
PROGRAMMING
19. HIGH SPEED CUTTING
FUNCTIONS
B–64124EN/01
398
In Look–ahead bell–shaped acceleration/deceleration before
interpolation, the speed during acceleration/deceleration is as shown in
the figure below.
Specified
speed
Speed
Non–linear
acceleration/deceleration
Non–linear
acceleration/deceleration
Linear
acceleration/deceleration
T1
T2 T2
Time
T1: Time determined from the specified speed and the specified acceleration
Specified acceleration:
In case of AI contour control
Parameter No.1770/Parameter No.1771
T2: Acceleration change time
In case of AICC : Parameter No.1772
Fig.19.4 (a)
The time T1, shown above, varies with the specified speed. If the
specified speed is low, the speed will be as shown below, causing linear
acceleration/deceleration not reaching the specified acceleration.
19.4
LOOK–AHEAD
BELL–SHAPED
ACCELERATION/DEC
ELERATION BEFORE
INTERPOLATION
TIME CONSTANT
CHANGE FUNCTION
General