Permanent magnet brushless direct current motor rotor magnet pasting device

Abstract

The invention discloses a permanent magnet brushless direct current motor rotor magnet pasting device. The device comprises an iron core clamping and positioning mechanism, a magnetic steel preset tool, a magnetic steel pushing mechanism and a magnetic steel pressing and isolating mechanism, wherein the iron core clamping and positioning mechanism is used for clamping and fixing a to-be-assemblediron core on an iron core station of a working platform, a tool main body of the magnetic steel preset tool is arranged above the iron core station and is provided with an accommodating cavity for accommodating to-be-assembled magnetic steel, the magnetic steel pushing mechanism extrudes the magnetic steel in the accommodating cavity to the periphery of the iron core from top to bottom, the magnetic steel pressing and isolating mechanism comprises a magnetic steel pressing block arranged on the periphery of the iron core station, the magnetic steel pressing block is provided with a positioningface used for being attached to a side face of the magnetic steel, and the magnetic steel pressing block is fixedly connected with an isolating piece which protrudes out of the positioning face and is used for stretching into a gap between the adjacent magnetic steel. The permanent magnet brushless direct current motor rotor magnet pasting device can position, guide, isolate and compress the magnetic steel, and assembly precision and assembly efficiency are improved.

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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