Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-04-19
2011-04-19
Mullins, Burton (Department: 2834)
Metal working
Method of mechanical manufacture
Electrical device making
C310S216004, C310S216058, C310S216091, C310S216097
Reexamination Certificate
active
07926164
ABSTRACT:
A method for manufacturing a stator core (20) for an electric machine, in which a plurality of strip-shaped laminations (21) are first stacked to form an essentially block-shaped lamellas packet (40) that is then shaped into an annular form by means of roller bending in one of the subsequent steps so that the outer teeth are provided on the outer circumference of the lamination packets and has an axial direction (a) that corresponds to a cylinder axis (z), the annular form having axial end surfaces (46), wherein in another of the subsequent steps, the annular lamination packet (40) is plastically deformed in the axial direction (a) only on the outer teeth (70) of the axial end surfaces (46).
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Berger Thomas
Henne Martin
Pflueger Klaus
Rau Eberhard
Mullins Burton
Robert & Bosch GmbH
Striker Michael J.
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