CN213752204U - Automatic device for uniformly magnetizing permanent magnet rotor - Google Patents
Automatic device for uniformly magnetizing permanent magnet rotor Download PDFInfo
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- CN213752204U CN213752204U CN202023081136.XU CN202023081136U CN213752204U CN 213752204 U CN213752204 U CN 213752204U CN 202023081136 U CN202023081136 U CN 202023081136U CN 213752204 U CN213752204 U CN 213752204U
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Abstract
The utility model discloses an automatic device for uniformly magnetizing a permanent magnet rotor, which comprises a rotor angle automatic correction device and a magnetizing mechanism, and is characterized in that the rotor angle correction device is provided with a carrier for bearing the rotor, and the carrier fixes a rotating shaft or a bearing of the rotor through a limiting frame; one or more magnets or magnetic devices capable of generating magnetic force are arranged around the carrier, and the rotor is attracted to rotate around the axis through external magnetic force; the magnetizing mechanism comprises a clamping mechanism capable of clamping the rotor, and the central axis of the clamping mechanism coincides with the central axis of the magnetizing clamp during magnetizing. The utility model discloses the advantage is simple structure, reasonable in design, excellent in use effect magnetizes efficiently, has solved permanent magnet rotor and has need to magnetize many times calibration rotor angle and the inhomogeneous problem of magnetism, has practiced thrift a large amount of times, is convenient for realize big electric motor rotor's full automated production in batches.
Description
Technical Field
The invention relates to the technical field of production of motor rotors, in particular to an automatic device for uniformly magnetizing a permanent magnet rotor.
Background
It is known that a conventional rotor for a brushless dc small motor is usually made of permanent magnetic materials such as magnetic steel, a magnetic ring, plastic magnetic materials, etc. after the rotor is produced, a strong magnetic field is generated by a magnetizing fixture and a magnetizing device to magnetize the rotor in the radial direction, the magnetized rotor forms one or more groups of alternate N poles and S poles, and the waveform of an air gap magnetic field generated after the rotor is installed in the motor is close to a sine wave, so that the motor can stably operate. In the prior art, when the rotor is placed into a magnetizing fixture, the rotor is in a loose and free state, the placing angle alpha is random (figure 1), the position of the rotor can be corrected only by repeatedly magnetizing for at least 1 to 2 times, so that the magnetic poles of the rotor are opposite to the generation magnetic poles of the magnetizing fixture, the magnetic fluxes of the magnetic poles of the rotor can be approximately balanced after 3 rd time of magnetizing, and a great amount of time is obviously wasted. However, even if the rotor angle position is corrected by magnetizing for many times, certain deviation still exists in the magnetic flux of each magnetic pole of the rotor in the actual production process, because certain clearance exists between the outer diameter of the rotor and the inner diameter of the magnetizing fixture, the rotor generates strong magnetism after the rotor is magnetized for the 1 st time, a certain magnetic pole can be always attracted on the inner wall of the magnetizing fixture, the integral deviation of the rotor is caused, subsequent magnetizing cannot ensure the uniform magnetizing of each magnetic pole of the rotor, the performance deviation of the rotor after the rotor is manufactured into a motor is very large, the discreteness is high, the vibration and the noise of the motor can be caused, and the deviation always troubles the motor industry.
Disclosure of Invention
The utility model aims at providing an automatics for permanent magnet rotor evenly magnetizes has solved permanent magnet rotor and has needed to magnetize many times calibration rotor angle and the inhomogeneous problem of magnetizing.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: an automatic device for uniformly magnetizing a permanent magnet rotor comprises a rotor angle automatic correction device and a magnetizing mechanism, and is characterized in that a carrier for bearing the rotor is arranged on the rotor angle correction device, and the carrier fixes a rotating shaft or a bearing of the rotor through a limiting frame; one or more magnets or magnetic devices capable of generating magnetic force are arranged around the carrier, and the rotor is attracted to rotate around the axis through external magnetic force; the magnetizing mechanism comprises a clamping mechanism capable of clamping the rotor, and the central axis of the clamping mechanism coincides with the central axis of the magnetizing clamp during magnetizing.
Preferably: the distance between the magnet or the magnetic device arranged around the carrier and the maximum outer diameter of the rotor is set to be L, and L is more than or equal to 0.5mm and less than or equal to 30 mm.
Preferably: the limiting frame on the carrier is set to be rectangular, an arc-shaped limiting groove matched with the rotating shaft or the bearing is arranged in the limiting frame, and the area corresponding to the rotor on the carrier is hollow.
Preferably: the carrier below be provided with ejection mechanism down, ejection mechanism includes the cylinder of vertical setting down, the cylinder upper end is provided with the anchor clamps of lifting, the bottom of lifting the anchor clamps is provided with the permanent magnet.
The utility model has the advantages that; an automatic device for the uniform magnetization of permanent-magnet rotors, in comparison with the traditional structure: the magnetic pole of the rotor is attracted by external magnetic force, the rotor can automatically rotate to correct the angular position to be matched with the magnetic pole of the magnetizing fixture, the lower ejection mechanism is arranged below the carrier and matched with the clamping mechanism, the clamping mechanism clamps the rotor to fix the angular position, and the magnetizing position cannot deviate when the magnetizing fixture is fed. Meanwhile, the rotor clamped by the clamping mechanism and the magnetizing fixture always keep the same axis, the uniformity of magnetization is ensured, and even if the rotor is magnetized, the rotor cannot be attracted to the inner wall of the magnetizing fixture because the clamping mechanism is always in a clamping state, so that the rotor can be taken out automatically. The utility model discloses simple structure, reasonable in design, excellent in use effect magnetizes efficiently, has solved permanent magnet rotor and has needed to magnetize many times calibration rotor angle and the inhomogeneous problem of magnetism, has practiced thrift a large amount of times, is convenient for realize big electric motor rotor's full automated production in batches.
Drawings
FIG. 1 is a schematic structural view of a rotor angle calibration device of the present invention;
FIG. 2 is a schematic view of the whole magnetizing process of the automatic device;
FIG. 3 is a schematic view of the rotor of the automatic device in a magnetizing state;
in the figure: 1. magnetizing the clamp; 2. a rotor; 3. a rotor angle correction device; 4. a clamping mechanism; 5. a lower ejection mechanism; a rotor pole; 301. a rotor carrying carrier; 302. a magnet or magnetic device; 501. a cylinder; 502. lifting the clamp; 503. a permanent magnet; 6. and a magnetizing mechanism.
Detailed Description
In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;
in the drawings: an automatic device for uniformly magnetizing a permanent magnet rotor comprises a rotor angle correction device 3 and a magnetizing mechanism 6, wherein a carrier 301 for bearing the rotor is arranged on the rotor angle correction device 3, and the carrier 301 fixes a rotating shaft or a bearing of a rotor 2 through a limiting frame 303; the rotor can freely rotate around the axis on the carrier; one or more magnets or magnetic devices 302 capable of generating magnetic force are arranged around the carrier 301, and the rotor is attracted to rotate around the axis by external magnetic force; thereby automatically correcting the angle position of the rotor magnetic pole to correspond to the generating magnetic pole of the magnetizing clamp, and enabling the alpha angle to be approximately equal to 0 degree; the magnetizing mechanism 6 comprises a clamping mechanism 4 capable of clamping the rotor, and the central axis of the clamping mechanism 4 is superposed with the central axis of the magnetizing clamp 1 during magnetizing; the clamping mechanism adopts a pneumatic chuck, clamps and fixes the rotor with the correct angle, and sends the rotor into the magnetizing fixture for magnetizing.
The distance between the magnet or magnetic device 302 arranged around the carrier 301 and the maximum outer diameter of the rotor 2 is set to be L, and L is more than or equal to 0.5mm and less than or equal to 30mm, so that the stability of the magnetic attraction force is ensured. The limiting frame 303 on the carrier 301 is rectangular, an arc-shaped limiting groove 304 matched with the rotating shaft or the bearing is arranged in the limiting frame 303, and the area corresponding to the rotor 2 on the carrier 301 is hollow. A lower ejection mechanism 5 is arranged below the carrier 301, the lower ejection mechanism 5 comprises a vertically arranged cylinder 501, a lifting fixture 502 is arranged at the upper end of the cylinder 501, and a permanent magnet 503 is arranged at the bottom of the lifting fixture 502.
The rotor angle automatic correction device 3 is provided with a carrier 301 for bearing a rotor, the carrier 301 fixes a rotating shaft or a bearing of the rotor 2, and the rotor 2 can freely rotate around the axis on the carrier 301; in addition, two magnets or magnetic devices 302 capable of generating magnetic force are symmetrically arranged around the carrier 301, the magnetic force attracts the magnetic pole 201 of the rotor 2 to enable the rotor to rotate around the axis, the magnetic pole 201 and the magnet 302 of the rotor can always keep an attracting and stable state, so that the angle position of the magnetic pole of the rotor is automatically adjusted, the rotor magnetic pole 201 after the angle adjustment corresponds to the generation magnetic pole of the magnetizing clamp 1, and the whole magnetizing process can be completed only by magnetizing the rotor 2 once.
The magnetizing mechanism is mainly provided with a pneumatic chuck capable of clamping the rotor, and the clamping center of the pneumatic chuck is coaxially arranged with the magnetizing fixture 1. An ejection mechanism 5 is arranged right below the carrier 301, the air cylinder acts to eject the rotor 2 to the upper part to be coaxial with the magnetizing fixture 1, and the pneumatic chuck advances to clamp and fix the rotor 2 with the corrected magnetizing angle and sends the rotor into the magnetizing fixture 1 for magnetizing. The rotor 2 and the magnetizing fixture 1 after the pneumatic chuck is clamped keep the same axis all the time, the uniformity of magnetization is guaranteed, and even if the rotor is magnetized, the rotor cannot be attracted to the inner wall of the magnetizing fixture 1 to shift because the clamping mechanism 4 is always in a clamping state, so that the rotor 2 can be taken out automatically.
In the specific implementation, a plurality of rotors 2 are placed on a plurality of carriers 301 and circularly circulate on an assembly line, and the magnets or magnetic devices 302 arranged around the carriers 301 automatically correct the angular positions of the rotors; the ejection mechanism 5 is arranged below the assembly line, a lifting clamp 502 for lifting the rotor 2 is fixedly connected to a push rod of the cylinder 501, preferably, the lifting clamp 502 is matched with the outer diameter of the rotor 2, a permanent magnet 503 is embedded inside, when the carrier 301 flows to the position right above the ejection mechanism 5, the cylinder of the ejection mechanism 5 works, the lifting fixture 502 lifts the rotor 2 at the corrected position to the central axes of the magnetizing fixture 1 and the clamping mechanism 4, the permanent magnet 503 attracts the magnetic pole of the rotor to keep the stability of the rotor in the lifting process, the clamping mechanism 4 acts and moves forward along the axis after the rotor 2 is lifted in place, the rotating shaft of the chuck clamping rotor 2 is sent to the magnetizing fixture 1 for magnetizing, the clamping mechanism 4 clamps the rotor 2 to return to the lifting fixture 502 after the magnetizing is finished and releases the chuck to continue returning, the cylinder of the ejection mechanism 5 moves downward to drive the rotor 2 to fall onto the carrier 301 and flow into the next process, and therefore the full-automatic production of the rotor magnetizing is achieved.
The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.
Claims (4)
1. The utility model provides an automatic device for permanent magnet rotor evenly magnetizes, includes rotor angle correcting unit (3) and mechanism (6) of magnetizing, its characterized in that: a carrier (301) for bearing the rotor is arranged on the rotor angle correcting device (3), and the carrier (301) fixes a rotating shaft or a bearing of the rotor (2) through a limiting frame (303); one or more magnets or magnetic devices (302) capable of generating magnetic force are arranged around the carrier (301), and the rotor is attracted to rotate around the axis by external magnetic force; the magnetizing mechanism (6) comprises a clamping mechanism (4) capable of clamping the rotor, and the central axis of the clamping mechanism (4) coincides with the central axis of the magnetizing clamp (1) during magnetizing.
2. An automatic device for the uniform magnetization of permanent-magnet rotors, according to claim 1, characterized in that: the distance between the magnet or the magnetic device (302) arranged around the carrier (301) and the maximum outer diameter of the rotor (2) is set to be L, and L is more than or equal to 0.5mm and less than or equal to 30 mm.
3. An automatic device for the uniform magnetization of permanent-magnet rotors, according to claim 1, characterized in that: the limiting frame (303) on the carrier (301) is set to be rectangular, an arc-shaped limiting groove (304) matched with the rotating shaft or the bearing is arranged in the limiting frame (303), and the area corresponding to the rotor (2) on the carrier (301) is set to be hollow.
4. An automatic device for the uniform magnetization of permanent-magnet rotors, according to claim 1, characterized in that: carrier (301) below be provided with ejection mechanism (5) down, ejection mechanism (5) are including vertical cylinder (501) that sets up down, cylinder (501) upper end is provided with and lifts anchor clamps (502), the bottom of lifting anchor clamps (502) is provided with permanent magnet (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081136.XU CN213752204U (en) | 2020-12-21 | 2020-12-21 | Automatic device for uniformly magnetizing permanent magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081136.XU CN213752204U (en) | 2020-12-21 | 2020-12-21 | Automatic device for uniformly magnetizing permanent magnet rotor |
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| Publication Number | Publication Date |
|---|---|
| CN213752204U true CN213752204U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023081136.XU Active CN213752204U (en) | 2020-12-21 | 2020-12-21 | Automatic device for uniformly magnetizing permanent magnet rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112530660A (en) * | 2020-12-21 | 2021-03-19 | 江苏富天江电子电器有限公司 | Automatic device for uniformly magnetizing permanent magnet rotor |
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2020
- 2020-12-21 CN CN202023081136.XU patent/CN213752204U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112530660A (en) * | 2020-12-21 | 2021-03-19 | 江苏富天江电子电器有限公司 | Automatic device for uniformly magnetizing permanent magnet rotor |
| CN112530660B (en) * | 2020-12-21 | 2024-05-17 | 江苏富天江电子电器有限公司 | Automatic device for uniformly magnetizing permanent magnet rotor |
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