Mitsubishi Electric MELDAS C6 Programming Manual page 94

10. Spindle Functions
Phase synchronization
(1) When phase synchronization (command with 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.
Then, the phase is aligned so that the rotation phase commanded with the R address is
reached, and the phase synchronization state is entered.
(2) If the basic spindle's commanded rotation speed is changed during the phase 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 phase 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 Rxx ;
:
:
S1=500 ;
:
G113 ;
<Operation>
1000
750
500
Forward
run
Rotation
0
speed
(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
Shift phase of synchronous spindle by R command value
... 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
86
10.7 Spindle synchronous control I
Phase alignment
Spindle synchronization cancel
1st spindle (basic spindle) rotation speed change
Basic spindle
Synchronous spindle