B–63522EN/02
5. FEED FUNCTIONS
NC FUNCTION
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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.
For the T series, 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 500.00mm/rev, deg/rev
0.0001mm, deg 0.01 to 500.00mm/rev, deg/rev
0.0001inch 0.0001 to 9.9999inch/rev
0.00001inch 0.0001 to 9.9999inch/rev
Least command increment Cutting feed rate range
0.001mm, deg 0.0001 to 500.0000mm/rev, deg/rev
0.0001mm, deg 0.0001 to 500.0000mm/rev, deg/rev
0.0001inch 0.000001 to 9.999999inch/rev
0.00001inch 0.000001 to 9.999999inch/rev
NOTE
The above feed rates are limits according to the CNC’s
interpolation capacity. When the whole system is
considered there are also limits according to the servo
system. For details, See Appendix A.
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.
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.
5.2.4
Per Revolution Feed
(G95)
D M series
D T series
5.2.5
Inverse Time Feed
(G93) (M series)
M series
5.2.6
F1–digit Feed (M
series)
M series