Permanent magnet-excited assembly of an electrical machine, and process for its manufacture

Abstract

The invention relates to a permanent magnet-excited assembly of an electrical machine, as well as to a process for producing in particular a synchronous machine with a ferromagnetic body and permanent magnets arranged therein, for application as compact solutions for drives. According to the invention, punched single-component metal sheet disks or metal sheet strips (2) of the type known per se, with slots (3) and teeth (4) toward the back accommodate a arrangement of internal slots (5). The number and position of the internal slots (5) are adapted to the slots (3) for receiving the permanent magnets (7). A narrow removable bridge (9) is first arranged between the inner slots (5) and the slots (3). The pack of sheet metal elements is subsequently laminated and then solidified with non-ferromagnetic material (6). Following curing of the solidification, the slots (3) are milled down to the non-ferromagnetic material (6). Permanent magnets (7) are inserted in preferably semi-open slots (3) and solidified. Openings (8) are arranged in the interior of the laminated teeth (4) in the lower zone toward the base of the slot. Finally, the entire permanent magnet-excited assembly as defined by the invention is set by methods known in the field of electrical machine building.

Dependencies are inferred from the claim text.