HEIDENHAIN TNC 640 (34059x-02) - Manual (Page 231)

Path contours – FK free contour programming 6.6
6
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
231
Free circular path programming
Circular arc without tangential connection
To display the soft keys for free contour
programming, press the FK key
To initiate the dialog for free programming of
circular arcs, press the FC soft key. The TNC
displays soft keys with which you can directly
enter data on the circular arc or the circle center
Enter all known data in the block by using
these soft keys. The FK graphic displays the
programmed contour element in red until
sufficient data is entered. If the entered data
describes several solutions, the graphic will
display the contour element in green (See "FK
programming graphics", page 227)
Circular arc with tangential connection
If the circular arc connects tangentially to another contour element,
initiate the dialog with the FCT soft key:
To display the soft keys for free contour
programming, press the FK key
To initiate the dialog, press the FCT soft key
Enter all known data in the block by using the soft
keys