Mitsubishi Electric MELSEC-Q QD75M User Manual page 23

1 PRODUCT OUTLINE
Lifter (Storage of Braun tubes onto aging rack)
B conveyor
Lifter
Counter-
weight
Reduction
gears
G1
Servomotor
(with brakes)
Index table (High-accuracy indexing of angle)
PLC
MELSEC-Q
Digital switch
Index table
Worm gears
Inner surface grinder
Servomotor
G
Inverter
Servo
amplifier
220VAC
60Hz
PLC
MELSEC-Q
QD75
Loader/unloader
Aging rack
C conveyor
A conveyor
G2
Loader
Servomotor
Servo
amplifier
QD75
Detector
Servomotor
Motor
Workpiece
IM
Grinding stone
G
Motor
G
IM
Fix the grinding
stone, feed the
workpiece, and grind.
Operation panel
a. Total feed
a d
amount (µm)
b. Finishing
b e
feed amount (µm)
c. Compensation
c
amount (µm)
•
Unloader
•
Servo
amplifier
QD75
PLC MELSEC-Q
•
Servo
amplifier
•
•
Inverter
d. Rough grind-
ing speed (µm/s)
e. Fine grinding
speed (µm/s)
1 - 6
During the aging process of Braun tubes,
storage onto the rack is carried out by
positioning with the AC servo.
The up/down positioning of the lifter is carried
out with the 1-axis servo, and the horizontal
position of the aging rack is positioned with the
2-axis servo.
The index table is positioned at a high accuracy
using the 1-axis servo.
The grinding of the workpiece's inner surface
is controlled with the servo and inverter.
The rotation of the workpiece is controlled with
the 1-axis inverter, and the rotation of the
grinding stone is controlled with the 2-axis
inverter. The workpiece is fed and ground with
the 3-axis servo.
MELSEC-Q