Magnetics Business & Technology - January/February 2024 - 14

FEATURE ARTICLE
Magnetic Innovations Develops Robot for Assembling Rotors that Positions Magnets with High
Accuracy
Magnets can be positioned automatically with high accuracy in robot cell at Magnetic Innovations in The Netherlands
Dutch company Magnetic Innovations BV, an expert in the field of
permanent magnet synchronous motor technology, has developed
a robot for automatically assembling the rotors with very high accuracy
in positioning the magnets - important for obtaining a very
homogenous magnetic field while automating a tricky task.
PM synchronous motors consist of a stator assembly and a rotor
assembly. For the stator, several automated manufacturing solutions
on the market apply the copper windings fully automated onto
the stator. But for the rotors, explains the company, in order to assemble
magnets, mostly customer-specific automation solutions
are required as there is no standard equipment available. Or, it is
done by hand.
Seeking to improve the quality of its production line, Magnetic Innovations
developed the robot cell which assembles the rotors
automatically and checks the end result for its specified magnetic
properties. It is the result of a two-year project done in close collaboration
with an external automation and robotization specialist. The
new robot takes away the need for manual labor in rotor manufacturing,
increases manufacturing capacity and helps to improve the
14 Magnetics Business & Technology * January/February 2024
product performance. Here is how the process works.
The robot cell is equipped with internal component storage. Here
the rotor parts and magnets are stored until they are picked up by
the robot to be assembled into the magnetic rotor. The storage
space is suitable for processing rotors for the company's frameless
PMSM motors of the MI-F Series from size 110mm up to and including
485mm.
Based on years of experience with permanent magnet motors, MI
ensures the quality of the motors in multiple ways. It assesses the
quality of a magnetic rotor based upon three key factors: accuracy
of the starting materials used; magnetic field strength across position;
and the adhesive process to mount the magnets to the rotor.
First, an input check takes place, which determines whether the
starting materials have been supplied in accordance with specifications.
In addition, the machine checks each magnet individually, to
see if it is within a specified bandwidth in terms of magnetic properties.
If not, it is registered and rejected and the next magnet is used.
By implementing this quality check, the system is able to obtain a
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Magnetics Business & Technology - January/February 2024

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Magnetics Business & Technology - January/February 2024 - Cover1
Magnetics Business & Technology - January/February 2024 - Cover2
Magnetics Business & Technology - January/February 2024 - Contents
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Magnetics Business & Technology - January/February 2024 - Cover3
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