CN108736608A - The rotor structure and its manufacturing method of Halbach motors - Google Patents
The rotor structure and its manufacturing method of Halbach motors Download PDFInfo
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- CN108736608A CN108736608A CN201810726498.8A CN201810726498A CN108736608A CN 108736608 A CN108736608 A CN 108736608A CN 201810726498 A CN201810726498 A CN 201810726498A CN 108736608 A CN108736608 A CN 108736608A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 285
- 239000010959 steel Substances 0.000 claims abstract description 285
- 230000001154 acute effect Effects 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 10
- 239000003292 glue Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Linear Motors (AREA)
Abstract
The present invention provides a kind of rotor structures of Halbach motors comprising it includes the very big magnet steel of N and the minimum magnet steel of N to have the poles N magnet steel, the poles S magnet steel and shaft, the poles N magnet steel, and the poles S magnet steel includes the very big magnet steel of S and the minimum magnet steel of S, and is specifically limited：In in the minimum magnet steel of N, its magnetic line of force is parallel with the radial section diagonal line of the minimum magnet steel of N or has acute angle, in the minimum magnet steel of S, its magnetic line of force it is parallel with the radial section diagonal line of the minimum magnet steel of S or with acute angle.The present invention also provides a kind of manufacturing methods of the rotor structure of Halbach motors.The present invention has the advantages that improve as follows：The magnet structure simple shape of magnetic group is constituted, difficulty of processing is low；Installation operation is simple and convenient, and motor production efficiency is high, improves homogeneity of product；The structure of magnetic group limits, and can eliminate accumulated error when assembled, improves motor performance；Magnetic circuit is longer inside permanent magnet sectional area bigger, permanent magnet, to improve the anti-demagnetization capability of motor.
Description
Technical field
The present invention relates to motor device technical fields, more specifically, more particularly to a kind of rotor machine of Halbach motors
Structure and its manufacturing method.
Background technology
Halbach motors are a kind of motor using Halbach array magnet structure, Halbach array magnet structure
It is the magnet structure of approximate ideal in engineering, the design object of the structure is to generate strongest magnetic field with minimal amount of magnet.
Halbach array magnet structure utilizes special magnet unit spread pattern, being capable of enhancing magnet unit one direction
On field strength.
Halbach rotor structures are applied to permanent magnetism class motor, can construct special motor-field circuit, can make
Motor removes rotor magnetic conduction yoke structure, and increases air gap flux density, optimization air gap waveform, effectively improves motor properties, subtracts
Small machine weight reduces product cost.
In the prior art, traditional Halbach rotors are made of the poles N magnet steel, the poles S magnet steel and shaft, the poles N magnet steel and
The poles S magnet steel uses plate armature, and the poles N magnet steel or the poles S magnet steel be attached in shaft, patch (poles N magnet steel, the poles S magnet steel) with turn
It is contacted for line between axis, since patch difficulty is larger, typically carries out patch operation using artificial, artificial patch operation can cause
The error accumulation of patch.Since Halbach rotor structures are complex, lead to it there are craftsmanships poor, design is dumb etc. to ask
Topic is also exactly the presence of these problems so that Halbach rotors cannot achieve the property of mass production or even small lot production
It can be also poor.
In conclusion since structure design is unreasonable and processing technology is cumbersome, lead to Halbach rotor structure items advantages
It can not be applied in actual production.
Invention content
The purpose of the present invention is to provide a kind of reasonable in design, lower Halbach motors of manufacture difficulty.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of rotor structure of Halbach motors includes the poles N magnet steel, the poles S magnet steel and shaft.In the present invention, institute
It is circular shaft structure to state shaft；The poles N magnet steel includes the very big magnet steel of N and the minimum magnet steel of N, the radial direction of the very big magnet steel of N
Section is isosceles trapezoid, and the top surface of the very big magnet steel of N is the first binding face, and the very big magnet steel of N is bonded by described first
Face pastes in the shaft, and the radial section of the minimum magnet steel of N is rectangle, in the minimum magnet steel of the N, its magnetic line of force
Parallel with the radial section diagonal line of the minimum magnet steel of the N or have acute angle, the one side of the minimum magnet steel of N is second
Binding face, the minimum magnet steel of N are pasted by second binding face in the shaft, a side of the minimum magnet steel of N
Face is connect with the edge surface of the very big magnet steel of the N, and the two sides of the very big magnet steel of N are each provided with one or more of identical quantity
The minimum magnet steel of a N is simultaneously formed with the poles N magnetic group；The poles S magnet steel includes the very big magnet steel of S and the minimum magnet steel of S, the S
The radial section of very big magnet steel is isosceles trapezoid, and the top surface of the very big magnet steel of S is third binding face, and the very big magnet steel of S is logical
It crosses the third binding face to paste in the shaft, the radial section of the minimum magnet steel of S is rectangle, minimum in the S
In magnet steel, its magnetic line of force is parallel with the radial section diagonal line of the minimum magnet steel of the S or has acute angle, the minimum magnetic of S
The one side of steel is the 4th binding face, and the minimum magnet steel of S is pasted by the 4th binding face in the shaft, the S
A side face of minimum magnet steel is connect with the edge surface of the very big magnet steel of the S, and the two sides of the very big magnet steel of S are each provided with phase
With quantity the minimum magnet steel of the one or more S and be formed with the poles S magnetic group；The poles the N magnetic group is provided with multiple, the poles S
Magnetic group is provided with multiple, the poles the N magnetic group and interspersed turn being arranged and tubular structure is formed around the shaft of the poles the S magnetic group
Sub- magnetic group.
Preferably, backwards in the very big magnet steel of the N, the minimum magnet steel of the N, the very big magnet steel of the S, the minimum magnet steel of the S
Extra play is both provided on the side of the shaft, the lateral surface of the extra play is smooth surface, the inside of the extra play
Face and the very big magnet steel of the N, the minimum magnet steel of the N, the very big magnet steel of the S, the S are minimum, and magnet steel is connect；The rotor magnetic group
Lateral surface be provided with the extra play and form round surface structure.
Preferably, the extra play is set to the very big magnet steel of the N, the minimum magnet steel of the N, the very big magnet steel of the S, described
On the minimum magnet steel of S and form integral structure.
The present invention also provides a kind of manufacturing methods of the rotor structure of Halbach motors, and this method comprises the following steps：
Step 1: preparing the very big magnet steel of N and the very big magnet steel of S that radial section is isosceles trapezoid by cutting；
Step 2: preparing the minimum magnet steel of N and the minimum magnet steel of S that radial section is rectangle by cutting；
Step 3: magnetized to the very big magnet steel of the N and be formed in the very big magnet steel of the N perpendicular to its top surface or
The magnetic line of force of person bottom surface, magnetized to the very big magnet steel of the S and be formed in the very big magnet steel of the S perpendicular to its top surface or
The magnetic line of force of person bottom surface, being magnetized to the minimum magnet steel of the N and being formed in the minimum magnet steel of the N is parallel to its radial cut
Face diagonal or with its radial section diagonal line have acute angle the magnetic line of force, magnetized to the minimum magnet steel of the S and
It is formed in the minimum magnet steel of S and is parallel to its radial section diagonal line or there is acute angle with its radial section diagonal line
The magnetic line of force；
Step 4: by the minimum magnet steel of the N set up separately on the two sides face of the very big magnet steel of the N and with the very big magnetic of the N
The edge surface seamless paste of steel merges to form the poles a N magnetic group, in the same poles the N magnetic group, the magnetic in the minimum magnet steel of the N
The line of force and the magnetic line of force structure at an acute angle in the very big magnet steel of the N, set up the minimum magnet steel of the S separately the S very big magnet steel
Merge to form the poles a S magnetic group on the face of two sides and with the edge surface seamless paste of the very big magnet steel of the S, in the same poles S
The magnetic line of force in magnetic group, in the minimum magnet steel of S and the magnetic line of force structure at an acute angle in the very big magnet steel of the S；
Step 5: shaft is set and the poles the N magnetic group and the poles the S magnetic group are set in the lateral surface of the shaft,
In, the poles the N magnetic group and the interspersed setting of the poles the S magnetic group.
Preferably, the present invention also provides there is a rotor magnetic group assembly tool, there is the magnetic group assembly tool cross section to be etc.
The trapezoidal limiting slot of waist.
Preferably, the rotor magnetic group assembly tool includes pedestal, in being provided with the limiting slot on the pedestal, in
The upside of the pedestal is provided with upper cover by clamp stud；
The width of the pedestal and the width of the upper cover and the very big magnet steel of the N or the width of the very big magnet steel of the S
It is identical.
By said structure design, the present invention has the advantages that improve as follows：Constitute the permanent magnetism of N pole magnetic groups and the poles S magnetic group
Body planform is simple, and difficulty of processing is low；The permanent magnet of composition N pole magnetic groups and the poles S magnetic group is in assembling, installation operation
It is simple and convenient, and by the preassembled poles N magnetic group and the poles S magnetic group, permanent magnet installation accuracy is improved, improve Halbach motors
Production efficiency is high, improves homogeneity of product, to the mass production of reality Halbach motors；The poles N magnetic group and the poles S magnetic group
Structural failure it is small, therefore, in shaft over-assemble it is generated circumferential direction accumulated error it is also smaller.The magnetic group either poles S in the poles N
In magnetic group, bottom surface (for being connected with the rotating shaft face) is made of three angled planes, the angle position of three planes
It is consistent with shaft outer surface.In this way, structure limit is carried out to the assembling of the poles the N magnetic group either poles S magnetic group by three planes, it can
To eliminate accumulated error, significantly optimize the air gap magnetic density waveform sine of Halbach structure motor, improves motor performance.?
In the present invention, N, S magnetic group being made of Halbach structure compared with common magnetic path structure, what magnetic circuit flowed through inside permanent magnet
Apart from longer, magnetic circuit is longer inside permanent magnet sectional area bigger, permanent magnet, to improve the anti-demagnetization capability of motor.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.Wherein：
Fig. 1 is the cross section structure schematic diagram in Halbach rotors perpendicular to shaft in one embodiment of the invention；
Fig. 2 be in 1 along the sectional view of A-A；
Fig. 3 is that the present invention is based on the simplified schematic diagrams of each magnet steel internal magnetic field lines distribution in Fig. 1 structures；
Fig. 4 is the structural schematic diagram of the poles N magnetic group in one embodiment of the invention；
Fig. 5 is the structural schematic diagram of the poles S magnetic group in one embodiment of the invention；
Fig. 6 is the structural schematic diagram of rotor magnetic group assembly tool in one embodiment of the invention；
Fig. 7 is the sectional view along B-B in Fig. 6；
Reference sign：
The very big magnet steel 2 of shaft 1, N, the minimum magnet steel 3 of N, the very big magnet steel 4 of S, the minimum magnet steel 5 of S,
Pedestal 6, clamp stud 7, upper cover 8.
Specific implementation mode
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.The explanation of each example through the invention
Mode, which provides, to be not intended to limit the present invention.In fact, those skilled in the art will be clear that, the scope of the present invention or essence are not being departed from
In the case of god, it can modify in the present invention and modification.For example, being illustrated or described as the spy of the part of one embodiment
Sign can be used for another embodiment, to generate another embodiment.Thus, it may be desirable to which the present invention includes to be included into appended power
Such modifications and variations in the range of profit requirement and its equivalent.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention must be with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.The term " connected " that is used in the present invention, " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
It please refers to Fig.1 to Fig. 7, wherein Fig. 1 is section in Halbach rotors perpendicular to shaft in one embodiment of the invention
Face structural schematic diagram；Fig. 2 be in 1 along the sectional view of A-A；Fig. 3 is that the present invention is based on each magnet steel inside magnetic force in Fig. 1 structures
The simplified schematic diagram of line distribution；Fig. 4 is the structural schematic diagram of the poles N magnetic group in one embodiment of the invention；Fig. 5 is one embodiment of the invention
The structural schematic diagram of the middle poles S magnetic group；Fig. 6 is the structural schematic diagram of rotor magnetic group assembly tool in one embodiment of the invention；Fig. 7 is
Along the sectional view of B-B in Fig. 6.
Technical problem to be solved by the invention is to provide a kind of novel Halbach rotor structures and its processing methods, lead to
Its structure design is crossed, can solve the problems, such as that existing Halbach rotors can not mass production.Meanwhile the present invention can also
Largely solve poor performance of the Halbach rotor structures caused by technological problems, the problems such as consistency is poor.
Halbach rotors provided by the invention are mainly made of permanent magnet and shaft, in Halbach provided by the invention
In method for manufacturing rotor, permanent magnet forming frock and rotor forming frock are also used.
Specifically, in a kind of rotor structure of Halbach motors provided by the invention comprising have the poles N magnet steel, the poles S
Magnet steel and shaft 1, shaft 1 are circular shaft structure.
The present invention has mainly carried out structure optimization to the poles N magnet steel, the poles S magnet steel, and specific design is as follows：The poles N magnet steel includes
There are the very big magnet steel 2 of N and a minimum magnet steel 3 of N, the radial section of the very big magnet steel of N 2 is isosceles trapezoid, and the top surface of the very big magnet steel of N 2 is
First binding face, the very big magnet steel of N 2 are sticked to by the first binding face in shaft 1, the central axes of the very big magnet steel of N 2 and shaft 1
Axis is vertical, and the radial section of the minimum magnet steel of N 3 is rectangle, in the minimum magnet steel of N 3, the diameter of the minimum magnet steel of its magnetic line of force and N 3
Parallel to section diagonal line, the central axes of the minimum magnet steel of N 3 are vertical with the axis of shaft 1, and the one side of the minimum magnet steel of N 3 is second
Binding face, the minimum magnet steel of N 3 are sticked to by the second binding face in shaft 1, the very big magnet steel of a side face of the minimum magnet steel of N 3 and N 2
Edge surface connection, the two sides of the very big magnet steel of N 2 are each provided with the minimum magnet steel 3 of a N and are formed with the poles N magnetic group.
The poles S magnet steel includes the very big magnet steel 4 of S and the minimum magnet steel 5 of S, and the radial section of the very big magnet steel of S 4 is isosceles trapezoid,
The top surface of the very big magnet steel of S 4 is third binding face, and the very big magnet steel of S 4 is sticked to by third binding face in shaft 1, the very big magnet steel of S 4
Central axes it is vertical with the axis of shaft 1, the radial section of the minimum magnet steel of S 5 is rectangle, in the minimum magnet steel of S 5, its magnetic force
The radial section diagonal line of the minimum magnet steel of line and S 5 is parallel, and the central axes of the minimum magnet steel of S 5 are vertical with the axis of shaft 1, and S is minimum
The one side of magnet steel 5 is the 4th binding face, and the minimum magnet steel of S 5 is sticked to by the 4th binding face in shaft 1, the minimum magnet steel of S 5
The edge surface of the very big magnet steel of a side face and S 4 is connect, and the two sides of the very big magnet steel of S 4 are each provided with the minimum magnet steel 5 of a S and shape
At there is the poles S magnetic group.
The poles N magnetic group is provided with multiple, and the poles S magnetic group is provided with multiple, and the poles N magnetic group and the poles S magnetic group be interspersed to be arranged and around turning
Axis 1 forms the rotor magnetic group of tubular structure.In the present invention, for the defined below of magnet steel packet size：It is wanted according to motor performance
It asks, determines that the size of main magnetic circuit magnet steel in Halbach magnet steel groups (the very big magnet steel of N, S), auxiliary magnetic circuit magnet steel (the minimum magnet steel of N, S) are right
Number and size.
In the present invention, for the defined below of magnet steel group shape：It is required and size design magnet steel group according to motor performance
Shape and its each part magnet steel shape.
In the present invention, for the defined below of magnet steel group assembling：Using rotor magnetic group assembly tool, to the magnetic of same magnetic pole
Magnet steel in steel group is installed.
In the present invention, to the defined below of Halbach motor general assemblies：By magnet steel group Surface Mount, (structure is chiefly used in Surface Mount
Formula rotor) in shaft to form rotor, then carry out motor general assembly.
Inside motor, it is essentially all cylindrical space structure that coil windings, which are formed by rotor installation space, therefore,
The present invention is based on said structure designs, in the very big magnet steel 2 of N, the minimum magnet steel 3 of N, the very big magnet steel 4 of S, the minimum magnet steel 5 of S backwards to shaft 1
Side on be also provided with extra play, the lateral surface of extra play is smooth surface, medial surface and the very big magnet steel 2 of N, the N of extra play
The minimum magnet steel 5 of the very big magnet steel 4 of minimum magnet steel 3, S, S connects；The lateral surface of rotor magnetic group is provided with extra play and forms round surface
Structure.
By the structure design of designer's limited number of time, extra play is respectively provided to the very big magnet steel 2 of N, the minimum magnet steel 3 of N, S
On the minimum magnet steel of very big magnet steel 4, S 5, by the very big magnet steel 2 of N, the minimum magnet steel 3 of N, the very big magnet steel 4 of S, S, minimum magnet steel 5 is assembled successively
After the completion, the lateral surface for being formed by rotor magnetic group is round surface structure, such rotor magnetic group and motor Inside coil winding institute
Possessed the air gap spacing is consistent between the rotor installation space of formation.
In the present invention, extra play has multiple structural forms, and differ an illustration herein.
It limits herein：Extra play is set on the minimum magnet steel of the very big magnet steel 2 of N, the minimum magnet steel 3 of N, the very big magnet steel 4 of S, S 5 simultaneously
Form integral structure.
In the present invention, bonding way, the tool locating of the poles N magnetic group and the poles S magnetic group are identical, it is ensured that all magnetic poles
Group appearance and size is consistent, while facilitating installation, improves rotor permanent magnet uniformity, reduces motor gas-gap magnetic field harmonics, reduces
Complete machine torque fluctuation.
The installation process of the present invention is as follows：The very big magnet steel 2 of the minimum magnet steel 3 and a piece of N of the inverted N of two panels is glued using glue
It connects；The very big magnet steel 4 of the minimum magnet steel 5 of the inverted S of two panels and a piece of S is Nian Jie using glue, later in sequence Surface Mount in shaft 1
On outer surface.
It should be noted that：In the present invention, each parts are assembled according to above-mentioned technique, when assembling should be noted that it
Installation site reduces assembly error.
It should be noted that：In the present invention, used " big ", " small " magnet steel refers to the big of the circumferential size of permanent magnet
Small, the circumferential size of big magnet steel is more than the circumferential size of small magnet steel, and ratio is generally 60%~90% (root in a magnetic group
It is determined according to specific design)；" small " magnet steel refers to the permanent magnet for changing magnetic circuit, is occurred in pairs in " big " magnet steel both sides, according to design
It is required that the logarithm of " small " magnet steel can suitably increase, toatl proportion is generally no greater than 40% in a magnetic group.
The present invention also provides a kind of manufacturing methods for manufacturing the rotor structure of above-mentioned Halbach motors, in the system
It makes in method comprising：
Step 1: by cutting prepare the very big magnet steel 2 of N that radial section is similar isosceles trapezoid (bottom edge is circular arc) and
The very big magnet steel of S 4；
Step 2: preparing the minimum magnet steel 3 of N and the minimum magnet steel of S 5 that radial section is rectangle by cutting；
Step 3: being magnetized to the very big magnet steel of N 2 and being formed with perpendicular to its top surface or bottom surface in the very big magnet steel of N 2
The magnetic line of force, magnetized to the very big magnet steel of S 4 and be formed with the magnetic force perpendicular to its top surface or bottom surface in the very big magnet steel of S 4
Line, magnetized to the minimum magnet steel of N 3 and formed in the minimum magnet steel of N 3 be parallel to its radial section diagonal line or with its radial direction
Section diagonal line has the magnetic line of force of acute angle, is magnetized and is formed in the minimum magnet steel of S 5 parallel to the minimum magnet steel of S 5
In its radial section diagonal line or with its radial section diagonal line have acute angle the magnetic line of force；
Step 4: by the minimum magnet steel of N 3 set up separately on the two sides face of the very big magnet steel of N 2 and with the edge surface of the very big magnet steel of N 2
Seamless paste merges to form the poles a N magnetic group, the very big magnet steel of the magnetic line of force and N in the same poles the N magnetic group, in the minimum magnet steel of N 32
Interior magnetic line of force structure at an acute angle, by the minimum magnet steel of S 5 set up separately on the two sides face of the very big magnet steel of S 4 and with the very big magnet steel of S 4
Edge surface seamless paste merges to form the poles a S magnetic group, and the magnetic line of force and S in the same poles the S magnetic group, in the minimum magnet steel of S 5 are very big
Magnetic line of force structure at an acute angle in magnet steel 4；
Step 5: shaft 1 is arranged and N pole magnetic groups and the poles S magnetic group is arranged in the lateral surface of shaft 1, wherein the poles N magnetic group
And the interspersed setting of the poles S magnetic group.
In above-mentioned step three, four, small magnet steel magnetizing direction can be changed according to motor overall structure, in this hair
In a bright embodiment, a pair of small magnet steel is provided in a magnetic group, magnetizing direction is to be parallel to its cross inside small magnet steel
Diagonal cross section；In yet another embodiment of the present invention, it when being provided with two pairs or more small magnet steel in a magnetic group, needs
It to be magnetized according to motor specific size.
In step 4, invention also uses magnetic group assembly tools, wherein magnetic group assembly tool have cross section be etc.
The trapezoidal limiting slot of waist.
In step 5, invention also uses rotor magnetic group assembly tools, wherein rotor magnetic group assembly tool has limit
The cross-sectional shape in position hole, limit hole is regular polygon or circle.
Permanent magnet is cut into design shape by the present invention, and is magnetized according to fixed-direction；It, will using permanent magnet forming frock
Constitute the permanent magnet bonding forming of N pole magnetic groups and the poles S magnetic group；The poles N magnetic group and the poles S magnetic group are spliced and be installed to by rule
It in shaft 1, is fixed using rotor magnetic group assembly tool, later bonding solidification.
Please refer to Fig. 6 and Fig. 7, wherein Fig. 6 is the structural representation of rotor magnetic group assembly tool in one embodiment of the invention
Figure；Fig. 7 is the sectional view along B-B in Fig. 6.
Rotor magnetic group assembly tool provided by the invention includes pedestal 6, in being provided with limiting slot on pedestal 6, in pedestal 6
Upside upper cover 8 is provided with by clamp stud 7；The width of pedestal 6 and the width of upper cover 8 and the very big magnet steel of N or the very big magnetic of S
Steel it is of same size.
In the present invention, which is the Halbach magnet steel groups for installing above-mentioned step 4
(including the poles N group and the poles S group), the size of each Halbach magnet steel group is limited by tooling, to improve rotor magnetic steel installation
The consistency of structure.Since rotor magnetic group structure precision is improved, the air gap waveform of motor can be made smoother.The tooling by
Two parts (pedestal and upper cover) are constituted, i.e. magnet steel composing type tooling.The rotor magnetic group assembly tool is act as：It is fixed
Halbach magnet steel groups limit the relative position between magnet steel and are limited to magnet steel assembling.
Rotor magnetic group assembly tool is flat long metal, and centre has through-hole (by being sealed by upper cover in upper cover setting to pedestal
It closes limiting slot to be formed).In use, the magnet steel of same magnetic pole is installed on according to the sequence of above-mentioned steps four inside tooling through-hole, pacify
The contact surface cementing (anaerobic adhesive) of magnet steel and magnet steel before dress, and ensure that magnet steel surface must flush；After glue curing, magnetic is used
Steel group extrudes tooling and extrudes the integral Halbach magnet steel groups of internal bond, removes glue more than tooling inside, completes one
The installation of Halbach magnet steel groups.
For the present invention after carrying out above structure innovation, advantage is as follows：
1, the magnet structure simple shape of N pole magnetic groups and the poles S magnetic group is constituted, difficulty of processing is low, is suitable for big absolutely
Part durface mounted permanent magnet body, such as ferrite, alnico, rare earth material, the structure are applied widely；
2, for the permanent magnet of composition N pole magnetic groups and the poles S magnetic group in assembling, installation operation is simple and convenient, due to existing
Permanent magnet installation complexity is the important restriction factor that Halbach structure is not suitable for volume production, therefore, knot through the invention in technology
Structure designs, and is capable of the mass production of reality Halbach motors, and the production efficiency of Halbach motors is high, homogeneity of product
It is good；
3, the structural failure of the poles N magnetic group and the poles S magnetic group is small, therefore, the generated circumferential accumulation in 1 over-assemble of shaft
Error is also smaller.In the poles N magnetic the group either poles S magnetic group, bottom surface (face for being connect with shaft 1) is angled by three
Plane is constituted, in this way, structure limit is carried out to the assembling of the poles the N magnetic group either poles S magnetic group by three planes, as long as control rotor
Excircle dimension precision, you can ensure the center line of each poles N magnetic group either center line and 1 joint face of shaft of the poles S magnetic group
It overlaps, this location-independent structure hardly generates accumulated error when actual production manufactures.Also therefore, the present invention can
To eliminate accumulated error, significantly optimize the air gap magnetic density waveform of Halbach structure motor, improves motor performance；
4, compared with ordinary construction motor, Halbach motors provided by the invention can accomplish permanent magnet sectional area bigger,
Magnetic circuit is longer inside permanent magnet, to which while promoting outside motor characteristic, anti-demagnetization capability is strong.
5, the present invention weakens the influence of permanent magnet installation accuracy by preassembled Halbach magnet steel group；Meanwhile profit
With the shape of special permanent magnet, distribution, reduce permanent magnet processing and the influence for the precision that magnetizes, can ensure Halbach rotors
Under the premise of structural behaviour advantage, the processing of mass product is realized.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, those skilled in the art is come
It says, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any modification made by is equal
Replace, improve etc., it should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of rotor structure of Halbach motors includes the poles N magnet steel, the poles S magnet steel and shaft (1), which is characterized in that
The shaft is circular shaft structure；
The poles N magnet steel includes the very big magnet steel of N (2) and the minimum magnet steel of N (3), and the radial section of the very big magnet steel of N is etc.
Waist is trapezoidal, and the top surface of the very big magnet steel of N is the first binding face, and the very big magnet steel of N is pasted by first binding face
In the shaft, the radial section of the minimum magnet steel of N is rectangle, in the minimum magnet steel of the N, its magnetic line of force and the N
The radial section diagonal line of minimum magnet steel is parallel or has acute angle, and the one side of the minimum magnet steel of N is the second binding face,
The minimum magnet steel of N is pasted by second binding face in the shaft, a side face of the minimum magnet steel of N with it is described
The edge surface of the very big magnet steel of N connects, and the two sides of the very big magnet steel of N are each provided with the one or more N of identical quantity
Minimum magnet steel is simultaneously formed with the poles N magnetic group；
The poles S magnet steel includes the very big magnet steel of S (4) and the minimum magnet steel of S (5), and the radial section of the very big magnet steel of S is etc.
Waist is trapezoidal, and the top surface of the very big magnet steel of S is third binding face, and the very big magnet steel of S is pasted by the third binding face
In the shaft, the radial section of the minimum magnet steel of S is rectangle, in the minimum magnet steel of the S, its magnetic line of force and the S
The radial section diagonal line of minimum magnet steel is parallel or has acute angle, and the one side of the minimum magnet steel of S is the 4th binding face,
The minimum magnet steel of S is pasted by the 4th binding face in the shaft, a side face of the minimum magnet steel of S with it is described
The edge surface of the very big magnet steel of S connects, and the two sides of the very big magnet steel of S are each provided with the one or more S of identical quantity
Minimum magnet steel is simultaneously formed with the poles S magnetic group；
The poles the N magnetic group is provided with multiple, and the poles the S magnetic group is provided with multiple, and the poles the N magnetic group and the poles the S magnetic group are interspersed
It is arranged and surround the rotor magnetic group that the shaft forms tubular structure.
2. the rotor structure of Halbach motors according to claim 1, which is characterized in that
In the very big magnet steel of the N, the minimum magnet steel of the N, the very big magnet steel of the S, the minimum magnet steel of the S backwards to the side of the shaft
Extra play is both provided on face, the lateral surface of the extra play is smooth surface, and the medial surface of the extra play and the N are very big
The minimum magnet steel connection of magnet steel, the minimum magnet steel of the N, the very big magnet steel of the S, the S；
The lateral surface of the rotor magnetic group is provided with the extra play and forms round surface structure.
3. the rotor structure of Halbach motors according to claim 2, which is characterized in that
The extra play be set to the very big magnet steel of the N, the minimum magnet steel of the N, the very big magnet steel of the S, on the minimum magnet steel of the S
And form integral structure.
4. a kind of manufacturing method of the rotor structure of Halbach motors, which is characterized in that including：
Step 1: preparing the very big magnet steel of N and the very big magnet steel of S that radial section is isosceles trapezoid by cutting；
Step 2: preparing the minimum magnet steel of N and the minimum magnet steel of S that radial section is rectangle by cutting；
Step 3: being magnetized to the very big magnet steel of the N and being formed with perpendicular to its top surface or bottom in the very big magnet steel of the N
The magnetic line of force in face magnetizes to the very big magnet steel of the S and is formed with perpendicular to its top surface or bottom in the very big magnet steel of the S
The magnetic line of force in face, being magnetized to the minimum magnet steel of the N and being formed in the minimum magnet steel of the N is parallel to its radial section pair
Linea angulata or the magnetic line of force with its radial section diagonal line with acute angle, magnetize to the minimum magnet steel of the S and in the S
The magnetic force for being parallel to its radial section diagonal line or there is acute angle with its radial section diagonal line is formed in minimum magnet steel
Line；
Step 4: by the minimum magnet steel of the N set up separately on the two sides face of the very big magnet steel of the N and with the very big magnet steel of the N
Edge surface seamless paste merges to form the poles a N magnetic group, in the same poles the N magnetic group, the magnetic line of force in the minimum magnet steel of the N
The minimum magnet steel of the S, is set up separately the both sides of the very big magnet steel of the S by the magnetic line of force structure at an acute angle in the very big magnet steel of the N
Merge to form the poles a S magnetic group on the face of side and with the edge surface seamless paste of the very big magnet steel of the S, in the same poles the S magnetic group
The magnetic line of force in interior, the described minimum magnet steel of S and the magnetic line of force structure at an acute angle in the very big magnet steel of the S；
Step 5: shaft is arranged and the poles the N magnetic group and the poles the S magnetic group is arranged in the lateral surface of the shaft, wherein institute
State the poles N magnetic group and the interspersed setting of the poles the S magnetic group.
5. the manufacturing method of the rotor structure of Halbach motors according to claim 4, which is characterized in that
Further include having rotor magnetic group assembly tool, it is the limiting slot of isosceles trapezoid that the magnetic group assembly tool, which has cross section,.
6. the manufacturing method of the rotor structure of Halbach motors according to claim 5, which is characterized in that
The rotor magnetic group assembly tool includes pedestal (6), in being provided with the limiting slot on the pedestal, in the pedestal
Upside upper cover (8) is provided with by clamp stud (7)；
The width of the pedestal and the width of the upper cover and the very big magnet steel of the N or the very big magnet steel of the S it is of same size.
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| CN201810726498.8A CN108736608B (en) | 2018-07-04 | 2018-07-04 | Rotor structure of Halbach motor and manufacturing method thereof |
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| CN112234779A (en) * | 2020-10-13 | 2021-01-15 | 山东省科学院自动化研究所 | Motor production method and system based on variable-thickness Halbach permanent magnet array |
| CN112803637A (en) * | 2021-01-14 | 2021-05-14 | 南京理工大学 | Permanent magnet synchronous motor and magnetism gathering rotor structure thereof |
| CN113659787A (en) * | 2021-07-15 | 2021-11-16 | 西安理工大学 | Five-phase axial flux permanent magnet motor for electric automobile |
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| CN108736608B (en) | 2024-04-12 |
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