
B-63782EN/01 NC FUNCTIONS 19.FUNCTIONS FOR HIGH-SPEED CUTTING
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19.2 ADVANCED PREVIEW CONTROL
With the FANUC Series 15i , the look-ahead acceleration/deceleration
before interpolation function is used for high-speed, high-precision
machining, instead of advanced preview control.
The look-ahead acceleration/deceleration before interpolation function
supports functions equivalent to the linear acceleration/ deceleration
before interpolation function and the automatic corner deceleration
function supported by advanced preview control.
19.3 NANO INTERPOLATION
The output from the NC to the servo is usually in units of detection
units. This function allows output to the servo in units of thousandths
of detection units, thereby improving machining precision. This is
particularly effective for improving the surface roughness.
Note that the positioning precision depends on the machine conditions,
such as the resolution of the detector.
This function is part of the look-ahead acceleration/deceleration before
interpolation function. When the look-ahead acceleration/ deceleration
before interpolation function is enabled, nano interpolation is also
enabled.