CN106329777A - Oblique pole motor rotor, manufacturing method and motor - Google Patents
Oblique pole motor rotor, manufacturing method and motor Download PDFInfo
- Publication number
- CN106329777A CN106329777A CN201610926492.6A CN201610926492A CN106329777A CN 106329777 A CN106329777 A CN 106329777A CN 201610926492 A CN201610926492 A CN 201610926492A CN 106329777 A CN106329777 A CN 106329777A
- Authority
- CN
- China
- Prior art keywords
- core packet
- rotor
- core
- keyway
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses an oblique pole motor rotor and a manufacturing method thereof. The oblique pole motor rotor comprises a rotor shaft and a rotor iron core. The rotor iron core comprises n iron core sections, each iron core section is internally provided with a magnet, all the iron core sections are arranged on the rotor shaft axially in a spliced and sleeving mode, the rotor shaft is provided with n first key grooves, the first key grooves axially correspond to the iron core sections one to one, all the first key grooves are sequentially staggered in the circumferential direction, a second key groove is formed in an inner hole of each iron core section, and each second key groove is connected with the corresponding first key groove through a key, wherein n is larger than or equal to 2. In the oblique pole motor rotor, the rotor iron core is formed by axially distributing the iron core sections, every two adjacent iron core sections are sequentially staggered by a certain angle, an oblique pole structure can be obtained, and the manufacturing and assembling process of the oblique pole motor rotor is simple. The invention further discloses a motor.
Description
Technical field
The present invention relates to technical field of motors, be specifically related to a kind of tiltedly pole rotor and manufacture method thereof.The present invention is also
Relate to a kind of motor.
Background technology
The applied environment of servomotor determines it has the strictest wanting to degree of accuracy, the control response speed of location
Ask.Motor cogging torque is excessive, and when motor can be caused to rotate, axle stretch end output torque is uneven, impact position control accuracy.
Therefore, one of emphasis of servomotor design is to cut down cogging torque as far as possible.
The oblique electrode structure of the many employings of traditional servomotor reduces cogging torque.Traditional implementation method mainly designs cylinder
Shape rotor core, and paste arc magnet steel in cylinder-shaped iron core outer surface segmentation.The method is to pasting the angle requirement of magnet steel relatively
High, it is necessary to use automation equipment to complete magnet steel and paste and rotor production.It addition, the method reducing cogging torque also includes using
Suit magnet ring, the mode that magnetizes of pole of retreading.But magnet ring is limited by the technique of its complexity, the dimension of inner and outer diameters of product and length
The demand of limited model motor can only be met.
Therefore, if oblique electrode structure can be realized in a straightforward manner, then servomotor can be realized with relatively low cost
Significantly improving of precision, significant.
Summary of the invention
Based on above-mentioned present situation, present invention is primarily targeted at offer a kind of tiltedly pole rotor and manufacture method thereof, its
Can realize the oblique electrode structure of rotor in a straightforward manner, manufacturing process is simple, low cost.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of tiltedly pole rotor, including armature spindle and rotor core, wherein, described rotor core includes n core packet,
Each core packet is provided with magnet, is set on described armature spindle, on described armature spindle to the split vertically of each core packet
Being provided with n the first keyway, each the first keyway one_to_one corresponding in the axial direction is in each core packet, and each first keyway is in circumference side
Misplace the most successively, the endoporus of each core packet is provided with the second keyway, between each second keyway and the first corresponding keyway
Realize connecting by key, wherein, n >=2.
Preferably, the dislocation angle between the first keyway that any two is adjacent is identical, equal to oblique polar angle/(n-1).
Preferably, each core packet has identical structure.
Preferably, described magnet is installed in described core packet in the way of embedded or Surface Mount.
Preferably, the cross section of described magnet is circular arc or rectangle.
Preferably, the core portion of each core packet is pressing product.
Preferably, the outer peripheral face of each core packet is a face of cylinder, or is made up of the arc surface that multiple centers of circle are different.
The outer peripheral face of each core packet is made up of the arc surface that multiple centers of circle are different, the medial surface of each magnet and lateral surface
For arc surface, each arc surface of described magnet is concentric circle arc plane with the arc surface of neighbouring core packet outer peripheral face.
A kind of manufacture method according to foregoing oblique pole rotor, it includes step:
S1, manufacture described armature spindle and described core packet respectively, wherein said core packet is provided with magnet；
S2, on described armature spindle corresponding to first core packet the first keyway in put into the first key, arbitrarily take one
Core packet set is set on described armature spindle, makes the second keyway of described core packet coordinate with described first key；
S3, in the adjacent next one the first keyway, put into the second key, arbitrarily take a core packet set and be set to described rotor
On axle, the second keyway of described core packet is made to coordinate with described second key, by that analogy, until completing last core packet
Sheathed.
Preferably, in step S1, manufacture the process of described armature spindle and include step:
External diameter and the length processing of each section of axle journal of described armature spindle are put in place；
Each the first keyway is processed according to predetermined dislocation angle and axial location.
Preferably, in step S1, manufacture the process of described core packet and include step:
The core portion of core packet described in punching, time processing go out the profile of described core portion, described second keyway with
And for installing the structure of magnet；
Magnet is installed to described core portion.
Preferably, when installing magnet, first described magnet is installed under non-magnetic state to described core portion, it
After carry out operation of magnetizing again.
Preferably, when sheathed core packet on armature spindle, between adjacent core packet and/or core packet and armature spindle
Between be provided with adhesive.
Another object of the present invention is to provide a kind of motor, it can have relatively low cost to realize the reduction of cogging torque.
For realizing this purpose, the technical scheme of employing is as follows:
A kind of motor, it includes stator and the rotor coordinated with described stator, it is characterised in that described rotor is above institute
The oblique pole rotor stated.
In the oblique pole rotor of the present invention, rotor core uses the core packet that multiple core packets are axially disposed, adjacent
Between misplace successively certain angle, oblique electrode structure can be obtained, it manufactures and assembling process is simple；The structure system of each core packet
One, flushing technology is simple, and single-row mould can produce；The most only requirement can be met by the simple match between keyway during assembling,
It is completely absent wrongly installed risk.
The motor of the present invention can significantly decrease cogging torque, makes motor positioning precision and response speed significantly be carried
Rise.
Accompanying drawing explanation
Hereinafter with reference to accompanying drawing, the oblique pole rotor according to the present invention and motor are described.In figure:
Fig. 1 is the end view schematic of the core packet of a kind of preferred implementation of the present invention；
Fig. 2 is the core portion decomposing schematic representation with magnet of the core packet of Fig. 1；
Fig. 3 is the schematic front view of the armature spindle of a kind of preferred implementation of the present invention；
Fig. 4 is the A-A sectional view in Fig. 3；
Fig. 5 is the schematic perspective view of the armature spindle of Fig. 3；
Fig. 6 is the schematic diagram installing first core packet；
Fig. 7 has been the schematic diagram of the rotor installed.
Detailed description of the invention
See Fig. 1-7, that schematically illustrate the oblique pole rotor of the preferred embodiment of the present invention.
As it is shown in fig. 7, the oblique pole rotor of the present invention includes armature spindle 1 and rotor core, wherein, described rotor core
Including n core packet 2, each core packet 2 is provided with magnet 3 (seeing Fig. 1 and Fig. 2), each core packet 2 split vertically ground
Being set on described armature spindle 1, described armature spindle 1 is provided with n the first keyway 11 (seeing Fig. 3-5), each first keyway 11
One_to_one corresponding is in each core packet 2 in the axial direction, and each first keyway 11 misplaces the most successively, each core packet 2
Endoporus in be provided with second keyway 21, realized even by key 4 between each second keyway 21 and the first corresponding keyway 11
Connect, wherein, n >=2, referred to as segments.
That is, the present invention is by using segmentation to arrange rotor core, the most adjacent two intersegmental misplace one in the same direction
Fixed angle so that the magnet in each core packet forms oblique electrode structure.Especially, owing to the present invention only relying on armature spindle 1
On the layout of the first keyway 11 realize the dislocation of core packet 2, each core packet then need not do any differentiation, it is only necessary to
Appoint and take a core packet, and complete to be connected with key by keyway unique on it simply, predetermined dislocation angle can be ensured, because of
Regardless of whether be the course of processing or assembling process, the most significantly it is simplified.
Preferably, the dislocation angle between the first keyway 11 that any two is adjacent is identical, equal to oblique polar angle/(n-1).This
The course of processing of keyway can be simplified, add man-hour for example with milling mode, turn over identical angle every time.Such as Fig. 4 institute
Showing, oblique polar angle, equal to the deviation angle between the centrage of the first of two ends and end the first keyway, misplaces angle then
Refer to the deviation angle between the centrage of adjacent two the first keyway.Owing to these first keyways 11 are arranged on armature spindle 1
Same shaft part outer surface on, therefore, when axially seeing of armature spindle 1, the centrage of these the first keyways 11 all with rotor
The centrage of axle 1 intersects, and in the diagram, shows as the centrage of these the first keyways 11 all in the cross section of armature spindle 1
The heart.
It should be noted that for avoiding impact to observe keyway profile profile, the sectional view of Fig. 4 does not draw section
Line.In Fig. 4, the section profile of three the first keyways draws with solid line, chain-dotted line and dotted line respectively.
After determining required oblique polar angle, just can design the dislocation angle of segments n and the first keyway.Location
Keyway quantity is identical with segments, and oblique polar angle is ensured by the deviation angle of the two of two ends the first key slot center lines.
Preferably, each core packet 2 has identical structure.This can simplify the manufacture of core packet especially
Journey, such as, when the mode using punching manufactures core portion, it is possible to use only one set of die can complete, flushing technology letter
Single, also simplify mould structure simultaneously, can improve die life.Meanwhile, identical structure is used when each core packet 2
Time, it is clear that it is the most identical that it axially folds height, and each magnet the most all has identical specification, and each key the most all has identical specification, from
And significantly simplify manufacture and assembling process.
Preferably, described magnet 3 is installed in described core packet 2 in the way of embedded or Surface Mount.Excellent shown in accompanying drawing
Selecting embodiment is inline mode, is correspondingly provided with magnet slot in core packet 2.When magnet is embedded in magnet slot, can adopt
With gluing is bonding etc., magnet is fixed by mode.The axial height of the highly preferred and single core packet of magnet is identical, it is ensured that magnet two
End face is concordant with the both ends of the surface of core packet.
Preferably, the cross section of described magnet 3 is circular arc or rectangle.
Preferably, the core portion of each core packet 2 is pressing product.Such as, height can be used to rush each iron core of mode punching
The core portion of section 2.Folded high n/mono-of folded a height of whole rotor core of each core packet 2.
Preferably, the outer peripheral face of each core packet 2 can be a face of cylinder, or can be by the different circle in multiple centers of circle
Cambered surface is constituted, as shown in Figure 1.
Preferably, the outer peripheral face of each core packet 2 is made up of the arc surface that multiple centers of circle are different, the inner side of each magnet 3
Face and lateral surface are also arc surface, and the inside and outside side of described magnet 3 is concentric with the arc surface of neighbouring core packet 2 outer peripheral face
Arc surface, as shown in Figure 1.When adopting this kind of construction, the spacing between magnet and rotor core outer peripheral face can be made as far as possible
Little, such as can be decreased to below 0.5mm, farthest to reduce leakage field.Certainly, for reducing leakage field, it is also possible at core packet
Middle increase prevents the auxiliary tank structure etc. of leakage field.
Preferably, between described armature spindle 1 and each core packet 2 both can be matched in clearance, it is also possible to for interference fit.
At the same time it can also be coat adhesive etc. between core packet 2 and armature spindle 1, to ensure bonding strength.
Further, present invention also offers the manufacture method of foregoing oblique pole rotor, it includes step:
S1, manufacture described armature spindle 1 and described core packet 2 respectively, wherein said core packet 2 is provided with magnet 3；
S2, on described armature spindle 1 corresponding to first core packet 2 the first keyway 11 in put into key 4, arbitrarily take one
Core packet 2 set is set on described armature spindle 1, makes the second keyway 21 of described core packet 2 coordinate with described key 4, this process such as Fig. 6
Shown in；
S3, in the adjacent next one the first keyway 11, put into key 4, arbitrarily take core packet 2 set and be set to described rotor
On axle 1, the second keyway 21 of described core packet 2 is made to coordinate with described key 4, by that analogy, until completing last core packet 2
Sheathed.
So far, just completing manufacture and the assembling of oblique pole rotor, very fast facilitate, assembly technology is simple, it is not necessary to
Frock can complete.
Preferably, in step S1, manufacture the process of described armature spindle 1 and can include step:
External diameter and the length processing of each section of axle journal of described armature spindle 1 are put in place；
Each the first keyway 11 is processed, for example with the mode of milling according to predetermined dislocation angle and axial location
Process.
Preferably, in step S1, manufacture the process of described core packet 2 and can include step:
The core portion of core packet 2 described in punching, time processing goes out the profile of described core portion, described second keyway 21
And for installing the structure of magnet, such as magnet slot etc.；
Magnet 3 is installed to described core portion.
Owing to each core packet uses identical structure, its cross section is the most identical on whole axial length, during production
Without changing mould, mould structure is greatly simplified.And it is possible to use the mould of single structure, it is not necessary to control video disc respectively high
Degree, makes production process simple.
Preferably, when installing magnet 3, can first described magnet 3 be installed under non-magnetic state to described iron core
Part, carries out operation of magnetizing the most again.When installing magnet under non-magnetic state, operating process is easy, and without damaging magnet
Risk.After installing magnet, each core packet can carry out identical operation of magnetizing respectively.The oblique pole rotor of the present invention
Magnetize without carrying out oblique pole, the most there is not the risk of demagnetization.
Preferably, when sheathed core packet 2 on armature spindle 1, between adjacent core packet 2 and/or core packet 2 with turn
It is provided with adhesive between sub-axle 1.The mode using gluing, keyway to match between core packet with armature spindle is connected, adjacent ferrum
Also gluing between core section, can ensure the bonding strength of rotor in the case of not using any additional structure.
Another aspect of the present invention additionally provides a kind of motor, and it can have relatively low cost to realize the reduction of cogging torque.
For realizing this purpose, the technical scheme of employing is as follows:
A kind of motor, preferably servomotor, it includes stator and the rotor coordinated with described stator, wherein, described turn
Son is foregoing oblique pole rotor.
The servomotor of the present invention can significantly decrease cogging torque, makes motor positioning precision and response speed obtain greatly
Width promotes.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each preferred version can be free
Ground combination, superposition.
Should be appreciated that above-mentioned embodiment is only illustrative, and not restrictive, basic without departing from the present invention
In the case of principle, those skilled in the art can for above-mentioned details make various significantly or the amendment of equivalent or replace
Change, be all included in scope of the presently claimed invention.
Claims (14)
1. an oblique pole rotor, including armature spindle and rotor core, it is characterised in that described rotor core includes n ferrum
Core section, is provided with magnet in each core packet, is set on described armature spindle to the split vertically of each core packet, described rotor
Axle is provided with n the first keyway, and each the first keyway one_to_one corresponding in the axial direction is in each core packet, and each first keyway is being justified
Misplace successively in circumferential direction, the endoporus of each core packet is provided with the second keyway, each second keyway and the first corresponding keyway
Between by key realize connect, wherein, n >=2.
Oblique pole the most according to claim 1 rotor, it is characterised in that between the first keyway that any two is adjacent
Dislocation angle is identical, equal to oblique polar angle/(n-1).
Oblique pole the most according to claim 1 rotor, it is characterised in that each core packet has identical knot
Structure.
Oblique pole the most according to claim 1 rotor, it is characterised in that described magnet is pacified in the way of embedded or Surface Mount
It is loaded in described core packet.
Oblique pole the most according to claim 1 rotor, it is characterised in that the cross section of described magnet is circular arc or square
Shape.
6. according to the oblique pole rotor one of claim 1-5 Suo Shu, it is characterised in that the core portion of each core packet is
Pressing product.
7. according to the oblique pole rotor one of claim 1-5 Suo Shu, it is characterised in that the outer peripheral face of each core packet is one
The individual face of cylinder, or be made up of the arc surface that multiple centers of circle are different.
8. according to the oblique pole rotor one of claim 1-5 Suo Shu, it is characterised in that the outer peripheral face of each core packet is by many
The different arc surface in the individual center of circle is constituted, and the medial surface of each magnet and lateral surface are arc surface, each arc surface of described magnet with
The arc surface of neighbouring core packet outer peripheral face is concentric circle arc plane.
9. the manufacture method according to the oblique pole rotor one of claim 1-8 Suo Shu, it is characterised in that include step
Rapid:
S1, manufacture described armature spindle and described core packet respectively, wherein said core packet is provided with magnet；
S2, on described armature spindle corresponding to first core packet the first keyway in put into the first key, arbitrarily take an iron core
Section set is set on described armature spindle, makes the second keyway of described core packet coordinate with described first key；
S3, in the adjacent next one the first keyway, put into the second key, arbitrarily take a core packet set and be set on described armature spindle,
The second keyway making described core packet coordinates with described second key, by that analogy, until completing the sheathed of last core packet.
Manufacture method the most according to claim 9, it is characterised in that in step S1, manufactures the process bag of described armature spindle
Include step:
External diameter and the length processing of each section of axle journal of described armature spindle are put in place；
Each the first keyway is processed according to predetermined dislocation angle and axial location.
11. manufacture methods according to claim 9, it is characterised in that in step S1, manufacture the process bag of described core packet
Include step:
The core portion of core packet described in punching, time processing goes out the profile of described core portion, described second keyway and use
In the structure installing magnet；
Magnet is installed to described core portion.
12. manufacture methods according to claim 11, it is characterised in that when installing magnet, first by described magnet in nothing
Install to described core portion under the state of magnetic, carry out operation of magnetizing the most again.
13. according to the manufacture method one of claim 9-12 Suo Shu, it is characterised in that at core packet sheathed on armature spindle
Time, it is provided with adhesive between adjacent core packet and/or between core packet and armature spindle.
14. 1 kinds of motors, it includes stator and the rotor coordinated with described stator, it is characterised in that weigh according to described rotor
Profit requires the oblique pole rotor that one of 1-8 is described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926492.6A CN106329777A (en) | 2016-10-24 | 2016-10-24 | Oblique pole motor rotor, manufacturing method and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926492.6A CN106329777A (en) | 2016-10-24 | 2016-10-24 | Oblique pole motor rotor, manufacturing method and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106329777A true CN106329777A (en) | 2017-01-11 |
Family
ID=57819291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610926492.6A Pending CN106329777A (en) | 2016-10-24 | 2016-10-24 | Oblique pole motor rotor, manufacturing method and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106329777A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672282A (en) * | 2019-02-25 | 2019-04-23 | 神驰机电股份有限公司 | A kind of permanent magnet machine rotor component |
| CN110011494A (en) * | 2019-05-10 | 2019-07-12 | 横店集团英洛华电气有限公司 | Rotor core rotates closed assembly device |
| CN112821617A (en) * | 2021-03-02 | 2021-05-18 | 奇瑞安川电驱动系统有限公司 | New energy automobile motor rotor iron core structure |
| CN113765312A (en) * | 2021-09-28 | 2021-12-07 | 安徽威灵汽车部件有限公司 | Rotor press-fitting method, rotor, electric power steering motor and vehicle |
| US11843285B2 (en) | 2020-05-08 | 2023-12-12 | Baker Hughes Oilfield Operations Llc | Systems and methods for constructing efficient permanent magnet motors |
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| CN202068291U (en) * | 2010-12-30 | 2011-12-07 | 上海大郡动力控制技术有限公司 | Skewed pole rotor used for synchronous motor |
| US20140117791A1 (en) * | 2012-11-01 | 2014-05-01 | General Electric Company | D-ring implementation in skewed rotor assembly |
| CN206099566U (en) * | 2016-10-24 | 2017-04-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Oblique utmost point electric motor rotor and have its motor |
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| CN1729604A (en) * | 2003-01-15 | 2006-02-01 | 三菱电机株式会社 | Permanent magnet type motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672282A (en) * | 2019-02-25 | 2019-04-23 | 神驰机电股份有限公司 | A kind of permanent magnet machine rotor component |
| CN110011494A (en) * | 2019-05-10 | 2019-07-12 | 横店集团英洛华电气有限公司 | Rotor core rotates closed assembly device |
| CN110011494B (en) * | 2019-05-10 | 2024-04-05 | 浙江联宜电机有限公司 | Rotor core rotating and stacking device |
| US11843285B2 (en) | 2020-05-08 | 2023-12-12 | Baker Hughes Oilfield Operations Llc | Systems and methods for constructing efficient permanent magnet motors |
| CN112821617A (en) * | 2021-03-02 | 2021-05-18 | 奇瑞安川电驱动系统有限公司 | New energy automobile motor rotor iron core structure |
| CN113765312A (en) * | 2021-09-28 | 2021-12-07 | 安徽威灵汽车部件有限公司 | Rotor press-fitting method, rotor, electric power steering motor and vehicle |
| CN113765312B (en) * | 2021-09-28 | 2022-08-02 | 安徽威灵汽车部件有限公司 | Rotor press-fitting method, rotor, electric power steering motor and vehicle |
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Application publication date: 20170111 |