CN109412284A - A kind of hinge type stator and its at circle method - Google Patents
A kind of hinge type stator and its at circle method Download PDFInfo
- Publication number
- CN109412284A CN109412284A CN201811379939.8A CN201811379939A CN109412284A CN 109412284 A CN109412284 A CN 109412284A CN 201811379939 A CN201811379939 A CN 201811379939A CN 109412284 A CN109412284 A CN 109412284A
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- stator
- stator core
- piecemeal
- flange
- core piecemeal
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000004080 punching Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 241000397426 Centroberyx lineatus Species 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K15/026—Wound cores
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of hinge type stator structures, are related to motor field.It is welded currently, motor stator structure is generally used at circle method, it is at high cost, and also welding process can generate a large amount of heat, influence the insulation performance of motor.The present invention includes stator core and stator coil, stator core is to pass sequentially through groove equipped with the stator core piecemeal of groove and flange by several both ends to form with flange inlaying grafting assembly, each stator core piecemeal is made of stator tooth, stator yoke and pole shoe, gap between two adjacent stator core piecemeals forms stator slot, the head and the tail stator core piecemeal for winding stator coil on the stator teeth, is passed through groove composition hinge type stator chimeric with flange by stator slot winding by stator coil.The technical program at circle method very simple, and Cheng Yuanhou stator core torsional strength is high, and the inside and outside circle circularity of stator core is good, without conventional welding procedure, can reduce manufacturing cost expense, effectively improves the comprehensive performance of motor.
Description
Technical field
The present invention relates to a kind of hinge type stator and its at circle method, belong to motor technology and field of motor manufacturing.
Background technique
Conventional motors stator structure is largely monolithic construction, such as Fig. 1, wherein between stator slot and between stator yoke
Material can not efficiently use, and increase material cost, and stator coil passes through stator core slot using the coiling nozzle of dedicated coil winding machine
On the stator teeth, copper factor is lower, and winding efficiency is low, improves labour cost for mouth winding.With motor technology development and
There is the different types structural electromotor stator such as linear, sectional type in the deep propulsion of lean production, improve winding efficiency and
Around line mass, and effective groove area is improved, power of motor can be accomplished higher.This type motor stator structure is at circle method one
As use welding procedure, not only increase cost of labor, and welding process can generate a large amount of heat, seriously affect the exhausted of motor
Edge performance be easy to cause electric machine combination property bad.
Summary of the invention
In view of the shortcomings of the prior art, overcome above-mentioned technical deficiency, the present invention provides a kind of hinge type stator and its at
Circle method.
The technical solution adopted by the present invention is that: a kind of hinge type stator structure, including stator core and stator coil, it is special
Sign is, the stator core be equipped with by several both ends groove and flange stator core piecemeal pass sequentially through the groove with
The flange inlaying grafting assembly forms, and each stator core piecemeal is made of stator tooth, stator yoke and pole shoe, and adjacent two
Gap between a stator core piecemeal forms stator slot, and stator coil is wound around the stator tooth by the stator slot
On, the head and the tail stator core piecemeal for winding stator coil is passed through into groove composition hinge type stator chimeric with the flange；
Wherein, the stator core piecemeal is divided into two kinds according to groove and flange shape: the groove of the first stator core piecemeal and convex
Edge is to be greater than semicircle, the complete phase of flange of the flange of second of stator core piecemeal and the first stator core piecemeal
Same, groove is made of the groove and part of part the first stator core piecemeal no more than semi-circular recesses；Described second
The stator yoke edge markedness slot of kind stator core piecemeal.
In the embodiment of the present invention, the centre point P of the groove and the centre point Q of flange on same circle, the circle
The center of circle is O, and the number of stator slots is N, is met: angle [alpha]=360o/N of POQ, N >=3.
In the embodiment of the present invention, the semi-circular recesses region that is greater than of second of stator core piecemeal is located at stator iron
One end of core piecemeal, and the ratio for being greater than semi-circular recesses region height and stator core piecemeal height is not less than 10%.
In the embodiment of the present invention, the stator yoke edge of the stator core piecemeal has locating slot, positions groove shape
For swallow-tail form, circle or wedge shape, the stator yoke edge markedness slot of second of stator core piecemeal.
In the embodiment of the present invention, the hinge type stator by 1 second of stator core piecemeal and N-1 the first determine
Sub- iron core piecemeal is constituted, and N is the number of stator slots.
In the embodiment of the present invention, the groove and the flange gap cooperate, gap 0.003mm-0.05mm.
The present invention also provides hinge type stator knots to constitute circle method, is characterized in that: point following four step is completed, an
With punching machine by silicon steel sheet according to design scheme punching at the first stator core piecemeal, second of stator core piecemeal, and guarantee
The groove and flange of each stator core piecemeal；Two, are by 1 second of stator core piecemeal (markedness slot) and N-1 first
Kind stator core piecemeal passes sequentially through groove and flange inlaying grafting assembly, forms stator core, and guarantee second of stator core point
The non-grafting of the groove of block；The insulation framework made is arranged on stator core three, and utilizes coil winding machine by stator coil
It is wound in insulation framework with form of straight lines, is formed with wound stator；Four, will have wound stator internally to draw close, to non-grafting
Second of stator core piecemeal slightly exert oneself, be larger than semi-circular recesses region height be higher than non-grafting the first is fixed
The upper plane of sub- iron core piecemeal, while by second stator core piecemeal no more than semi-circular recesses region and the first stator
The flange of iron core piecemeal is in close contact, and is then gently pressed second of stator core piecemeal, is made the first stator core piecemeal
Flange be inserted into second of stator core piecemeal be greater than semi-circular recesses region, until stator core piecemeal end face be aligned,
Hinge type stator is completed at circle.
Preferably, the first described stator core piecemeal, second of stator core piecemeal are individually distinguished by a set of punch die
Punching forms.
Preferably, it is wound in insulation framework when the stator coil is each identical with form of straight lines.
Preferably, after the completion of the hinge type stator Cheng Yuan, adhesive tape is wound in stator core periphery.
The invention has the following advantages:
(1) the present invention uses hinge type stator structure, is made of several stator core piecemeals, is conducive to punching machine punch die in this way
Space layout improves stock utilization, in addition, what replacement was damaged determines if the damage of one of or muti-piece stator core piecemeal
Sub- iron core piecemeal will not cause entire iron core unqualified because part iron core is impaired.
(2) stator core passes sequentially through groove by stator core piecemeal and flange inlaying grafting assembly forms, second of stator iron
The stator yoke edge markedness slot of core piecemeal assembles simple and convenient.
(3) swallow-tail form of the stator yoke edge of stator core piecemeal, circle or wedge-shaped locating slot are fixed to position realization
Subcoil is each mutually with form of straight lines coiling simultaneously.Coiling is convenient, more efficient, winding placement is more reasonable, and stator coil is more
Compact and each phase stator coil is mutually unison higher.In addition to this, it can be improved copper factor, improve the power density of motor, simultaneously
Also it is not limited by stator core notch size, can be improved electric efficiency, promotional value with higher.
(4) hinge type stator is at circle method very simple, and Cheng Yuanhou stator core torsional strength is high, stator core
Inside and outside circle circularity it is good, if Cheng Yuanhou stator core periphery wind adhesive tape, be further ensured that the removing of entire stator core is strong
Degree can reduce manufacturing cost expense, effectively improve the comprehensive performance of motor without conventional welding procedure.
Detailed description of the invention
Fig. 1 is conventional motors stator core construction schematic diagram；
Fig. 2 is conventional motors stator structure schematic diagram；
Fig. 3 is the first stator core piecemeal schematic diagram of the invention；
Fig. 4 is second of stator core piecemeal schematic diagram of the invention；
Fig. 5 is fixed core structure schematic diagram arranged in a straight line of the present invention；
Fig. 6 is stator structure straight line arrangement schematic diagram of the present invention；
Fig. 7 is stator structure Cheng Yuanhou schematic diagram of the present invention；
Fig. 8 is that the present invention has wound stator head and the tail stator core piecemeal splicing position partial enlargement diagram.
In figure: 100- stator；
10- stator core；11- stator core piecemeal；111- stator tooth；112- stator yoke；113- pole shoe；114- locating slot；
115- stator slot；20- stator coil；
The first stator core piecemeal of 1-；The first stator core piecemeal flange of 1a-；The first stator core piecemeal groove of 1b-；
Second of stator core piecemeal of 2-；Second of stator core piecemeal flange of 2a-；Second of stator core piecemeal groove of 2b-；
2c- is not more than semi-circular recesses；2d- mark slot.
Specific embodiment
Below with reference to examples and drawings, the invention will be further described.
A kind of hinge type stator structure 100, as shown in fig. 7, comprises stator core 10 and stator coil 20, feature exists
In, the stator core 10 be equipped with by several both ends groove and flange stator core piecemeal 11 pass sequentially through the groove with
The flange inlaying grafting assembly forms, and each stator core piecemeal 11 is by stator tooth 111, stator yoke 112 and 113 groups of pole shoe
At the gap between the stator core piecemeal 11 of adjacent two forms stator slot 115, and stator coil 20 passes through the stator
Slot 115 is wound around on the stator tooth 111, will wind the head and the tail stator core piecemeal 11 of stator coil 20 by the groove with
The flange is chimeric to constitute hinge type stator 100.Wherein, the stator core piecemeal 11 is divided into two according to groove and flange shape
Kind: the groove 1b and flange 1a of the first stator core piecemeal 1 are to be greater than semicircle, second stator core piecemeal 2 it is convex
Edge 2a is identical with the flange 1a of the first stator core piecemeal, groove 2b is divided by the first described stator core of part
The groove 1b of block and part are formed no more than semi-circular recesses 2c.
There is provided hinge type stator knots to constitute circle method for another object of the present invention, and be characterized in that: a point following four walks
Rapid to complete, punching machine is by silicon steel sheet according to design scheme punching at the first stator core piecemeal 1, second of stator core
Piecemeal 2, the first stator core piecemeal 1 as shown in figure 3, second of stator core piecemeal 2 as shown in figure 4, and guaranteeing each fixed
The groove and flange of sub- iron core piecemeal 11；Two, by second of stator core piecemeal 2 of 1 markedness slot and N-1 the first
Stator core piecemeal 1 passes sequentially through groove and flange inlaying grafting assembly, forms stator core 10, such as Fig. 5 of stator core 10, and guarantee
The non-grafting of groove 2b of second of stator core piecemeal 2；The insulation framework made is arranged on stator core 10 three, and
Stator coil 20 is wound in insulation framework with form of straight lines using coil winding machine, is formed with wound stator, wound stator such as Fig. 6
It is shown；Four, will have wound stator internally to draw close, and slightly exert oneself to second of stator core piecemeal 2 of non-grafting, keep it big
Height in the region semi-circular recesses 1a is higher than the upper plane of the first stator core piecemeal 1 of non-grafting, while by second
Stator core piecemeal 2 is in close contact no more than the flange 1a of the region semi-circular recesses 2c and the first stator core piecemeal 1, so
Second of stator core piecemeal 2 is gently pressed afterwards, the flange 1a of the first stator core piecemeal 1 is made to be inserted into second of stator
Iron core piecemeal 2 is greater than semi-circular recesses (identical as the groove 1b of the first stator core piecemeal 1) region, until stator core point
The alignment of 11 end face of block, as shown in Figure 7 and Figure 8, hinge type stator 100 is completed at circle.
Preferably, on same circle, the center of circle of the circle is O, stator slot by the centre point P of groove and the centre point Q of flange
Number is N, and meet: angle [alpha]=360o/N of POQ, N >=3,112 edges at two ends of stator yoke are conllinear with OP, OQ respectively.It can protect in this way
Smooth Cheng Yuan is demonstrate,proved, and is seamlessly connected 11 stator yoke of adjacent stator core piecemeal, 112 joint, ensure that the smooth logical of magnetic circuit
It crosses and integrality.
Preferably, the region semi-circular recesses 1b that is greater than of second of stator core piecemeal 2 is located at the one of stator core piecemeal 2
End, and the ratio for being greater than semi-circular recesses 1b region height and 2 height of stator core piecemeal is not less than 10%.Facilitate hinge type fixed
Sub- Cheng Yuan, and the torsional strength of stator core 10 is improved, guarantee the intensity of 11 splicing position of head and the tail stator core piecemeal.
Preferably, 112 edge of stator yoke of stator core piecemeal 11 has locating slot 114, and 114 shape of locating slot is swallow
Tail shape, circle or wedge shape, the 112 edge markedness slot 2d of stator yoke of second of stator core piecemeal 2.Due to locating slot
114 presence keeps coiling more convenient, and winding process stator core piecemeal 11 is prevented to be displaced, and mark slot 2d allows operator
It is more easier to identify stator core piecemeal 11, assembly is simpler, and Cheng Yuan is more convenient.
Preferably, hinge type stator 100 is by 1 second of stator core piecemeal 1 and N-1 the first stator core piecemeals
2 are constituted, and N is number of stator slots.This combination manufacture is convenient, and assembly is simple, stable structure.
Preferably, groove and flange gap cooperate, gap 0.003mm-0.05mm.This gap is feasible in manufacture production
Under the premise of property, magnetic circuit is set to pass through as far as possible.
Preferably, the first stator core piecemeal 1, second of stator core piecemeal 2 are individually rushed respectively by a set of punch die
It makes.One set of die punching can reduce the investment of mold, and independent punching can prevent stator core piecemeal 11 mixed.
Preferably, it is wound in insulation framework when stator coil 20 is each identical with form of straight lines.Winding efficiency is higher, coiling
It is more reasonable to be laid out, and stator coil 20 is more compact and each phase stator coil 20 is mutually unison higher.In addition to this, it can accomplish height
Copper factor improves the power density of motor, can also get rid of the limitation of stator core notch size, is improved by reducing notch
Electric efficiency.
Preferably, 11 grafting Cheng Yuan of head and the tail stator core piecemeal, the flange 1a of the first stator core piecemeal 1 and second
The first the 1 groove 1b region grafting of stator core piecemeal of the part of stator core piecemeal 2.At circle method very simple, and at
10 torsional strength of stator core is high after circle, and the inside and outside circle circularity of stator core 10 is good.
Preferably, after the completion of hinge type stator Cheng Yuan, adhesive tape is wound in 10 periphery of stator core.It is entire fixed to be further ensured that
The peel strength of sub- iron core 10 can reduce manufacturing cost expense, effectively improve motor without conventional welding procedure
Comprehensive performance.
Above-mentioned specific embodiment is used only to illustrate the present invention, rather than is to limit the invention, in the present invention
Objective and scope of protection of the claims in, to any replacement and change not made the creative labor for making of the present invention,
Fall within the scope of protection of the patent of the present invention.
Claims (10)
1. a kind of hinge type stator structure, including stator core and stator coil, which is characterized in that if the stator core be by
Dry both ends pass sequentially through the groove equipped with the stator core piecemeal of groove and flange and form with the flange inlaying grafting assembly, each
The stator core piecemeal is made of stator tooth, stator yoke and pole shoe, between the stator core piecemeal of adjacent two
Gap forms stator slot, and stator coil is wound around on the stator tooth by the stator slot, will wind the head and the tail of stator coil
Stator core piecemeal passes through groove composition hinge type stator chimeric with the flange；Wherein, the stator core piecemeal is pressed
Be divided into two kinds according to groove and flange shape: the groove and flange of the first stator core piecemeal are to be greater than semicircle, and second
The flange of stator core piecemeal is identical with the flange of the first stator core piecemeal, groove by part it is described the first
The groove of stator core piecemeal and part are formed no more than semi-circular recesses；The stator yoke side of second of stator core piecemeal
Edge opens up markedness slot.
2. hinge type stator structure according to claim 1, which is characterized in that the centre point P of the groove and flange
For centre point Q on same circle, the center of circle of the circle is O, and the number of stator slots is N, is met: angle [alpha]=360o/N of POQ, N >=
3。
3. hinge type stator structure according to claim 1, which is characterized in that second of stator core piecemeal it is big
It is located at one end of stator core piecemeal in semi-circular recesses region, and described greater than semi-circular recesses region height and stator core
The ratio of piecemeal height is not less than 10%.
4. hinge type stator structure according to claim 1, which is characterized in that the stator yoke side of the stator core piecemeal
Edge offers locating slot, and positioning groove shape is swallow-tail form, circle or wedge shape.
5. hinge type stator structure according to claim 1, which is characterized in that the hinge type stator by 1 second
Stator core piecemeal and N-1 the first stator core piecemeals are constituted, and N is the number of stator slots.
6. hinge type stator structure according to claim 1, which is characterized in that the groove is matched with the flange gap
It closes, gap 0.003mm-0.05mm.
7. hinge type stator structure according to claim 1 at circle method, which is characterized in that at circle method include following
Step:
1) with punching machine by silicon steel sheet according to design scheme punching at the first stator core piecemeal, second of stator core piecemeal,
And guarantee the groove and flange of each stator core piecemeal；
2) second of stator core piecemeal of 1 markedness slot and N-1 the first stator core piecemeals are passed sequentially through into groove
With flange inlaying grafting assembly, stator core is formed, and guarantees the non-grafting of groove of second of stator core piecemeal；
3) by the insulation framework made be arranged on stator core, and using coil winding machine by stator coil with form of straight lines around
System is formed with wound stator in insulation framework；
4) there will be wound stator internally to draw close, slightly exert oneself to second of stator core piecemeal of non-grafting, and be larger than half
The height in circular groove region is higher than the upper plane of the first stator core piecemeal of non-grafting, while by second of stator core
Piecemeal is in close contact no more than the flange of semi-circular recesses region and the first stator core piecemeal, then by second of stator
Iron core piecemeal is gently pressed, make the flange of the first stator core piecemeal be inserted into second of stator core piecemeal be greater than semicircle
Connected in star region, until stator core piecemeal end face is aligned, hinge type stator is completed at circle.
8. according to claim 7 at circle method, which is characterized in that the first described stator core piecemeal is determined for second
Sub- iron core piecemeal is that individually punching forms respectively by a set of punch die.
9. it is according to claim 7 at circle method, which is characterized in that when the stator coil is each identical with form of straight lines around
System is in insulation framework.
10. according to claim 7 at circle method, which is characterized in that after the completion of the hinge type stator Cheng Yuan, in stator
Outer diameter winds adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379939.8A CN109412284A (en) | 2018-11-20 | 2018-11-20 | A kind of hinge type stator and its at circle method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379939.8A CN109412284A (en) | 2018-11-20 | 2018-11-20 | A kind of hinge type stator and its at circle method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109412284A true CN109412284A (en) | 2019-03-01 |
Family
ID=65474054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811379939.8A Pending CN109412284A (en) | 2018-11-20 | 2018-11-20 | A kind of hinge type stator and its at circle method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109412284A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216412A (en) * | 2019-06-28 | 2019-09-10 | 珠海格力电器股份有限公司 | Sectional type part to be rounded rounding device and rounding method |
| CN112564360A (en) * | 2019-09-26 | 2021-03-26 | 广东威灵电机制造有限公司 | Stator and motor |
| CN112688443A (en) * | 2020-10-08 | 2021-04-20 | 郭星 | Stator punching sheet monomer, stator punching sheet and motor stator |
| WO2023090600A1 (en) * | 2021-11-19 | 2023-05-25 | 삼성전자 주식회사 | Stator and suction motor comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222990A (en) * | 2011-06-09 | 2011-10-19 | 许晓华 | Improved stator structure |
| WO2013131223A1 (en) * | 2012-03-03 | 2013-09-12 | 常州亚通杰威电机有限公司 | Low cogging torque motor stator, and assembly method therefor |
| CN107707044A (en) * | 2017-11-21 | 2018-02-16 | 浙江联宜电机有限公司 | Hinge type stator iron core |
| CN209402256U (en) * | 2018-11-20 | 2019-09-17 | 卧龙电气集团股份有限公司 | A kind of hinge type stator |
-
2018
- 2018-11-20 CN CN201811379939.8A patent/CN109412284A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222990A (en) * | 2011-06-09 | 2011-10-19 | 许晓华 | Improved stator structure |
| WO2013131223A1 (en) * | 2012-03-03 | 2013-09-12 | 常州亚通杰威电机有限公司 | Low cogging torque motor stator, and assembly method therefor |
| CN107707044A (en) * | 2017-11-21 | 2018-02-16 | 浙江联宜电机有限公司 | Hinge type stator iron core |
| CN209402256U (en) * | 2018-11-20 | 2019-09-17 | 卧龙电气集团股份有限公司 | A kind of hinge type stator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216412A (en) * | 2019-06-28 | 2019-09-10 | 珠海格力电器股份有限公司 | Sectional type part to be rounded rounding device and rounding method |
| CN110216412B (en) * | 2019-06-28 | 2023-10-27 | 珠海格力电器股份有限公司 | Block type rounding device and rounding method for to-be-rounded parts |
| CN112564360A (en) * | 2019-09-26 | 2021-03-26 | 广东威灵电机制造有限公司 | Stator and motor |
| CN112688443A (en) * | 2020-10-08 | 2021-04-20 | 郭星 | Stator punching sheet monomer, stator punching sheet and motor stator |
| WO2023090600A1 (en) * | 2021-11-19 | 2023-05-25 | 삼성전자 주식회사 | Stator and suction motor comprising same |
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