A permanent magnet brushless DC motor rotor magnetic attachment device

Abstract

The invention discloses a permanent magnet brushless DC motor rotor magnetic attachment device, which includes an iron core clamping and positioning mechanism, a magnetic steel preset tooling, a magnetic steel pushing mechanism, and a magnetic steel pressing and isolating mechanism; wherein, the iron core clamping The holding and positioning mechanism is used to clamp and fix the iron core to be assembled on the iron core station of the working platform; the main body of the magnetic steel preset tooling is set above the iron core station, and is equipped with a The steel housing chamber; the magnetic steel pushing mechanism squeezes the magnetic steel in the housing chamber to the outer periphery of the iron core from top to bottom; the magnetic steel pressing and isolation mechanism Tight block, the magnetic steel pressing block is provided with a positioning surface for bonding with the side of the magnetic steel, and the magnetic steel pressing block is fixedly connected with a spacer that protrudes from the positioning surface and is used to extend into the gap between adjacent magnetic steels piece. The permanent magnet brushless DC motor rotor magnetic sticking device provided by the present application can position, guide, isolate and compress the magnetic steel, thereby improving the assembly accuracy and assembly efficiency.

Description

technical field [0001] The invention relates to the technical field of brushless DC motor manufacturing, and more specifically relates to a permanent magnet brushless DC motor rotor magnet attachment device. Background technique [0002] Unlike traditional brushed DC motors, brushless DC motors use a design structure in which the rotor is a permanent magnet and the stator is a coil. In the manufacture of permanent magnet rotors, the method of patching is usually used to evenly paste the permanent magnetic steel sheets on the rotor core coated with anaerobic glue according to a certain rule and a certain order, and then install the annular The steel sleeve ensures that the magnetic steel sheet will not separate from the iron core when the rotor rotates at high speed. The assembly accuracy of the magnetic steel sheets is crucial to the stability of the motor rotor during high-speed rotation. The gap between the magnetic steel sheets of the rotor with poor assembly accuracy is...

AI Technical Summary

Problems solved by technology

Therefore, when the rotor is magnetically attached, it is difficult to ensure the assembly accuracy of the magnetic steel sheets due to the effect of magnetic attraction, which directly affects the assembly quality and efficiency of the rotor.

It is precisely because of the above-mentioned technical difficulties that almost all permanent magnet rotors in the industry using magnetic steel surface-mounted structures are assembled and pasted by hand. The assembly process can only be assembled one by one, the assembly accuracy and consistency are poor, and the efficiency is very low.

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