Entering Tool-Related Data; Feed Rate F - HEIDENHAIN TNC 640 User Manual

6
6.1

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 T block and in every positioning
block.
Further information:
page 162
You enter the feed rate F in mm/min in millimeter programs, and in
1/10 inch/min in inch-programs, for resolution reasons.
Rapid traverse
If you wish to program rapid traverse, enter G00.
To move your machine at rapid traverse, you can also
program the corresponding numerical value, e.g. G01
F30000. Unlike G00, 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. G00 is only effective in
the block in which it is programmed. After the block with G00 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 the program run with the feed
rate potentiometer F .
The feed rate potentiometer lowers the programmed feed rate, not
the feed rate calculated by the control.
234
"Programming tool movements in DIN/ISO",
Tools | Entering tool-related data
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017