HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 415)

HEIDENHAIN TNC 640 415
13.2 Basis F
unctions (Sof
tw
ar
e Option 50)
13.2 Basis Functions (Software
Option 50)
Switching between milling/turning mode of
operation
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
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.
The machine has to have been adapted by the machine
manufacturer for turning operations and switching the
mode of operation. The machine tool manual provides
further information.
Mode of operation Symbol
Turning mode active: FUNCTION MODE TURN
Milling mode active: FUNCTION MODE MILL No symbol
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.