Open-close opening interval tangential built-in permanent magnet motor rotor core

Abstract

The invention discloses an opening-closing opening interval tangential built-in permanent magnet motor rotor core, which belongs to the technical field of permanent magnet motors, and comprises a first rotor punching sheet and a second rotor punching sheet, riveting buckle holes are uniformly formed in the surface of the first rotor punching sheet along the circumferential direction at intervals,and inner ring connecting ribs are arranged between the riveting buckle holes. Connecting rib fractures are evenly formed in the inner ring connecting rib at intervals, outer ring fractures are evenlyformed in one side of the riveting buckle hole at intervals, the second rotor punching sheet is arranged at the bottom end of the first rotor punching sheet, and the first rotor punching sheet and the second rotor punching sheet are combined, stacked and riveted to form a rotor iron core. By arranging the first rotor punching sheet and the second rotor punching sheet, different structural strength requirements are met, the applicability of the rotor iron core is improved, the working quality is ensured, and after laminating and riveting, the rotor magnetic flux leakage can be reduced, the motor performance is improved, the working cost is reduced, the working efficiency is improved, the production cost is reduced, and the use quality is improved.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet motors, and in particular relates to a permanent magnet motor rotor core with a tangentially built-in opening and closing opening. Background technique [0002] Tangential built-in permanent magnet motor, because the magnetic steel of each pole of the rotor forms a closed magnetic field loop, the reluctance is small, so the magnetic flux is large, which improves the performance of the motor, but the connection between the upper and lower parts of the rotor magnetic steel groove is relatively large. The magnetic flux leakage weakens this advantage to a certain extent. [0003] The existing technology has the following problems: the traditional rotor is composed of multi-piece rotor punched and riveted, but it will generate high reluctance when it is working, resulting in the problem of small magnetic flux, reducing the working quality of the motor, and increasing the cost of use. And ther...

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Problems solved by technology

[0003] The existing technology has the following problems: the traditional rotor is composed of multi-piece rotor punched and riveted, but it will generate high reluctance when it is working, resulting in the problem of small magnetic flux, reducing the working quality of the motor, and increasing the cost of use. And there will be magnetic flux leakage at the connection of the rotor punching plate

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