CN110266158B - Assembling process of brushless motor - Google Patents
Assembling process of brushless motor Download PDFInfo
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- CN110266158B CN110266158B CN201910659386.XA CN201910659386A CN110266158B CN 110266158 B CN110266158 B CN 110266158B CN 201910659386 A CN201910659386 A CN 201910659386A CN 110266158 B CN110266158 B CN 110266158B
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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
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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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
- H02K15/028—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots for fastening to casing or support, respectively to shaft or hub
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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
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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
- H02K15/16—Centering rotors within the stator; Balancing rotors
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to an assembly process. The assembly process of a brushless motor, the first step, assemble the rotor assembly, wherein the assembly of the rotor assembly includes the assembly of the end cap assembly and assembly of the rotor with magnetic steel; secondly, assembling a stator assembly, wherein in the process of installing the stator, the shell is heated and expanded, and then the stator assembly is placed; thirdly, mounting the rotor assembly into the stator assembly; and fourthly, assembling the induction magnetic steel to the rotor shaft. The invention provides the assembly process of the brushless motor, which can effectively ensure the stability of the brushless motor, has good consistency of motor performance and small variation; the technical problems that the rotor of the brushless motor in the prior art moves up and down in the assembling process, the concentricity of the stator assembly and the rotor assembly is poor, the performance of the motor is poor in consistency, the stability is poor, and the variation is large are solved.
Description
Technical Field
The invention relates to an assembly process, in particular to an assembly process of a brushless motor.
Background
In modern society, brushless motors have been widely used, and basically, brushless motors are composed of a housing, a stator assembly, and a rotor assembly. The stator assembly is installed within the housing and then mated with the stator assembly. During assembly, the installation of the various components can affect the performance of the final brushless motor. However, in the existing installation process, the rotor can move up and down in the rotor assembly; during the installation of the stator assembly, the wire drawing burrs on the inner side of the shell deform; in stator module and rotor subassembly installation, stator module and rotor subassembly's concentricity can not guarantee, and above problem all can finally lead to brushless motor's performance to go wrong, poor stability, the variation is big etc..
Disclosure of Invention
The invention provides the assembly process of the brushless motor, which can effectively ensure the stability of the brushless motor, has good consistency of motor performance and small variation; the technical problems that the rotor of the brushless motor in the prior art moves up and down in the assembling process, the concentricity of the stator assembly and the rotor assembly is poor, the performance of the motor is poor in consistency, the stability is poor, and the variation is large are solved.
The technical problem of the invention is solved by the following technical scheme:
the assembly process of a brushless motor, the first step, assemble the rotor assembly, wherein the assembly of the rotor assembly includes the assembly of the end cap assembly and assembly of the rotor with magnetic steel;
the end cover assembly comprises an end cover, an upper bearing is installed on the end cover, the rotor comprises a rotor shaft, a rotor magnetic ring is sleeved on the rotor shaft, the rotor magnetic ring is magnetized, and then a lower bearing is installed on the rotor shaft;
the assembled rotor is matched with the end cover assembly, the end cover assembly is placed on an upper tool and the rotor is placed on a lower tool in the assembling process, the upper end face and the lower end face of an upper bearing are respectively used as positioning reference faces for mounting the end cover assembly and the rotor, then the upper tool and the lower tool are operated to assemble, a rotor shaft is connected in the upper bearing in a penetrating mode, and the dimensional tolerance is guaranteed to be controlled within +/-0.05 mm;
secondly, assembling a stator assembly, wherein the stator assembly assembling comprises assembling the upper framework, the lower framework and the iron core, winding to form the stator assembly, then installing the stator assembly into the shell, heating and expanding the shell firstly in the process of installing the stator, and then putting the stator assembly into the shell;
thirdly, the rotor assembly is installed in the stator assembly, in the assembling process, a concentricity shaft extends out from the inner side of the stator to pre-prop against the shaft end part of the rotor shaft, then the rotor is pressed down, and the concentricity shaft moves downwards at the same time, so that the rotor is smoothly assembled into the stator under the guidance of the concentricity shaft, and the concentricity of the rotor assembly and the stator assembly is ensured;
and fourthly, assembling the induction magnetic steel to the rotor shaft.
When the end cover assembly and the rotor are installed, the upper tool and the lower tool share one reference surface, accumulated tolerance during assembly is eliminated, the end cover assembly is pressed down by using a servo press, the size from the upper end surface of the rotor shaft to the upper end surface of the end cover is ensured to be 2.5mm by controlling the size, and the size is precisely controlled, so that the play gap of the rotor assembly in the motor is reduced, and the motor is stable in performance, good in consistency and stable in service life.
When the stator assembly is installed in the shell, after the shell is heated and expanded by induction, the stator falls into the shell freely, and interference assembly is formed after cooling. The deformation of the wire drawing burrs on the inner side of the shell and the like can be caused when the interference press fitting is carried out between the shells of the stator assembly of the brushless motor, and the stator assembly can also be deformed to a certain extent to cause the unstable and inconsistent performance of the motor. Thereby ensuring no deformation and strain in the assembling process, generating deformation defective products and the like.
In the assembling process of stator module and rotor subassembly, increase the direction of predetermined axle, guarantee that the rotor subassembly can assemble into stator module smoothly, simultaneously, rotor bearing also can not be damaged by the bruise, guarantees not to produce the oil leak problem, but also can guarantee that the concentricity is at very little within range (0.1 mm Max).
Preferably, in the first step of assembly, when the rotor magnetic ring is magnetized, the anti-magnetization isolation sleeve is sleeved on the rotating shaft, and then the lower bearing is sleeved on the rotor shaft. Cup joint the red copper cover as isolated cover on the rotor shaft, can prevent effectively that the rotor shaft from magnetizing, like this when subsequent installation wave spring, can not adsorbed by the rotor shaft, can assemble into the stator smoothly, the rotor shaft can not adsorb metal piece yet simultaneously and lead to motor or pump to block up jamming etc. need not increase extra clean process, reduce cost.
Preferably, in the second step, after the stator is installed in the housing, the oil seal and the wave spring are installed.
Preferably, in the assembling process of the fourth step, the end face of the motor shell is pre-pressed, the concentricity shaft is used for propping against the lower end of the rotor shaft, then the distance from the upper end face of the rotor shaft to the upper end face of the motor shell is tested, and the pressing stroke of the servo press is calculated according to the required distance value from the induction magnet to the end face of the motor shell, so that the designated stroke of the pressing of the servo press is shared by a reference surface, the problem of size tolerance accumulation in the assembling process is solved, and precise size control is achieved. The dimensional tolerance from the end face of the induction magnet to the end face of the motor shell is 2+/-0.1mm, the accuracy control is realized within +/-0.05mm, and the free accumulated tolerance is small. The position consistency of the induction magnet is good, the position signal consistency of the motor is good, the performance uniformity of the motor is good, and the service life is stable.
Therefore, the assembly process of the brushless motor has the following advantages: in the process of installing each component, the play of the rotor shaft is effectively avoided, the stator component and the rotor component are installed smoothly, the shell cannot be scratched, the oil leakage problem cannot be caused, the concentricity of the rotor component and the stator component is good, the performance of the motor is stable, the defective rate is low, the service life is stable, and the consistency is good.
Drawings
FIG. 1 is a perspective view of the end cap assembly of the present invention.
Fig. 2 is a perspective view of a rotor assembly of the present invention.
Fig. 3 is a perspective view of the stator assembly of the present invention after installation.
Fig. 4 is a perspective view of the brushless motor of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
as shown in fig. 1, 2, 3 and 4, in an assembly process of a brushless motor, a rotor assembly is assembled in a first step, wherein the assembly of the rotor assembly comprises the assembly of an end cover assembly and the assembly of a rotor with magnetic steel; the end cover assembly comprises an end cover 1, an upper bearing 2 is installed on the end cover 1, the rotor comprises a rotor shaft 3, a rotor magnetic ring 4 is sleeved on the rotor shaft 3 firstly, the rotor magnetic ring 4 is magnetized, when the rotor magnetic ring 4 is magnetized, an anti-magnetized red copper sleeve is sleeved on the rotating shaft firstly, and then a lower bearing 5 is sleeved on the rotor shaft 3.
The assembled rotor is matched with the end cover assembly, the end cover assembly is placed on an upper tool and the rotor is placed on a lower tool in the assembling process, the upper end face and the lower end face of an upper bearing are respectively used as positioning reference faces for mounting the end cover assembly and the rotor, then the upper tool and the lower tool are operated to assemble, a rotor shaft is connected in the upper bearing in a penetrating mode, and the dimensional tolerance is guaranteed to be controlled within +/-0.05 mm;
and secondly, assembling a stator assembly, wherein the stator assembly comprises the steps of firstly assembling the upper framework, the lower framework and the iron core, then winding to form the stator assembly 7, then installing the stator assembly into the shell 6, firstly heating and expanding the shell in the process of installing the stator, then putting the stator assembly 7 into the shell, and then installing the oil seal and the wave spring after installing the stator into the shell.
And thirdly, mounting the rotor assembly into the stator assembly, firstly extending a concentricity shaft from the inner side of the stator to pre-prop against the shaft end part of the rotor shaft 3 in the assembling process, then pressing down the rotor while moving the concentricity shaft downwards, thus smoothly assembling the rotor into the stator under the guidance of the concentricity shaft and ensuring the concentricity of the rotor assembly and the stator assembly. And after the rotor assembly is installed in the fixed assembly, the rotor assembly is screwed and fixed by using screws.
And fourthly, assembling the induction magnetic steel 8 to the rotor shaft, pre-pressing the end face of the motor shell, then using the concentricity shaft to prop the lower end of the rotor shaft, then testing the distance from the upper end face of the rotor shaft to the upper end face of the motor shell, and calculating the pressing stroke of the servo press according to the distance value required from the induction magnetic steel to the end face of the motor shell, so that the designated stroke of the servo press is pressed down to share a reference surface, the problem of size tolerance accumulation in the assembling process is eliminated, and the precise size control is achieved.
Claims (4)
1. The assembly process of the brushless motor is characterized in that:
the method comprises the following steps of firstly, assembling a rotor assembly, wherein the assembly of the rotor assembly comprises the assembly of an end cover assembly and the assembly of a rotor with magnetic steel;
the end cover assembly comprises an end cover, an upper bearing is installed on the end cover, the rotor comprises a rotor shaft, a rotor magnetic ring is sleeved on the rotor shaft, the rotor magnetic ring is magnetized, and then a lower bearing is installed on the rotor shaft;
the assembled rotor is matched with the end cover assembly, the end cover assembly is placed on an upper tool and the rotor is placed on a lower tool in the assembling process, the upper end face and the lower end face of an upper bearing are respectively used as positioning reference faces for mounting the end cover assembly and the rotor, then the upper tool and the lower tool are operated to assemble, a rotor shaft is connected in the upper bearing in a penetrating mode, and the dimensional tolerance is guaranteed to be controlled within +/-0.05 mm;
secondly, assembling a stator assembly, wherein the stator assembly assembling comprises assembling the upper framework, the lower framework and the iron core, winding to form the stator assembly, then installing the stator assembly into the shell, heating and expanding the shell firstly in the process of installing the stator, and then putting the stator assembly into the shell;
thirdly, the rotor assembly is installed in the stator assembly, in the assembling process, a concentricity shaft extends out from the inner side of the stator to pre-prop against the shaft end part of the rotor shaft, then the rotor is pressed down, and the concentricity shaft moves downwards at the same time, so that the rotor is smoothly assembled into the stator under the guidance of the concentricity shaft, and the concentricity of the rotor assembly and the stator assembly is ensured;
and fourthly, assembling the induction magnetic steel to the rotor shaft.
2. An assembly process of a brushless motor according to claim 1, characterized in that: in the first step of assembly process, when magnetizing the rotor magnetic ring, firstly the rotating shaft is sleeved with the antimagnetic isolation sleeve, and then the rotor shaft is sleeved with the lower bearing.
3. An assembling process of a brushless motor according to claim 1 or 2, characterized in that: in the second step, after the stator is installed in the shell, the oil seal and the wave spring are installed.
4. An assembling process of a brushless motor according to claim 1 or 2, characterized in that: in the assembling procedure of the fourth step, the end face of the motor shell is pre-pressed, the lower end of the rotor shaft is jacked by the concentricity shaft, the distance from the upper end face of the rotor shaft to the upper end face of the motor shell is tested, and the downward pressing stroke of the servo press is calculated according to the required distance value from the induction magnet to the end face of the motor shell, so that the designated stroke of downward pressing of the servo press is shared by a reference surface, the problem of size tolerance accumulation in the assembling process is solved, and precise size control is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659386.XA CN110266158B (en) | 2019-07-22 | 2019-07-22 | Assembling process of brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659386.XA CN110266158B (en) | 2019-07-22 | 2019-07-22 | Assembling process of brushless motor |
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| Publication Number | Publication Date |
|---|---|
| CN110266158A CN110266158A (en) | 2019-09-20 |
| CN110266158B true CN110266158B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910659386.XA Active CN110266158B (en) | 2019-07-22 | 2019-07-22 | Assembling process of brushless motor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203967917U (en) * | 2014-06-19 | 2014-11-26 | 西安盾安电气有限公司 | The horizontal assembling device of a kind of magneto |
| CN105099041A (en) * | 2014-04-22 | 2015-11-25 | 德昌电机(深圳)有限公司 | Brushless motor, external rotor of brushless motor and manufacture method of external rotor |
| CN106712413A (en) * | 2015-07-17 | 2017-05-24 | 胡永健 | Motor bearing mounting method and motor |
| CN107276344A (en) * | 2016-04-05 | 2017-10-20 | 东芝产业机器***株式会社 | The manufacture device of electric rotating machine and the manufacture method of electric rotating machine |
-
2019
- 2019-07-22 CN CN201910659386.XA patent/CN110266158B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099041A (en) * | 2014-04-22 | 2015-11-25 | 德昌电机(深圳)有限公司 | Brushless motor, external rotor of brushless motor and manufacture method of external rotor |
| CN203967917U (en) * | 2014-06-19 | 2014-11-26 | 西安盾安电气有限公司 | The horizontal assembling device of a kind of magneto |
| CN106712413A (en) * | 2015-07-17 | 2017-05-24 | 胡永健 | Motor bearing mounting method and motor |
| CN107276344A (en) * | 2016-04-05 | 2017-10-20 | 东芝产业机器***株式会社 | The manufacture device of electric rotating machine and the manufacture method of electric rotating machine |
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| Publication number | Publication date |
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| CN110266158A (en) | 2019-09-20 |
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Address after: 335200 glasses Industrial Park, Yujiang County, Yingtan City, Jiangxi Province Patentee after: Jiangxi Woder Technology Co.,Ltd. Address before: 335200 glasses Industrial Park, Yujiang County, Yingtan City, Jiangxi Province Patentee before: Jiangxi Warder Technology Co.,Ltd. |