
B-63783EN-1/01 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
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- Linear acceleration/deceleration
With linear acceleration/deceleration, the time required for
acceleration/deceleration is the shortest, provided that the acceleration
is the same. Note, however, that if the acceleration is large (the time
constant is low), the stress and strain imposed on the machine system
may be considerable.
The time constant and FL feedrate for each feed is set in the following
parameters.
Feed Time constant FL feedrate
Rapid traverse (constant
acceleration)
Parameter(No.1620) Parameter(No.1621)
Rapid traverse (constant
acceleration time)
Parameter(No.1628) __
Cutting feed Parameter(No.1622) __
Jog feed Parameter(No.1624) __
<Linear acceleration/deceleration>
Feedrate
Specified feedrate
Time
T : Time constant
T
T
- Bell-shaped acceleration/deceleration
With bell-shaped acceleration/deceleration, acceleration/deceleration
is smoothed to reduce the amount of stress and strain imposed on the
machine system when the acceleration is large.
The time constant and FL feedrate for each feed is set for the following
parameters.
Feed Time constant FL feedrate
Rapid traverse (constant
acceleration)
Parameter(No.1620)T
1
Parameter(No.1636)T
2
Parameter(No.1621)
Rapid traverse (constant
acceleration time)
Parameter(No.1628) __
Cutting feed Parameter(No.1622) __
Jog feed Parameter(No.1624) __