CN113556011A - Method for manufacturing squirrel cage of motor rotor - Google Patents
Method for manufacturing squirrel cage of motor rotor Download PDFInfo
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- CN113556011A CN113556011A CN202110892268.0A CN202110892268A CN113556011A CN 113556011 A CN113556011 A CN 113556011A CN 202110892268 A CN202110892268 A CN 202110892268A CN 113556011 A CN113556011 A CN 113556011A
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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
- H02K15/0012—Manufacturing cage rotors
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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
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- Induction Machinery (AREA)
Abstract
The invention discloses a method for preparing a rotor squirrel cage of a motor, wherein the rotor squirrel cage comprises two sets of end ring combinations distributed at two ends of a rotor iron core, a plurality of rotor conducting bars assembled on the rotor iron core and other components. After the conducting bars and the rotor core are assembled, the conducting bars slightly exceed the surface of the rotor core, and the exceeding parts are fused with an end ring I in an end ring combination into a whole in a special welding mode. Make end ring I and iron core terminal surface butt, reduce the length of conducting bar to improve the integration degree of rotor squirrel cage. The rotor comprises two sets of end ring combinations distributed at two ends of a rotor core, wherein each set of end ring combination comprises an end ring I with a thinner size and an end ring II subjected to secondary welding; in the implementation, each set of end ring combination needs to be welded twice, the first welding is used for welding the thin end ring I and the guide bar into a whole, and the second welding is used for welding the end ring II and the end ring I into a whole. The invention achieves the purposes of greatly reducing the usage amount of the solder and the welding flux and reducing the manufacturing cost by innovatively designing the end ring and the conducting bar structure forming the squirrel cage of the motor rotor.
Description
Technical Field
The invention belongs to the technical field of motor preparation, and particularly relates to a method for manufacturing a squirrel cage of a motor rotor.
Background
At present, the welding of parts such as end rings, conducting bars and the like forming the squirrel cage of the motor rotor is mainly implemented by adopting medium-frequency induction equipment. Medium frequency induction brazing is the assembly of surface treated workpieces together in a lap joint with a braze material placed near or between the joint gaps. And (3) heating by using special intermediate frequency induction brazing equipment, and performing brazing treatment by using auxiliary materials such as soldering flux and the like matched with the solder in an auxiliary manner. Medium frequency induction brazing is commonly used for welding end rings, conducting bars and other parts forming a motor rotor cage.
Based on the welding mode, the structure of the main components of the motor rotor cage is correspondingly designed, a welding groove is preset on a rotor end ring and is used for assembling with conducting bars forming the rotor cage before welding, and silver solder is placed in an end ring groove in a conducting bar gap. When welding, the medium frequency induction equipment heats the end ring locally, when the workpiece and the brazing filler metal are heated to a temperature slightly higher than the melting point of the brazing filler metal, the brazing filler metal is melted (the workpiece is not melted) and filled in gaps between the solid workpieces, the liquid brazing filler metal and the workpiece metal are mutually diffused and dissolved, a brazing joint is formed after cooling, and the end ring and the guide bar are welded into a whole to form the rotor squirrel cage. The implementation of medium-frequency induction brazing is adopted, generally, a rotor guide bar is long, a long gap exists between a welding rear end ring and an iron core, air flow is generated in the operation process of a motor, certain damage exists on the insulation of a position corresponding to a motor stator, meanwhile, the operation noise is large, and the problems of poor vibration and dynamic balance caused by low natural frequency and the like exist even if the integrity of a rotor is not high. Meanwhile, the light weight, the integration, the use cost of the solder and the welding flux and the like of the motor rotor squirrel cage face larger challenges.
Generally, the welding method is limited, the conducting bars have a certain length, the lapping positions of the conducting bars and the end rings are ensured to reach a certain distance from the rotor core, poor welding fusion caused by over-speed heat conduction is prevented, and the product quality problem caused by heat damage of an insulating layer of a punching sheet of the rotor core is prevented, so that the length of the rotor conducting bars is longer, a longer gap exists between the welded end rings and the core, the conducting bars distributed at intervals are similar to fan blades in structure, stronger air flow can be generated in the running process of the motor, certain damage is caused to the insulation of the corresponding part of the motor stator, and the running noise is larger; meanwhile, the problems of poor vibration and dynamic balance caused by low natural frequency of the rotor exist; during welding, besides the solder with high silver content, the corresponding soldering flux is matched to ensure the fluidity and the fusion performance of the solder, and the solder and the soldering flux have large consumption and high cost; before welding, the welding surface needs to be deeply cleaned to ensure no impurities; the end ring welding groove needs to be specially designed in size, and a size space deformed by heating is reserved, so that the size matching problem caused by rapid deformation due to local heating is prevented; the assembly and fixation of the conducting bars and the iron core have higher requirements, and the problem of infirm welding caused by individual conducting bar looseness is solved.
Disclosure of Invention
The invention provides a method for manufacturing a squirrel cage of a motor rotor, which aims at the welding implementation characteristics of end rings and conducting bars, and realizes the application of a welding technology based on novel end rings and conducting bars in the manufacture of the squirrel cage of the motor rotor based on the assembling mode of the conducting bars and a rotor core, thereby achieving the technical scheme for manufacturing the squirrel cage of the rotor which meets the design targets of high integration degree, pollution reduction, cost saving and the like.
The invention is realized by adopting the following technical scheme:
a method for manufacturing a squirrel cage of a motor rotor comprises the steps that the squirrel cage of the motor rotor comprises a rotor core and conducting bars, wherein the conducting bars are assembled in a peripheral rotor groove of the rotor core; end rings I are symmetrically welded and assembled on two sides of the rotor core, grooves matched with the sections of the conducting bars are formed in the end rings I, and the end parts of the conducting bars are located in the corresponding grooves and are in clearance fit; and end rings II are welded and assembled outside the end rings I positioned on the two sides.
The specific manufacturing method comprises the following steps:
(1) before assembly, processing the end surface of the conducting bar to ensure the smooth finish; the length of the processed conducting bar can ensure that: the conducting bars and the rotor core are assembled and then exceed the surface of the rotor core, and the exceeding parts are fused with an end ring I in an end ring combination into a whole in a body melting welding mode; in the specific design, the length of the conducting bar exceeding the surface of the rotor core is equivalent to the thickness of the end ring I;
(2) end ring I of motor rotor
Each end ring combination comprises an end ring I and an end ring II which needs to be welded for the second time; the end ring I is assembled with the guide bar gap into a whole through a groove on the ring surface of the end ring I;
(3) welding of end ring I and conducting bar
Preparation before welding: firmly placing the assembled rotor core in welding equipment, wherein the welding principle is that local high temperature melts and connects the end ring I and the joint body of the conducting bar together;
(4) and I-shaped end ring post-welding machining
After the end ring I is welded with the guide bar and before the end ring II is welded with the end ring I, processing the inner ring, the outer circle and the end face of the end ring I to form an assembly matching structure with the end ring II, wherein the processed size meets the combined design requirement of the end ring I and the end ring II;
(5) end ring II
In order to ensure the welding reliability, the end ring II and the end ring I are made of the same material; the thickness dimension of end ring II is 2~10 times of end ring I, and the excircle diameter: the end ring II is more than or equal to the end ring I, and the diameter of the inner ring is as follows: the end ring II is less than or equal to the end ring I;
(6) combination and welding of end ring II and end ring I
The welding mode is selected from rotary friction welding or medium-frequency induction welding;
(7) welding implementation of the other end of the squirrel cage of the motor rotor
And (4) adjusting the position of the rotor core with the squirrel cage welded at one end, repeating the steps (3) to (6), and welding the other end of the squirrel cage rotor.
Preferably, in the step (2), the thickness of the end ring I is 2-8 mm; the material of the end ring I is pure copper or copper alloy.
Further preferably, in the step (3), the welding method is spin friction welding, friction stir welding, laser welding or resistance welding.
Preferably, in the step (5), in order to ensure the reliability of the end ring assembly after welding, the outer edge of the end ring ii is provided with an outer flange, the inner edge of the end ring ii is provided with an inner flange, and the inner flange and the outer flange are suitable for assembling with the inner ring surface and the outer ring surface of the end ring i.
The invention has the following advantages:
1. assembling a motor rotor core and a conducting bar: the overall structure of the conducting bar is similar to the traditional conducting bar structure based on medium-frequency induction welding in shape, and the material is the same, and the conducting bar is usually pure copper or copper alloy. In the aspect of structure, after the conducting bars and the rotor core are assembled, the conducting bars slightly exceed the surface of the rotor core, and the exceeding parts are fused with an end ring I in an end ring combination into a whole in a welding mode of melting a body. In the specific design, the length design of the conducting bars needs to ensure that the length exceeding the surface of the rotor core is equivalent to the thickness of the end ring I, the selectivity can be 2-8 mm, and the size is related to the equipment and process guarantee capacity of implementing a novel welding technology. Compared with the traditional intermediate frequency induction welded rotor conducting bar, the processing of the end face of the conducting bar is relatively simple, the requirement on fixation positioning after the conducting bar and the iron core are assembled is greatly reduced, and the uniformity and consistency of the size of the rotor conducting bar can be guaranteed through a simple tool during welding.
2. Motor rotor end ring combination
The motor rotor squirrel cage end ring combination based on the novel welding technology comprises two sets of end ring combinations distributed at two ends of a rotor core, wherein each set of end ring combination comprises an end ring I with a thinner size and an end ring II subjected to secondary welding. The material of the end ring I and the end ring II is selected from proper materials which are determined by design calculation and form a rotor squirrel cage, and the materials are usually pure copper or copper alloy; design size, the thickness dimension of end ring II is 2~10 times of end ring I usually, excircle diameter: the end ring II is more than or equal to the end ring I, and the diameter of the inner ring is as follows: and the end ring II is less than or equal to the end ring I. Each end ring combination needs to be welded twice, the first welding is used for welding the thin end ring I and the guide bar into a whole, and the second welding is used for welding the end ring II and the end ring I into a whole. The welding of the end ring II and the end ring I is substantially different from the traditional rotor squirrel cage welding structure even if a medium-frequency induction welding technology is adopted, the welding flux is only distributed on the contact surface of the end ring I and the end ring II, the thickness of the welding flux is about one twentieth to one tenth of the thickness of the traditional medium-frequency induction welding squirrel cage structure, and the use of the welding flux and the scaling powder can be greatly saved.
The motor rotor squirrel cage structure is reasonable in design, and the end ring and conducting bar structures forming the motor rotor squirrel cage are innovatively designed, so that the purposes of greatly reducing the use amount of welding flux and soldering flux and reducing the manufacturing cost are achieved, and meanwhile, the purposes of light weight and integration of the motor rotor squirrel cage are improved. Compared with the traditional rotor squirrel cage based on the medium-frequency induction welding technology, the squirrel cage has good structural integrity, avoids welding flux and auxiliary materials for welding, and has little pollution and low cost; compared with the traditional rotor squirrel cage based on the casting technology, the structure of the squirrel cage is good in testability, and the influence of the high temperature of the casting metal solution on the performance of the rotor iron core can be avoided.
Drawings
Fig. 1 shows a schematic view of the assembly of a rotor core with a conductor bar.
Fig. 2 shows a schematic view of a rotor bar.
Figure 3 shows a schematic view of an end ring i.
Figure 4 shows a schematic view of end ring ii.
Fig. 5 shows a schematic view of the assembly of the end ring i with the rotor bars.
Figure 6 shows a schematic view of the assembly of end ring ii with end ring i.
Fig. 7 shows a schematic view of the rotor cage structure assembly.
Fig. 8 shows a schematic view of a conventional rotor cage structure.
In the figure: 1-rotor core, 2-conducting bar, 3-end ring I, 4-end ring II, 5-existing end ring; 301-slotted, 401-outer flange, 402-inner flange.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
A squirrel-cage structure of a motor rotor comprises a rotor core 1 and conducting bars 2, wherein the conducting bars 2 are assembled in a peripheral rotor groove of the rotor core 1 as shown in figures 1 and 2.
As shown in fig. 3, the end ring i 3 is provided with a slot 301 adapted to the cross section of the conducting bar 2.
As shown in fig. 5, the rotor core 1 is welded symmetrically on both sides with the end rings i 3, and the ends of each bar 2 are located in the corresponding slots 301 and are in clearance fit.
As shown in fig. 4 and 6, the end rings i 3 at both sides are externally welded and assembled with end rings ii 4.
The motor rotor squirrel cage comprises two sets of end ring combinations distributed at two ends of a rotor core, a plurality of rotor conducting bars assembled on the rotor core and other components. In specific implementation, the method for manufacturing the squirrel cage of the motor rotor comprises the following steps:
(1) the conducting bar structure of the motor rotor is similar to the traditional conducting bar structure based on medium-frequency induction welding in shape, is made of the same material and is usually pure copper or copper alloy. Before assembly, the end face of the conducting bar is processed, and universal smooth finish is guaranteed; the length of the processed conducting bar can ensure that: after the conducting bars and the rotor core are assembled, the conducting bars slightly exceed the surface of the rotor core, and the exceeding parts are fused with an end ring I in an end ring combination into a whole in a welding mode of melting a body. In the specific design, the length of the rotor guide bar is designed to ensure that the length of the rotor guide bar exceeds the surface of a rotor core and is less than or equal to the thickness of an end ring I in an end ring combination, the selectivity can be 2-8 mm, and the size is also related to the guarantee capacity of welding equipment and welding process. And (3) assembling the conducting bars in rotor grooves arranged on the rotor core according to the design requirements, and enabling the conducting bars not to loosen or fall off through a simple tensioning process. The uniformity and consistency of the size of the rotor conducting bar can be guaranteed through a simple tool during welding.
(2) Motor rotor end ring I
Each end ring combination comprises an end ring I with a thinner size and an end ring II which needs to be subjected to secondary welding. The materials of the end ring I and the end ring II are selected from proper materials which are determined by design calculation and form a rotor squirrel cage, the conductivity of the end ring and certain structural strength performance need to be considered comprehensively, and the end ring I and the end ring II are usually pure copper or copper alloy; the thickness dimension of end ring I is relevant with the equipment guarantee ability of implementing the welding, and the selectivity can be 2~8 mm. In order to guarantee the integrity of end ring I and conducting bar after welding, selectively, the cooperation of end ring I and conducting bar can adopt the cooperation form of poroid, promptly with conducting bar complex position on the anchor ring of end ring I, set up the fluting unanimous with conducting bar cross sectional shape, be convenient for end ring I and the light clearance assembly of the conducting bar that stretches out rotor core as an organic whole, selective gap size can be 0.1~1 mm. The excess part is fused with an end ring I in the end ring combination into a whole in a special welding mode, so that the end ring I is abutted to the end face of the iron core, the length of the conducting bar is reduced, and the integration degree of the rotor squirrel cage is improved.
The size of the outer circle of the end ring I is larger than the diameter of an outer contour circle formed after the guide bars are inserted into the iron core, and machining allowance of 2-8 mm is reserved generally; the size of the inner ring of the end ring I is smaller than the diameter of an inner contour circle formed after the guide bar is inserted into the iron core, and the size and the machining allowance of 3-8 mm are reserved generally.
(3) Welding of end ring I and rotor conducting bar
Preparation before welding: and firmly placing the assembled rotor core (comprising the conducting bars) in welding equipment, wherein the welding principle is that the joint part body of the end ring I and the conducting bars is melted by local high temperature and connected together. The welding mode can select the welding technology of local melting of the body, such as rotary friction welding, friction stir welding, laser welding, novel resistance welding and the like. The simple positioning tool is placed at the bottom of the rotor core, so that the position of the conducting bar at one end to be welded is parallel and level, and the conducting bar cannot move up and down. The end face of the conducting bar of the welding end and the welding surface of the end ring I are cleaned, and no foreign matter is ensured.
Taking friction welding as an example for explanation, the special friction welding equipment is used for welding the joint surfaces of the guide bars and the end rings I. Specifically, if a friction stir welding technology is adopted, the end ring I needs to be placed and assembled on an iron core of a welding end, and the guide bar holes formed in the end ring I are accurately sleeved on all welding guide bars. Welding the hole parts of the conducting bars and the conducting bar arranged on the end ring I along a set path on the premise that a welding head of friction stir welding rotates at a high speed and has a certain pressing force; the body of the connecting part of the end ring I and the conducting bar is locally melted and combined together through a welding head which rotates at a high speed and is pressed in, so that reliable welding is formed; if the rotary friction welding technology is adopted, the end ring I rotates at a high speed, sufficient pressing force is applied, the end ring I is rapidly contacted with the end part of the conducting bar, partial melting of the conducting bar and the end ring I body is achieved, and fusion welding is integrated.
(4) End ring I postweld machining
After the end ring I and the conducting bar are welded, and before the end ring II and the end ring I are welded, the inner ring, the outer circle and the end face of the end ring I are machined, so that the end ring I and the end ring II form an assembly matching structure, and the machined size meets the combined design requirements of the end ring I and the end ring II.
(5) End ring II
Each end ring combination comprises an end ring I with a thinner size and an end ring II which needs to be subjected to secondary welding. In order to ensure the welding reliability, the material of the end ring II is generally the same as that of the end ring I. The thickness dimension of end ring II is 2~10 times of end ring I usually, and the excircle diameter: the end ring II is more than or equal to the end ring I, and the diameter of the inner ring is as follows: and the end ring II is less than or equal to the end ring I.
In order to ensure the reliability of the end ring after combination welding, the outer edge of the end ring II is provided with an outer flange, the inner edge of the end ring II is provided with an inner flange, and the inner flange and the outer flange are suitable for assembling with the inner ring surface and the outer ring surface of the end ring I.
(6) Combination and welding of end ring II and end ring I
And after the end ring I and the guide bar are welded and processed, the end face of the end ring I and the end ring II are designed into a matched assembly structure, and the end ring II and the end ring I are welded after the end ring I and the guide bar are arranged according to the design requirements. The welding mode can be selected from rotary friction welding or medium frequency induction welding. The solder adopting the medium-frequency induction welding is greatly reduced compared with the solder of the traditional structure, and is about one twentieth to one tenth of the traditional induction welding solder, because the solder is only filled in the contact surfaces of the end ring I and the end ring II, the thickness is about 0.1-0.3 mm, and the thickness of the solder of the traditional medium-frequency induction welding is 3-6 mm, therefore, the medium-frequency induction welding of the structure can greatly reduce the use of the solder and the soldering flux, thereby achieving the purposes of reducing pollution and saving cost.
If the rotary friction welding technology is adopted to weld the end ring II and the end ring I, special equipment is used to rotate the end ring II at a high speed and apply enough pressing force to quickly contact the end face of the end ring I integrated with the rotor core and weld the end ring I and the end ring II into a whole in a fusion mode, so that the use of welding flux and soldering flux can be avoided, and the purposes of reducing pollution and saving cost to the maximum extent are achieved.
(7) Welding implementation of the other end of the squirrel cage of the motor rotor
And (4) adjusting the position of the rotor core with the squirrel cage welded at one end, repeating the steps (3) to (6), and welding the other end of the squirrel cage rotor.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the detailed description is made with reference to the embodiments of the present invention, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which shall be covered by the claims of the present invention.
Claims (4)
1. A method for manufacturing a squirrel cage of a motor rotor is characterized by comprising the following steps: the motor rotor squirrel cage comprises a rotor core (1) and conducting bars (2), wherein the conducting bars (2) are assembled in a peripheral rotor groove of the rotor core (1); end rings I (3) are symmetrically welded and assembled on two sides of the rotor core (1), grooves (301) matched with the sections of the guide bars (2) are formed in the end rings I (3), and the end parts of the guide bars (2) are located in the corresponding grooves (301) and are in clearance fit; end rings II (4) are welded and assembled outside the end rings I (3) positioned at the two sides;
the specific manufacturing method comprises the following steps:
(1) before assembly, processing the end surface of the conducting bar to ensure the smooth finish; the length of the processed conducting bar can ensure that: the conducting bars and the rotor core are assembled and then exceed the surface of the rotor core, and the exceeding parts are fused with an end ring I in an end ring combination into a whole in a body melting welding mode; in the specific design, the length of the conducting bar exceeding the surface of the rotor core is equivalent to the thickness of the end ring I;
(2) end ring I of motor rotor
Each end ring combination comprises an end ring I and an end ring II which needs to be welded for the second time; the end ring I is assembled with the guide bar gap into a whole through a groove on the ring surface of the end ring I;
(3) welding of end ring I and conducting bar
Preparation before welding: firmly placing the assembled rotor core in welding equipment, wherein the welding principle is that local high temperature melts and connects the end ring I and the joint body of the conducting bar together;
(4) and I-shaped end ring post-welding machining
After the end ring I is welded with the guide bar and before the end ring II is welded with the end ring I, processing the inner ring, the outer circle and the end face of the end ring I to form an assembly matching structure with the end ring II, wherein the processed size meets the combined design requirement of the end ring I and the end ring II;
(5) end ring II
In order to ensure the welding reliability, the end ring II and the end ring I are made of the same material; the thickness dimension of end ring II is 2~10 times of end ring I, and the excircle diameter: the end ring II is more than or equal to the end ring I, and the diameter of the inner ring is as follows: the end ring II is less than or equal to the end ring I;
(6) combination and welding of end ring II and end ring I
The welding mode is selected from rotary friction welding or medium-frequency induction welding;
(7) welding implementation of the other end of the squirrel cage of the motor rotor
And (4) adjusting the position of the rotor core with the squirrel cage welded at one end, repeating the steps (3) to (6), and welding the other end of the squirrel cage rotor.
2. The method for making a squirrel cage of a rotor of an electric motor as claimed in claim 1, wherein: in the step (2), the thickness of the end ring I is 2-8 mm; the material of the end ring I is pure copper or copper alloy.
3. The method for making a squirrel cage of a rotor of an electric motor as claimed in claim 2, wherein: in the step (3), the welding mode adopts rotary friction welding, friction stir welding, laser welding or resistance welding.
4. A method of making a squirrel cage for a rotor of an electric motor as claimed in claim 3, wherein: in the step (5), in order to ensure the reliability of the end ring combination after welding, the outer edge of the end ring II is provided with an outer flange, the inner edge of the end ring II is provided with an inner flange, and the inner flange and the outer flange are suitable for assembling with the inner ring surface and the outer ring surface of the end ring I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110892268.0A CN113556011B (en) | 2021-08-04 | 2021-08-04 | Method for manufacturing squirrel cage of motor rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110892268.0A CN113556011B (en) | 2021-08-04 | 2021-08-04 | Method for manufacturing squirrel cage of motor rotor |
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| CN113556011A true CN113556011A (en) | 2021-10-26 |
| CN113556011B CN113556011B (en) | 2022-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022211316A1 (en) | 2022-10-25 | 2024-04-25 | Volkswagen Aktiengesellschaft | Rotor of an electrical machine and method for its manufacture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626179A (en) * | 2008-07-09 | 2010-01-13 | 通用汽车环球科技运作公司 | Squirrel-cage rotors and methods of manufacturing same |
| CN105896777A (en) * | 2016-06-29 | 2016-08-24 | 成都中车电机有限公司 | Cage rotor assembly structure and method |
| CN209046386U (en) * | 2018-11-02 | 2019-06-28 | 德威(苏州)新能源有限公司 | A kind of efficient squirrel-cage motor rotor |
| CN212114922U (en) * | 2019-12-22 | 2020-12-08 | 无锡东元电机有限公司 | Squirrel-cage welding aluminum rotor |
-
2021
- 2021-08-04 CN CN202110892268.0A patent/CN113556011B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626179A (en) * | 2008-07-09 | 2010-01-13 | 通用汽车环球科技运作公司 | Squirrel-cage rotors and methods of manufacturing same |
| CN105896777A (en) * | 2016-06-29 | 2016-08-24 | 成都中车电机有限公司 | Cage rotor assembly structure and method |
| CN209046386U (en) * | 2018-11-02 | 2019-06-28 | 德威(苏州)新能源有限公司 | A kind of efficient squirrel-cage motor rotor |
| CN212114922U (en) * | 2019-12-22 | 2020-12-08 | 无锡东元电机有限公司 | Squirrel-cage welding aluminum rotor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022211316A1 (en) | 2022-10-25 | 2024-04-25 | Volkswagen Aktiengesellschaft | Rotor of an electrical machine and method for its manufacture |
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| CN113556011B (en) | 2022-05-24 |
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