CN103996482A - Magnet having center identification mark, motor and method for making the same - Google Patents
Magnet having center identification mark, motor and method for making the same Download PDFInfo
- Publication number
- CN103996482A CN103996482A CN201410129517.0A CN201410129517A CN103996482A CN 103996482 A CN103996482 A CN 103996482A CN 201410129517 A CN201410129517 A CN 201410129517A CN 103996482 A CN103996482 A CN 103996482A
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- CN
- China
- Prior art keywords
- magnet
- center mark
- magnetization
- center
- mark
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- 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.)
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The magnet (1) has a center identification mark (5) which represents a center of the magnet perpendicular to a magnetization span direction (R). The magnetization span direction and the center identification mark are provided along a plane of symmetry of the magnet. The center identification mark is extended from a first edge (17) to a second edge (19). Independent claims are included for the following: (1) an electric machine; and (2) a method for manufacturing a magnet.
Description
Technical field
The present invention relates to a kind of magnet with center mark, a kind ofly have according to the motor of magnet of the present invention and a kind of method for the manufacture of magnet.
Background technology
In prior art with different designs scheme, magnet is disclosed.In motor, for example, improve according to the difference of motor size and the requirement to operation noise the number that is used magnet, to improve number of poles.But, for the peace and quiet running of motor, below these have special meaning, i.e. magnet symmetry as far as possible with regard to their direction of magnetization (magnet axis) with regard to.In the case, in the case of using the electro-motor of arc magnet, produced special problem.This class arc magnet is especially manufactured by grinding process, and wherein, magnet arrangement is between upper emery wheel and lower grinding wheel.Especially can occur in the case: emery wheel moves relative to each other, produced thus asymmetric slightly magnet, and this asymmetric slightly magnet produce negative effect to smoothness of operation and transmission device noise.
Summary of the invention
On the other hand, the magnet according to the present invention with the feature of claim 1 has such, can check symmetrical structure simple and reliablely, thereby in multipole (hochpolig) motor, also have remarkable motor performance even if make.According to the present invention, this is realized in the following way, and magnet has the direction of magnetization and center mark, this center mark perpendicular to the direction of magnetization marked magnet center.At this, the described direction of magnetization has marked such direction, between the north and south poles of this direction in magnet.Thus, according to the present invention, center mark perpendicular to the North-south-direction of magnet marked the center of magnet, wherein, the described direction of magnetization (line) and described center mark have strutted a symmetrical plane of described magnet, and wherein, described center mark can be point and/or line.
Dependent claims preferably shows improvement project of the present invention.
Particularly preferably be, described center mark marked magnet width or described center mark marked magnet profile, for example Hu center.
Further preferably, magnet has arcuate shape.At this, the width of described arc magnet limits in this wise, that is, this width has specified the value of the projection circumferential for arc magnet.Especially can make by the arcuate shape of magnet that the air-gap between the magnet on stator always keeps constant at rotor (armature) with along rotor arrangements.
Particularly preferably, the center mark of described magnet is the mark being applied in magnet surface.Preferably, this mark is colour-coded, especially multi-color cord, or this mark is laser labelling, namely manufactures by laser.
Alternatively, the center mark of magnet is the depression of inserting in described magnet.Preferably, this depression is groove and preferably in cross section, has V-arrangement shape.At this particularly preferably, the degree of depth of depression is so selected, and, does not weaken significantly magnet body by depression that is.Preferably, this depression has 1/20th of magnet thickness.
According to another preferred design of the present invention, the center mark of described magnet is extended to the second seamed edge from the first seamed edge.Can guarantee thus the very good identifiability at the center of this magnet.Alternatively, center mark is only arranged on described magnet partly.At this particularly preferably, center mark is only arranged on first seamed edge and the second seamed edge of magnet.Thus, connect two center mark that are arranged on described seamed edge and can determine the center of magnet by imagination.
Particularly preferably, described center mark is extended along the direction of magnetization.Alternatively or additionally, described center mark perpendicular to the described direction of magnetization extend.
Preferably, by means of grinding process or by means of extrusion process be created in described magnet, for the depression of described centre mark.
Further preferably, the present invention relates to a kind of motor, especially a kind of electro-motor, it comprise have center mark according to magnet of the present invention.
In addition, the present invention relates to a kind of method for the manufacture of magnet.At this, described the method according to this invention comprises so-called step below, that is: magnet body is provided; This magnet body is ground to desired magnet shape, especially arc magnet shape; The direction of magnetization perpendicular to magnet is settled center mark, thereby makes the described direction of magnetization and described center mark strut a symmetrical plane of described magnet.At this particularly preferably, described center mark is manufactured by grinding.Thus, described center mark can side by side utilize the grinding process of described magnet body to manufacture.Alternatively, described center mark is manufactured by extruding.Further preferably, described center mark is especially configured to V-shaped groove.
Brief description of the drawings
Carry out the preferred embodiment of the present invention will be described in detail with reference to accompanying drawing below.At this, parts identical or that function is identical represent with identical Reference numeral.In the accompanying drawings:
Fig. 1 shows according to the schematic isometric of the magnet of first embodiment of the invention;
Fig. 2 shows the schematic side elevation of the magnet of Fig. 1;
Fig. 3 shows the schematic phantom having according to the motor of the magnet of Fig. 1; And
Fig. 4 to 7 shows according to the schematic perspective view of the magnet of other preferred embodiments.
Embodiment
Describe in detail according to magnet 1 of the present invention and according to motor 10 of the present invention below with reference to Fig. 1 to 3.
As especially from can being clear that Fig. 1 and 2, the magnet 1 of the first embodiment is arc magnet, and this magnet covers the arc angle of 90 °.Magnet 1 for example can be manufactured by grinding, and wherein, convex emery wheel and spill emery wheel give magnet 1 arcuate shape.
Magnet 1 comprises outside 11, inner side 12, first distolateral 13, second distolateral 14, the first side 15 and the second side 16.The direction of magnetization of magnet represents with arrow R in Fig. 2.At this, the direction of magnetization represents the orientation of the utmost point of magnet.As from being clear that Fig. 2, arctic N is arranged on the upside of magnet, and South Pole S is arranged on the downside of magnet.In this embodiment, arc magnet is radially magnetized.
Magnet 1 also comprises center mark, and this center mark is marginal trough 4 in the first embodiment.At this, this marginal trough 4 is arranged on the seamed edge 17 between inner side 12 and left end side 13.Center mark comprises laser labelling 5 in addition, this laser labelling from first distolateral 13 and outside 11 between seamed edge 19s, represent magnet at width B (referring to Fig. 2) Shang center.
At this, width B is circumferentially to the value of the projection in the plane perpendicular to direction of magnetization R for magnet.
At this, laser labelling 5 extends on whole outside 11, from seamed edge 19 laterally the opposed seamed edge 18 between 11 and second distolateral 14 extend.At this, laser labelling 5 perpendicular to direction of magnetization R extend and extend in the direction of the length L of magnet 1.At this, H represents the thickness of magnet 1.
Direction of magnetization R, marginal trough 4 and laser labelling 5 strut a symmetrical plane of magnet 1 now.At this, this symmetrical plane is perpendicular to the width B of magnet.
Fig. 3 shows the application of four magnets 1 according to the present invention in motor 10.At this, these four magnets 1 are fixed on pole shoe
on 2 and formed the stator of motor.At this, rotor 3 is arranged in the center of these magnets 1.At this, can be along the air-gap 7 between the constant maintenance rotor 3 of the circumference of rotor and magnet 1 by the present invention.Therefore this be possible, because can accurately determine that described magnet is at width B direction Shang center by marginal trough 4 and laser labelling 5 by center mark according to the present invention.Can ensure thus outside 11 and parallel, the curved trend of those faces on inner side 12, thereby make especially can to maintain the pinpoint accuracy while manufacture in the situation that of these arc magnets 1.
Thus, can obtain and there is the highest symmetric magnet 1 by the present invention, because can identify fast and simply this symmetric departing from by described intermediate marker.Thus, in the first embodiment, marginal trough 4 and laser labelling 5 be combined to form described intermediate marker.Especially can there is the quality inspection through improving by the present invention thus, thereby make to produce the motor of the higher accuracy with magnet and can produce thus higher and through improved motor performance, the transmission device noise that described motor performance especially has the smoothness of operation through improving and reduces.
Fig. 2 to Fig. 7 shows the design of the replacement of magnet 1.
Figure 4 illustrates magnet 1, this magnet has two marginal troughs 4,40.At this, the first marginal trough 4 as in the first embodiment, is arranged on the seamed edge 17 between described inner side 12 and first distolateral 13.The second marginal trough 40 be arranged on first distolateral 13 and outside 11 between seamed edge 19 on.Thus, these two marginal troughs 4,40 have formed the described center mark in this second embodiment.At this, the imaginary connecting line between the first marginal trough 4 and the second marginal trough 40 is parallel to direction of magnetization R and extends.
In the 3rd embodiment shown in Fig. 5, center mark comprises longitudinally depression 9 of first longitudinal depression 8 and second.At this, described first longitudinal depression 8 is extended and described second longitudinally depression 9 extension on the inner side 12 of magnet 1 on the outside 11 of magnet 1.These two longitudinal depressions 8,9 are configured to groove and have V-arrangement cross section.In addition, these two longitudinally cave in 8,9 on the longitudinal direction L of magnet 1, on whole surf zone, extend.First longitudinally depression 8 and second longitudinally depression 9 perpendicular to direction of magnetization R extend.
In the 4th embodiment shown in Fig. 6 of the present invention, described center mark comprises the first side depression 20, the second side depression 21 and laser labelling 5.The first side depression 20 be arranged on magnet first distolateral 13 on.The second side depression 21 be configured in magnet second distolateral 14 on.Laser labelling 5 is arranged on the outside 11 of magnet.Preferably, yet on the inner side 12 of magnet, be provided with a laser labelling.At this, the laser labelling 5 on outside 11 connects the first side depression 20 and the second side depression 21.At this, these two side depressions 20,21 are extended on first and second distolateral 13,14 whole thickness H.The first side depression 20 and the second side depression 21 are parallel to direction of magnetization R extend and described laser labelling 5 perpendicular to direction of magnetization R extend.
The 5th embodiment shown in Fig. 7 of magnet 1 comprises four depressions altogether as center mark, wherein, in Fig. 7, can see and only illustrate two.At this, the center mark of the 5th embodiment comprises that the second side in the first side depression 20 and second distolateral 14 in second longitudinal depression 9, first distolateral 13 on first longitudinal depression 8, the inner side 12 on outside 11 caves in 21.Thus, described center mark is arranged in all four sides of magnet.At this, described two sides depression 20,21 is extended in the direction of direction of magnetization R.First and second longitudinally cave in 8,9 perpendicular to described direction of magnetization R.
Shown these magnets 1 preferably in motor, be especially used as the utmost point in electro-motor in these embodiments.Thus, motor can have air-gap with pinpoint accuracy, is feasible thereby make the optimizing power of motor.Can identify fast and simply the vicious magnet of tool.
Claims (11)
1. magnet, comprising:
-the direction of magnetization (R); With
-center mark (4; 5; 8; 9; 20; 21; 40), described center mark has marked the center of described magnet (R) perpendicular to the described direction of magnetization,
-wherein, the described direction of magnetization (R) and described center mark strut the symmetrical plane of described magnet.
2. magnet according to claim 1, is characterized in that, described center mark has marked the width (B) of described magnet, or described center mark has marked the center of the profile of described magnet.
3. according to magnet in any one of the preceding claims wherein, it is characterized in that, described magnet has arcuate shape, the especially arcuate shape in the arc angle of 90 °.
4. according to magnet in any one of the preceding claims wherein, it is characterized in that, described center mark is one to be applied to the surface of described magnet, the especially mark (5) of inner side on (12) or outside (11).
5. according to the magnet described in any one in claims 1 to 3, it is characterized in that, described center mark is one to be placed to the depression (4 in described magnet; 8; 9; 20; 21; 40) a, groove especially.
6. according to magnet in any one of the preceding claims wherein, it is characterized in that, described center mark is extended to the second seamed edge (19) from first seamed edge (17) of described magnet.
7. according to the magnet described in any one in claim 1 to 5, it is characterized in that, described center mark is only arranged on the surface of described magnet partly, is especially only arranged on described first seamed edge (17) and/or described the second seamed edge (19) of described magnet.
8. according to magnet in any one of the preceding claims wherein, it is characterized in that, described center mark is extended perpendicular to the described direction of magnetization (R) along the direction of magnetization (R) extension and/or described center mark.
9. motor, especially electro-motor, it comprises multiple according to magnet in any one of the preceding claims wherein (1).
10. for the manufacture of the method for magnet (1), described method comprises step below:
-magnet body is provided;
-described magnet body is ground to desired magnet shape, especially arc magnet shape; And
-arrangement one center mark (4; 5; 8; 9; 20; 21; 40),, for marking the center of described magnet, especially at width (B) the Zhong center of described magnet, as follows, that is, the direction of magnetization of described center mark and described magnet (R) struts a symmetrical plane of described magnet.
11. methods according to claim 10, is characterized in that, described center mark is manufactured by means of grinding or extruding, and/or described center mark is configured to V-shaped groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310202467 DE102013202467A1 (en) | 2013-02-15 | 2013-02-15 | Magnet for electric machine e.g. electromotor, has center identification mark that is extended from one edge to other edge such that magnetization span direction and center identification mark are provided along plane of symmetry |
| DE102013202467.3 | 2013-02-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103996482A true CN103996482A (en) | 2014-08-20 |
| CN103996482B CN103996482B (en) | 2018-11-02 |
Family
ID=51263808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410129517.0A Expired - Fee Related CN103996482B (en) | 2013-02-15 | 2014-02-14 | Magnet, motor with center mark and the method for manufacturing magnet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103996482B (en) |
| DE (1) | DE102013202467A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158200A (en) * | 2016-08-29 | 2016-11-23 | 杭州科德磁业有限公司 | A kind of manufacture method of large scale high accuracy samarium-cobalt magnet |
| CN107887995A (en) * | 2016-09-29 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0352357A1 (en) * | 1988-07-29 | 1990-01-31 | Alternative Energy Research Center Inc. | Control electromagnet |
| JPH04352402A (en) * | 1991-05-30 | 1992-12-07 | Hitachi Metals Ltd | Circular arc-shaped magnet and manufacture thereof |
| JPH056813A (en) * | 1991-06-27 | 1993-01-14 | Hitachi Metals Ltd | Circular magnet having characteristic distribution and manufacture thereof |
| JP2001333552A (en) * | 2000-05-22 | 2001-11-30 | Tamagawa Seiki Co Ltd | Motor stator structure and manufacturing method therefor |
| CN101783559A (en) * | 2009-01-15 | 2010-07-21 | 株式会社富士通将军股份有限公司 | Permanent magnet motor |
| CN201816123U (en) * | 2010-09-10 | 2011-05-04 | 安徽龙磁科技股份有限公司 | Die for improving central magnetic field of ferrite magnet magnetic shoe |
| CN202150745U (en) * | 2011-07-30 | 2012-02-22 | 马鞍山市鑫洋永磁有限责任公司 | Motor magnetic tile having eccentric arc surfaces and used for noise reduction |
-
2013
- 2013-02-15 DE DE201310202467 patent/DE102013202467A1/en not_active Withdrawn
-
2014
- 2014-02-14 CN CN201410129517.0A patent/CN103996482B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0352357A1 (en) * | 1988-07-29 | 1990-01-31 | Alternative Energy Research Center Inc. | Control electromagnet |
| JPH04352402A (en) * | 1991-05-30 | 1992-12-07 | Hitachi Metals Ltd | Circular arc-shaped magnet and manufacture thereof |
| JPH056813A (en) * | 1991-06-27 | 1993-01-14 | Hitachi Metals Ltd | Circular magnet having characteristic distribution and manufacture thereof |
| JP2001333552A (en) * | 2000-05-22 | 2001-11-30 | Tamagawa Seiki Co Ltd | Motor stator structure and manufacturing method therefor |
| CN101783559A (en) * | 2009-01-15 | 2010-07-21 | 株式会社富士通将军股份有限公司 | Permanent magnet motor |
| CN201816123U (en) * | 2010-09-10 | 2011-05-04 | 安徽龙磁科技股份有限公司 | Die for improving central magnetic field of ferrite magnet magnetic shoe |
| CN202150745U (en) * | 2011-07-30 | 2012-02-22 | 马鞍山市鑫洋永磁有限责任公司 | Motor magnetic tile having eccentric arc surfaces and used for noise reduction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158200A (en) * | 2016-08-29 | 2016-11-23 | 杭州科德磁业有限公司 | A kind of manufacture method of large scale high accuracy samarium-cobalt magnet |
| CN107887995A (en) * | 2016-09-29 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103996482B (en) | 2018-11-02 |
| DE102013202467A1 (en) | 2014-08-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20210214 |