Methods for making rotors for permanent magnet motors
AssigneeVarco I/P, Inc.
InventorGregory Paul Cervenka
Life of this patent
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Abstract
A method for making a rotor for a permanent magnet motor, the method, in at least certain aspects, including connecting a series of a plurality of guides to a hollow rotor body, the guides spaced-apart and extending longitudinally of the rotor body, the rotor body being generally cylindrical with an interior surface, applying a plurality of magnets to the interior surface of the rotor body, and emplacing a shunt structure over the plurality of magnets to inhibit inter-magnet action during rotor assembly.
Claims20
A method for making a rotor for a permanent magnet motor, the method comprising
- preparing a rotor body for emplacement of magnets thereon, the rotor body having a first end spaced-apart from a second end, the rotor body having a generally cylindrical shape with an interior surface and an exterior surface, the rotor body made of magnetic material,
- applying a plurality of magnets to the interior surface of the rotor body, the magnets held to the rotor body by magnetic force, and
- emplacing a shunt structure over the plurality of magnets to inhibit inter-magnet action.
A method for making a rotor for a permanent magnet motor, the method comprising
- connecting a series of a plurality of magnet guides to a rotor body, the rotor body having a first end spaced-apart from a second end, the guides spaced-apart and extending longitudinally of the rotor body, the rotor body having a generally cylindrical shape with an interior surface and an exterior surface, the rotor body made of magnetic material,
- applying a plurality of magnets to the interior surface of the rotor body between the magnet guides, the magnets held to the rotor body by magnetic force,
- emplacing a shunt structure over the plurality of magnets to inhibit inter-magnet action,
- placing a first end guide at the first end of the rotor body to facilitate magnet placement,
- placing a second end guide at the second end of the rotor body to facilitate magnet placement,
- wherein the shunt structure comprises a plurality of shunt bars, each shunt bar across spaced-apart magnets,
- following emplacement of the plurality of magnets, removing the shunt bars,
- placing at least one plate on the magnets to hold the magnets in position,
- applying magnet guides and magnets to a substantial portion of the interior surface of the rotor body,
- applying adhesive to the magnets to adhere the magnets to the rotor body and to each other,
- curing the adhesive,
- following emplacement of the plurality of magnets, removing the shunt bars,
- securing at least one plate on the magnets to hold the magnets in position, and
- removing the at least one plate following curing of the adhesive.
Dependencies are inferred from the claim text.