
5.FEED FUNCTION NC FUNCTIONS B-63782EN/01
- 74 -
5.2.4 Feed Per Revolution (G95)
With the per revolution feed mode G95, tool feed rate per revolution of
the spindle is directly commanded by numeral after F. A position coder
must be mounted on the spindle.
However, the feed-per-revolution command can be enabled by setting the
corresponding parameter accordingly, even when the position coder is
not installed (feed per revolution without position coder).
Least command increment Cutting feed rate range
0.001mm,deg 0.01 to 500mm/rev,deg/rev
0.0001mm,deg 0.01 to 500mm/rev,deg/rev
0.0001inch 0.0001 to 50inch/rev
0.00001inch 0.0001 to 50inch/rev
(If the input unit differs from the machine unit, the feedrate range differs
from the above table.)
NOTE
The above feed rates are limits according to the NC's
interpolation capacity. When the whole system is
considered there are also limits according to the
servo system.
5.2.5 Inverse Time Feed (G93)
Inverse time feed mode is commanded by G93, and inverse time by F
code. Inverse time is commanded with the following value in a 1/min
unit.
- In linear interpolation
F: Speed/distance
- In circular interpolation
F: Speed/radius
When F0 is commanded, alarm occurs.
5.2.6 One-digit F Code Feed
When a 1-digit number from 1 to 9 is commanded after the F, the preset
speed corresponding the 1-digit number commanded is set as feed rate.
When F0 is commanded, rapid traverse is set.
Set the F1-digit feed rate change input signal on from the machine side,
and rotate the manual pulse generator. Feed rate of the currently selected
speed can be changed.
Feed rate set or changed will be memorized even after power is turned
off.