Operating Cycle - Pfeifer HIT 125 Traduction Du Manuel D'utilisation Original

4.4 Operating cycle

Magnetic circuit with two permanent magnet cores with
high coercitivity of which one is static (1) and one is
reversible (2) operating on pole shoes (3) and
ferromagnetic crown (4).
In the MAG phase (Fig. A), the reversible core is in
parallel with the static core. This generates a magnetic
field which is completed through the workpiece by
means of the pole shoes (3).
In the DEMAG phase (Fig. B), the two cores are placed
in series (180° rotation of the reversible core) to form a
magnetic field which is short-circuited in the ferrous
yoke.
4
1
N
2
S
S
3
5
S
Fig. A: "MAG" Phase
1 = Static permanent magnet
2 = Reversible permanent magnet
3 = Magnetic flux collectors
(poles)
4 = Ferromagnetic crown
5 = Ferromagnetic workpiece to be
clamped
S
N
N
N
N
S
N S
Fig. B: "DEMAG" Phase
HIT Manual lifters 08/2015 / Subject to technical changes!
4
1
S
2
N
3
5
7