CN113949234B - Motor stator assembling method - Google Patents
Motor stator assembling method Download PDFInfo
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- CN113949234B CN113949234B CN202111048900.XA CN202111048900A CN113949234B CN 113949234 B CN113949234 B CN 113949234B CN 202111048900 A CN202111048900 A CN 202111048900A CN 113949234 B CN113949234 B CN 113949234B
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- stator
- positioning end
- box body
- hole
- centering rod
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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
Abstract
The invention discloses a motor stator assembling method, belongs to the technical field of motor assembling, and solves the technical problem that the existing stator assembling method is low in precision. The method comprises the following steps: horizontally erecting the box body on an assembly platform; providing a centering rod, wherein the axis of the centering rod is vertical to the assembly platform, the centering rod is provided with a first positioning end and a second positioning end which are coaxial, the first positioning end of the provided centering rod is assembled to a bearing hole of the box body, and the first positioning end is positioned below the second positioning end; hoisting a stator, sleeving the stator on the second positioning end, and supporting the stator through a box body; aligning the threaded through hole of the stator with the corresponding threaded hole of the box body; assembling the stator in the case; and pulling out the centering rod to complete the installation of the stator in the box body. The stator assembling method has the advantages of high positioning precision and small installation error.
Description
Technical Field
The invention belongs to the technical field of motor assembly, and particularly relates to a motor stator assembly method.
Background
The hybrid power box is composed of a box body, a motor and a gear system, and a motor stator is generally fixed on the box body through bolts. The existing stator assembling method is generally to match positioning pins on a box body with positioning pin holes on a stator for positioning, and finally fasten with bolts to complete the assembly of the motor stator and the box body, as shown in fig. 1. And position manufacturing deviation exists between the bearing hole on the box body and the positioning pin hole on the box body, and position manufacturing deviation also exists between the positioning pin hole on the stator and the inner ring of the stator. The two deviations are accumulated to the position degree of the assembled stator inner ring and the box body bearing hole, the stator assembling precision is low, the air gap unevenness between the motor rotor and the stator is increased, and the motor noise is increased.
Disclosure of Invention
The motor stator assembling method at least aims to solve the technical problem that the existing stator assembling method is low in precision to a certain extent, and therefore the motor stator assembling method is provided.
A method of assembling a stator of an electric machine comprising:
horizontally erecting a box body on an assembly platform, wherein a support table is arranged on the assembly platform, the top surface of the support table is horizontal, the thickness of the support table is smaller than the distance between the box body and the assembly platform, and a groove is formed in the top surface of the support table;
providing a centering rod, wherein the axis of the centering rod is perpendicular to the assembly platform, the centering rod is provided with a first positioning end and a second positioning end which are coaxial, the outer diameter of the second positioning end is matched with the diameter of a stator inner ring to be assembled, the outer diameter of the first positioning end is matched with the inner diameter of a bearing hole of the box body, the end face of the first positioning end is provided with a convex block, the end face area of the convex block is smaller than that of the end face of the first positioning end, when the provided first positioning end of the centering rod is assembled into the bearing hole of the box body, the first positioning end is positioned below the second positioning end, the convex block is inserted into the groove, and the end face of the first positioning end is in contact with the top surface of the supporting table
Hoisting the stator, wherein the stator is sleeved on the second positioning end and is supported by the box body;
aligning the threaded through hole of the stator with the corresponding threaded hole of the box body;
assembling the stator in a case;
and pulling out the centering rod to complete the assembly and installation of the stator in the box body.
In some embodiments, the projection is disposed in the middle of the first positioning end surface of the centering rod, and the projection can be engaged with the groove.
In some embodiments, the ends of the centering bars are each provided with a chamfer.
In some embodiments, the first locating end and the second locating end are both cylindrical.
In some embodiments, the outer annular surface of the first locating end is provided with a through groove along the length direction of the centering rod, and the outer annular surface of the second locating end is also provided with a through groove along the length direction of the centering rod.
In some embodiments, the alignment of the threaded through holes of the stator with the corresponding threaded holes of the casing is done before the stator is supported by the casing.
In some embodiments, at least one guide bar is provided, the guide bar having a length greater than that of the stator, and a flange is provided at a top end of the guide bar so that the guide bar can be mounted on the stator after the guide bar is inserted into the threaded through-hole.
In some embodiments, the stator is assembled in a case using a bolt, the guide bar has a diameter greater than a diameter of a bottom end of the bolt, and the guide bar has a diameter not greater than an inner diameter of the threaded through hole.
The embodiment of the application has at least the following beneficial effects:
according to the technical scheme, the stator assembly method disclosed by the invention has the advantages that the positions of the box body and the stator are relatively fixed through the matching of the centering rod and the bearing hole, the size of the centering rod is unique, the centering rod is moved out after the bolt is fixedly connected with the box body, the influence of the machining precision of the threaded through hole on the stator assembly is small, the error caused by the movement of the stator due to the installation of the bolt can be avoided, the positioning precision is ensured, the air gap unevenness between the motor rotor and the stator is low, and the motor noise can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a prior art stator mounting arrangement of the background of the present application;
FIG. 2 is a schematic flow chart illustrating a stator assembly method according to an embodiment of the present application;
FIG. 3 is a schematic view showing a stator assembling structure in the embodiment of the present application;
the labels in the figure are: 1-assembly platform, 2-support column, 3-support table, 301-groove, 4-box, 401-support boss, 5-stator, 6-bolt, 701-first positioning end, 702-second positioning end and 703-lug.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
The application is described below with reference to specific embodiments in conjunction with the following drawings:
FIG. 2 is a schematic flow chart illustrating a stator assembly method according to an embodiment of the present application; fig. 3 shows a schematic view of the stator assembly structure in the embodiment of the present application.
As shown in fig. 2 and 3, the present embodiment provides a motor stator assembling method, including the steps of:
step 1: the box body 4 is horizontally erected on the assembly platform 1.
Referring to fig. 3, the top surface of the assembly platform 1 is provided with a plurality of support columns 2, and the tops of the support columns 2 are located at the same height, so that the bottom surface of the box 4 erected on the assembly platform 1 is horizontal.
Step 2: providing a centering rod, wherein the axis of the centering rod is perpendicular to the assembly platform 1, the centering rod is provided with a first positioning end 701 and a second positioning end 702 which are coaxial, the outer diameter of the first positioning end 701 is matched with the inner diameter of the bearing hole, the outer diameter of the second positioning end 702 is matched with the diameter of the inner ring of the stator 5 to be assembled, the first positioning end 701 of the provided centering rod is assembled to the bearing hole of the box body 4, and the first positioning end 701 is positioned below the second positioning end 702.
And step 3: hoisting the stator 5, sleeving the stator 5 on the second positioning end 702, and supporting the stator 5 through the box body 4.
Compared with the existing assembly method, the positioning pin is not used as the positioning standard any more, the centering rod is used as the unique positioning standard, the size of the centering rod is unique, and when the positioning pin is used for mounting a plurality of stators 5, the influence on the positioning of the stators 5 caused by the position manufacturing deviation between the positioning pin hole in the stator 5 and the inner ring of the stator 5 and the position manufacturing deviation between the bearing hole in the box body 4 and the positioning pin hole in the box body 4 can be reduced. And then make the installation error between stator 5 and the box 4 little, the installation accuracy is high, and the air gap unevenness between motor rotor and the stator 5 is low, can effectively reduce motor noise.
And 4, step 4: aligning the threaded through hole of the stator 5 with the corresponding threaded hole of the box body 4;
set up the screw hole on box 4 to corresponding position on stator 5 sets up the screw through-hole, through the screw through-hole of alignment stator 5 with the corresponding screw hole of box 4, further fixes a position stator 5, so that stator 5 can install on box 4 according to predetermined position.
And 5: the stator 5 is fitted in the case 4.
The stator 5 can be installed in the box 4 through the threaded through hole and the threaded hole by the bolt 6, and also installed in the box 4 by a hot-fitting method by providing a ring in the box, so that an operator can select a proper mode for fixedly installing the stator 5 on the box 4 according to the situation.
And 6: the centering rod is pulled out, and the stator 5 is installed in the box body 4.
The operation sequence of extracting the centering rod after fixing the stator 5 to the case 4 can greatly reduce the error caused by the movement of the stator 5 during the installation.
As a more preferred embodiment, the bolt 6 can be directly adopted to fix the stator 5 and the box body 4, the inner diameter of the threaded through hole is the same as the inner diameter of the internal threaded hole, the outer diameter of the bolt 6 is slightly larger than the inner diameter of the threaded through hole, a chamfer is machined at the bottom end of the bolt 6, the bolt 6 is used for connecting the threaded through hole and the internal threaded hole under the condition that the centering rod limits the bearing holes of the stator 5 and the box body 4, the axial deviation of the internal threaded hole and the threaded through hole can be eliminated, the installation accuracy of the stator 5 is not affected by the threaded through hole and the internal threaded hole, and the installation accuracy of the stator 5 is further improved.
Further, be equipped with in the box 4 and support boss 401, support boss 401 is the ring column shape, and supports boss 401 and the coaxial setting of dead eye, and the screw hole setting of box 4 is on supporting boss 401 to avoid the thin but connection of bolt 6 of box 4 lateral wall to reduce.
In step 2: in this step of inserting the dead man's one end in the dead man's of box 4, still be equipped with brace table 3 on assembly platform 1, 3 top surfaces of brace table and dead man contact, 3 top surfaces of brace table level, and the thickness of brace table 3 is less than the interval between box 4 and the assembly platform 1. In order to guarantee the location precision of centering stick, the centering stick can be for solid, then the weight of centering stick is big, and the security performance during hoist and mount descends, through setting up brace table 3, under the circumstances of guaranteeing centering stick location precision, can shorten the length of centering stick, and then reduce the weight of centering stick, the hoist and mount of the centering stick of being convenient for, security performance when correspondingly promoting hoist and mount centering stick. Simultaneously, the centering stick is installed in the downthehole back of bearing, and the terminal surface of the first location end 701 of centering stick contacts with brace table 3, and brace table 3's top surface area is little, compares in assembly platform 1 top surface and changes the clearance, and the 3 top surfaces of brace table are miscellaneous, and the centering stick is difficult for receiving the influence of the foreign particles in the workshop and the condition of breakage or bottom surface unevenness appears, and then the centering stick can keep good precision in long-time use.
When the centering rod is stored after being used, in order not to influence the shape of the ring surface of the first positioning end 701 and the ring surface of the second positioning end 702, further, a convex block 703 is further arranged on the end surface of the first positioning end 701, the area of the end surface of the convex block 703 is smaller than that of the end surface of the first positioning end 701, a groove 301 is formed in the top surface of the supporting table 3, and the convex block 703 can be inserted into the groove 301 so that the end surface of the first positioning end 701 is in contact with the top surface of the supporting table 3. In the storage process, the centering rod is in contact with the ground through the bump 703, but the end face of the first positioning end 701 around the bump 703 is not in contact with the ground, that is, the end face of the first positioning end 701 is not easy to deform, and the positioning accuracy of the centering rod is not affected.
As a more preferable embodiment, referring to fig. 3, the protrusion 703 is disposed in the middle of the end surface of the first positioning end 701 of the centering rod, so that the contact surface between the centering rod and the supporting base 3 is annular, which is beneficial to keeping the centering rod stable when being placed. The lug 703 and the recess gomphosis to make have the effect of leading direction between lug 703 and the recess, when the centering stick when hoist and mount, the accessible aligns lug 703 and recess in advance and the gomphosis, so that the centering stick can insert the dead eye smoothly, reduces to collide with, and the tip of centering stick all is equipped with the chamfer, makes the dead eye can aim at smoothly to the centering stick.
The first positioning end 701 and the second positioning end 702 of the centering rod are both cylindrical, a through groove is formed in the outer ring surface of the first positioning end 701 in the length direction of the centering rod, a through groove is also formed in the outer ring surface of the second positioning end 702 in the length direction of the centering rod, and the through groove can prevent the centering rod from being drawn out inconveniently due to negative pressure between the centering rod and the stator 5.
When installing stator 5, be equipped with a plurality of screw thread through-holes on stator 5, increase the inseparability of being connected between stator 5 and the box 4 through a plurality of bolts 6, as more preferred embodiment, in hoist and mount stator 5 step, in this embodiment, provide at least one guide bar, the guide bar is the column, and the length of guide bar is greater than the length of stator 5, and the top of guide bar is provided with the flange to make the guide bar can erect on stator 5. After the stator 5 is seated on the supporting boss 401 of the box 4, the guide rod is inserted into the threaded through hole of the motor stator 5, and through judging the height of the guide rod exceeding the top surface of the stator 5, whether the threaded through hole of the stator 5 is aligned with the internal threaded hole of the supporting boss 401 is judged, when the alignment is performed, the bottom end of the guide rod is located in the internal threaded hole, if the alignment is not performed, the stator 5 is rotated until the bottom end of the guide rod can fall into the internal threaded hole under the condition that external force is not applied. Considering that the weight of the stator 5 is large, the bottom surface of the stator 5 contacts with the top surface of the supporting boss 401 and then rotates, and a large friction force exists between the stator 5 and the supporting boss 401, so that the stator 5 is not convenient to rotate, therefore, in the embodiment, the guide rod can be placed into the threaded through hole before the stator 5 is seated on the supporting boss 401, when the stator 5 is hoisted, the stator 5 is rotated to enable the bottom end of the guide rod to be located above the internal threaded hole, the stator 5 slowly falls down, the guide rod is inserted into the internal threaded hole, the alignment between the threaded through hole of the stator 5 and the internal threaded hole of the supporting boss 401 is completed, the stator 5 continuously falls down until the bottom end of the stator 5 is horizontally seated on the supporting boss 401 of the stator 5 of the box 4, the positioning is accurate, and the operation is convenient.
Insert two at least guide bars in the screw thread through-hole, through the multiple spot location, promote the accuracy of 6 installations of bolt.
Furthermore, in order to accurately position the guide rod, in this embodiment, the diameter of the guide rod is greater than the diameter of the bottom end of the bolt 6, so that after the threaded through hole and the internal threaded hole are positioned, the diameter between the threaded through hole and the internal threaded hole is enough for the bottom end of the bolt 6 to enter the internal threaded hole; the diameter of guide rod is not more than the internal diameter of screw thread through-hole to after the location was accomplished, the guide rod can be taken out smoothly.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A method of assembling a stator of an electric machine, comprising:
horizontally erecting a box body on an assembly platform, wherein a support table is arranged on the assembly platform, the top surface of the support table is horizontal, the thickness of the support table is smaller than the distance between the box body and the assembly platform, and a groove is formed in the top surface of the support table;
providing a centering rod, wherein the axis of the centering rod is vertical to the assembly platform, the centering rod is provided with a first positioning end and a second positioning end which are coaxial, the outer diameter of the second positioning end is matched with the diameter of a stator inner ring to be assembled, the outer diameter of the first positioning end is matched with the inner diameter of a bearing hole of the box body, the end face of the first positioning end is provided with a convex block, the area of the end face of the convex block is smaller than that of the end face of the first positioning end, when the provided first positioning end of the centering rod is assembled in the bearing hole of the box body, the first positioning end is positioned below the second positioning end, the convex block is inserted into the groove, and the end face of the first positioning end is contacted with the top surface of the support table;
hoisting the stator, wherein the stator is sleeved on the second positioning end and is supported by the box body;
aligning the threaded through hole of the stator with the corresponding threaded hole of the box body;
assembling the stator in a case;
and pulling out the centering rod to finish the installation of the stator in the box body.
2. An assembling method of a stator of an electric machine according to claim 1, wherein the projection is provided at a central portion of the end surface of the first positioning end of the centering rod, and the projection is engaged with the groove.
3. The motor stator assembling method of claim 1, wherein the ends of the centering bars are each provided with a chamfer.
4. The method of assembling a stator of an electric machine of claim 1, wherein the first and second locator ends are each cylindrical.
5. The method of assembling a stator of an electric motor according to claim 4, wherein the outer circumferential surface of the first positioning end is provided with a through groove along the longitudinal direction of the centering rod, and the outer circumferential surface of the second positioning end is also provided with a through groove along the longitudinal direction of the centering rod.
6. The motor stator assembling method according to claim 1, wherein the alignment of the screw through hole of the stator and the corresponding screw hole of the case is completed before the stator is supported by the case.
7. The motor stator assembling method according to claim 6, wherein at least one guide bar is provided, the length of the guide bar is greater than that of the stator, and a flange is provided at the top end of the guide bar so that the guide bar can be mounted on the stator after the guide bar is inserted into the threaded through hole.
8. The motor stator assembling method according to claim 7, wherein the stator is assembled in a case using a bolt, the guide rod has a diameter larger than a diameter of a bottom end of the bolt, and the guide rod has a diameter not larger than an inner diameter of the threaded through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048900.XA CN113949234B (en) | 2021-09-08 | 2021-09-08 | Motor stator assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048900.XA CN113949234B (en) | 2021-09-08 | 2021-09-08 | Motor stator assembling method |
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| CN113949234A CN113949234A (en) | 2022-01-18 |
| CN113949234B true CN113949234B (en) | 2023-03-24 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007221855A (en) * | 2006-02-14 | 2007-08-30 | Toyota Motor Corp | Fixing structure of stator, manufacturing method of rotary electric machine, and electric vehicle |
| JP4992527B2 (en) * | 2007-04-18 | 2012-08-08 | アイシン・エィ・ダブリュ株式会社 | Stator assembly apparatus and stator assembly method |
| CN103401379B (en) * | 2013-07-31 | 2015-09-23 | 东方电气（乐山）新能源设备有限公司 | A kind of easy stator has winding iron core to take a seat guide frame |
| CN209516877U (en) * | 2019-02-21 | 2019-10-18 | 齐重数控装备股份有限公司 | It is a kind of large size torque motor installation use guiding and centering device |
| CN210578165U (en) * | 2019-08-12 | 2020-05-19 | 南京越博电驱动系统有限公司 | Stator hot jacket frock of motor |
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