CN107332405B - Method for manufacturing oblique-pole rotor - Google Patents
Method for manufacturing oblique-pole rotor Download PDFInfo
- Publication number
- CN107332405B CN107332405B CN201710700401.1A CN201710700401A CN107332405B CN 107332405 B CN107332405 B CN 107332405B CN 201710700401 A CN201710700401 A CN 201710700401A CN 107332405 B CN107332405 B CN 107332405B
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- rotor
- permanent magnet
- rotor core
- core segment
- magnet mounting
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- 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
- 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]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to the field of motors, and discloses a method for manufacturing a skewed pole rotor, which comprises the following steps: manufacturing a rotor punching sheet, wherein the rotor punching sheet comprises a central axial hole positioned in the center, a plurality of permanent magnet mounting through holes arranged at intervals along the circumferential direction and an outer convex part, the outer convex part is provided with a corresponding central angular bisector, and an included angle is formed between a vertical line of the corresponding permanent magnet mounting through hole and the central angular bisector; correspondingly stacking and connecting the plurality of rotor punching sheets to form a first rotor iron core section and a second rotor iron core section respectively, wherein the rotor iron core section comprises a first surface and a second surface, and the vertical line of the corresponding permanent magnet installation through hole is positioned in the clockwise direction of the central angular bisector on the first surface; thirdly, enabling a first surface of the first rotor core segment to be opposite to a second surface of the second rotor core segment, and enabling the corresponding permanent magnet installation through holes in the first rotor core segment and the second rotor core segment to be vertically overlapped to form a permanent magnet groove; step four: a permanent magnet is inserted in each permanent magnet slot.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a manufacturing method of a skewed pole rotor.
Background
For a motor, especially a permanent magnet motor, a complex space harmonic magnetic field can be generated due to the limitation of pole slot matching selection, slot opening, local saturation and the like, and further induced voltage harmonic waves and torque pulsation of a motor winding can be caused, so that the motor is not beneficial to stable control and operation. In view of the above problems, it is common practice to attenuate the effects of air gap harmonics by means of rotor skewed slots, i.e. rotor poles. However, for the Interior Permanent Magnet (IPM) rotor, due to the structural particularity, a continuous pole-slanting method that each punching sheet rotates in sequence along the axial direction by a fixed angle cannot be adopted, and usually, only the permanent magnet and the rotor core are respectively segmented to perform pole-slanting, so that the manufacturing process is poor, a plurality of molds are required when the rotor punching sheet is manufactured, and the permanent magnet needs to be segmented and then respectively inserted into each rotor core segment, which increases the production cost and is not beneficial to the improvement of the production efficiency.
Disclosure of Invention
The invention aims to overcome the problem of poor manufacturing manufacturability of the skewed pole rotor in the prior art, and provides a manufacturing method of the skewed pole rotor, which can effectively reduce the production cost in the manufacturing process of the skewed pole rotor and improve the production efficiency.
In order to achieve the above object, an aspect of the present invention provides a method of manufacturing a skewed pole rotor, including:
firstly, a rotor punching sheet is manufactured by utilizing a die in a punching mode, so that the rotor punching sheet comprises a central axial hole, a plurality of permanent magnet mounting through holes arranged at intervals along the circumferential direction of the rotor punching sheet and outward convex parts which are positioned on the outer sides of the permanent magnet mounting through holes in a one-to-one correspondence mode with the permanent magnet mounting through holes, the outward convex parts are provided with corresponding central angle bisectors, the permanent magnet mounting through holes are provided with permanent magnet mounting through hole vertical lines which are perpendicular to the permanent magnet mounting through holes along the radial direction of the rotor punching sheet, and an included angle is formed between the corresponding permanent magnet mounting through hole vertical lines and the central angle bisectors;
correspondingly stacking and connecting a plurality of rotor punching sheets together to form a first rotor core section and a second rotor core section respectively, wherein the first rotor core section and the second rotor core section respectively comprise a first surface and a second surface, and the vertical line of the corresponding permanent magnet installation through hole is positioned in the clockwise direction of the central angle bisector on the first surface;
step three, making a first surface of the first rotor core segment opposite to a second surface of the second rotor core segment, and making corresponding permanent magnet installation through holes in the first rotor core segment and the second rotor core segment coincide with each other perpendicularly, so that the corresponding permanent magnet installation through holes in the first rotor core segment and the second rotor core segment have overlapping portions to form permanent magnet slots in an axial direction of the rotor core;
step four: and a permanent magnet is inserted into each permanent magnet slot.
Preferably, the rotor punching sheet is further provided with positioning holes, when the corresponding positioning holes of the plurality of rotor punching sheets correspond to each other, the axial center holes of the plurality of rotor punching sheets correspond to each other and the outward protruding portions correspond to each other one by one, and the second step includes making the corresponding positioning holes of the plurality of rotor punching sheets correspond to each other so as to correspondingly stack and connect the plurality of rotor punching sheets together; and step three, after the first surface of the first rotor core segment is opposite to the second surface of the second rotor core segment, enabling the corresponding positioning holes of the first rotor core segment and the second rotor core segment to correspond to each other, so that the corresponding permanent magnet installation through holes in the first rotor core segment and the second rotor core segment are vertically overlapped with each other.
Preferably, the number of the positioning holes is four, and the four positioning holes are distributed around the circle center of the rotor punching sheet at equal intervals.
Preferably, the manufacturing method further includes machining a rotor shaft after the third step, and pressing the rotor shaft into a shaft center through hole formed by penetrating the shaft center holes of the plurality of rotor punching sheets.
Preferably, the manufacturing method further includes: and fifthly, performing glue filling or injection molding treatment to enable the part of the permanent magnet mounting through hole, which is not occupied by the permanent magnet, to be filled with glue or the part of the permanent magnet mounting through hole, which is not occupied by the permanent magnet, to form an injection molding piece.
Preferably, the outer protrusion has an arcuate outer edge.
Preferably, at least a portion of the permanent magnet mounting through-hole is located on the convex portion.
Preferably, the plurality of permanent magnet mounting through holes and the plurality of outer convex parts are distributed at equal intervals along the circumferential direction of the rotor punching sheet.
Preferably, the permanent magnet mounting through hole is formed in a long strip shape, and a cross section of the permanent magnet perpendicular to the axial direction is rectangular.
Preferably, the included angle is α, the rotor slant angle of the slant-pole rotor is β, and α is 1/2 of β.
According to the manufacturing method of the oblique-pole rotor, only one set of die can be used for completing the production of the rotor punching sheet, in other words, the rotor punching sheets in the oblique-pole rotor can be completely the same; in the formed oblique-pole rotor, the permanent magnet grooves sequentially pass through each oblique-pole rotor section along the circumferential direction of the oblique-pole rotor, so that only one permanent magnet can be inserted into the corresponding permanent magnet groove, and the permanent magnet does not need to be segmented although the rotor iron core is arranged in a segmented manner along the axial direction of the oblique-pole rotor. Therefore, the manufacturing method of the oblique-pole rotor provided by the invention can achieve the traditional segmented oblique-pole effect of the oblique-pole rotor, has good and simplified manufacturability, is suitable for being applied to large-scale production, and can be applied to various built-In Permanent Magnet (IPM) rotor structures.
Drawings
FIG. 1 is a front view of a rotor sheet of one embodiment used in a method of manufacturing a skewed pole rotor according to the invention;
FIG. 2 is a schematic view of a rotor core segment formed in a method of manufacturing a skewed pole rotor according to the present invention, the rotor core segment being formed from a plurality of the rotor laminations of FIG. 1 correspondingly stacked;
fig. 3a to 3e show a process of manufacturing a skewed pole rotor using the rotor core segment of fig. 2 according to a method of manufacturing a skewed pole rotor of the present invention.
Description of the reference numerals
101 outer convex part 102 permanent magnet mounting through hole
103 axle center hole 104 positioning hole
10 first rotor core segment 11 second rotor core segment
20 permanent magnet 30 rotor shaft
α corresponding to the angle between the perpendicular line of the permanent magnet mounting through hole and the bisector of the central angle
A central angle bisector corresponding to the convex part
B permanent magnet mounting through hole vertical line
Detailed Description
In the present invention, it is to be understood that the terms "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and also correspond to orientations or positional relationships in actual use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The invention provides a method for manufacturing a skewed pole rotor, which comprises the following steps:
firstly, a rotor punching sheet is manufactured by utilizing a die in a punching mode, so that the rotor punching sheet comprises a central axial hole 103 positioned in the center, a plurality of permanent magnet installation through holes 102 arranged at intervals along the circumferential direction of the rotor punching sheet, and outer convex parts 101 which are positioned on the outer sides of the permanent magnet installation through holes 102 in a one-to-one correspondence mode with the permanent magnet installation through holes 102, the outer convex parts 101 are provided with corresponding central angular bisectors A, the permanent magnet installation through holes 102 are provided with permanent magnet installation through hole perpendicular lines B which are along the radial direction of the rotor punching sheet and perpendicular to the permanent magnet installation through holes 102, and included angles are formed between the corresponding permanent magnet installation through hole perpendicular lines B and the central angular bisectors A;
correspondingly stacking and connecting a plurality of rotor punching sheets together to form a first rotor core section 10 and a second rotor core section 11 respectively, wherein the first rotor core section 10 and the second rotor core section 11 respectively comprise a first surface and a second surface, and the vertical line B of the corresponding permanent magnet installation through hole is positioned in the clockwise direction of the central angle bisector A on the first surface;
step three, making a first face of the first rotor core segment 10 opposite to a second face of the second rotor core segment 11, and making corresponding permanent magnet mounting through-hole perpendicular lines B in the first rotor core segment 10 and the second rotor core segment 11 coincide with each other, so that corresponding permanent magnet mounting through-holes 102 in the first rotor core segment 10 and the second rotor core segment 11 have overlapping portions to form permanent magnet slots in an axial direction of the rotor core;
step four: a permanent magnet 20 is inserted in each of the permanent magnet slots.
According to the manufacturing method of the oblique-pole rotor, only one set of die can be used for completing the production of the rotor punching sheet, in other words, the rotor punching sheets in the oblique-pole rotor can be completely the same; in addition, in the formed oblique-pole rotor, the permanent magnet grooves sequentially pass through each oblique-pole rotor section along the circumferential direction of the oblique-pole rotor, so that only one permanent magnet 20 can be inserted into the corresponding permanent magnet groove, and the permanent magnets 20 are not required to be segmented although the rotor iron core is arranged in a segmented manner along the axial direction of the oblique-pole rotor.
Referring to fig. 3a to 3e, it can be understood that, since the method of manufacturing the skewed pole rotor of the present invention is used, such that when a first face of the first rotor core segment 10 is opposed to a second face of the second rotor core segment 11 and the corresponding permanent magnet mounting through-hole perpendiculars B in the first and second rotor core segments 10 and 11 coincide with each other, the corresponding permanent magnet mounting through holes 102 in the first and second rotor core segments 10 and 11 have an overlapping portion, and the overlapping portions form permanent magnet slots extending through the entire rotor core (including the first rotor core segment 10 and the second rotor core segment 11) in the axial direction of the rotor, therefore, in the rotor skewed pole, the permanent magnet 20 extends through the whole rotor core axially without being inserted in a segmented mode, and efficient machining of the skewed pole rotor is facilitated; moreover, the rotor punching sheets used in the whole oblique-pole rotor are the same and can be processed by using the same die, so that large-scale efficient manufacturing is facilitated, and the processing cost is reduced; therefore, the manufacturing method of the oblique-pole rotor provided by the invention can achieve the traditional segmented oblique-pole effect of the oblique-pole rotor, has good and simplified manufacturability, is suitable for being applied to large-scale production, and can be applied to various built-In Permanent Magnet (IPM) rotor structures.
The rotor sheets in the first rotor core segment 10 and the second rotor core segment 11 are the same, and the connection of the plurality of rotor sheets in each rotor core segment can be realized by using a connecting piece.
And, referring to fig. 2, the core segment is formed by stacking a plurality of corresponding rotor sheets (corresponding to the axial hole 103, the corresponding positioning hole 104, and the corresponding outward protruding portion 101, respectively), wherein the plurality of rotor sheets are identical, and the core segment includes a first surface and a second surface, and in the first surface, the corresponding permanent magnet installation through hole perpendicular line B is located clockwise to the central angle bisector a, so that the upper surface of the core segment shown in fig. 2 is the first surface thereof, and the lower surface thereof is the second surface thereof.
Preferably, the rotor punching sheet is further provided with positioning holes 104, when the corresponding positioning holes 104 of the plurality of rotor punching sheets correspond to each other, the axial holes 103 of the plurality of rotor punching sheets correspond to each other and the outer protrusions 101 correspond to each other one by one, and the second step includes making the corresponding positioning holes 104 of the plurality of rotor punching sheets correspond to each other so as to correspondingly stack and connect the plurality of rotor punching sheets together; the third step includes making the corresponding positioning holes 104 of the first and second rotor core segments 10 and 11 correspond to each other after the first face of the first rotor core segment 10 is opposed to the second face of the second rotor core segment 11, so that the corresponding permanent magnet mounting through-hole perpendicular lines B in the first and second rotor core segments 10 and 11 coincide with each other.
The arrangement of the positioning holes 104 greatly facilitates the operation of correspondingly overlapping a plurality of rotor sheets and oppositely arranging the first rotor core segment 10 and the second rotor core segment 11 in the manufacturing process of the skewed pole rotor, and preferably, the rotor sheets are further formed with the positioning holes 104, for example, referring to fig. 1, the positioning holes 104 include four positioning holes 104, the four positioning holes 104 are distributed around the center of the rotor sheets at equal intervals, of course, the positioning holes 104 may have other forms, and the rotor sheets may be formed with non-hole-shaped positioning portions, such as positioning blocks or positioning notches, and the like.
The manufacturing method may further include, after the third step, machining the rotor shaft 30, and pressing the rotor shaft 30 into a shaft center through hole formed by penetrating the shaft center holes 103 of the plurality of rotor sheets.
Further, the manufacturing method may further include: and step five, performing glue filling or injection molding treatment, so that the part of the permanent magnet mounting through hole 102 not occupied by the permanent magnet 20 can be filled with glue or the part of the permanent magnet mounting through hole 102 not occupied by the permanent magnet 20 forms an injection molding piece.
Referring to fig. 3a to 3e, step three, step four and step five of the manufacturing method of the present invention will be described in detail, taking two rotor core segments shown in fig. 2, respectively defined as a first rotor core segment 10 and a second rotor core segment 11, turning the second rotor core segment 11 by 180 degrees, such that a first face of said first rotor core segment 10 is opposite to a second face of said second rotor core segment 11, and the corresponding permanent magnet mounting through-hole perpendicular lines B in the first rotor core segment 10 and the second rotor core segment 11 are made to coincide with each other, the second rotor core segment 11 is placed on the first rotor core segment 10, and at this time, the corresponding permanent magnet mounting through holes 102 in the first and second rotor core segments 10 and 11 have overlapping portions, thereby forming permanent magnet slots in the axial direction of the rotor core. And, after the permanent magnet 20 is assembled in the rotor core, the subsequent processing operations such as glue filling, injection molding or end cover sealing can be performed. After the rotor core is subjected to glue filling operation, the part of the permanent magnet mounting through hole 102, which is not occupied by the permanent magnet 20, can be filled with glue, and after the rotor core is subjected to injection molding operation, the part of the permanent magnet mounting through hole 102, which is not occupied by the permanent magnet 20, can form an injection molding part, so that a better fixing effect can be achieved on the permanent magnet 20 and the rotor core.
Optionally, the outer convex portion 101 has an arc-shaped outer edge, so that the rotor sheet has a more regular and smooth outer edge, magnetic performance can be further improved, and the rotor sheet is easier to process and manufacture.
In addition, referring to fig. 1, in the present embodiment, the permanent magnet installation through hole 102 is formed in a long strip shape, in this embodiment, the shape of the permanent magnet installation through hole 102 is more favorable for formation of a permanent magnet slot to be improved later, and both axial ends of the permanent magnet installation through hole 102 may be respectively adjacent to the edges of the outward protruding portions 101, and the size of the permanent magnet installation through hole 102 is preferably relatively large, which is more favorable for formation of a permanent magnet slot to install the permanent magnet 20 when the rotor core segments are reversely overlapped, and at the same time, the amount of material used may be reduced.
Preferably, at least a portion of the permanent magnet mounting through-hole 102 is located on the outward protrusion 101, that is, the permanent magnet mounting through-hole 102 may extend to the outward protrusion 101. Accordingly, the permanent magnet mounting through hole 102 has better correspondence with the outward protruding portion 101, and the pole-tilting effect of the pole-tilting rotor can be further improved.
The plurality of permanent magnet mounting through holes 102 and the plurality of outward protrusions 101 are distributed at equal intervals in the circumferential direction of the rotor sheet.
Further, the skewed pole rotor further includes a plurality of permanent magnets 20, the plurality of permanent magnets 20 are inserted into the permanent magnet slots in a one-to-one correspondence, and a cross-section of the permanent magnets 20 perpendicular to the axial direction may be rectangular.
In the illustrated embodiment, the skewed pole rotor includes two rotor core segments and eight permanent magnets 20. The two rotor core segments are coaxially and sequentially arranged, and can be connected with each other or not connected with each other. The eight permanent magnets 20 are distributed along the circumferential direction of the rotor core segment, the number of rotor poles of the oblique-pole rotor is eight, and is equal to the number of the permanent magnets 20, the present embodiment is described only as an example, and in the present invention, the number of the rotor core segment and the permanent magnets 20 is not particularly limited, and may be specifically set according to specific situations, for example, according to the number of required rotor poles.
In addition, the included angle is α, the rotor slant angle of the slant-pole rotor is β, then α is 1/2 of β, referring to fig. 3a to 3e, the outer convex portions 101 and the permanent magnet mounting through holes 102 on the two rotor core segments are respectively arranged in a staggered manner in the circumferential direction of the rotor core segments, therefore, the two rotor core segments can be formed into a twisted structure, namely, one rotor core segment is twisted by a certain angle relative to the other rotor core segment in the axial direction, namely, the rotor slant angle is β, the twisted angle can be set as required, and then the included angle α is further designed to obtain the required slant-pole rotor twisting angle.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (7)
1. A method of manufacturing a skewed pole rotor, comprising:
firstly, a rotor punching sheet is manufactured by punching with a die, so that the rotor punching sheet comprises a central axial hole (103) positioned in the center, a plurality of permanent magnet mounting through holes (102) arranged at intervals along the circumferential direction of the rotor punching sheet, and outer convex parts (101) which are positioned on the outer sides of the permanent magnet mounting through holes (102) in one-to-one correspondence with the permanent magnet mounting through holes (102), the outer convex parts (101) are provided with corresponding central angular bisectors (A), the permanent magnet mounting through holes (102) are provided with permanent magnet mounting through hole perpendicular lines (B) which are along the radial direction of the rotor punching sheet and perpendicular to the permanent magnet mounting through holes (102), and an included angle is formed between the corresponding permanent magnet mounting through hole perpendicular lines (B) and the central angular bisectors (A);
correspondingly stacking and connecting a plurality of rotor punching sheets together to form a first rotor core section (10) and a second rotor core section (11), wherein the first rotor core section (10) and the second rotor core section (11) respectively comprise a first surface and a second surface, and the corresponding permanent magnet mounting through hole perpendicular line (B) is positioned in the clockwise direction of the central angular bisector (A) on the first surface;
step three, making a first face of the first rotor core segment (10) opposite to a second face of the second rotor core segment (11), and making corresponding permanent magnet mounting through-hole perpendicular lines (B) in the first rotor core segment (10) and the second rotor core segment (11) coincide with each other, so that corresponding permanent magnet mounting through-holes (102) in the first rotor core segment (10) and the second rotor core segment (11) have overlapping portions to form permanent magnet slots in an axial direction of the rotor core;
step four: inserting a permanent magnet (20) in each of the permanent magnet slots;
wherein the outer protrusion (101) has an arcuate outer edge;
the included angle is α, the rotor oblique angle of the oblique-pole rotor is β, and α is 1/2 of β;
the manufacturing method further comprises the step three, after the step three, the rotor shaft (30) is machined, and the rotor shaft (30) is pressed into a shaft center through hole formed by penetrating the shaft center holes (103) of the rotor punching sheets.
2. The manufacturing method of the oblique-pole rotor as claimed in claim 1, wherein the rotor punching sheet is further formed with positioning holes (104), when the corresponding positioning holes (104) of the plurality of rotor punching sheets correspond to each other, the axial center holes (103) of the plurality of rotor punching sheets correspond to each other and the outer protrusions (101) correspond to each other one by one, and the second step includes corresponding the corresponding positioning holes (104) of the plurality of rotor punching sheets to correspondingly stack and connect the plurality of rotor punching sheets together; the third step comprises corresponding the corresponding positioning holes (104) of the first rotor core segment (10) and the second rotor core segment (11) to each other after the first face of the first rotor core segment (10) is opposite to the second face of the second rotor core segment (11) so that the corresponding permanent magnet mounting through hole perpendiculars (B) in the first rotor core segment (10) and the second rotor core segment (11) coincide with each other.
3. The method for manufacturing the oblique-pole rotor as recited in claim 2, wherein the positioning holes (104) comprise four positioning holes, and the four positioning holes (104) are distributed around the circle center of the rotor punching sheet at equal intervals.
4. The method of manufacturing a skewed pole rotor as claimed in claim 1, further comprising: and step five, performing glue filling or injection molding treatment to enable the part of the permanent magnet mounting through hole (102) not occupied by the permanent magnet (20) to be filled with glue or the part of the permanent magnet mounting through hole (102) not occupied by the permanent magnet (20) to form an injection molding piece.
5. Method for manufacturing a skewed pole rotor according to any of claims 1-4, wherein at least a part of said permanent magnet mounting through hole (102) is located on said male part (101).
6. The method for manufacturing a skewed pole rotor according to any of claims 1-4, wherein the plurality of permanent magnet mounting through holes (102) and the plurality of outward protrusions (101) are distributed at equal intervals along the circumferential direction of the rotor sheet.
7. The method of manufacturing a skewed pole rotor according to any of claims 1-4, wherein said permanent magnet mounting through hole (102) is formed in a bar shape, and a cross section of said permanent magnet (20) perpendicular to an axial direction is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700401.1A CN107332405B (en) | 2017-08-16 | 2017-08-16 | Method for manufacturing oblique-pole rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700401.1A CN107332405B (en) | 2017-08-16 | 2017-08-16 | Method for manufacturing oblique-pole rotor |
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| CN107332405A CN107332405A (en) | 2017-11-07 |
| CN107332405B true CN107332405B (en) | 2020-03-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109962589A (en) * | 2017-12-26 | 2019-07-02 | 宁波菲仕电机技术有限公司 | The axial segmentation of rotor structure for permanent magnet motor deflects assemble method |
| CN108988532B (en) * | 2018-08-10 | 2020-04-17 | 安徽鸿创新能源动力有限公司 | Motor rotor with integral glue injection function and integral glue injection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1278472C (en) * | 2002-07-12 | 2006-10-04 | 株式会社日立产机系统 | Permanent magnet type rotary motor and compressor using same |
| JP5259934B2 (en) * | 2006-07-20 | 2013-08-07 | 株式会社日立産機システム | Permanent magnet type rotating electric machine and compressor using the same |
| JP5641517B2 (en) * | 2010-06-16 | 2014-12-17 | 株式会社明電舎 | Brushless motor |
| JP2012080713A (en) * | 2010-10-05 | 2012-04-19 | Hitachi Ltd | Permanent magnet-type rotary electric machine and compressor using the same |
| CN106451988A (en) * | 2016-12-16 | 2017-02-22 | 日本电产凯宇汽车电器（江苏）有限公司 | Brushless electric machine rotor sheet of automobile brake system |
| CN107196436B (en) * | 2017-07-03 | 2019-04-16 | 广东威灵电机制造有限公司 | Rotor punching, skewed pole rotor and magneto |
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