
PROGRAMMING
B–63534EN/02
19. HIGH SPEED CUTTING FUNCTIONS
513
(2) A proper acceleration is determined under the condition that the
acceleration change must be about the same as the setting so that
parameter changes do not cause considerable shock to the machine,
that is:
Acceleration after change Acceleration before change
=
Acceleration change time Acceleration change time
after change before change
The acceleration change time is regarded to be the sum of the
acceleration change time of bell–shaped acceleration/deceleration
and the time constant of acceleration/deceleration after interpolation,
and the acceleration A’ for the acceleration/deceleration before
interpolation is determined as follows:
TcT
TcT
AA
+
+
*=
2
'2
'
A: Acceleration for the acceleration/deceleration before interpolation
Tc:Time constant of acceleration/deceleration after interpolation
Acceleration/deceleration is performed using T2’ and A’, determined
as described above.