Mitsubishi Electric D75D4, User Manual

Page: 29 / 896

1 - 5
MELSEC-Q
1 PRODUCT OUTLINE
1.1.2 Purpose and applications of positioning control
"Positioning" refers to moving a moving body, such as a workpiece or tool (hereinafter,
generically called "workpiece") at a designated speed, and accurately stopping it at the
target position. The main application examples are shown below.
Punch press (X, Y feed positioning
)
QD75
15m/min
(1875r/min)
Press punching
12s
15m/min
(2000r/min)
160mm
320mm
Gear and ball screw
Y axis
servomotor
X axis
servomotor
Servo
amplifier
Servo amplifier
Press head
Y axis
Y axis
Y axis
X axis
X axis
X axis
Gear and rack & pinion

To punch insulation material or leather, etc.,
as the same shape at a high yield, positioning
is carried out with the X axis and Y axis
servos.

After positioning the table with the X axis
servo, the press head is positioned with the Y
axis servo, and is then punched with the
press.

When the material type or shape changes, the
press head die is changed, and the positioning
pattern is changed.
Palletizer
Conveyor
Conveyor control
Servomotor
(with brakes)
Servo amplifier
Reduction
gears
Ball screw
Position detector
Unloader control
Palletizer
(From QD75)
QD75

Using the servo for one axis, the palletizer is
positioned at a high accuracy.

The amount to lower the palletizer according to
the material thickness is saved.
Compact machining center (ATC magazine positioning)
Servomotor
Servo
amplifier
Coupling
Reduction
gears
Positioning pin
ATC tool
magazine
Tool
(12 pcs., 20 pcs.)
Rotation direction
for calling
11, 12, 1, 2 or 3
<No. of tools: 20> <No. of tools: 12>
QD75
Current
value
retrieval
position Current
value
retrieval
position
Rotation direction
for calling
17 to 20, 1 to 5
Rotation direction
for calling 7 to 16 Rotation direction
for calling
5, 6, 7, 8, 9 or 10

The ATC tool magazine for a compact
machining center is positioned.

The relation of the magazine's current value
and target value is calculated, and positioning
is carried out with forward run or reverse run to
achieve the shortest access time.