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Instruction and maintenance manual
ENGLISH
STEP THREE - Start the demagnetization cycle and
turn the sheet so that the finished side is in contact
with the extensions. At this point it is possible to fin-
ish the surface roughed in “step one”.
8.6.3 Threading machining – Clamping the part
on mobile extensions
To be able to perform threading operations, it is es-
sential to lift the part to machine in order to allow
the tool to exit without damaging the surface of the
magnetic chuck. The accessories available include
fixed polar extensions (paragraph 5.1.1) that are de-
signed to enhance the circulation of the magnetic
flow and machining. Fix the extensions on the poles
using the screws supplied, then mill them in order
to obtain a supporting surface that is parallel and
aligned with the surface of the magnetic chuck. The
purpose of polar extensions (section 8.3) is to trans-
fer the magnetic flow from the part to machine, while
limiting the loss of force.
ATTENTION! Carefully check the position
of all extensions! The magnetic clamping force
is directly proportional to the number of exten-
sions that are in contact with the part, but also to
the balancing of the north and south poles (para-
graph 8.3).
ATTENTION! Always verify that the exten-
sions do not come into contact with one another,
as this condition could short-circuit the magnetic
flow and prevent it from reaching the part to ma-
chine.
8.6.4 Machining cylindrical parts
To be able to machine parts with a cylindrical shape
or an irregular surface, it is necessary to place the
part directly onto the magnetic chuck and rest it onto
the fixed polar extensions. These extensions prevent
the part from rolling off, but also conduct the mag-
netic flow, thus enhancing the clamping of the part.
Machine the part so that the cutting forces resulting
from the machining are not applied in direction of
the extensions.
Fixed polar extension
Cylinder to machine
8.6.5 Serial machining
In order to machine parts in series or with an ir-
regular profile, it is generally advisable to use polar
extensions or use over-plates. To configure the over-
plate, use polar extensions with the same section of
the poles and join them with non magnetic material
(stainless steel, aluminum, etc.). Always remember
to take into account the polar pitch of the magnetic
chuck both as regards the dimensions of the polar
extensions, which must be equivalent to those of the
poles, and the distances between the poles. At this
point, it is possible to shape the over-plate in order
to obtain a positioning template. All the frame of the
chuck that surrounds the magnetic “islands” (with
the only exception of the area where the discharge
cable is connected) can be drilled to allow the in-
sertion of plugs to aid positioning and removal. The
magnetic chuck can also be used to clamp vices,
partition and part-holding elements in order to be
able to machine parts that are difficult to clamp or
are made of non magnetic material.
