
19.HIGH-SPEED CUTTING FUNCTIONS PROGRAMMING B-63944EN/02
- 560 -
19.2.2 Look-Ahead Smooth Bell-Shaped Acceleration/Deceleration
before Interpolation
Overview
In look-ahead bell-shaped acceleration/deceleration before interpo-
lation performs smooth acceleration/deceleration by changing the
acceleration at a constant rate in specified acceleration change time.
In look-ahead smooth bell-shaped acceleration/deceleration before
interpolation, the jerk change time is specified in parameter No. 1790
by using the percentage to the acceleration change time for look-ahead
bell-shaped acceleration/deceleration before interpolation, and change
of acceleration is also controlled so that the change is bell-shaped.
This enables smoother acceleration/deceleration, therefore reducing
machine vibration and shock due to acceleration/ deceleration.
(Look-ahead bell-shaped
acceleration/deceleration before interpolation)
(Look-ahead smooth bell-shaped
acceleration/deceleration before interpolation)
Time
Tangential feedrate
cceleration
Jerk
acceleration
Jerk
acceleration
cceleration change time
Time set in parameter No.
1772
Jerk change time
Time set in parameter No.
1790 by using the
percentage to the
acceleration change time
Tangential feedrate
Time
Time
Time
Time Time
cceleration
CAUTION
Before look-ahead smooth bell-shaped acceleration/deceleration before interpolation
can be used, the option for jerk control and AI contour control II is required.