
A-78395E
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FANUC Series 16
i
/18
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-TA/TB
Specifications of High-Precision Contour
Control forComplex Lathe
2001.02.14 A.Fukumoto
02 2001.10.04
Description of Cs axis and rotary axis are added.
8464 Initial feedrate for automatic feedrate control
[Data type]
Two-word
[Unit of data, Valid data range]
Valid data range
Increment system Unit of data
IS-B IS-C
Millimeter machine 1 mm/min 10—240000 1—100000
Inch machine 0.1 inch/min 10—96000 1—48000
Rotation axis 1 deg/min 10—240000 1—100000
This parameter sets the initial feedrate for automatic feedrate control.
In automatic feedrate control, the initial feedrate set with this parameter is used at the
beginning if no F command is specified in the program.
Usually, set the maximum cutting feedrate (specified in parameter No. 1422).
8465 Maximum allowable feedrate for automatic feedrate control
[Data type]
Two-word
[Unit of data, Valid data range]
Valid data range
Increment system Unit of data
IS-B IS-C
Millimeter machine 1 mm/min 10—240000 1—100000
Inch machine 0.1 inch/min 10—96000 1—48000
Rotation axis 1 deg/min 10—240000 1—100000
This parameter sets the maximum allowable feedrate for automatic feedrate control. Usually,
set the maximum allowable cutting feedrate (set in parameter No. 1422).
8470
Parameter for determining allowable acceleration in feedrate
calculation considering acceleration
[Data type]
Word axis
[Unit of data]
msec
[Valid data range]
0 to 32767
When the function for calculating the feedrate considering the acceleration is used under
automatic feedrate control, this parameter is used to determine the allowable acceleration. The
time required until the maximum cutting feedrate is reached must be specified here.
Allowable acceleration is determined from the maximum cutting feedrate and the value set in
this parameter. Where, the maximum cutting feedrate is any of value set in parameter No.
1432, 1430 or 1422. Which parameter No. is used depends on the following conditions:
· When a value other than 0 is set to No. 1432, the value set to No. 1432 is used.
· When 0 is set to No. 1432 and a value other than 0 is set to No. 1430, the value set to No.
1430 is used.
· When 0 is set to No. 1432 and 1430, the value set to No. 1422 is used.
The shock of the machine and the processing error becomes small by setting this parameter
greatly.