High-precision rotor die casting

Abstract

The invention discloses a high-precision rotor die-casting, which includes an aluminum ring and rotor laminations. One side of the aluminum ring is provided with a number of limit steps, and the limit steps are tightly pressed on the end faces of the rotor laminations. An oxide protective film is provided on the surface of the rotor laminations. The invention unifies the size of the aluminum pressing rotor after improvement, thereby uniformly controlling the distance deviation between the end faces of the two oil cups of the rotor, avoiding the deviation effect caused by the deviation of the stacked thickness of the rotor, and improving the movement of the motor during assembly Consistency, thereby improving production efficiency, and can also eliminate the use of gaskets to reduce costs. At the same time, there is an oxide protective film on the surface of the rotor laminations, which prolongs the service life of the rotor laminations.

Description

technical field [0001] The invention relates to a high precision rotor die casting. Background technique [0002] A large number of asynchronous motors are used in the household appliance industry. When producing such motors, a large number of rotors need to be turned. The rotors are composed of die-casting parts and shafts. , The air gap between the rotors ensures the electromagnetic performance of the motor. [0003] For cast aluminum squirrel cage rotors, in order to simplify the structure and manufacturing process, the fan blades, the end rings and guide bars of the squirrel cage are integrated, and are formed by molten aluminum at one time during casting. The shape and angle of the cast aluminum squirrel-cage rotor fan blades use centrifugal radial straight blades, which is a traditional and mature structure. Its advantages are simple structure and shape, good castability, and is suitable for reversible motors. The fan blades are inclined at an angle relative to the d...

AI Technical Summary

Problems solved by technology

[0004] In the existing motor rotor, the deviation of the stack thickness of the rotor in the practical rotor mode leads to the deviation of the total size (the distance between the end faces of the two oil cups), resulting in poor consistency of rotor movement and low production efficiency

At the same time, when the traditional rotor is turned, because there is a certain distance between the end face of the rotor and the aluminum ring, the strength is not high. During turning, the rotor slices on the end face will have flanging, which will affect the motor performance and safety performance of the motor.

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