HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 166)

Programming: Tools
5.1 Entering tool-related data
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015
5.1 Entering tool-related data
Feed rate F
The feed rate F is the speed at which the tool center point moves.
The maximum feed rates can be different for the individual axes
and are set in machine parameters.
Input
You can enter the feed rate in the TOOL CALL block (tool call) and
in every positioning block (see "Creating the program blocks with
the path function keys", page 206). In millimeter-programs you
enter the feed rate
F in mm/min, and in inch-programs, for reasons
of resolution, in 1/10 inch/min. Alternatively, with the corresponding
soft keys, you can also define the feed rate in mm per revolution
(mm/rev)
FU or in mm per tooth (mm/tooth) FZ.
Rapid traverse
If you wish to program rapid traverse, enter F MAX. To enter FMAX,
press the ENT key or the FMAX soft key when the dialog question
FEED RATE F = ? appears on the control's screen.
To move your machine at rapid traverse, you can
also program the corresponding numerical value,
e.g.
F30000. Unlike FMAX, this rapid traverse
remains in effect not only in the individual block but
in all blocks until you program a new feed rate.
Duration of effect
A feed rate entered as a numerical value remains in effect until a
block with a different feed rate is reached.
FMAX is only effective in
the block in which it is programmed. After the block with F MAX is
executed, the feed rate will return to the last feed rate entered as a
numerical value.
Changing during program run
You can adjust the feed rate during program run with the feed-rate
potentiometer F.