
PROGRAMMING
B–64124EN/01
19. HIGH SPEED CUTTING
FUNCTIONS
401
the acceleration/deceleration reference speed is set in parameter No.
7066.
Because these parameters must be set in input unit, when the input unit
is changed, these parameters must be changed.
This method is used if the G05.1Q1 block does not have an F command.
The speed specified with the F command issued when a cutting block
group (such as G01 and G02) starts is assumed the
acceleration/deceleration reference speed,
This method is used if the G05.1Q1 block does not have an F command
and the parameter of the acceleration/deceleration reference speed is set
to 0.
(G00)
G01 X––– Y––– Z––– F*** ;
X––– Y––– Z–––
X––– Y––– Z–––
X––– Y––– Z–––
G00 ;
Cutting block group
Even if an F command is issued before a cutting block group and the F
command is effective to the cutting block group modally, the speed
specified with the modal F effective at the start of cutting will be assumed
the acceleration/deceleration reference speed.
Optimum bell–shaped acceleration/deceleration before interpolation, as
mentioned here, refers to bell–shaped acceleration/deceleration before
interpolation in which linear acceleration/deceleration not reaching the
specified acceleration/deceleration does not occur if T2 > T1. Calculation
is performed as described below.
(1) If the bell–shaped acceleration/deceleration before interpolation time
constant T2’ is calculated under the condition that the bell–shaped
acceleration/deceleration before interpolation must not have a linear
portion,
A
F2T
2T
*
=
’
T2: Acceleration change time specified for bell–shaped acceleration/
deceleration before interpolation
F: Acceleration/deceleration reference speed
A: Acceleration for the acceleration/deceleration before interpolation
(2) Setting the speed on
the Parameter
(3) Using the speed
specified with the F
command issued at
the start of cutting as
the reference speed
D Acceleration/deceleratio
n parameter calculation
method