Permanent magnet synchronous motor rotor component and manufacturing method thereof

Abstract

The invention discloses a permanent magnet synchronous motor rotor component and a manufacturing method thereof. The permanent magnet synchronous motor rotor component comprises a rotating shaft, a balance ring, a magnetic steel, a carbon fiber sleeve, a rotor core and a flat key, a first U-shaped groove is formed in the outer circle surface of the rotating shaft, the flat key is arranged in the first U-shaped groove, the rotor core is arranged on the outer surface of the rotating shaft in a sleeved manner and in interference fit with the rotating shaft, the balance ring is arranged at the endof the rotating shaft in a sleeved manner and in interference fit with the rotating shaft and the rotor core, the magnetic steel is pasted on the outer surface of the rotor core, the carbon fiber sleeve is arranged on the outer surfaces of the magnetic steel and the balance ring in a sleeved manner, a first cylindrical shaft hole and a second cylindrical shaft hole are mutually communicated and formed in the rotating shaft, and the first cylindrical shaft hole is larger than the second cylindrical shaft hole. The component is simple in structure, convenient to assemble, disassemble and maintain, high in qualification rate, small in size and less in consuming material and not easy to break and generates less heat in operation.

Description

technical field [0001] The invention relates to the field of electromechanical technology, in particular to a permanent magnet synchronous motor rotor assembly and a manufacturing method thereof. Background technique [0002] The existing permanent magnet synchronous servo motor rotor assembly is composed of a rotating shaft with threaded holes, a rotor module or a combination of parts assembled with silicon steel sheets, magnetic steel and the like. The suction force of the magnetic steel is very large, and the inherent characteristics of the fragile magnetic steel easily lead to high material costs and low production efficiency in the design and manufacture of the rotor assembly; the installation and disassembly process of the rotor assembly structure in the prior art is difficult; The rotor assembly in the prior art has a large volume, and the interaction with the stator assembly during the working process causes the temperature of the rotor to rise due to the large amoun...

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Problems solved by technology

The suction force of the magnetic steel is very large, and the inherent characteristics of the fragile magnetic steel easily lead to high material costs and low production efficiency of the rotor assembly in the design and manufacture; the installation and disassembly process of the rotor assembly structure in the prior art is difficult; The rotor assembly in the prior art has a large volume, and the interaction with the stator assembly during the working process causes the temperature of the rotor to rise due to the large amount of heat generated, which affects the performance and energy consumption of the motor; the permanent magnet of the rotor assembly in the prior art is prone to eddy currents loss

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