Back iron, in particular for an electrical motor and method for producing a back iron for a rotor or stator of an electrical motor
A technology of back iron and rotor is applied in the field of manufacturing such back iron, electromagnetic back iron core, back iron of motor rotor or stator, which can solve the problems of inaccuracy and improve the use characteristics.
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[0028] figure 1 A back iron 10 is shown, ie the electromagnetic back iron core, as it is used for the stator or rotor of an electric machine. In this case, layers 12 of metal strip 40 are wound and form a cylindrical body which encloses an interior. The ends 11 of the metal strip 40 are arranged offset by 180°, so that the end sides of the back iron 10 running transversely to the back iron axial direction A are approximately planarly parallel to one another.
[0029] In order to manufacture the back iron 10, a metal strip 40 is used, such as figure 2 shown is supplied to the winding device.
[0030] Figure 4 A cross-sectional view of the metal strip 40 is shown. as from Figure 4 It can be seen that the metal strip 40 has a rectangular cross-section forming vertical and horizontal axes H, Q. FIG. The cross-section is delimited by longitudinal sides 42 and transverse sides 41 . Advantageously, a sheet metal strip, particularly preferably a slotted sheet metal sheet, wh...
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