
PROGRAMMING
19. HIGH SPEED CUTTING
FUNCTIONS
B–63614EN/01
370
N9N5N1N9N5
N1
(4)Feedrate clamp based on arc radius
In order that the acceleration in a circular interpolation block must
become a permissible value, the maximum permissible feedrate v for the
programmed circle radius r is calculated from the maximum permissible
feedrate V (parameter setting) in radius R as follows. When the specified
feedrate exceeds the calculated feedrate v, the feedrate is clamped
automatically at the calculated feedrate v.
Maximum permissible acceleration =
V
2
R
R : Circle radius V : Feedrate in circle radius R
The maximum permissible feedrate v for the programmed circle radius r
is obtained in the following expressions.
v +
r
R
Ǹ
V