Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Maeick Blanc

Bertrand Vedy

Frederic Progin

A method for manufacturing an inner rotor for a rotary electric machine, the rotor comprising a plurality of pole pieces surrounding a shaft, each pole piece being made from a stack of metal sheets () made of magnetic material, the pole pieces delimiting recesses between them for permanent magnets. The method comprises, in succession the steps of cutting blanks () each grouping together n metal sheets (), 'n' being the number of poles of the rotor, the n metal sheets of a blank being held together by temporary bridges () straddling the recesses, at least two bridges each comprising an outer lug (), stacking the blanks while keeping them aligned via the outer lugs, immobilizing the stack of blanks, and eliminating all the temporary bridges in order to free up the radial access to the recesses.

Method for manufacturing an inner rotor for a rotary electric machine

A buried-magnet internal rotor () for an electric rotating machine, the rotor including a shaft (), a plurality of polar parts () made of a magnetic material surrounding the shaft, the polar parts delimiting housings () between them, a first lateral shroud () and a second lateral shroud (') axially on each side of the polar parts along the shaft (), the shaft passing through each lateral shroud through a central opening in each lateral shroud, at least one tie-rod () per polar part, the tie-rod clamping each polar part between the lateral shrouds, permanent magnets () placed in the housings (), wherein the shaft includes, for the first lateral flange (), an internal shoulder () designed to form an axial abutment against which the first flange is held axially by an external ring () secured to the shaft.

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Chatonnaye, Switzerland

Maeick Blanc