
11. OPTION RELATED TO SPINDLE
B–65162E/03
484
On a machine having two spindles (such as a lathe), the rotational spindle
speed of both spindles must be the same in the following cases:
– When a workpiece on the 1st spindle is passed to the 2nd spindle while
the spindles are rotating
– When a workpiece is held by both the 1st and 2nd spindles and the
spindles are accelerated or decelerated
The rotation phase (angle) of the spindles must also be the same when a
workpiece of a special shape is passed between the spindles.
The spindle synchronization control function is used to synchronize the
two spindles in the above cases.
(1) αC Series Spindle
(a) When the spindle and spindle motor are connected by a belt or gears
Position
coder
Gears or timing belt
1 : 1
1st
spindle
2nd
spindle
Con-
nected
with
belt or
gears
Spindle
motor
Power
line
Velocity
feedback
Spindle
amplifier
module
(SPM)
Communication
cable
Communication cable
(Note)
CNC
Gears or timing belt
1 : 1
Spindle
motor
Power
line
Velocity
feedback
Spindle
amplifier
module
(SPM)
Position
coder
Position
feedback
Position
feedback
Connected
with belt or
gears
11.4
SPINDLE
SYNCHRONIZATION
CONTROL
11.4.1
Outline
11.4.2
System Configuration