Siemens Aktiengesellschaft

Markus Jakobi

Michael Menhart

Mark Freudenberg

Josef Maidl

Thomas Hoppe

Hermann Sailer

The production effort for electrical machines with pole teeth which are fitted with permanent magnets is intended to be reduced. A permanent magnet is inserted between two pole teeth halves () for this purpose. The two halves () are connected to one another with an interlock by means of a plastic sheath (). The plastic sheath () results in a dimensionally stable pocket (), in which the permanent magnet can subsequently be inserted. It is therefore possible to insert the permanent magnet as late as possible during the manufacturing process, thus reducing the overall production effort.

Electrical machine having plastic-sheathed pole teeth, and a corresponding method

Electrical machines having pole teeth which can be equipped with a permanent magnet are intended to be capable of being assembled more easily. Provision is made for this purpose for two pole tooth halves () to be provided for each pole tooth, each of which two pole tooth halves has two opposing end sides. At least one end-side plate (), which connects in each case one end side of the two pole tooth halves () to one another, is used for forming a pocket () between the two pole tooth halves (), into which pocket a permanent magnet can be inserted. A space for the permanent magnet can therefore be kept free during assembly of the pole tooth or during winding thereof. Since the permanent magnet only needs to be inserted into the pocket () relatively late, the entire assembly process can be simplified.

Pole tooth with end face laminate for connection of pole tooth halves and corresponding method for production of a pole tooth

The invention relates to a secondary part () of a linear electrical machine (), wherein the secondary part () has permanent magnets () and a mount (). The secondary part () has spacer elements (), wherein an installation height of the secondary part () is also determined by means of the spacer elements (). Tolerances of the installation height can be maintained more easily by means of the spacer elements. In a method for manufacturing a secondary part () of a linear electrical machine (), the spacer elements () are cast together with the mount () on which the permanent magnets () are arranged such that the permanent magnets () are embedded in the casting compound () and the casting compound () forms the surface of the secondary part () in the region of the permanent magnets (), wherein the spacer elements () protrude out of the casting compound () such that part of the surface of the secondary part () is also formed by the spacer elements ().

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Fürstenfeldbruck, Germany

Markus Jakobi