
PROGRAMMING
B–63664EN/02
16. HIGH SPEED CUTTING FUNCTIONS
309
The functions listed below are valid in the AI contour control/AI nano
contour control mode:
⋅ Nano–interpolation (only in the AI nano contour control mode)
⋅ Look–ahead linear acceleration/deceleration before interpolation
⋅ Look–ahead bell–shaped acceleration/deceleration before interpolation
(The option of look–ahead bell–shaped acceleration/deceleration
before interpolation is required.)
⋅ Automatic corner deceleration
⋅ Feedrate clamping by acceleration
⋅ Feedrate clamping by arc radius
⋅ Block overlap (up to five blocks)
⋅ Advanced preview feed forward
Nano–interpolation calculates a position command to be output to the
digital servo in nanometers (nm) for a conventional program. Using the
calculation results, a smooth position command is output to the servo, so
the machine can be moved smoothly and the surface precision is
improved.
Combination with HRV
control improves the
follow–up ability.
Calculates the
position precisely.
Uses a conventional
program.
NC program
Nano–
interpolation
High–precision
servo control
Servo motor
NOTE
The positioning precision depends on the detection unit.
For a cutting feed command in the feed per minute mode, linear
acceleration/deceleration can be applied before interpolation, that is, for
the specified feedrate by reading up to 40 blocks (in the AI contour control
mode) or 180 blocks (in the AI nano contour control mode) in advance.
With acceleration/deceleration after interpolation, the interpolated data is
changed because acceleration/deceleration is applied to the data. With
acceleration/deceleration before interpolation, the interpolated data
cannot be changed by acceleration/deceleration because acceleration/
deceleration is applied to the feedrate data before interpolation. For this
reason, the interpolated data can always be applied to the specified
straight line or curve to eliminate machining profile errors caused by
acceleration/deceleration delays.
D Functions valid in the AI
contour control/AI nano
contour control mode
D Nano–interpolation (only
in the AI nano contour
control mode)
D Look–ahead linear
acceleration/deceleration
before interpolation