You can graphically simulate turning processes with the line
graphic in
Programming operating mode. To display the traverse
movements in turning mode in the Programming operating mode,
change the layout using the soft keys, see "Generating a graphic for
an existing program", page 151.
The standard 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.
Even when turning occurs in a 2D plane (X and Z coordinates), with
a rectangular workpiece blank you must still program the Y values
when defining the workpiece blank.
NC syntax
%LT 200 G71 *
N10 G30 G18 X+0 Y-1 Z-50 *
Define the workpiece blank for graphic workpiece
simulation
N20 G31 G90 X+87 Y+1 Z+2 *
N30 T301 *
Tool call
N40 G00 G40 G90 Z+250 * Retract the tool in the spindle axis at rapid traverse
N50 FUNCTION MODE TURN * Activate Turning mode