Examples Of Ac Servo Systems - Mitsubishi MELSEC-F Training Manual

Positioning Control
2.2

Examples of AC servo systems

• Positioning indicates the operation to move an element, such as a workpiece or tool (drill or
cutter) from a certain position (point) to another target position (point) and stop it with high
efficiency and high 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.
In the press/shear process for cutting,
punching, etc., the processed material is
positioned with high precision to produce a
constant sized product.
In order to tap a workpiece, "1. Quick
feed", "2. Cutting feed" and "3. Quick
return" are repeatedly performed.
Drilling in steel sheet
In order to perform processing on a flat
face, positioning with high precision is
performed by two motors (X axis feed
motor and Y axis feed motor).
Constant feed
Tapping
Positioning by AC Servo System 2
2-3