CN103730969A - Spliced block type tangential magnetizing brushless motor rotor structure with built-in magnetic steel and method - Google Patents
Spliced block type tangential magnetizing brushless motor rotor structure with built-in magnetic steel and method Download PDFInfo
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- CN103730969A CN103730969A CN201310705654.XA CN201310705654A CN103730969A CN 103730969 A CN103730969 A CN 103730969A CN 201310705654 A CN201310705654 A CN 201310705654A CN 103730969 A CN103730969 A CN 103730969A
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Abstract
The invention provides a spliced block type tangential magnetizing brushless motor rotor structure with built-in magnetic steel. The spliced block type tangential magnetizing brushless motor rotor structure with the built-in magnetic steel comprises rotor sheet assemblies, a supporting frame 2, the magnetic steel 3, rivets 4, partition plates 5 and a rotating shaft 6. The rotor sheet assemblies are mutually independent, and the magnetic steel 3 conducts tangential magnetizing inside the brushless motor rotor structure. The rotor sheet assemblies are mainly formed by interspersing and stacking a plurality of rotor sheets 1 through the rivets 4, the rotor sheets 1 are arranged on the supporting frame 2 in a spliced mode under the effect of the rivets 4, and flanges are arranged on the rotor sheets 1. The partition plates 5 are arranged on the two sides of the magnetic steel 3 respectively, and the rotating shaft 6 is arranged in a center hole of the supporting frame 2. The invention further provides a corresponding assembly method and a corresponding motor. Rotor leakage can be effectively reduced, the performance of the motor is improved, and the parts are firmly matched, so that the magnetic steel cannot be thrown away; the magnetic steel is not over against air gaps, demagnetization resistance is effectively improved, a traditional narrow side magnetism separation bridge is omitted, and manufacturability of the motor is obviously improved.
Description
Technical field
The present invention relates to motor rotor construction, relate in particular to a kind of motor rotor construction of brushless, permanently Interior permanent magnet cutting orientation magnetizing.
Background technology
The structure that traditional rotor structure of brushless motor adopts Surface Mount magnet steel or built-in radial to magnetize, in actual applications, under limited motor volume, increase the rated output power of motor, the radial structure that magnetizes is subject to volume restrictions enough magnetic fluxs can not be provided, and cutting orientation magnetizing can be realized two magnet steel parallel connections magnetic flux is provided, obviously improved air-gap flux, motor rated output power is increased, but cutting orientation magnetizing is narrower every magnetic bridge size, be difficult for processing, production cost is more expensive, and the existence every magnetic bridge can cause leakage field phenomenon, motor performance is reduced.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of realistic production and processing and can effectively reduce motor flux leakage, improve the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of a kind of assembled piece type of motor performance.
The rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type provided by the invention, because bracing frame adopts non-magnet material, and rotor assembly is separate, can effectively reduce rotor leakage, improves motor performance.Between rotor punching and bracing frame, adopt dovetail groove to coordinate in addition, coordinate firmly, rotor punching is provided with rib, makes rotor in the situation of running up, and magnet steel also can not throw away, and magnet steel, not just to air gap, has effectively improved anti-demagnetization capability.The present invention has removed traditional narrow limit every magnetic bridge, has obviously improved the manufacturability of motor.
Particularly, according to the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type provided by the invention, comprising: rotor punching assembly, bracing frame 2, magnet steel 3, rivet 4, dividing plate 5 and rotating shaft 6;
Rotor punching assembly is mainly interted and is overrided to form by rivet 4 by multiple rotor punchings 1, rotor punching 1 is arranged on bracing frame 2 in the mode of splicing under the effect of the rivet 4 matching with the location hole of dividing plate 5 by the location hole of dividing plate 5, on rotor punching 1, is provided with rib;
On the both sides of magnet steel 3, be respectively arranged with dividing plate 5, dividing plate 5 adopts non-magnet material to make, and rotor punching assembly is connected location with dividing plate 5 between the dividing plate 5 on magnet steel 3 both sides and by rivet 4; Rotating shaft 6 is arranged in the centre bore of bracing frame 2.
Preferably, bracing frame 2 comprises dovetail groove, and rotor punching 1 comprises the location structure matching with dovetail groove.
Preferably, each pole field of described rotor structure of brushless motor is provided by two magnet steel 3 parallel connections.
Preferably, rotor punching assembly even circumferential is assembled in the multiple magnetic shoe grooves that form circumference uniform distribution on bracing frame 2, and the mode that each magnet steel 3 replaces according to the N utmost point, S utmost point position is inserted in corresponding magnetic shoe groove successively.
Preferably, magnet steel 3 is shaped as cuboid.
According to the assembly method of the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of above-mentioned assembled piece type provided by the invention, comprise the steps:
Step 1: first rotor punching 1 is laminated into multiple rotor punching assemblies by rivet 4;
Step 2: rotor punching assembly circumference uniform distribution is pressed into the dovetail groove of bracing frame 2, rotor punching assembly is arranged on bracing frame 2, rotor punching assembly even circumferential is assembled in the multiple magnetic shoe grooves that form circumference uniform distribution on bracing frame 2;
Step 3: the one side in the both sides of rotor punching assembly is pressed into dividing plate 5 to bracing frame 2;
Step 4: the mode that each magnet steel 3 is replaced according to the N utmost point, S utmost point position is inserted in the magnetic shoe groove forming after the combination of rotor punching assembly successively, and magnet steel 3 is carried out to surface coating;
Step 5: the another side in the both sides of rotor punching assembly is pressed into dividing plate 5 to bracing frame 2;
Step 6: the dividing plate 5 that makes rivet 4 intert into rotor punching assembly and rotor punching assembly both sides, rivet 4 end faces of riveting tightly, make rotor punching 1, bracing frame 2, magnet steel 3 and dividing plate 5 install and be positioned at together under rivet 4 effects;
Step 7: the centre bore that rotating shaft 6 is pressed into bracing frame 2;
Step 8: carry out duplicate removal dynamic balance calibration on dividing plate 5, finally obtain a motor rotor component.
According to brshless DC motor provided by the invention, described brshless DC motor comprises the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of above-mentioned assembled piece type.
Compared with prior art, the present invention has following beneficial effect:
(1) rotor punching is provided with the location structure matching with dovetail groove, rotor punching is provided with the location hole combining with rivet, bracing frame and dividing plate adopt non-magnet material, this structure makes between each rotor punching assembly separate, removed every magnetic bridge structure, effectively reduce motor flux leakage, improved magnet steel utilance, improved motor performance.
(2) rotor punching is provided with rib, and two end caps of rotor are provided with two non-magnetic dividing plates, have effectively improved the constant intensity of magnet steel, applicable to the motor of High Rotation Speed.
(3) processing technology of each parts is simple, and assembling process is simple, and the end cap at two ends can be proofreaied and correct for balance duplicate removal in addition, realization batch production that can less expensive.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the AA of Fig. 1 is to cross-sectional view;
Fig. 3 is explosive view of the present invention.
In figure:
1 is rotor punching;
2 is non-magnet material bracing frame;
3 is magnet steel;
4 is rivet;
5 is dividing plate;
6 is rotating shaft.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Electric machine structure of the present invention, because each pole field of rotor is provided by two magnet steel parallel connections, can obtain very high air-gap field intensity, under fixing motor volume, can reach higher power of motor; Magnet steel is fixed by rotor rib, and mechanical strength is high, can adapt to pot motor; Adopt novel assembling mode can avoid, every the narrow shortcoming that causes the bad realization of Sheet Metal Forming Technology of magnetic bridge, being convenient to realize large batch of low cost fabrication.
Particularly, as shown in Figure 1 and Figure 2, the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type of the present invention, comprises rotor punching 1, bracing frame 2, magnet steel 3, rivet 4, dividing plate 5 and rotating shaft 6.Wherein, rotor punching 1 is silicon steel sheet, and bracing frame 2 and dividing plate 5 adopt non-magnet material (such as aluminium alloy, stainless steel, engineering plastics etc.) to make, and magnet steel 3 adopts NdFeB material to make, rivet 4 adopts mild steel permeability magnetic material to make, and rotating shaft 6 adopts mild steel material to make.
In preference, bracing frame 2 is provided with dovetail groove location structure, and as shown in Figure 2, dovetail groove quantity and motor pole number are equal, and corresponding rotor punching 1 is also provided with location structure and matches with bracing frame 2.Magnet steel 3 is built in internal rotor and cutting orientation magnetizing, magnet steel 3 be shaped as cuboid; Rotor punching 1 laminates into a rotor punching assembly under rivet 4 effects, and rotor punching assembly is separate, and magnet steel 3 is alternately distributed with rotor punching assembly even circumferential; Bracing frame 2 and dividing plate 5 adopt non-magnet material and are provided with location structure, on dividing plate 5, have location hole, rotor punching 1 is fixed on non-magnet material bracing frame 2 in the mode of splicing under the effect of rivet 4 by the location hole of non-magnet material bracing frame 2 and dividing plate 5; Magnet steel 3 can prevent from axially throwing away under the effect of two side partitions 5; On rotor punching 1, designed rib, can prevent that magnet steel 3 from flying out under the effect of high speed centrifugation power.
The assembling process of the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type provided by the invention is as follows:
Step 1: first rotor punching 1 is laminated into multiple rotor punching assemblies by rivet 4;
Step 2: rotor punching assembly circumference uniform distribution is pressed into the dovetail groove of bracing frame 2, rotor punching assembly is fixed on bracing frame 2;
Step 3: the one side in the both sides of magnet steel 3 (being the both sides of rotor punching assembly) is pressed into dividing plate 5 to bracing frame 2;
Step 4: as shown in Figure 2, the mode that each magnet steel 3 is replaced according to the N utmost point, S utmost point position is inserted in the magnetic shoe groove forming after the combination of rotor punching assembly successively, week upwards the antipode between adjacent magnet steel 3 be the N utmost point or be the S utmost point, and magnet steel 3 is carried out to surface coating;
Step 5: the another side in the both sides of magnet steel 3 (being the both sides of rotor punching assembly) is pressed into dividing plate 5 to bracing frame 2;
Step 6: the dividing plate 5 that makes rivet 4 intert into rotor punching assembly and rotor punching assembly both sides, rivet 4 end faces of riveting tightly are fixed together rotor punching 1, bracing frame 2, magnet steel 3 and dividing plate 5 under rivet 4 effects;
Step 7: the centre bore that rotating shaft 6 is pressed into bracing frame 2;
Step 8: carry out duplicate removal dynamic balance calibration on dividing plate 5, finally obtain a motor rotor component.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. a rotor structure of brushless motor for the Interior permanent magnet cutting orientation magnetizing of assembled piece type, is characterized in that, comprising: rotor punching assembly, bracing frame (2), magnet steel (3), rivet (4), dividing plate (5) and rotating shaft (6);
Bracing frame (2) adopts non-magnet material to make, and is provided with multiple rotor punching assemblies and magnet steel (3) on bracing frame (2), and rotor punching assembly and magnet steel (3) are upwards evenly alternately distributed bracing frame (2) in week; Separate between rotor punching assembly, magnet steel (3) is at the inside of described rotor structure of brushless motor cutting orientation magnetizing;
Rotor punching assembly is mainly interted and is overrided to form by rivet (4) by multiple rotor punchings (1), it is upper that rotor punching (1) is arranged on bracing frame (2) in the mode of splicing by the location hole of dividing plate (5) under the effect of the rivet (4) matching with the location hole of dividing plate (5), and rotor punching is provided with rib on (1);
On the both sides of magnet steel (3), be respectively arranged with dividing plate (5), dividing plate (5) adopts non-magnet material to make, and rotor punching assembly is positioned between the dividing plate (5) on magnet steel (3) both sides and by rivet (4) and is connected location with dividing plate (5); Rotating shaft (6) is arranged in the centre bore of bracing frame (2).
2. the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type according to claim 1, is characterized in that, bracing frame (2) comprises dovetail groove, and rotor punching (1) comprises the location structure matching with dovetail groove.
3. the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type according to claim 1, is characterized in that, each pole field of described rotor structure of brushless motor is provided by two magnet steel (3) parallel connection.
4. the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type according to claim 3, it is characterized in that, rotor punching assembly even circumferential is assembled in the upper multiple magnetic shoe grooves that form circumference uniform distribution of bracing frame (2), and the mode that each magnet steel (3) replaces according to the N utmost point, S utmost point position is inserted in corresponding magnetic shoe groove successively.
5. the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type according to claim 1, is characterized in that, magnet steel (3) be shaped as cuboid.
6. according to an assembly method for the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of the assembled piece type described in any one in claim 1 to 5, it is characterized in that, comprise the steps:
Step 1: first rotor punching (1) is laminated into multiple rotor punching assemblies by rivet (4);
Step 2: rotor punching assembly circumference uniform distribution is pressed into the dovetail groove of bracing frame (2), makes rotor punching assembly be arranged on bracing frame (2) upper, rotor punching assembly even circumferential is assembled in the upper multiple magnetic shoe grooves that form circumference uniform distribution of bracing frame (2);
Step 3: the one side in the both sides of rotor punching assembly is pressed into dividing plate (5) to bracing frame (2);
Step 4: the mode that each magnet steel (3) is replaced according to the N utmost point, S utmost point position is inserted in the magnetic shoe groove forming after the combination of rotor punching assembly successively, and magnet steel (3) is carried out to surface coating;
Step 5: the another side in the both sides of rotor punching assembly is pressed into dividing plate (5) to bracing frame (2);
Step 6: the dividing plate (5) that makes rivet (4) intert into rotor punching assembly and rotor punching assembly both sides, rivet (4) end face of riveting tightly, makes rotor punching (1), bracing frame (2), magnet steel (3) and dividing plate (5) install and be positioned at together under rivet (4) effect;
Step 7: the centre bore that rotating shaft (6) is pressed into bracing frame (2);
Step 8: carry out duplicate removal dynamic balance calibration on dividing plate (5), finally obtain a motor rotor component.
7. a brshless DC motor, is characterized in that, described brshless DC motor comprises the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of the assembled piece type described in any one in claim 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310705654.XA CN103730969B (en) | 2013-12-19 | 2013-12-19 | The assembly method of the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type |
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| CN201310705654.XA CN103730969B (en) | 2013-12-19 | 2013-12-19 | The assembly method of the rotor structure of brushless motor of the Interior permanent magnet cutting orientation magnetizing of assembled piece type |
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| CN103730969A true CN103730969A (en) | 2014-04-16 |
| CN103730969B CN103730969B (en) | 2016-04-06 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595345A (en) * | 2014-12-16 | 2015-05-06 | 中国船舶重工集团公司第七一二研究所 | Novel marine air-cooled propulsion motor |
| CN105226858A (en) * | 2015-10-26 | 2016-01-06 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor and there is its motor |
| CN105932835A (en) * | 2016-06-29 | 2016-09-07 | 无锡新大力电机有限公司 | Rotor production technique |
| CN107378460A (en) * | 2017-07-25 | 2017-11-24 | 武汉源海博创科技有限公司 | The permanent magnet mounting tool and method of electromagnetic actuator mover |
| CN108092471A (en) * | 2018-02-12 | 2018-05-29 | 江阴市海达电机冲片有限公司 | The Interior permanent magnet brushless electric motor rotor automatic assembling machine of assembled piece type |
| CN110277852A (en) * | 2019-07-25 | 2019-09-24 | 东莞市深鹏电子有限公司 | A kind of production method of rotor and rotor |
| CN112087082A (en) * | 2020-09-04 | 2020-12-15 | 东南大学 | Permanent magnet synchronous motor rotor, assembling mode and motor |
| CN112564350A (en) * | 2019-09-26 | 2021-03-26 | 广东威灵电机制造有限公司 | Motor, household appliance and manufacturing method of motor |
| WO2023274364A1 (en) * | 2021-06-30 | 2023-01-05 | 上海法雷奥汽车电器系统有限公司 | Motor rotor and motor |
| WO2023108908A1 (en) * | 2021-12-17 | 2023-06-22 | 淮安威灵电机制造有限公司 | Prefabricated rotor punching sheet, rotor assembly, electric motor and electrical device |
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| CN202042963U (en) * | 2011-05-13 | 2011-11-16 | 浙江众邦机电科技有限公司 | Motor rotor used on sewing machine |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595345B (en) * | 2014-12-16 | 2017-02-15 | 中国船舶重工集团公司第七一二研究所 | Novel marine air-cooled propulsion motor |
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| CN105226858A (en) * | 2015-10-26 | 2016-01-06 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor and there is its motor |
| CN105932835A (en) * | 2016-06-29 | 2016-09-07 | 无锡新大力电机有限公司 | Rotor production technique |
| CN107378460A (en) * | 2017-07-25 | 2017-11-24 | 武汉源海博创科技有限公司 | The permanent magnet mounting tool and method of electromagnetic actuator mover |
| CN107378460B (en) * | 2017-07-25 | 2020-01-14 | 武汉源海博创科技有限公司 | Permanent magnet installation tool and method for rotor of electromagnetic actuator |
| CN108092471B (en) * | 2018-02-12 | 2024-01-09 | 江阴市海达电机冲片有限公司 | Automatic assembly machine for block-spliced type built-in magnetic steel brushless motor rotor |
| CN108092471A (en) * | 2018-02-12 | 2018-05-29 | 江阴市海达电机冲片有限公司 | The Interior permanent magnet brushless electric motor rotor automatic assembling machine of assembled piece type |
| CN110277852A (en) * | 2019-07-25 | 2019-09-24 | 东莞市深鹏电子有限公司 | A kind of production method of rotor and rotor |
| CN112564350A (en) * | 2019-09-26 | 2021-03-26 | 广东威灵电机制造有限公司 | Motor, household appliance and manufacturing method of motor |
| CN112564350B (en) * | 2019-09-26 | 2022-04-01 | 广东威灵电机制造有限公司 | Motor, household appliance and manufacturing method of motor |
| CN112087082A (en) * | 2020-09-04 | 2020-12-15 | 东南大学 | Permanent magnet synchronous motor rotor, assembling mode and motor |
| WO2023274364A1 (en) * | 2021-06-30 | 2023-01-05 | 上海法雷奥汽车电器系统有限公司 | Motor rotor and motor |
| WO2023108908A1 (en) * | 2021-12-17 | 2023-06-22 | 淮安威灵电机制造有限公司 | Prefabricated rotor punching sheet, rotor assembly, electric motor and electrical device |
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