CN208874377U - Threephase asynchronous die casting structure - Google Patents
Threephase asynchronous die casting structure Download PDFInfo
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- CN208874377U CN208874377U CN201821774281.6U CN201821774281U CN208874377U CN 208874377 U CN208874377 U CN 208874377U CN 201821774281 U CN201821774281 U CN 201821774281U CN 208874377 U CN208874377 U CN 208874377U
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- rotor
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- conducting bar
- die casting
- threephase asynchronous
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Abstract
The threephase asynchronous die casting structure of the utility model, rotor core, the conducting bar across rotor bar slot, the rotating assembly across rotor shaft hatch and the end ring set on rotor core both ends including stacked rotor-core lamination composition；The rotor-core lamination is uniformly distributed circumferentially multiple conducting bar slots, the conducting bar slot is mostly closed slot, an open slot is set after being spaced certain circumferential angle, the channel that closed slot is formed after the rotor-core lamination is stacked is silent rotor bar slot, opening trough_like at channel be opening rotor bar slot；The end ring endface has multiple small fan blades and a balance columns, and the small fan blade and balance columns are annular in shape alternate to be uniformly distributed；The end ring and conducting bar are casting integrated molding.The structure design of the utility model is reasonable, casting quality is high, and fault of construction is few, and stray loss of motor is low, realizes saving material cost, reduces procedure of processing, shortens the production cycle.
Description
Technical field
The utility model relates to rotor manufacturing technology fields, and in particular to threephase asynchronous die casting structure.
Background technique
Rotor iron core lamination is the necessary component for constituting cast rotor, and rotor core is folded by certain amount rotor iron core lamination
Made of pressure, rotor iron core lamination periphery has a certain number of groove-like structures, and rotor iron core lamination laminates the rear channel-shaped knot
It has been configured to rotor bar slot, molten metal liquid can have been cast and wherein form rotor bar.
Currently, the groove-like structure of most of rotor iron core laminations is open slot or totally closed slot, it is as shown in Figs 1-4 to turn
The groove-like structure of sub- core stamping 11a is the rotor 1a of the form of open slot 111a, the rotor that open slot 111a is formed
Conducting bar slot easy to exhaust, the disadvantage is that using when casting aluminium material cast rotor frequent occurrence conducting bar slot sky aluminium, conducting bar 4a generate bubble,
The case where crack and disconnected aluminium, stray loss are high, and rotor surface notch overflows a large amount of aluminium scraps, influence rotor surface flatness and
Finish need to remove aluminium scrap by removing method, increase procedure of processing and production cycle；The casting that totally closed slot punching is constituted
Rotor can substantially reduce stray loss when casting using casting aluminium material, but in casting process, due to conducting bar slot be it is closed,
There is great probability to cause molten aluminum that cannot fill up rotor slot, the case where influencing motor performance occurs.
With the raising that market generally requires efficiency, reducing various losses becomes the top priority of each Corporation R & D, because
This need to develop it is a kind of can be while reducing stray loss, easy to exhaust, reduce bubble, broken strip generate motor rotor die-casting knot
Structure.
Utility model content
To overcome the above-mentioned deficiency in the presence of the prior art, the utility model provides threephase asynchronous die casting knot
Structure.The structure design of the utility model is reasonable, casting quality is high, is arranged by open slot and closed slot interval, both avoids standard-sized sheet
There is the case where hollow bar, bubble, crack and broken strip when mouth slot cast rotor conducting bar, reduces the stray loss of motor, and avoid
The case where molten metal occurred when totally closed slot cast rotor conducting bar cannot fill up rotor slot, improves electric efficiency and function
Rate factor reduces motor temperature rise etc. and is unfavorable for the performance indicator that motor uses, and rotor outer circumferential surfac is smooth after casting, light
It is clean, the phenomenon that overflowing waste material at open slot is eliminated, reduces the waste of material in casting process, reduces procedure of processing, is contracted
The short production cycle.
The technical solution of the utility model includes: threephase asynchronous die casting structure, including stacked rotor-core lamination group
At rotor core, the conducting bar across rotor bar slot, the shaft across rotor shaft hatch and the flat key in the middle part of shaft and
End ring set on rotor core both ends；The rotor-core lamination is uniformly distributed circumferentially multiple conducting bar slots, and the conducting bar slot is more
For closed slot, an open slot is set after being spaced certain circumferential angle, closed slot is formed after the rotor-core lamination is stacked
Channel be silent rotor bar slot, opening trough_like at channel be opening rotor bar slot；The end ring endface has multiple
Small fan blade and balance columns, the small fan blade and balance columns are annularly alternate to be uniformly distributed；The end ring is casting integrated with conducting bar
Molding.
Compared with prior art, the threephase asynchronous die casting structure of the utility model has following progress:
(1) reasonable in design: open slot and closed slot interval are arranged, when both having avoided open slot cast rotor conducting bar
There is the case where hollow bar, bubble, crack and broken strip, reduces the stray loss of motor, in turn avoid totally closed slot cast rotor
The molten metal occurred when conducting bar cannot fill up the case where rotor slot；
(2) casting quality is high: rotor bar close structure after casting, electric efficiency and power factor have obtained effectively mentioning
Height reduces motor temperature rise etc. and is unfavorable for the performance indicator that motor uses；
(3) saved material cost, reduced procedure of processing, shortened the production cycle: rotor outer circumferential surfac is flat after casting
It is whole, bright and clean, eliminate the phenomenon that waste material is overflowed at open slot.
As optimization, the circumferentially-spaced adjacent open slot is 30 ° -90 °.Compared with existing Casting Technology, this
The casting technique that utility model uses closed slot to combine with open slot, pressure and fusing when which strictly controls casting
State metal temperature, pressure of casting and melt temperature are the key that cast rotor qualities, in order to guarantee in casting process
Molten metal liquid smoothly circulates, and need to be arranged together every certain circumferential angle to be vented, slow down casting rate, reduce electricity
The opening rotor bar slot of machine stray loss, the circumferential angle selection principle being separated by is generally by the capacity of motor and rotor bar slot
Total slot number determine.
Further, as optimization, the circumferentially-spaced adjacent open slot is 30 °, 45 °, 60 ° or 90 °.It chooses above-mentioned whole
Numerical value positioning easy to process and mold manufacture, on the compound press tool of rotor iron core lamination, Punches are equipped with a small amount of open slot
Formed punch, the overwhelming majority are closed slot formed punch, the complexity of increase mold that will not be excessive and the cost of mold.
As optimization, the end ring and conducting bar use cast aluminium alloy gold material.End ring and conducting bar use cast aluminium alloy gold material
Matter is integrally formed by way of pressure casting, and it is lower that cast aluminium material compares other melting point metals, when pressure casting required pressure
It is smaller, it is easy to operate and control cost；Cast aluminium conducting bar is applied widely, is applicable to large, medium and small motor rotor.
As optimization, the rotor-core lamination using silicon steel sheet it is one time punching molded, the silicon steel sheet with a thickness of
0.5mm.Using the integrally formed method processing rotor iron-core lamination of stamping die, it is ensured that the consistency of its size, in guarantee
The concentricity of outer circle reduces the outer circle bounce of rotor, keeps the rotor-core lamination periphery after being stacked neatly smooth, guarantee rotor iron
Resistance does not reduce between heart punching, reduces pulsation loss and high-frequency loss in use process.
As optimization, the open slot opening width W≤1mm.The restriction of opening width be both convenient in casting process and
When be vented, and reduce the spilling of molten aluminum.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of background technique split shed slot cast-aluminum rotor；
Fig. 2 is the main view of background technique split shed slot cast-aluminum rotor；
Fig. 3 is the cross-sectional view of background technique split shed slot cast-aluminum rotor；
Fig. 4 is the partial enlarged view of background technique split shed slot cast-aluminum rotor；
Fig. 5 is the structural schematic diagram of the threephase asynchronous die casting structure of the utility model；
Fig. 6 is the main view of the threephase asynchronous die casting structure of the utility model；
Fig. 7 is the cross-sectional view of the threephase asynchronous die casting structure of the utility model；
Fig. 8 is the structural schematic diagram of the rotor iron core lamination of the utility model；
Fig. 9 is the partial enlarged view of the rotor iron core lamination of the utility model.
The label in accompanying drawing is:
1a- rotor, 11a- rotor iron core lamination, 111a- open slot；4a- conducting bar；
1- rotor core, 11- rotor-core lamination, 111- open slot, 112- closed slot, 113- rotor shaft hatch；2- end ring,
The small fan blade of 21-, 22- balance columns；3- shaft；4- conducting bar.
Specific embodiment
(embodiment) is further described the utility model with reference to the accompanying drawings and detailed description, this place is retouched
The specific embodiment stated is only used to explain the utility model, but is not intended as the foundation limited the utility model.
The threephase asynchronous die casting structure of the utility model can be applied to YE2, YE3 series three-phase asynchronous motor
In product, also it can be applied in the product of other series.
Referring to Fig. 5-9, the threephase asynchronous die casting structure of the utility model, including stacked rotor-core lamination 11
The rotor core 1 of composition, the conducting bar 4 across rotor bar slot, the rotating assembly 3 across rotor shaft hatch 112 and be set to rotor
The end ring 2 at 1 both ends of iron core；The rotor-core lamination 11 is uniformly distributed circumferentially multiple conducting bar slots, and the conducting bar slot is mostly to close
An open slot 111, closed slot 112 after the rotor-core lamination 11 is stacked is arranged after being spaced certain circumferential angle in mouth slot 112
The channel of formation is silent rotor bar slot, and the channel that open slot 111 is formed is opening rotor bar slot；2 end face of end ring
Place has multiple small fan blades 21 and a balance columns 22, and the small fan blade 21 and balance columns 22 are annular in shape alternate to be uniformly distributed；The end
Ring 2 and conducting bar 4 are casting integrated molding.
As a specific embodiment: the circumferentially-spaced adjacent open slot 111 is 30 ° -90 °.With existing founder
Skill technology is compared, the casting technique that the utility model uses closed slot 112 to combine with open slot 111, and the process requirement is stringent
Pressure and molten state metal temperature when controlling casting, pressure of casting and melt temperature are the key that cast rotor qualities,
In order to guarantee that molten metal liquid smoothly circulates in casting process, need to be arranged together every certain circumferential angle to arrange
Gas, slow down casting rate, reduce stray loss of motor opening rotor bar slot, the circumferential angle selection principle being separated by generally by
Total slot number of the capacity of motor and rotor bar slot determines.
Further, as optimization, the circumferentially-spaced adjacent open slot 111 is 30 °, 45 °, 60 ° or 90 °.In selection
Integer value positioning easy to process and mold manufacture are stated, on the compound press tool of rotor iron core lamination, Punches are equipped with and open on a small quantity
Mouth slot formed punch, the overwhelming majority are closed slot formed punch, the complexity of increase mold that will not be excessive and the cost of mold.
As a specific embodiment: the end ring 2 uses cast aluminium alloy gold material with conducting bar 4.End ring 2 is adopted with conducting bar 4
It is integrally formed by way of pressure casting with cast aluminium alloy gold material, it is lower that cast aluminium material compares other melting point metals, pressure
Required pressure is smaller when casting, is easy to operate and control cost；Cast aluminium conducting bar is applied widely, is applicable to large, medium and small electronic
Machine rotor.
As a specific embodiment: the rotor-core lamination 11 is one time punching molded using silicon steel sheet, the silicon steel
Piece is with a thickness of 0.5mm.Using the integrally formed method processing rotor iron-core lamination 11 of stamping die, it is ensured that its size it is consistent
Property, guarantee the concentricity of inside and outside circle, reduce the outer circle bounce of rotor, makes the neat light in 11 periphery of rotor-core lamination after being stacked
It is sliding, guarantee that resistance does not reduce between rotor-core lamination 11, reduces pulsation loss and high-frequency loss in use process.
As a specific embodiment: the 111 opening width W≤1mm of open slot.The restriction of opening width was both convenient for
It is vented in time in casting process, and reduces the spilling of molten aluminum.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. threephase asynchronous die casting structure, it is characterised in that: the rotor including stacked rotor-core lamination (11) composition
Iron core (1), across rotor bar slot conducting bar (4), pass through rotor shaft hatch (113) rotating assembly (3) and be set to rotor iron
The end ring (2) at core (1) both ends；
The rotor-core lamination (11) is uniformly distributed circumferentially multiple conducting bar slots, and the conducting bar slot is mostly closed slot (112),
One open slot (111) is set after certain circumferential angle, closed slot (112) formation after the rotor-core lamination (11) is stacked
Channel be silent rotor bar slot, open slot (111) formed channel be opening rotor bar slot；
End ring (2) endface has multiple small fan blades (21) and balance columns (22), the small fan blade (21) and balance columns
(22) annularly alternate to be uniformly distributed；
The end ring (2) and conducting bar (4) are casting integrated molding.
2. threephase asynchronous die casting structure according to claim 1, it is characterised in that: the adjacent open slot
(111) circumferentially-spaced is 30 ° -90 °.
3. threephase asynchronous die casting structure according to claim 2, it is characterised in that: the adjacent open slot
(111) circumferentially-spaced is 30 °, 45 °, 60 ° or 90 °.
4. threephase asynchronous die casting structure according to claim 1, it is characterised in that: the end ring (2) and conducting bar
(4) cast aluminium alloy gold material is used.
5. threephase asynchronous die casting structure according to claim 1, it is characterised in that: the rotor-core lamination
(11) one time punching molded using silicon steel sheet, the silicon steel sheet is with a thickness of 0.5mm.
6. threephase asynchronous die casting structure according to claim 1, it is characterised in that: the open slot (111) is opened
Width W≤1mm at mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821774281.6U CN208874377U (en) | 2018-10-30 | 2018-10-30 | Threephase asynchronous die casting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821774281.6U CN208874377U (en) | 2018-10-30 | 2018-10-30 | Threephase asynchronous die casting structure |
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| Publication Number | Publication Date |
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| CN208874377U true CN208874377U (en) | 2019-05-17 |
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| CN201821774281.6U Active CN208874377U (en) | 2018-10-30 | 2018-10-30 | Threephase asynchronous die casting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021286A1 (en) * | 2022-07-29 | 2024-02-01 | 天蔚蓝电驱动科技(江苏)有限公司 | Graphene conductive bar squirrel-cage three-phase asynchronous motor |
-
2018
- 2018-10-30 CN CN201821774281.6U patent/CN208874377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021286A1 (en) * | 2022-07-29 | 2024-02-01 | 天蔚蓝电驱动科技(江苏)有限公司 | Graphene conductive bar squirrel-cage three-phase asynchronous motor |
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