Mitsubishi Electric MELDAS C6 Programming Manual page 93

10. Spindle Functions
Rotation synchronization
(1) When rotation synchronization control (command with no R address) is commanded with the
G114.1 command, the synchronous spindle rotating at a random rotation speed will
accelerate or decelerate to the rotation speed commanded beforehand for the basic spindle,
and will enter the rotation synchronization state.
(2) If the basic spindle's commanded rotation speed is changed during the rotation
synchronization state, acceleration/deceleration will be carried out while maintaining the
synchronization state following the spindle acceleration/deceleration time constants set in the
parameters, and the commanded rotation speed will be achieved.
(3) In the rotation synchronization state, the basic spindle can be controlled to the constant
surface speed even when two spindles are grasping one workpiece.
(4) Operation will take place in the following manner.
M23 S2=750 ;
:
M03 S1=1000 ;
:
G114.1 H1 D-2 ;
:
S1=500 ;
:
G113 ;
<Operation>
1000
750
500
Forward
run
Rotation
speed
0
(r/min)
Reverse
run
–500
–750
–1000
... Forward rotate 2nd spindle (synchronous spindle) at 750
r/min (speed command)
... Forward rotate 1st spindle (basic spindle) at 1000 r/min
(speed command)
... Synchronize 2nd spindle (synchronous spindle) to 1st
spindle (basic spindle) with reverse run
... Change 1st spindle (basic spindle) rotation speed to 500
r/min
... Cancel spindle synchronization
2nd spindle (synchronous spindle)
reverse run synchronization
1st spindle (basic spindle) forward run
2nd spindle (synchronous spindle) forward run
85
10.7 Spindle synchronous control I
1st spindle (basic spindle) rotation speed change
Basic spindle
Synchronous spindle
Spindle synchronization cancel