Purpose And Applications Of Positioning Control - Mitsubishi Electric MELSEC-QD75MH1 User Manual

1 PRODUCT OUTLINE

1.1.2 Purpose and applications of positioning control

Punch press (X, Y feed positioning
Gear and ball screw
Y axis
servomotor
Servo
Press head
amplifier
Servo
amplifier
Y axis
Palletizer
Conveyor control
Servomotor
(with brakes)
Servo
amplifier
Compact machining center (ATC magazine positioning)
Servomotor
Coupling
Servo
amplifier
Positioning
pin
PLC
MELSEC-Q
QD75MH
"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.
)
320mm
Y axis X axis
Y axis
Press
punching
X axis
Gear and rack & pinion
X axis
PLC
servomotor
MELSEC-Q
X axis
Conveyor
Position detector
G
Reduction
gears
Ball screw
(From QD75MH)
PLC
MELSEC-Q
QD75MH
Reduction
gears
ATC tool
magazine
Tool
(12 pcs., 20 pcs.)
Rotation direction
for calling
11, 12, 1, 2 or 3
1
20
12 2
19
18
11 Current
3
17
value
16
10 4
retrieval
15
9 5
position 14
13
6
8
12
7
Rotation direction
for calling 5, 6, 7, 8, 9 or 10
<No. of tools: 12> <No. of tools: 20>
•
To punch insulation material or leather, etc.,
15m/min
160mm
as the same shape at a high yield, positioning
(2000r/min)
is carried out with the X axis and Y axis
servos.
15m/min
(1875r/min)
•
After positioning the table with the X axis
12s
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
QD75MH
pattern is changed.
•
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.
Palletizer
Unloader control
•
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.
Rotation direction
for calling
17 to 20, 1 to 5
1
2
3
4
Current
5
value
6
retrieval
7
8
position
9
10
11
Rotation direction
for calling 7 to 16
1 - 5
MELSEC-Q