HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 489)

Basic functions (Option 50) 14.2
14
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
489
14.2 Basic functions (Option 50)
Switching between milling/turning mode of
operation
Switching the machine kinematics is a machine-
dependent function.
The machine has to have been adapted by the
machine manufacturer for turning operations and
switching the mode of operation. Refer to your
machine manual.
To switch between milling and turning operations you must switch
to the specific mode.
You can switch these operating modes with the NC functions
FUNCTION MODE TURN and FUNCTION MODE MILL.
The TNC shows a symbol in the status display when the turning
mode is active
Icon Mode of operation
Turning mode active:
FUNCTION MODE TURN
No symbol Milling mode active:
FUNCTION MODE MILL
When the modes of operation are switched between, the TNC
executes a macro that defines the machine-specific settings
for the specific mode of operation. With the NC functions
FUNCTION MODE TURN and FUNCTION MODE MILL you can
activate a machine kinematic model that the machine tool builder
has defined and saved in the macro.
The preset must be in the center of the turning
spindle in turning mode.
The position of the tool tip must be aligned to
the center of the turning spindle. Position the Y
coordinates in Turning mode to the center of the
turning spindle.
Check the orientation of the tool spindle. The tool tip
must be aligned to the center of the turning spindle
for outside machining. The tool tip must be aligned
opposite to the center of the turning spindle for
inside machining.
Check whether the rotation direction of the turning
spindle is correct for the loaded tool.
If you process heavy workpieces with high speeds
then high physical forces occur. Ensure that the
workpiece is firmly clamped to avoid accidents or
machine damage.