
B–63523EN–1/03
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
898
The detection unit is normally used as the unit for output from the NC to
the servo system. The nano–interpolation function can perform output to
the servo system in thousandths of the detection unit to increase the
machining precision. This function is effective in improvement in surface
roughness in particular.
The positioning precision differs depends on the machine conditions such
as the resolution of the detector, however.
This function is the most effective when the resolution of the detector is
smaller than the detection unit. It may also be effective when the
resolution of the detector is the same as the detection unit (in a case such
as a closed loop). In this case, the feed–forward function is required to
be used together.
The AI nano high–precision contour control function is the same as the
AI high–precision contour control function except that
nano–interpolation is available. The following describes only AI
high–precision contour control.
RISC processor is necessary, if this function is used. Refer to Subsection
7.1.19 “RISC Processor Operation,” in this manual too.
The following command can be used to turn AI high–precision contour
control mode on or off.
In AI high–precision contour control mode, ”AI HPCC” blinks at the
lower right of the screen.
In AI nano high–precision contour control mode, ”NANO HP” blinks.
G05 P10000 : AI high–precision contour control mode on
G05 P0 : AI high–precision contour control mode off
Specify G05 in an independent block.
In AI high–precision contour control mode, the following functions are
valid. High–speed, high–precision machining can be performed for
minute straight lines and curves such as those made by NURBS
interpolation.
<1> Linear or bell–shaped acceleration/deceleration before interpolation
function (constant acceleration change time type)
<2> Function of decelerating according to the feedrate difference at each
corner
<3> Advanced feed–forward function
<4> Feedrate determination according to the acceleration for each axis
<5> Deceleration function using the cutting load
<6> 200–block multibuffer function
Format
Valid functions