Examples Of Ac Servo Systems; Constant Feed; Tapping - Mitsubishi Electric Melsec FX Series Beginners Manual

Positioning by AC Servo System
2.2

Examples of AC servo systems

Positioning indicates the operation to move an object, such as a workpiece or tool (drill or cutter),
from one point to another point and to stop it with efficiency and precision.
In other words, the principle of positioning is the control of speed in accordance with the position,
performed to promptly eliminate the remaining distance to the target position. The flexibility to
change the target position electrically and easily is an important requirement.
Several cases of positioning using an AC servo motor are systematically shown below.
2.2.1

Constant feed

Description
In the press/shear process for cutting, punching, etc., the processed material is positioned with high
precision to produce a constant sized product.
Uncoiler
2.2.2

Tapping

Description
In order to tap a workpiece,
Quick feed
Cutting feed and
Quick return are performed repeatedly.
Slide
Timing
belt
Pulley
2 - 2
Press main unit
Roll feeder
Workpiece
Drill
M
Cutting
Quick
feed
feed
M
Feed
motor
Quick
return
Fig. 2-2:
Schematic drawing
Constant feed
Fig. 2-3:
Schematic drawing
Tapping
Ball
screw
Examples of AC servo systems
220010da
220020da.eps
MITSUBISHI ELECTRIC