CN114337030A - Stepping motor rotor and manufacturing method thereof - Google Patents
Stepping motor rotor and manufacturing method thereof Download PDFInfo
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- CN114337030A CN114337030A CN202210101900.XA CN202210101900A CN114337030A CN 114337030 A CN114337030 A CN 114337030A CN 202210101900 A CN202210101900 A CN 202210101900A CN 114337030 A CN114337030 A CN 114337030A
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- iron core
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- rotor iron
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Abstract
The invention relates to a stepping motor rotor and a manufacturing method thereof, and the stepping motor rotor comprises a rotating shaft, magnetic steel, a front rotor iron core component and a rear rotor iron core component, wherein the rotating shaft sequentially penetrates through the front rotor iron core component, the magnetic steel and the rear rotor iron core component; the rear rotor core assembly comprises a second rear rotor core, a rear elastic body assembly and a rear cover plate, and the rear elastic body assembly is placed in a cavity of the second rear rotor core and is packaged through the rear cover plate; the rotating shaft penetrates through the front cover plate and the rear cover plate in an interference mode. Compared with the prior art, the invention has the advantages of greatly reducing the production difficulty of the vibration reduction rotor core, reducing the production and manufacturing cost of the motor and the like.
Description
Technical Field
The invention relates to a motor, in particular to a stepping motor rotor and a manufacturing method thereof.
Background
As shown in fig. 1-3, a motor rotor 1 according to the first prior art includes a first front rotor core 3, a first rear rotor core 4, a magnetic steel 5 located in the middle of the rotor cores, and a rotating shaft 2 penetrating through the rotor cores and the magnetic steel, where the first front rotor core 3 and the first rear rotor core 4 are formed by pressing the same rotor punching sheets , and the first front rotor core 3 and the first rear rotor core 4 are radially staggered by a certain angle.
As shown in fig. 4-6, the motor rotor 6 of the second conventional solution includes a second front rotor core 7, a second rear rotor core 8, a magnetic steel 5 located in the middle of the rotor cores, and a rotating shaft 2 penetrating through the rotor cores and the magnetic steel, where the second front rotor core 7 and the second rear rotor core 8 are formed by pressing rotor punching sheets with different inner diameters, the rotor punching sheet with a smaller inner diameter is tightly attached to the magnetic steel, and the second front rotor core 7 and the second rear rotor core 8 are radially staggered by a certain angle.
However, the conventional rotor core has a solid or open structure, and thus, any component cannot be placed inside the rotor core, which results in a reduction in performance of the motor.
Disclosure of Invention
The present invention is directed to a rotor of a stepping motor and a method for manufacturing the same, which overcome the above-mentioned disadvantages of the prior art.
The purpose of the invention can be realized by the following technical scheme:
according to a first aspect of the present invention, there is provided a rotor of a stepping motor, comprising a rotating shaft, magnetic steel, a front rotor core assembly and a rear rotor core assembly, wherein the rotating shaft sequentially passes through the front rotor core assembly, the magnetic steel and the rear rotor core assembly, the front rotor core assembly comprises a second front rotor core, a front elastic body assembly and a front cover plate, and the front elastic body assembly is placed in a cavity of the second front rotor core and is encapsulated by the front cover plate; the rear rotor core assembly comprises a second rear rotor core, a rear elastic body assembly and a rear cover plate, and the rear elastic body assembly is placed in a cavity of the second rear rotor core and is packaged through the rear cover plate;
the rotating shaft penetrates through the front cover plate and the rear cover plate in an interference mode.
As an optimal technical scheme, the second front rotor core and the second rear rotor core are rotor cores formed by laminating two rotor punching sheets with different inner diameters.
As a preferable technical scheme, the front elastic body assembly comprises a front circular ring weight and a front elastic body, and the front circular ring weight is placed in the front elastic body.
As a preferred technical solution, the rear elastic body assembly includes a rear circular ring weight and a rear elastic body, and the rear circular ring weight is disposed in the rear elastic body.
As an optimal technical scheme, the magnetic steel is positioned between the second front rotor core and the second rear rotor core and is tightly attached to the rotor punching sheet on the side with the smaller inner diameter.
As a preferable technical scheme, a front shaft sleeve for preventing the front cover plate from moving is arranged on the outer side of the front cover plate, and a rear shaft sleeve for preventing the rear cover plate from moving is arranged on the outer side of the rear cover plate.
As a preferred technical scheme, the front shaft sleeve is in interference fit with the rotating shaft, and the rear shaft sleeve is in interference fit with the rotating shaft.
As a preferable technical scheme, the front shaft sleeve and the rear shaft sleeve are made of copper or aluminum materials.
According to a second aspect of the present invention, there is provided a manufacturing method for the rotor of the stepping motor, comprising the steps of:
101) pressing a second front rotor iron core at one side on the rotating shaft;
102) placing the front elastomer assembly;
103) pressing the front cover plate;
104) placing magnetic steel on one side of the small-inner-diameter rotor core;
105) pressing in a second rear rotor iron core on the other side to ensure that the small inner diameter rotor iron core is tightly attached to the magnetic steel, and staggering the front rotor iron core and the rear rotor iron core by a certain angle in the radial direction;
106) a rear elastomeric component disposed on the other side;
107) and pressing the other side rear cover plate.
According to a third aspect of the present invention, there is provided a manufacturing method for the rotor of the stepping motor, comprising the steps of:
201) pressing a second front rotor iron core at one side on the rotating shaft;
202) placing the front elastomer assembly;
203) pressing the front cover plate;
204) pressing the front shaft sleeve;
205) placing magnetic steel on one side of the small-inner-diameter rotor core;
206) pressing in a second rear rotor iron core on the other side to ensure that the small inner diameter rotor iron core is tightly attached to the magnetic steel, and staggering the front rotor iron core and the rear rotor iron core by a certain angle in the radial direction;
207) a rear elastomeric component disposed on the other side;
208) covering the other side rear cover plate;
209) and pressing the other side rear shaft sleeve.
Compared with the prior art, the invention has the following advantages:
1) according to the invention, a rotor assembly mode that the cover plate or the shaft sleeve is in interference with the shaft is adopted, so that the circular ring elastomer assembly can be simply added in the rotor core, the production difficulty of the vibration reduction rotor core is greatly reduced, and the production and manufacturing cost of the motor is reduced;
2) the invention adopts the interference fit mode of the shaft sleeve and the rotating shaft, further prevents the front and rear elastic body assemblies of the motor from being separated from the front and rear rotor core assemblies, and improves the performance of the motor.
Drawings
Fig. 1 is a schematic perspective view of a first rotor of a conventional hybrid stepping motor;
FIG. 2 is a schematic front view of a first conventional rotor of a hybrid stepping motor;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic perspective view of a rotor of a conventional hybrid stepping motor according to a second embodiment;
FIG. 5 is a schematic front view of a rotor of a conventional hybrid stepping motor;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
fig. 7 is a schematic perspective view of a rotor of a stepping motor according to embodiment 1 of the present invention;
fig. 8 is a schematic front view of a rotor of a stepping motor according to embodiment 1 of the present invention;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;
fig. 10 is an exploded view of a rotor of a stepping motor according to embodiment 1 of the present invention;
fig. 11 is a schematic perspective view of a rotor of a stepping motor according to embodiment 2 of the present invention;
fig. 12 is a schematic front view of a rotor of a stepping motor according to embodiment 2 of the present invention;
FIG. 13 is a cross-sectional view taken along line C-C of FIG. 12;
wherein 1 is the motor rotor of the first scheme, 2 is the rotating shaft, 3 is the first front rotor core, 4 is the first rear rotor core, 5 is the magnetic steel, 6 is the motor rotor of the second scheme, 7 is the second front rotor core, and 8 is the second rear rotor core;
wherein 9 is the motor rotor of embodiment 1 of the present invention, 10 is a front elastic body, 11 is a front circular ring weight, 12 is a rear elastic body, 13 is a rear circular ring weight, 14 is a front cover plate, 15 is a rear cover plate, 16 is a front elastic body assembly, 17 is a rear elastic body assembly, 18 is a front rotor core assembly, and 19 is a rear rotor core assembly;
20 is a motor rotor of embodiment 2 of the present invention, 21 is a front shaft sleeve, and 22 is a rear shaft sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Example 1
As shown in fig. 7-10, a rotor of a stepping motor comprises a rotating shaft 2, a magnetic steel 5, a front rotor core assembly 18 and a rear rotor core assembly 19, wherein the rotating shaft 2 sequentially penetrates through the front rotor core assembly 18, the magnetic steel 5 and the rear rotor core assembly 19, the front rotor core assembly 18 comprises a second front rotor core 7, a front elastic body assembly 16 and a front cover plate 14, and the front elastic body assembly 16 is placed in a cavity of the second front rotor core 7 and is encapsulated by the front cover plate 14; the rear rotor core assembly 19 comprises a second rear rotor core 8, a rear elastic body assembly 17 and a rear cover plate 15, and the rear elastic body assembly 17 is placed in a cavity of the second rear rotor core 8 and is packaged through the rear cover plate 15; the rotating shaft 2 penetrates through the front cover plate 14 and the rear cover plate 15 in an interference mode. The invention adopts the rotor assembly mode that the cover plate is in interference fit with the rotating shaft, can simply realize the increase of the annular elastomer assembly in the rotor core, greatly reduces the production difficulty of the vibration reduction rotor core, and reduces the production and manufacturing cost of the motor.
The use of the front cover plate 14 and the rear cover plate 15 is to prevent the front and rear elastic body assemblies of the motor from coming out of the front and rear rotor core assemblies.
And the second front rotor core 7 and the second rear rotor core 8 are rotor cores formed by laminating two rotor punching sheets with different inner diameters. The front elastic body assembly 16 comprises a front circular ring weight 11 and a front elastic body 10, wherein the front circular ring weight 11 is arranged in the front elastic body 10. The rear elastic body assembly 17 comprises a rear circular ring weight 13 and a rear elastic body 12, and the rear circular ring weight 13 is arranged in the rear elastic body 12. And the magnetic steel 5 is positioned between the second front rotor core 7 and the second rear rotor core 8 and is tightly attached to the rotor punching sheet on the side with the smaller inner diameter.
The method for manufacturing the rotor of the stepping motor in the embodiment specifically comprises the following steps:
101. a second front rotor iron core 7 at one side is pressed in the rotating shaft 2;
102. placing the front elastomeric component 16;
103. pressing in the front cover plate 14;
104. placing a magnetic steel 5 on one side of the small-inner-diameter rotor core;
105. pressing in a second rear rotor iron core 8 on the other side to ensure that the small inner diameter rotor iron core and the magnetic steel are tightly attached to 5, and staggering the front and rear rotor iron cores by a certain angle in the radial direction;
106. a rear elastomer member 17 placed on the other side;
107. the other side back cover 15 is pressed in.
Example 2
As shown in fig. 11-13, in order to prevent the cover plate from displacing during the operation of the motor, and the elastic body is pulled out of the rotor core, a front bushing 21 for preventing the front cover plate from displacing is arranged outside the front cover plate 14, and a rear bushing 22 for preventing the rear cover plate from displacing is arranged outside the rear cover plate 15.
The front shaft sleeve 21 is in interference fit with the rotating shaft 2, and the rear shaft sleeve 22 is in interference fit with the rotating shaft 2. The front shaft sleeve 21 and the rear shaft sleeve 22 are made of copper or aluminum materials.
The method for manufacturing the rotor of the stepping motor in the embodiment specifically comprises the following steps:
201. a second front rotor iron core 7 at one side is pressed in the rotating shaft 2;
202. placing the front elastomeric component 16;
203. pressing in the front cover plate 14;
204. pressing the front shaft sleeve 21;
205. placing a magnetic steel 5 on one side of the small-inner-diameter rotor core;
206. pressing in a second rear rotor iron core 8 on the other side to ensure that the small inner diameter rotor iron core is tightly attached to the magnetic steel 5, and staggering the front and rear rotor iron cores by a certain angle in the radial direction;
207. a rear elastomer member 17 placed on the other side;
208. covering the other side rear cover plate 15;
209. the other side rear boss 22 is pressed in.
This embodiment adopts the rotor equipment mode of axle sleeve and axle interference, can simply realize increasing ring elastomer subassembly in rotor core inside, has greatly reduced damping rotor core's the production degree of difficulty, has reduced the production and the manufacturing cost of motor.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A stepping motor rotor comprises a rotating shaft (2), magnetic steel (5), a front rotor iron core assembly (18) and a rear rotor iron core assembly (19), wherein the rotating shaft (2) sequentially penetrates through the front rotor iron core assembly (18), the magnetic steel (5) and the rear rotor iron core assembly (19), and is characterized in that the front rotor iron core assembly (18) comprises a second front rotor iron core (7), a front elastic body assembly (16) and a front cover plate (14), and the front elastic body assembly (16) is placed in a cavity of the second front rotor iron core (7) and is packaged through the front cover plate (14); the rear rotor core assembly (19) comprises a second rear rotor core (8), a rear elastic body assembly (17) and a rear cover plate (15), and the rear elastic body assembly (17) is placed in a cavity of the second rear rotor core (8) and is packaged through the rear cover plate (15);
the rotating shaft (2) penetrates through the front cover plate (14) and the rear cover plate (15) in an interference mode.
2. The rotor of a stepping motor according to claim 1, wherein the second front rotor core (7) and the second rear rotor core (8) are rotor cores formed by laminating two kinds of rotor sheets with different inner diameters.
3. A stepping motor rotor according to claim 1, characterized in that said front elastomer member (16) comprises a front ring weight (11) and a front elastomer (10), said front ring weight (11) being placed in the front elastomer (10).
4. A stepping motor rotor according to claim 1, characterized in that said rear elastic body assembly (17) comprises a rear circular ring weight (13) and a rear elastic body (12), said rear circular ring weight (13) being disposed in the rear elastic body (12).
5. A rotor for a stepping motor according to claim 1, wherein said magnetic steel (5) is located between the second front rotor core (7) and the second rear rotor core (8) and is closely attached to the rotor lamination on the side with smaller inner diameter.
6. A rotor for a stepping motor according to claim 1, wherein a front bushing (21) for preventing displacement of the front cover is provided outside the front cover (14), and a rear bushing (22) for preventing displacement of the rear cover is provided outside the rear cover (15).
7. A rotor as claimed in claim 6, characterised in that said front sleeve (21) is in interference fit with the shaft (2) and said rear sleeve (22) is in interference fit with the shaft (2).
8. A rotor for a stepping motor according to claim 6, wherein said front sleeve (21) and said rear sleeve (22) are made of copper or aluminum material.
9. A method of manufacturing a rotor for a stepper motor as defined in any of claims 1-5, comprising the steps of:
101) a second front rotor iron core (7) is pressed into one side of the rotating shaft (2);
102) placing a front elastomeric component (16);
103) pressing in a front cover plate (14);
104) a magnetic steel (5) is arranged on one side of the small-inner-diameter rotor iron core;
105) pressing in a second rear rotor iron core (8) on the other side to ensure that the small inner diameter rotor iron core is tightly attached to the magnetic steel (5), and the front rotor iron core and the rear rotor iron core are staggered by a certain angle in the radial direction;
106) a rear elastomeric component (17) placed on the other side;
107) the other side rear cover plate (15) is pressed in.
10. A manufacturing method for a rotor of a stepping motor according to any one of claims 6 to 8, comprising the steps of:
201) a second front rotor iron core (7) is pressed into one side of the rotating shaft (2);
202) placing a front elastomeric component (16);
203) pressing in a front cover plate (14);
204) pressing in a front shaft sleeve (21);
205) a magnetic steel (5) is arranged on one side of the small-inner-diameter rotor iron core;
206) a second rear rotor iron core (8) on the other side is pressed in to ensure that the rotor iron core with the small inner diameter is tightly attached to the magnetic steel (5), and the front rotor iron core and the rear rotor iron core are staggered by a certain angle in the radial direction;
207) a rear elastomeric component (17) placed on the other side;
208) covering the other side rear cover plate (15);
209) the other side rear bushing (22) is pressed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101900.XA CN114337030A (en) | 2022-01-27 | 2022-01-27 | Stepping motor rotor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101900.XA CN114337030A (en) | 2022-01-27 | 2022-01-27 | Stepping motor rotor and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114337030A true CN114337030A (en) | 2022-04-12 |
Family
ID=81031317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210101900.XA Pending CN114337030A (en) | 2022-01-27 | 2022-01-27 | Stepping motor rotor and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114337030A (en) |
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2022
- 2022-01-27 CN CN202210101900.XA patent/CN114337030A/en active Pending
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