HEIDENHAIN TNC 640 User Manual page 626

16
Programming notes:
If the Tilt working plane or TCPM functions are
active, you cannot change the mode of operation.
In turning mode, no coordinate conversion cycles are
permitted except for the datum shift.
The orientation of the tool spindle (spindle angle)
depends on the machining direction. The tool tip
is aligned to the center of the turning spindle for
outside machining. For inside machining, the tool
points away from the center of the turning spindle.
The direction of spindle rotation must be adapted
when the machining direction (outside/inside
machining) is changed.
During turning, the cutting edge and the center of
the turning spindle must be at the same level. During
turning, the tool therefore has to be prepositioned to
the Y coordinate of the turning-spindle center.
By means of M138, you can select the rotary axes
for M128 and TCPM.
Operating notes:
The preset must be in the center of the turning
spindle in turning mode.
In turning mode, diameter values are displayed on
the X axis position display. The control then shows an
additional diameter symbol.
In turning mode, the spindle potentiometer is active
for the turning spindle (rotary table).
in Turning mode you can use all manual touch
probe cycles, except the Probe corner and Probe
plane cycles. In turning mode the measured values
correspond to the X axis diameter values.
You can also use the smartSelect function to define
the turning functions.
Further information:
functions", page 480
626
"Overview of special
Turning | Basic functions (option 50)
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017