CN106849418A - A kind of rotor punching and the method that cast-aluminum rotor is produced using the punching - Google Patents
A kind of rotor punching and the method that cast-aluminum rotor is produced using the punching Download PDFInfo
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- CN106849418A CN106849418A CN201710155430.4A CN201710155430A CN106849418A CN 106849418 A CN106849418 A CN 106849418A CN 201710155430 A CN201710155430 A CN 201710155430A CN 106849418 A CN106849418 A CN 106849418A
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- 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
- H02K1/22—Rotating parts of the magnetic circuit
-
- 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
-
- 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)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Induction Machinery (AREA)
Abstract
The invention provides a kind of rotor punching, including：Axis hole is provided with punching body；Some punching grooves, one end of the punching groove is that the stub end other end is small head end；Micro-groove, is arranged on punching body, and one end of micro-groove connects with punching groove and the other end is towards the outward flange of punching body；A kind of method that rotor punching produces cast-aluminum rotor, comprises the following steps：Step 1, blank is put into rotor punching is struck out on high velocity ram machine；Step 2, by some rotor punching stack assembly, so as to form rotor core；Step 3, by aluminium through die casting press-in rotor core groove in, so as to form cast-aluminum rotor；In step 4, the axis hole of finished product axle press-in cast-aluminum rotor；Step 5, the external diameter to rotor core are finished, so as to form finished product.Beneficial effects of the present invention are：In actual production, especially when cast-aluminum rotor is produced, closed slot aluminium water will not spill into rotor outer surface, so as to greatly facilitate cast aluminium, simplify production procedure.
Description
Technical field
The invention belongs to rotor and rotor production technical field, it is related to a kind of rotor punching, further relates to a kind of profit
The method that cast-aluminum rotor is produced with the punching.
Background technology
Low voltage motor rotor punching has been used up 2 kinds of forms；1st, open slot, rotor punching punch die is also adopted by open slot and sets
Meter, because punching notch is smaller, the intensity of punch die processing slot-open-section is weaker, thus easily causes punch die damage, increases mould
Manufacturing cost, influences manufacturing schedule.In addition, when rotor is cast aluminium, the rotor punching designed using open slot, the appearance of rotor
Face has aluminium water spilling, is wrapped on the outer surface of rotor, and the dimensional accuracy to cast-aluminum rotor can not guarantee, while cast-aluminum rotor
During Vehicle Processing, Integrated Chip residual is easily caused, processing cost can be increased.2nd, closed slot, rotor punching punch die also uses closed slot
Design, solves the technology and Cost Problems of punch die, while have guarantee to the dimensional accuracy of cast-aluminum rotor, but cast-aluminum rotor
Che Jiahou, surface is still remained silent groove profile, and the maximum problem of groove profile of remaining silent is：The rotor leakage reactance of closed slot is larger, to torque capacity,
Revolutional slip and detent torque when there is torque capacity all have an impact, and cause power factor low.Aluminium is easily caused during processing
It is lost in, aluminium cost is used in increase, during cast-aluminum rotor Vehicle Processing, easily causes Integrated Chip residual, increase stray loss of motor, reduces electricity
Engine efficiency.
Such as a kind of Chinese invention patent of Patent No. 201310005698.1, rushed it discloses a kind of rotor for electromotor
Piece, including rotor punching body, the rotor punching body are provided with along its circumferential equally distributed rotor punching groove, the rotor punching
Film trap position closed slot；Rotor punching groove of the invention is closed slot, thus its mould bulk strength is high, so as to extend mould
Service life so that the low cost of manufacture of punching.
But above-mentioned rotor punching, it is cumbersome in actual production, cannot still solve the presence of closed slot rotor
A series of problems.
When for producing cast-aluminum rotor, its production procedure is still cumbersome, and yield rate is relatively low.
The content of the invention
The purpose of the present invention is directed to the above mentioned problem of prior art presence, it is proposed that a kind of rotor punching.
The purpose of the present invention can be realized by following technical proposal：A kind of rotor punching, including：
Punching body, it is discoid, and the axis hole being arranged concentrically with its center of circle is provided with the punching body；
Some punching grooves, its outward flange side for being uniformly arranged around the punching body, the one of the punching groove
It towards the stub end other end of the punching body is small head end towards the axis hole that end is；
Micro-groove, its quantity is equal with the quantity of the punching groove and corresponds setting, and the micro-groove is arranged on
On the punching body, one end of the micro-groove connects with the punching groove and the other end is towards the outside of the punching body
Edge.
Preferably, being additionally provided with some circular holes on the punching body, each circular hole is uniformly arranged around the axis hole
Row.
Preferably, offering the blocked hole of the folding bar for flipping up and the correspondence folding bar, institute on the punching body
Blocked hole is stated to the folding bar on the adjacent punching body of clamping.
Preferably, the punching groove is provided with the first chamfering with the junction of the micro-groove.
Preferably, outward flange one end of the micro-groove correspondence punching body is provided with the second chamfering.
Preferably, the micro-groove is 0.15 millimeter with the unilateral spacing in punching outer body edge.
Preferably, the quantity of the punching groove is 48.
Preferably, the quantity of the circular hole is 6.
Secondly, it is also proposed that a kind of method that rotor punching produces cast-aluminum rotor, comprise the following steps：
Step 1, discoid blank is put on high velocity ram machine, described turning is struck out by corresponding high-speed stamping die
Sub- punching；
Step 2, by some described rotor punchings by folding bar and blocked hole stack assembly, so as to form rotor core；
Step 3, by aluminium water through die casting press-in rotor core groove in, because the micro-groove on rotor punching with it is described
Punching groove constitutes closed slot structure, so aluminium water will not be excessive, so as to form cast-aluminum rotor；
Step 4, by finished product axle press-in cast-aluminum rotor axis hole in, so as to form rotor semi-finished product；
Step 5, the iron core external diameter to rotor are finished, so as to form rotor finished product.
Preferably, in cast aluminium, A00 rotor aluminums are pressed into the punching groove first, because micro-groove outside is to remain silent
, so A00 aluminium water will not overflow, rotor outer surface is unusual light, so as to ensure that the dimensional accuracy of cast-aluminum rotor.
Compared with prior art, beneficial effects of the present invention are：
1st, structure very it is ingenious rationally, in actual production, especially when cast-aluminum rotor is produced, closed slot will not allow aluminium
Water overflows, and so as to greatly facilitate cast aluminium, simplifies production procedure.
2nd, after rotor punching is using flute profile of remaining silent, the abrasion to being covered in cast-aluminum die is relatively low, improves the mold use longevity
Life, reduces die cost, and improve production efficiency, it is ensured that product quality during cast-aluminum rotor Vehicle Processing, is processed closed slot outside
Afterwards, open slot is formed, rotor leakage reactance is effectively reduced, maximum moment, staring torque and power factor is improve, so as to carry
The overall performance of motor high.Integrated Chip residual is not resulted in, stray loss of motor is reduced, electric efficiency is high.
3rd, circular hole can mitigate the weight of punching body so that rotor core is more light.
It is very convenient when the 4th, producing cast-aluminum rotor using rotor punching, and operation is simple, and yield rate is higher.
5th, open slot is formed after rotor machining, it is to avoid the harmful effect for bringing of remaining silent.
Brief description of the drawings
Fig. 1 is the structural representation of rotor punching of the invention；
Fig. 2 is the A portions enlarged diagram of Fig. 1；
Fig. 3 is the structural representation of punching groove of the invention and micro-groove；
Fig. 4 is the schematic flow sheet of the method for rotor punching production cast-aluminum rotor of the invention.
In figure, 100, punching body；110th, axis hole；120th, circular hole；130th, folding bar；140th, blocked hole；200th, punching groove；
210th, stub end；220th, small head end；230th, the first chamfering；300th, micro-groove；310th, the second chamfering.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of rotor punching, including：Punching body 100, punching groove 200 and micro-groove
300, it is the punching of internal rotor iron core that the rotor punching is used to constitute rotor core, and the rotor punching, fixed for being arranged on
In sub- iron core.
The structure of the rotor punching is very reasonable, very convenient in cast aluminium, with operation is simplified, reduces operating procedure,
Improve the advantage of yield rate.
Wherein, punching body 100 is exactly the matrix of whole rotor punching, and it is discoid, punching groove 200 and micro-groove
300 are provided on punching body 100, and the axis hole being arranged concentrically with its center of circle is provided with the punching body 100
110。
In actual product, a diameter of 94.9mm of rotor punching, the diameter of axis hole 110 could be arranged to 15.9mm,
So the rotor punching has an outward flange for circle.
The quantity of punching groove 200 can be set as needed, and its quantity is more, these and be uniformly arranged around institute
State the outward flange side of punching body 100, herein it is worthy of note that, these punching grooves 200 be with axis hole 110 for the center of circle surround
Arrangement, after above-mentioned punching groove 200 is linked up, form a circular ring structure.
One end of the punching groove 200 is the stub end 210 towards the punching body 100, and the other end is described in
The small head end 220 of axis hole 110；In simple terms, punching groove 200 is shaped as fusiform, the big one end in one end is small, and this structure is rushed
Film trap 200, the distribution of aluminium block when being conducive to cast aluminium, and cause that Mass Distribution is more reasonable.
In actual product, the small head end 220 of the punching groove 200 is 35mm, letter with the center of circle distance of punching body 100
For list, the end position of exactly small head end 220 is considered as being located on the circle of a diameter of 70mm.
The quantity of micro-groove 300 is equal with the quantity of the punching groove 200 and corresponds setting, and both remain silent in formation
Slot structure, is exactly each micro-groove 300 one punching groove 200 of correspondence in simple terms, and both can be regarded as being wholely set,
The micro-groove 300 is arranged on the punching body 100, one end of the micro-groove 300 connected with the punching groove 200 and
The other end is towards the outward flange of the punching body 100.
Herein it is worthy of note that, micro-groove 300 with punching groove 200 processing when, be in punching by stamping mold
Punch forming is out on body 100.
In actual product, the length of micro-groove 300 is 0.75mm, and its size is very tiny, and punching groove 200
Position be actually very near the outward flange of punching body 100, and micro-groove 300 can be regarded as punching groove 200 to
The part that the outward flange of punching body 100 is extended, so the spacing between punching body 100 and micro-groove 300 is non-
Chang Feichang is small, only the distance of 0.15mm or so so that in cast aluminium, is prevented from aluminium water and is overflowed from closed slot, and
During rotor machining rotor core external diameter, due to small-sized, and very convenient processing forms open slot.
The punching of this structure is very ingenious reasonable, in actual production, especially when cast-aluminum rotor is produced, at the beginning
For the punching groove 200 of closed slot structure will not rupture, opening slot structure is formed, so as to greatly facilitate cast aluminium, simplify production
Flow.
The rotor punching of this shape and structure, in cast-aluminum die cover abrasion it is relatively low, improve the mold use life-span,
Production efficiency, reduces die cost, reduces die cost, and improve production efficiency, it is ensured that product quality, cast-aluminum rotor car adds
In man-hour, after the processing of closed slot outside, formation open slot is effectively reduced rotor leakage reactance, improves maximum moment, starts power
Square and power factor, so as to improve the overall performance of motor.Integrated Chip residual is not resulted in, stray loss of motor, electricity is reduced
Engine efficiency is high.
As shown in figure 1, in the structure of above-mentioned implementation method, some circular holes are additionally provided with the punching body 100
120, circular hole 120 can mitigate the weight of punching body 100 so that rotor core is more light, also, each circular hole
120 is evenly distributed around the axis hole 110, and these arrangement forms of circular hole 120 are circular.
Herein it is worthy of note that, in actual product, the quantity of the circular hole 120 is 6, and each circular hole
120 a diameter of 12mm, the spacing between the center of circle of circular hole 120 and the center of circle of punching body 100 is 21.5mm, in simple terms,
Exactly above-mentioned circular hole 120 is considered as being located on an annulus of a diameter of 43mm for the center of circle.
As shown in figure 1, in the structure of above-mentioned implementation method, the folding for flipping up is offered on the punching body 100
The blocked hole 140 of bar 130 and the correspondence folding bar 130, the blocked hole 140 is on the adjacent punching body 100 of clamping
Folding bar 130, herein what deserves to be explained is, flanging is exactly the flange that is upturned slightly, is gone out similar to the hollow out of blocked hole 140
Come the part being upturned.
Two neighbouring punching bodies 100, positioned at the punching body 100 of downside, its folding bar 130 is connected to positioned at upper
In the blocked hole 140 of the punching body 100 of side, so that both link together.
As shown in figure 3, in the structure of above-mentioned implementation method, the junction of the punching groove 200 and the micro-groove 300
The first chamfering 230 is provided with, first chamfering 230 has the characteristics of optimizing punching groove 200 with 300 structure of micro-groove, can make
Rotor punching is more smooth in punching press, improves yield rate.
In actual product, the first chamfering 230 is R0.02, and the small head end 220 of punching groove 200 also has one in fact
Individual chamfering, the chamfering is R1.06, and stub end 210 also has a chamfering, and the chamfering is R1.63.
As shown in Figure 1, Figure 3, in the structure of above-mentioned implementation method, the correspondence of the micro-groove 300 punching body 100
Outward flange one end be provided with the second chamfering 310, the second chamfering 310 helps to be processed outside follow-up closed slot.
As shown in Fig. 2 in the structure of above-mentioned implementation method, the micro-groove 300 and the outer side edges of punching body 100
The unilateral spacing of edge is 0.15 millimeter.
As shown in figure 1, in the structure of above-mentioned implementation method, the quantity of the punching groove 200 is 48.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, in the structure of above-mentioned implementation method, secondly, it is also proposed that a kind of rotor punching
The method that piece produces cast-aluminum rotor, comprises the following steps：
Step 1, discoid blank is put on high velocity ram machine, described turning is struck out by corresponding high-speed stamping die
Sub- punching；
Stamping mold is the mould of customization, and it matches with the shape size of rotor punching, can accurately stamp out punching
Groove 200 and micro-groove 300, then obtain rotor punching.
Step 2, by some described rotor punchings by folding bar 130 and the stack assembly of blocked hole 140, so as to form rotor
Iron core；
After obtaining rotor core, it is possible to which the iron core is carried out into cast aluminium.
Step 3, by aluminium water through die casting press-in rotor core groove in, because the micro-groove 300 on rotor punching with
The punching groove 200 constitutes closed slot structure, so aluminium water will not be excessive, so as to form cast-aluminum rotor.
Step 4, by finished product axle press-in cast-aluminum rotor axis hole 110 in, so as to form rotor semi-finished product；
Step 5, the iron core external diameter to rotor are finished, so as to form rotor finished product.
Herein it is worthy of note that, it is final, it is necessary to cut the external diameter of rotor core when being finished to rotor core
To the rotor core of a diameter of 94.4mm, so as to form open slot.
It is very convenient when producing cast-aluminum rotor using rotor punching, and operation is simple, and yield rate is higher.
In actual production process, the abrasion to being covered in cast-aluminum die is relatively low, improves mold use life-span, production effect
Rate, by die cost, reduces die cost, improve production efficiency, it is ensured that product quality, during cast-aluminum rotor Vehicle Processing, closing
After the outside processing of mouth groove, open slot is formed, be effectively reduced rotor leakage reactance, improve maximum moment, staring torque and work(
Rate factor, so as to improve the overall performance of motor.Integrated Chip residual is not resulted in, stray loss of motor is reduced, electric efficiency is high.
As shown in Figure 1 and Figure 2, in the structure of above-mentioned implementation method, in cast aluminium, A00 rotor aluminum hydraulic pressure is entered into institute first
State in punching groove 200, because the outside of micro-groove 300 is remained silent, so A00 aluminium water will not overflow, rotor outer surface is very
It is smooth, so as to ensure that the dimensional accuracy of cast-aluminum rotor.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of rotor punching, it is characterised in that including：
Punching body, it is discoid, and the axis hole being arranged concentrically with its center of circle is provided with the punching body；
Some punching grooves, its outward flange side for being uniformly arranged around the punching body, one end of the punching groove is
The stub end other end towards the punching body is the small head end towards the axis hole；
Micro-groove, its quantity is equal with the quantity of the punching groove and corresponds setting, and the micro-groove is arranged on described
On punching body, one end of the micro-groove connects with the punching groove and the other end is towards the outward flange of the punching body.
2. rotor punching as described in claim 1, it is characterised in that：Some circular holes are additionally provided with the punching body,
Each circular hole is evenly distributed around the axis hole.
3. rotor punching as described in claim 2, it is characterised in that：The folding for flipping up is offered on the punching body
The blocked hole of bar and the correspondence folding bar, the blocked hole is to the folding bar on the adjacent punching body of clamping.
4. the rotor punching as described in claim 1 or 3, it is characterised in that：The connection of the punching groove and the micro-groove
Place is provided with the first chamfering.
5. rotor punching as described in claim 4, it is characterised in that：The outside of the micro-groove correspondence punching body
Edge one end is provided with the second chamfering.
6. rotor punching as described in claim 5, it is characterised in that：The micro-groove and the punching outer body edge
Unilateral spacing is 0.15 millimeter.
7. rotor punching as described in claim 4, it is characterised in that：The quantity of the punching groove is 48.
8. rotor punching as described in claim 2, it is characterised in that：The quantity of the circular hole is 6.
9. the method for cast-aluminum rotor being produced according to any rotor punching in claim 1 to 8, it is characterised in that including with
Lower step：
Step 1, discoid blank is put on high velocity ram machine, striking out the rotor by corresponding high-speed stamping die rushes
Piece；
Step 2, by some described rotor punchings by folding bar and blocked hole stack assembly, so as to form rotor core；
Step 3, by aluminium water through die casting press-in rotor core groove in, because of the micro-groove on rotor punching and the punching
Groove constitutes closed slot structure, so aluminium water will not be excessive, so as to form cast-aluminum rotor；
Step 4, by finished product axle press-in cast-aluminum rotor axis hole in, so as to form rotor semi-finished product；
Step 5, the iron core external diameter to rotor are finished, so as to form rotor finished product.
10. the method that rotor punching as described in claim 9 produces cast-aluminum rotor, it is characterised in that：In cast aluminium, first
A00 rotor aluminums are pressed into the punching groove, because micro-groove outside is remained silent, so A00 aluminium water will not overflow, outside rotor
Surface is unusual light, so as to ensure that the dimensional accuracy of cast-aluminum rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155430.4A CN106849418A (en) | 2017-03-16 | 2017-03-16 | A kind of rotor punching and the method that cast-aluminum rotor is produced using the punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155430.4A CN106849418A (en) | 2017-03-16 | 2017-03-16 | A kind of rotor punching and the method that cast-aluminum rotor is produced using the punching |
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| Publication Number | Publication Date |
|---|---|
| CN106849418A true CN106849418A (en) | 2017-06-13 |
Family
ID=59144565
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710155430.4A Pending CN106849418A (en) | 2017-03-16 | 2017-03-16 | A kind of rotor punching and the method that cast-aluminum rotor is produced using the punching |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276261A (en) * | 2017-07-15 | 2017-10-20 | 芜湖瑞德机械科技有限公司 | The butterfly stator and its processing method of car wheel electromotor |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
| CN109004802A (en) * | 2018-09-14 | 2018-12-14 | 临安泰华机械设备有限公司 | A kind of rotor processing technique |
| CN109361279A (en) * | 2018-12-20 | 2019-02-19 | 常州神力电机股份有限公司 | A kind of heavy duty detergent wind-powered electricity generation self-adhesive rotor punching closed assembly structure |
| CN113270983A (en) * | 2021-05-12 | 2021-08-17 | 青岛力久电机科技有限公司 | Automatic aluminum casting device for motor rotor |
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| JPH09289761A (en) * | 1996-04-22 | 1997-11-04 | Hitachi Ltd | Induction motor |
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| CN101814804A (en) * | 2010-01-15 | 2010-08-25 | 浙江京马电机有限公司 | Method for producing cast-aluminum motor rotor |
| CN204316207U (en) * | 2014-12-20 | 2015-05-06 | 方浪 | A kind of apparatus for cast-aluminium rotor of electric machine |
| CN204652068U (en) * | 2015-05-18 | 2015-09-16 | 威灵（芜湖）电机制造有限公司 | Rotor punching, rotor core, rotor and the motor for air-conditioning fan |
| CN204696823U (en) * | 2015-05-19 | 2015-10-07 | 威灵（芜湖）电机制造有限公司 | Rotor punching, rotor core, rotor and the motor for air-conditioning fan |
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| JPH09289761A (en) * | 1996-04-22 | 1997-11-04 | Hitachi Ltd | Induction motor |
| CN1630169A (en) * | 2003-12-18 | 2005-06-22 | 荣成市荣佳电机有限公司 | Method for making motor rotor |
| CN101814804A (en) * | 2010-01-15 | 2010-08-25 | 浙江京马电机有限公司 | Method for producing cast-aluminum motor rotor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276261A (en) * | 2017-07-15 | 2017-10-20 | 芜湖瑞德机械科技有限公司 | The butterfly stator and its processing method of car wheel electromotor |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
| CN107591916B (en) * | 2017-10-28 | 2023-05-30 | 德力电机有限公司 | Cast copper rotor of motor and processing technology thereof |
| CN109004802A (en) * | 2018-09-14 | 2018-12-14 | 临安泰华机械设备有限公司 | A kind of rotor processing technique |
| CN109004802B (en) * | 2018-09-14 | 2020-02-07 | 临安泰华机械设备有限公司 | Rotor machining process |
| CN109361279A (en) * | 2018-12-20 | 2019-02-19 | 常州神力电机股份有限公司 | A kind of heavy duty detergent wind-powered electricity generation self-adhesive rotor punching closed assembly structure |
| CN109361279B (en) * | 2018-12-20 | 2023-12-26 | 常州神力电机股份有限公司 | High-efficient wind-powered electricity generation is from bonding rotor punching lamination structure |
| CN113270983A (en) * | 2021-05-12 | 2021-08-17 | 青岛力久电机科技有限公司 | Automatic aluminum casting device for motor rotor |
| CN113270983B (en) * | 2021-05-12 | 2022-07-08 | 青岛力久电机科技有限公司 | Automatic aluminum casting device for motor rotor |
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Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |