Fagor 8025 T CNC, Operating Manual

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118 8025/8030 CNC PROGRAMMING MANUAL
8. (F) PROGRAMMING THE FEEDRATE
The axis feedrate is programmed with the letter "F" and its value depends on the
currently selected work units, millimeters or inches, and type of feedrate, G94 or
G95.
Metric
programming:
Inch
programming:
When operating in inches and with rotary axes, we recommend setting machine
parameter P618(2) to "1" so the programming units in G94 are in degrees/minute.
The machine’s actual maximum feedrate may be limited to a lower value (see instruc-
tion book of the machine).
The machine’s maximum working feedrate can be programmed directly or by using code
F0. For example: On a machine with a maximum programmable working feedrate of 1000
mm/min. it makes no difference whether F1000 or F0 is programmed.
The programmed feedrate F is effective when operating on linear interpolation (G01) or
circular interpolation (G02/G03).
Should the F function not be programmed, the CNC will assume the F0 feed.
When operating on positioning (G00), the machine will move in rapid regardless of the F
programmed.
The rapid speed is set for each axis during the final adjustment of the machine, the
maximum possible value being 65.535 m/min. (See instruction book of the machine).
The programmed feedrate can be varied between 0% and 120% or between 0% and 100% according
to P600(3) by means of the knob on the front panel of the CNC as long as it is not executing a
threading operation with any of the functions G33, G86, G87 during probing movements (G57).
Notes: If a very slow feedrate is required, use G95.
. If no spindle encoder has been installed (such as on a surface grinder), connect
an encoder to a 1 rpm gear motor (clock motor for example) to obtain feedrate
per minute in G95.
Programming
format
Programming
unit
Minimum value Maximum value
G94 F 4 F1= 1mm/min
F1
(1 mm/min)
F9999
(9999 mm/min)
G95 F3.4 F1= 1mm/rev.
F0.001
(0.001 mm/rev.)
F500.0000
(500 mm/rev.)
Programming
format
Programming
unit
Minimum value Maximum value
G94 F 4 F1= 0.1 inch/min
F1
(0.1"/min)
F3937
(393.7 inch/min)
G95 F 3.4 F1= 1 inch/rev.
F0.0001
(0,0001"/rev.)
F19.6850
(19,6850 inch/rev.)
P618(2) Only rotary axis Interpolation of rotary and linear axes
G94
P618(2)=0 F1= 2.54°/min F1= 1 inch/min
P618(2)=1 F1= 1°/min F1= 1 inch/min