CN102843001A - Assembling structure and method of outer rotor of permanent magnet motor - Google Patents

Assembling structure and method of outer rotor of permanent magnet motor Download PDF

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Publication number
CN102843001A
CN102843001A CN2012102924310A CN201210292431A CN102843001A CN 102843001 A CN102843001 A CN 102843001A CN 2012102924310 A CN2012102924310 A CN 2012102924310A CN 201210292431 A CN201210292431 A CN 201210292431A CN 102843001 A CN102843001 A CN 102843001A
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China
Prior art keywords
external rotor
mandrel
positioning seat
rotor assembly
assembly structure
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CN2012102924310A
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CN102843001B (en
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董瑜堂
韩军
吴乾军
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Ningbo Feishi Technology Co., Ltd
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Ningbo Phase Motion Control Co Ltd
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Abstract

The invention relates to an assembling structure and method of an outer rotor of a permanent magnet motor. The assembling structure and method can solve the problems that the prior art is incapable of meeting the roundness of the outer diameter size of a mounted permanent magnet and the coaxiality of an inner hole of a rotor iron core. The assembling structure of the outer rotor of the permanent magnet motor is technically characterized by comprising a spindle and a positioning base, wherein the spindle and the positioning base are movably connected and coaxially arranged, the spindle is provided with multiple groups of fixing grooves, the distance between each fixing groove and the circle center of the spindle is equal and the space between every two adjacent fixing grooves is equal, and each fixing groove is filled with an external magnet or a coil. The assembling structure and method disclosed by the invention overcome the defects of size tolerance as well as form and location tolerance caused by uneven thickness of the permanent magnet after assembling, thereby meeting the requirements of a high-precision motor.

Description

Magneto external rotor assembly structure and method
Technical field
The present invention relates to a kind of motor assembly structure and method, particularly a kind of magneto external rotor assembly structure and method.
Background technology
Permanent magnetic torque servomotor overall structure form is multiple; Generally can be divided into two kinds: a kind of is magnetic structure radially; Another kind is the axial magnetic circuit structure, and this is with respect to the motor rotary shaft axle center, and our common structure is a magnetic structure radially; It is cylindric that motor is, and air gap also is cylindric between rotor.What axial magnetic circuit was common is disc type, and axial dimension is short, and radial dimension is big, and profile is rendered as flat pattern.Radially the manufacturing of magnetic circuit motor is simple, and price is low.Permanent magnetic torque servomotor external rotor manufacture method of the present invention is applicable to radially magnetic circuit electric motor structure.Motor with same outer diameter as, if design of electrical motor becomes external-rotor-type, it is compared with inner-rotor-type, can obtain than the air gaps diameter.Because the quadratic power of motor electromagnetic torque and air-gap diameter is proportional, thereby can reduce the length and the weight of external rotor electric machine, have higher torque density.The effective material weight of the external rotor electric machine of optimal design is about lighter by about 15% than inner rotor motor.In addition, adopt the external rotor electric machine of concentrating winding, because stator tooth outwardly, the coiling winding will be easy to many, is suitable for machinery coiling fast, particularly adopts under the situation of open slot.In the external rotor electric machine design, permanent magnet all adopts the surface-mount type structure, on the make has bigger difficulty; In order to realize that the quick acceleration and deceleration of motor need uniform air-gap field; Make the moment of inertia of rotor lower; Therefore the internal diameter of the permanent magnet of Surface Mount must guarantee mechanical dimension circularity and with the axiality that external diameter is installed, and because the influence in magnetic field, the big difficult point when the Surface Mount permanent magnet is the motor assembling always.
Chinese patent publication number CN1588756A in open day on March 2nd, 2005, discloses a kind of magnet steel of permagnetic synchronous motor and the installation method of magnet steel thereof.A kind of magnet steel of permagnetic synchronous motor, magnet steel are multi-segment structure, and every section magnet steel connects through bond site.This technical scheme still has: permanent-magnetic synchronous motor rotor embeds integrated magnet steel (rareearth magnetic material); The magnet steel manufacturing of this integral structure is not too convenient; When especially making high power permanent magnet synchronous motor, complicated frock must be used, the circularity of permanent magnet outside dimension after posting and the axiality of rotor core endoporus can not be satisfied; Can't guarantee to realize uniform air-gap field, topic makes the motor that makes that assembles rotate jiggly problem easily.
Summary of the invention
The objective of the invention is to solve prior art and can not satisfy the circularity that posts back permanent magnet outside dimension and the axiality of rotor core endoporus; Can't guarantee to realize uniform air-gap field; Make that easily the motor that makes that assembles rotates jiggly problem, have the assembly structure and the method for good concentricity and external diameter tolerance after providing a kind of rotor core and magnetic permanent magnet to assemble.
The technical solution adopted for the present invention to solve the technical problems is: a kind of magneto external rotor assembly structure; Be applicable to the magnet steel assembling of magneto external rotor; Described magneto external rotor assembly structure comprises mandrel and positioning seat; Described mandrel flexibly connects and coaxial and vertical setting with described positioning seat; Described mandrel is provided with some groups of holddown grooves, the corresponding mandrel circle centre positions distance of all holddown grooves all equate and all adjacent fixed grooves between spacing all equate, fill out in the described holddown groove to be provided with and add magnet or coil.Utilize this assembling device to load externally-applied magnetic field, overcome the assembling that brings owing to permanent magnet is in uneven thickness and finished the problem of back dimensional tolerance and form and position tolerance, thereby satisfied the needs of high-precision motor.
As preferably, described holddown groove quantity is consistent with the magnet steel quantity of the required Surface Mount of external rotor, and the corresponding center of circle angle number average of adjacent fixed groove equates arbitrarily.
As preferably, on the said mandrel respective shaft to the center outwards protrusion be provided with connecting portion, corresponding connection parts is provided with link slot on the described positioning seat, described connecting portion and described link slot are matched in clearance.The concentricity of mandrel and positioning seat when having guaranteed assembling is set like this, for the uniform air-gap field of realization, help is provided during installation.
As preferably, said magnet steel adds magnet or coil is identical towards the polarity of positioning seat circle centre position towards the polarity of positioning seat circle centre position with said.Be provided with like this, externally-applied magnetic field is offset the magnet steel intrinsic magnetic field, for the attaching of magnet steel has reduced difficulty, has overcome the problem of intact dimensional tolerance afterwards of the assembling that brings owing to permanent magnet is in uneven thickness and form and position tolerance, thereby has satisfied the needs of high-precision motor.
As preferably, the bottom land of the holddown groove on the corresponding mandrel of said positioning seat offers jogger hole, and said jogger hole is a through hole.The effect of jogger hole is after treating glue curing, utilizes push rod will add magnet through jogger hole and ejects, and positioning pedestal is taken out, and then take out external rotor.
As preferably, magnet steel attaching place of the corresponding external rotor of described positioning seat front surface is provided with storage glue groove.The setting of storage glue groove has guaranteed that external rotor after bonding, can not be fixed together with positioning seat.
As preferably, described magneto external rotor assembly structure also includes top board, and described top board is relative with described positioning seat, and described top board is connected with described mandrel screw.Make outer rotor iron core be able to fix through regulating lock-screw like this; Avoid under uneven magnetic field force effect, taking place deflection; Guaranteed the concentricity requirement of rotor core and mandrel; Overcome the assembling that brings owing to permanent magnet is in uneven thickness and finished the problem of back dimensional tolerance and form and position tolerance, thereby satisfied the needs of high-precision motor.
As preferably, described positioning seat link slot center offers connecting hole, and described mandrel is connected through screw with described positioning seat.Be provided with like this, mandrel is connected through screw with positioning seat, has guaranteed that mandrel can fixedly secure with top board and positioning seat.
A kind of magneto external rotor assembly method is applicable to magneto external rotor assembly structure, and magneto external rotor assembly method may further comprise the steps:
Step 1: mandrel and positioning seat that the non-magnetic material is processed are screwed, and are fixed on mandrel in the positioning seat, make mandrel and positioning seat keep concentricity and perpendicularity;
Step 2: evenly insert in the mandrel and add magnetic, add the magnet steel formation anti-phase magnetic field force that the relative desire of magnetic is installed;
Step 3: on outer rotor iron core, apply corresponding glue then, outer rotor iron core is imported, it is fixing that magnet steel and outer rotor iron core are bondd, and the irregular air gap between magnet steel external diameter and the outer rotor iron core internal diameter is just filled with glue;
Step 4: treat that glue just removes the anti-phase magnetic field force admittedly, takes out external rotor from mandrel then.
As preferably, in step 2, in advance on the mandrel by suitable, counterclockwise interval coiling and on direct current, in step 4: carry out the coil blackout action earlier, remove the anti-phase magnetic field force, and then take out external rotor.Small and exquisite or external force requires hour to utilize permanent magnetic material when rotor structure, and huge or external force requires to utilize solenoid when big when rotor structure, when adopting coil, adopts following mode, can guarantee that coil can withdraw from from mandrel smoothly.
Substantial effect of the present invention is: the interference in magnetic field when the present invention has adopted the mode of externally-applied magnetic field when the assembling magnet steel to solve the magnet steel assembling; Overcome the assembling that brings owing to permanent magnet is in uneven thickness and finish the problem of back dimensional tolerance and form and position tolerance, thereby satisfy the needs of high-precision motor.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of sketch map of externally-applied magnetic field and magnet steel coupling among the present invention;
Fig. 3 is the enlarged diagram at F place among Fig. 1;
Fig. 4 is an another kind of structural representation of the present invention;
Fig. 5 is the enlarged diagram at G place among the present invention.
Among the figure: 1, outer rotor iron core, 2, magnet steel, 3, add magnet, 4, mandrel, 5, positioning seat, 6, top board, 7, link slot, 8, connecting portion, 9, screw, 10, jogger hole, 11, storage glue groove, 12, glue-line.
Embodiment
Pass through specific embodiment below, and combine accompanying drawing, technical scheme of the present invention is further specified.
Embodiment 1:
A kind of magneto external rotor assembly structure (referring to accompanying drawing 4) is applicable to the magnet steel assembling of magneto external rotor, the making of suitable especially concordant type external rotor.Present embodiment is fixed for the outside fix mode; Present embodiment comprises mandrel 4 and positioning seat 5; Mandrel 4 flexibly connects and coaxial setting with positioning seat 5; Mandrel 4 is whole cylindrical; Mandrel 4 is provided with six holddown grooves, the corresponding mandrel 4 circle centre positions distance of all holddown grooves all equate and all adjacent fixed grooves between spacing equate that all i.e. all holddown grooves can be connected to form a circle concentric with mandrel 4, fill out in all identical and holddown groove of the shape of each holddown groove establish add magnet 3 shapes also all identical (referring to accompanying drawing 2).The number of degrees of the central angle of the corresponding mandrel center of circle of adjacent fixed groove formation are 60 equal degree arbitrarily.An end face respective shaft is outwards protruded to the center and is provided with connecting portion 8 on the mandrel 4, and connecting portion 8 also is cylindrical.Magnet steel 2 towards the polarity of positioning seat 5 circle centre positions with to add magnet 3 identical towards the polarity of positioning seat circle centre position.Fill out the magnet of establishing that adds simultaneously and meet the nonnegotiable demands that the external rotor upper magnetic steel attaches, promptly the adjacent magnet 3 that adds is contrary towards the polarity of positioning seat 5 circle centre positions arbitrarily.The edge protuberance of positioning seat 5 forms the external stability circle, and the inwall of external stability circle plays the fixedly effect of outer rotor iron core 1.Outer rotor iron core 1 is a matched in clearance with the external stability circle, and corresponding connection parts 8 is provided with link slot 9 on the positioning seat 5, and the shape of the shape of link slot 9 and connecting portion 8 is complementary, and connecting portion 8 is a matched in clearance with link slot 9.Offer the pair of corresponding through hole on the connecting portion 8 He on the link slot 9, connecting portion 8 passes through screw with link slot 9.When screw connects, the connection angle that can adjust mandrel and holder be connected degree, the bottom land of the holddown groove on the positioning seat 5 corresponding mandrels 4 offers jogger hole 10, jogger hole 10 is a through hole.Magnet steel 2 attachings place of the corresponding external rotor of positioning seat 5 front surfaces are provided with storage glue groove 11 (referring to accompanying drawings 5).Width of rebate is much larger than the thickness of the glue-line of plastic-bonded magneto 2 and external rotor.
Adopt the assembly method of the described magneto external rotor of present embodiment device may further comprise the steps:
Step 1: be screwed after the connecting portion of the mandrel that the non-magnetic material is processed and the link slot of the positioning seat coupling, be fixed on mandrel in the positioning seat, because the matched in clearance of connecting portion and link slot makes mandrel and positioning seat maintenance concentricity;
Step 2: evenly insert in the mandrel and add magnetic, add magnetic and insert in the holddown groove, add the magnet steel formation anti-phase magnetic field force that the relative desire of magnetic is installed;
Step 3: on outer rotor iron core, apply corresponding glue then; The selection of glue is required to confirm by the required cohesive force of product, working temperature etc.; Outer rotor iron core is imported; It is fixing that magnet steel and outer rotor iron core are bondd, and the irregular air gap between magnet steel external diameter and the outer rotor iron core internal diameter is just filled with glue;
Step 4: treat that removing anti-phase magnetic field force (utilizing pin-lift arrangement will add magnet steel ejects) after glue is just consolidated takes out external rotor from mandrel then.
Embodiment 2:
Present embodiment is applicable to the magnet steel assembling of magneto external rotor, the making of suitable especially inner concave shape external rotor.
Present embodiment is that interior locate mode is fixed; Present embodiment is basic identical with embodiment 1, also comprises mandrel 4 and positioning seat 5 (referring to accompanying drawing 1), and positioning seat 5 edges in the present embodiment are not provided with retainer plate; Mandrel both ends of the surface in the present embodiment are provided with connecting portion 8; Positioning seat 5 edges in the present embodiment whole indent in corresponding outer rotor iron core wall place, the diapire butt of said indent and outer rotor iron core, the end face of the roof of magnet steel 2 and positioning seat 5 is butt also.Magnet steel 2 attachings place of the corresponding external rotor of positioning seat 5 front surfaces are provided with storage glue groove 11 (referring to accompanying drawings 3).The cross section of the storage glue groove 11 in the present embodiment is trapezoidal, and storage glue groove 11 is close to outer rotor iron core 1 place cell wall is not set.
Magneto external rotor assembly structure also includes top board 6, and top board 6 is relative with positioning seat 5, and top board 6 is similar with positioning seat 5 shapes, and top board 6 is connected with mandrel 5 screws.A connecting portion 8 in the present embodiment is connected with the link slot 7 of positioning seat 5.Another connecting portion 8 is provided with link slot 7 on the top board 6 corresponding mandrels 5, link slot 7 matched in clearance on another connecting portion 8 and the top board 6, and through screw 9 connections.
When present embodiment uses; Huge or external force requires when big present embodiment assembly method and above-mentioned assembly method basic identical when rotor structure; Difference is that need coiling coil and energising suitable, counterclockwise interval form anti-phase magnetic field this moment on the mandrel internal tooth; After glue was just solid, the user only need cut off coil power can remove the opposing magnetic field, took out external rotor.
Above-described embodiment is a kind of preferable scheme of the present invention, is not that the present invention is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.

Claims (10)

1. magneto external rotor assembly structure; Be applicable to the magnet steel assembling of magneto external rotor; It is characterized in that: described magneto external rotor assembly structure comprises mandrel and positioning seat; Described mandrel flexibly connects and coaxial and vertical setting with described positioning seat; Described mandrel is provided with some groups of holddown grooves, the corresponding mandrel circle centre positions distance of all holddown grooves all equate and all adjacent fixed grooves between spacing all equate, fill out in the described holddown groove to be provided with and add magnet or coil.
2. magneto external rotor assembly structure according to claim 1 is characterized in that: described holddown groove quantity is consistent with the magnet steel quantity of the required Surface Mount of external rotor, and the corresponding center of circle angle number average of adjacent fixed groove equates arbitrarily.
3. magneto external rotor assembly structure according to claim 1; It is characterized in that: respective shaft is outwards protruded to the center and is provided with connecting portion on the said mandrel; Corresponding connection parts is provided with link slot on the described positioning seat, and described connecting portion and described link slot are matched in clearance.
4. magneto external rotor assembly structure according to claim 1 is characterized in that: said magnet steel adds magnet or coil is identical towards the polarity of positioning seat circle centre position towards the polarity of positioning seat circle centre position with said.
5. magneto external rotor assembly structure according to claim 1 is characterized in that: the bottom land of the holddown groove on the corresponding mandrel of said positioning seat offers jogger hole, and said jogger hole is a through hole.
6. magneto external rotor assembly structure according to claim 1 is characterized in that: magnet steel attaching place of the corresponding external rotor of described positioning seat front surface is provided with storage glue groove.
7. magneto external rotor assembly structure according to claim 1; It is characterized in that: described magneto external rotor assembly structure also includes top board; Described top board is relative with described positioning seat, and described top board is connected with described mandrel screw.
8. magneto external rotor assembly structure according to claim 3 is characterized in that: described positioning seat link slot center offers connecting hole, and described mandrel is connected through screw with described positioning seat.
9. a magneto external rotor assembly method is applicable to magneto external rotor assembly structure, it is characterized in that: magneto external rotor assembly method may further comprise the steps:
Step 1: mandrel and positioning seat that the non-magnetic material is processed are screwed, and are fixed on mandrel in the positioning seat, make mandrel and positioning seat keep concentricity and perpendicularity;
Step 2: evenly insert in the mandrel and add magnetic, add the magnet steel formation anti-phase magnetic field force that the relative desire of magnetic is installed;
Step 3: on outer rotor iron core, apply corresponding glue then, outer rotor iron core is imported, it is fixing that magnet steel and outer rotor iron core are bondd, and the irregular air gap between magnet steel external diameter and the outer rotor iron core internal diameter is just filled with glue;
Step 4: treat that glue just removes the anti-phase magnetic field force admittedly, takes out external rotor from mandrel then.
10. magneto external rotor assembly structure according to claim 9; It is characterized in that: in step 2, in advance on the mandrel by suitable, counterclockwise interval coiling and on direct current, in step 4: carry out the coil blackout action earlier; Remove the anti-phase magnetic field force, and then take out external rotor.
CN201210292431.0A 2012-08-17 2012-08-17 Assembling method of outer rotor of permanent magnet motor Active CN102843001B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105119434A (en) * 2015-09-14 2015-12-02 浙江兆丰机电股份有限公司 Permanent magnet pasting semi-automatic machine of permanent magnetic brushless external rotor wheel hub motor
CN106369052A (en) * 2016-10-24 2017-02-01 珠海格力节能环保制冷技术研究中心有限公司 Magnetic bearing
CN107425679A (en) * 2017-09-13 2017-12-01 杭州桢正玮顿运动控制技术有限公司 A kind of motor rotor magnetic steel sticker and its method of attaching
CN115694106A (en) * 2022-11-25 2023-02-03 湖南丰辉电机有限公司 Miniature permanent magnet motor rotor magnetic pole installation device and installation method thereof

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JP2005269734A (en) * 2004-03-17 2005-09-29 Yaskawa Electric Corp Rotor for ipm motor, method of manufacturing rotor for ipm motor using the same, and its ipm motor
JP2006340430A (en) * 2005-05-31 2006-12-14 Matsushita Electric Ind Co Ltd Device and method for magnetizing brushless motor
CN200994092Y (en) * 2006-12-22 2007-12-19 无锡市明通动力附件厂 Explosion-proof outer rotor axial-flow fan motor structure
CN201742248U (en) * 2010-07-15 2011-02-09 贵阳航空电机有限公司 Assembly tooling for direct-current motor stator
CN101989776A (en) * 2010-11-05 2011-03-23 中国船舶重工集团公司第七○七研究所 Limited angle brushless torque motor with self-positioning function
CN201805325U (en) * 2010-09-06 2011-04-20 成都华川电装有限责任公司 Assembly device of stator of motor
CN202749922U (en) * 2012-08-17 2013-02-20 宁波菲仕电机技术有限公司 External-rotor assembling structure for permanent magnetic motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005269734A (en) * 2004-03-17 2005-09-29 Yaskawa Electric Corp Rotor for ipm motor, method of manufacturing rotor for ipm motor using the same, and its ipm motor
JP2006340430A (en) * 2005-05-31 2006-12-14 Matsushita Electric Ind Co Ltd Device and method for magnetizing brushless motor
CN200994092Y (en) * 2006-12-22 2007-12-19 无锡市明通动力附件厂 Explosion-proof outer rotor axial-flow fan motor structure
CN201742248U (en) * 2010-07-15 2011-02-09 贵阳航空电机有限公司 Assembly tooling for direct-current motor stator
CN201805325U (en) * 2010-09-06 2011-04-20 成都华川电装有限责任公司 Assembly device of stator of motor
CN101989776A (en) * 2010-11-05 2011-03-23 中国船舶重工集团公司第七○七研究所 Limited angle brushless torque motor with self-positioning function
CN202749922U (en) * 2012-08-17 2013-02-20 宁波菲仕电机技术有限公司 External-rotor assembling structure for permanent magnetic motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105119434A (en) * 2015-09-14 2015-12-02 浙江兆丰机电股份有限公司 Permanent magnet pasting semi-automatic machine of permanent magnetic brushless external rotor wheel hub motor
CN106369052A (en) * 2016-10-24 2017-02-01 珠海格力节能环保制冷技术研究中心有限公司 Magnetic bearing
CN107425679A (en) * 2017-09-13 2017-12-01 杭州桢正玮顿运动控制技术有限公司 A kind of motor rotor magnetic steel sticker and its method of attaching
CN107425679B (en) * 2017-09-13 2024-04-23 杭州桢正玮顿运动控制技术有限公司 Motor rotor magnetic steel pasting device and pasting method thereof
CN115694106A (en) * 2022-11-25 2023-02-03 湖南丰辉电机有限公司 Miniature permanent magnet motor rotor magnetic pole installation device and installation method thereof

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Address after: 315000 No. 308, Xiaogang Anju Road, Beilun District, Ningbo City, Zhejiang Province

Patentee after: Ningbo Feishi Technology Co., Ltd

Address before: 315800 No. 55, Putuo mountain road, Beilun District, Zhejiang, Ningbo

Patentee before: Phase Motion Control Ningbo Ltd.