CN106712340A - Damping ring for multi-section aluminum-casting rotor and processing method of aluminum-casting rotor - Google Patents
Damping ring for multi-section aluminum-casting rotor and processing method of aluminum-casting rotor Download PDFInfo
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- CN106712340A CN106712340A CN201710113925.0A CN201710113925A CN106712340A CN 106712340 A CN106712340 A CN 106712340A CN 201710113925 A CN201710113925 A CN 201710113925A CN 106712340 A CN106712340 A CN 106712340A
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- rotor
- cast
- ring
- aluminum
- aluminium
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Classifications
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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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Induction Machinery (AREA)
Abstract
The invention discloses a damping ring for a multi-section aluminum-casting rotor. The damping ring comprises an outer-layer aluminum ring and an inner-layer silicon-steel ring, wherein the aluminum ring is provided with aluminum-casting through grooves which are distributed in a ring-shaped structure at equal intervals; a grooving rib is formed between two adjacent aluminum-casting through grooves; and the quantity of the grooving ribs is an approximate number of the quantity of rotor groove bodies. The invention also discloses a method for processing the multi-section aluminum-casting rotor by using the damping ring, and a stator. According to the damping ring, the method and the stator disclosed by the invention, the uniform stressing on a punching sheet with superimposed iron cores is guaranteed, the superimposition quality of the iron cores is improved, the overflowing and the bubbles of aluminum are solved, and the quality and the reliability of the aluminum-casting rotor are improved.
Description
Technical field
The present invention relates to calutron technical field, more particularly to a kind of damping ring, cast aluminium to multistage cast-aluminum rotor
The processing method of rotor.
Background technology
Motor skewed slot can effectively weaken harmony wave, so as to reduce vibration and noise, therefore be widely used.At some
Special occasions, such as precision machine tool are extremely strict to the vibration of motor and noise requirements, conventional use of monocline slot structure without
Method meets and requires, at this moment generally divide the rotor into two sections or four sections respectively skewed slot reach more preferable effect.Turn for multistage
Sub conventional manufacture method is to cast each section respectively to complete and then be welded into an entirety by each section, and manufacturing process is more complicated
And process relatively difficult, cast-aluminum rotor quality is difficult to ensure.The integration casting of multistage skewed rotor is a difficult point.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided a kind of damping ring for multistage cast-aluminum rotor, is damped using this
Ring multistage cast-aluminum rotor once can casting, and ensure that iron core laminating punching uniform force, improve iron core laminating matter
Amount, solves the excessive and bubble of aluminium, improves the q＆r of cast-aluminum rotor.In addition, the present invention is also provided in one kind
State method, stator that damping ring processes multistage cast-aluminum rotor.
The present invention realizes solving above-mentioned technical problem by following technological means：A kind of resistance to multistage cast-aluminum rotor
Buddhist nun's ring, the damping ring includes the aluminium ring of outer layer and the silicon steel ring of internal layer；Cast aluminium groove is provided with the aluminium ring, several
The cast aluminium groove is equally spaced structure in a ring；Fluting muscle is formed between the two neighboring cast aluminium groove；The fluting muscle
Quantity for rotor cell body quantity approximate number.
Preferably：The cast aluminium groove be sector structure, several described cast aluminium grooves be equally spaced in damping ring in
The concentric loop configuration of the heart.
A kind of method that multistage cast-aluminum rotor is processed using above-mentioned damping ring, is comprised the following steps：
(1) by rotor core, damping ring stacked spaced apart, and ensure that fluting muscle is shifted to install with notch；
(2) during cast aluminium, from the end injection of the rotor core positioned at initiating terminal, aluminium water flows into the casting on first damping ring
Aluminium groove enters next section of rotor core, then flows into next damping ring, and order is until flow into turning positioned at end successively
Sub- iron core.
Preferably, two relative reverse skews of cell body of position are in herringbone in two neighboring rotor core.
Preferably, two cell bodies reverse skew of dislocation that position is relative in two neighboring rotor core.
Preferably, the quantity of the rotor core is even number and at least four.
Preferably, the bottom land of the rotor core is in bifurcation structure.
Preferably, the cell body of the rotor core is straight trough；Two relative cell body mistakes of position in adjacent two rotor cores
Position is set.
A kind of stator being adapted to above-mentioned cast-aluminum rotor, the teeth portion of the stator is provided with arc groove.
The advantage of the invention is that：The present invention using this damping ring multistage cast-aluminum rotor once can casting, and protect
Iron core laminating punching uniform force is demonstrate,proved, iron core laminating quality has been improve, the excessive and bubble of aluminium has been solved, cast aluminium has been improve and is turned
The q＆r of son.In addition, the quantity of fluting muscle is the approximate number of rotor cell body quantity and simultaneously ensures that fluting muscle is wrong with notch
Bit distribution, so, when laminating, fluting cross dystopia of muscle and tendon opens the notch of silicon steel sheet, prevents aluminium liquid to be obstructed.
Because the resistivity representative value of aluminium is 2.83 × 10-8(Ω m), the resistivity representative value of steel is 9.78 × 10-8
(Ω m), it can be seen that, when concentric ring is material steel, the resistance of the bigger damping ring of its occupied area is also bigger.Concentric ring material
Resistance can be reduced more than 20% during using aluminium.The loss of motor can be effectively reduced, the efficiency of motor is improved.Further, originally
The density of the aluminium of invention is 2.7 × 103Kg/m3, the density 7.8 × 10 of steel3Kg/m3, the weight of concentric ring can when material uses aluminium
Nearly 2/3rds are reduced, so as to reduce the gross weight of motor.
Brief description of the drawings
Fig. 1 is the structural representation of damping ring in the present invention.
Fig. 2 is the side structure schematic diagram of straight trough rotor in the present invention.
Fig. 3 is the side structure schematic diagram of skewed rotor in the present invention.
Fig. 4 is the end face structure schematic diagram of skewed rotor in the present invention.
Fig. 5 is the structural representation of stator in the present invention
Specific embodiment
To further describe the present invention, it is described further with reference to embodiment.
Embodiment 1
As shown in figure 1, a kind of damping ring to multistage cast-aluminum rotor, aluminium ring and internal layer of the damping ring including outer layer
Silicon steel ring 22.Cast aluminium groove 211 is provided with aluminium ring, several cast aluminium grooves 211 are equally spaced structure in a ring；It is two neighboring
Region between the cast aluminium groove forms fluting muscle 212.Several cast aluminium grooves 211 are formed and cast aluminium groove each other
211 quantity identicals fluting muscle 212, the quantity of muscle 212 of slotting is the approximate number of rotor cell body quantity.
Preferably, cast aluminium groove 211 is sector structure, and several cast aluminium grooves are equally spaced in concentric with damping ring center
Loop configuration.
The external diameter of damping ring is consistent with rotor diameter, and the width of muscle of slotting is about 2~4mm, same for connecting support
The inner and outer ring of heart aluminium ring, the inside and outside 1~3mm of ring thickness of concentric type aluminium ring, the internal diameter of interior aluminium ring it is consistent with the external diameter of silicon steel ring and
Less than on the distance between two symmetrical rotor slot bottoms of the rotor center of circle.The internal diameter of silicon steel ring is the equal diameters with rotating shaft.
Embodiment 2
As shown in Fig. 2 the present embodiment includes two sections of isometric the first rotor iron cores 1, second rotor cores 3, elder generation when laminating
The first iron core of rotor 1 is folded, the rotor core 3 of damping ring 2 and second is then laminated into one entirety of formation up, it is ensured that fluting
Muscle is shifted to install with iron core cell body.During cast aluminium, from the 1 end injection of the first rotor iron core, aluminium water is by the first rotor iron core 1 for aluminium water
Enter rotor core 3, casting through the fan-shaped cast aluminium groove of the concentric type aluminium ring of damping ring 2 during with the interface of the second rotor core 3
After the completion of making, the fan-shaped cast aluminium groove that aluminium water fills up concentric type aluminium ring forms complete aluminium ring, by each section of sliver connection of rotor
Into an entirety, and cast aluminium end ring 4 is formed in overall end, can once complete the casting of multipiece rotor.The present embodiment
The first rotor iron core 1, the cell body of the second rotor core 3 are straight trough.
The computing formula of the resistance when damping ring external concentric ring uses aluminium for
R is damping loop resistance, ρAlIt is the resistivity of aluminium, l is damping ring length, and s is the sectional area of damping ring.
Resistance when the damping ring entirety all steel of material is
Whereinl1The length shared by aluminium, s1The sectional area shared by aluminium, l2The length shared by steel, s2It is steel institute
Account for sectional area, ρFeIt is the resistivity of steel.
The ratio of the two is
The resistivity representative value of aluminium is 2.83 × 10-8(Ω m), the resistivity representative value of steel is 9.78 × 10-8(Ω·
M), it can be seen that, when concentric ring is material steel, the resistance of the bigger damping ring of its occupied area is also bigger.Concentric ring material is used
Resistance can be reduced more than 20% during aluminium.The loss of motor can be effectively reduced, the efficiency of motor is improved.
Further, the density of aluminium is 2.7 × 103Kg/m3, the density 7.8 × 10 of steel3Kg/m3, it is same when material is using aluminium
The weight of thimble can reduce nearly 2/3rds, so as to reduce the gross weight of motor.
Embodiment 3
As shown in figure 3, the present embodiment includes four sections of isometric the first rotor iron cores 1, second rotor cores 3, third trochanter
Unshakable in one's determination 5, fourth trochanter iron core 7, the first damping ring 2, the second damping ring 4, the 3rd damping ring 6, first by first turn of rotor when laminating
Sub unshakable in one's determination 1 folds, and then laminates the first damping ring 2 and the second rotor core 3 up, then by the second damping ring 4 and the 3rd turn
Sub unshakable in one's determination 5 laminate up, finally the 3rd damping ring 6 and rotor four-limbed 7 are laminated into one entirety of formation up, it is ensured that fluting
Muscle is shifted to install with iron core cell body.During cast aluminium, from the 1 end injection of the first rotor iron core, aluminium water is by the first rotor iron core 1 for aluminium water
Fan-shaped cast aluminium groove during with the interface of the second rotor core 3 through the concentric type aluminium ring of the first damping ring 2 enters the second rotor iron
The heart 3, third trochanter iron core 5 is entered after flowing through the second damping ring 4, and fourth trochanter iron core is entered after continuing through the 3rd damping ring 6
7, after the completion of casting, the fan-shaped cast aluminium groove that aluminium water fills up concentric type aluminium ring forms complete aluminium ring, by each section of sliver of rotor
An entirety is connected into, and cast aluminium end ring 8 is formed in overall end, can once complete the casting of multipiece rotor.
As shown in figure 4, each cell body unshakable in one's determination 101 of the present embodiment is skewed slot.Position phase in two neighboring rotor core
To the reverse dislocation skew of cell body 101, the bottom of cell body 101 is in bifurcation structure.
The present invention has advantages below：It is in the skewed rotor of bifurcation structure using bottom, and coordinates multiple " people " fonts to turn
Substring connection can then form class " wave " shape rotor, make radial direction Reeb that phase shift occur along the axis in motor length direction, vertically
The reduction of average radial power, effectively weakens the slot ripples synchronous additional torque of reduction, solves the starting problem for waiting groove cooperation；Determine, turn
The grooves such as son coordinate, and the added losses of motor are minimum, and efficiency is improved.
Embodiment 4
As shown in figure 5, a kind of stator being engaged with the rotor of above-described embodiment, rotor is installed in stator.Stator and
Rotor slot number is equal, and the teeth portion of stator is provided with arc groove 51.Stator teeth is provided with arc groove 51 so that air gap flux density is more
Sine, reduces harmonic loss.
Embodiment 5
As in Figure 3-5, a kind of motor, including casing, stator, cast-aluminum rotor, rotating shaft.Stator is arranged on the inside of casing
In cavity, cast-aluminum rotor is built-in in the stator and to be fixedly mounted in rotating shaft.Rotating shaft runs through shell, is rotated with shell and is connected.It is fixed
Sub- teeth portion is provided with arc groove 51 so that air gap flux density is more sinusoidal, reduces harmonic loss.
The slot number of rotor is identical with the slot number of stator.The teeth portion of stator is provided with arc groove 51.As shown in figure 3, this implementation
Example includes four sections of isometric the first rotor iron cores 1, the second rotor core 3, third trochanter iron core 5, fourth trochanter iron cores 7, first
Damping ring 2, the second damping ring 4, the 3rd damping ring 6, first fold rotor the first rotor iron core 1 when laminating, then by the first resistance
The rotor core 3 of Buddhist nun's ring 2 and second is laminated up, then the second damping ring 4 and third trochanter iron core 5 are laminated up, finally by
Three damping rings 6 and rotor four-limbed 7 laminate one entirety of formation up.During cast aluminium, aluminium water is noted from 1 end of the first rotor iron core
Enter, aluminium water is when by the first rotor unshakable in one's determination 1 and the interface of the second rotor core 3 through the concentric type aluminium ring of the first damping ring 2
Fan-shaped cast aluminium groove enters the second rotor core 3, and third trochanter iron core 5 is entered after flowing through the second damping ring 4, continues through the 3rd
Enter fourth trochanter iron core 7 after damping ring 6, after the completion of casting, the fan-shaped cast aluminium groove that aluminium water fills up concentric type aluminium ring has been formed
Whole aluminium ring, an entirety is connected into by the sliver of each section of rotor, and forms cast aluminium end ring 8 in overall end, once
Complete the casting of multipiece rotor.
Each cell body unshakable in one's determination 101 of the present embodiment is skewed slot.The relative cell body 101 in position in two neighboring rotor core
Reversely misplace skew, and the bottom of cell body 101 is in bifurcation structure.
Embodiment 6
A induction machine based on embodiment 5, its power is 5kW, and number of poles is 4, motor stator external diameter 210mm, length
120mm, slot number is 36, and stator teeth is provided with arc groove, for modulating air-gap field.Table 1 is recessed for stator tooth whether there is arc
The performance comparison of groove.
Table 1
Cast-aluminum rotor slot number is 36, and total length is 120mm, and the relative cell body in position is anti-in turn two neighboring rotor core
Stagger 5 degree to dislocation, each segment length is 58mm, and it is 29mm that big section of each of which is divided into two segments per segment length again, on every
Section intermediate symmetry and reversely oblique bsk=5.9mm.
Analyzed according to harmonic field, if stator harmonic wave vbWith rotor harmonic wave μa(as produced by another stator harmonic wave) number of times phase
Together, direction is identical, then both produce synchronous additional torques when rotating speed is 0, starting torque fluctuation or dead point is occurred, motor without
Method is started.Because the amplitude of stator and rotor slot ripples is larger, synchronous additional torque is main to be determined by fixed/rotor slot ripples.When grade groove
During cooperation, each order number all same of stator and rotor slot ripples, synchronous additional torque is maximum, and motor cannot be started.Using special skewed slot
After rotor, the rotor slot ripples of different sections mutually can effectively offset, and rotor slot ripples be eliminated significantly, now rotor slot ripples
Value very little, the value also very little of the synchronous additional torque produced with the effect of stator slot ripples, now to the shadow of electric motor starting torque
Sound can be ignored, therefore motor can be with normal starting.
The bottom of the cell body of iron core is in bifurcation structure, can increase kelvin effect during starting, improves starting performance.Table 2
It is to use the performance comparison before and after bifurcation structure cell body.
Table 2
| Common groove profile | Bifurcation structure groove | |
| Average starting torque | 103N·m | 104.7N·m |
| Mean starting current | 76A | 74.3A |
From the results, it was seen that electric motor starting when motor of the invention can solve the problems, such as etc. that groove coordinates completely, so that
Can using etc. groove coordinate and reduce motor added losses.
According to harmonic field analyze, each section of slot ripples phase of rotor just conversely, slot ripples produced in each section it is humorous
Ripple torque is cancelled out each other, and the purpose of vibration noise is reduced so as to reach.Compared with when straight trough, the acoustical power of motor of the invention is adopted
The value that can be reduced is about
Δ L=20lg [Ksk cos(uα/2)]
K in formulaskIt is skew slot factor, μ is harmonic field number of times, and α is rotor offset angular.
After using " wave " shape skewed rotor, when straight trough compared with noise reduction value it is as shown in table 3 below,
Table 3
| Single order slot ripples | Second order slot ripples | |
| Sound pressure level decreasing value (decibel) | 13.2 | 11.3 |
As can be seen that induction machine of the invention can substantially reduce noise.
The preferred embodiment of the invention is these are only, creation is not intended to limit the invention, it is all in the present invention
Any modification, equivalent and improvement made within the spirit and principle of creation etc., should be included in the guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of damping ring to multistage cast-aluminum rotor, it is characterised in that：The aluminium ring of the damping ring including outer layer and interior
The silicon steel ring of layer；Cast aluminium groove is provided with the aluminium ring, several described cast aluminium grooves are equally spaced structure in a ring；It is adjacent
Region between two cast aluminium grooves forms fluting muscle；The quantity of the fluting muscle is the approximate number of rotor cell body quantity.
2. the damping ring to multistage cast-aluminum rotor according to claim 1, it is characterised in that：The cast aluminium groove is fan
Shape structure, several described cast aluminium grooves are equally spaced in the loop configuration concentric with damping ring center.
3. a kind of method that damping ring using as described in claim any one of 1-2 processes multistage cast-aluminum rotor, its feature exists
In comprising the following steps：
(1) by rotor core, damping ring stacked spaced apart, and ensure that fluting muscle is shifted to install with notch；
(2) during cast aluminium, from the end injection of the rotor core positioned at initiating terminal, the cast aluminium that aluminium water is flowed on first damping ring leads to
Groove enters next section of rotor core, then flows into next damping ring, and order is until flow into the rotor iron positioned at end successively
Core.
4. it is according to claim 3 processing multistage cast-aluminum rotor method, it is characterised in that in two neighboring rotor core
Two relative reverse skews of cell body of position are in herringbone.
5. it is according to claim 4 processing multistage cast-aluminum rotor method, it is characterised in that in two neighboring rotor core
The relative two cell bodies reverse skew of dislocation in position.
6. it is according to claim 4 processing multistage cast-aluminum rotor method, it is characterised in that the quantity of the rotor core
For even number and at least four.
7. it is according to claim 1 processing multistage cast-aluminum rotor method, it is characterised in that the bottom land of the rotor core
In bifurcation structure.
8. it is according to claim 3 processing multistage cast-aluminum rotor method, it is characterised in that the cell body of the rotor core
It is straight trough；Two relative cell bodies of position are shifted to install in adjacent two rotor cores.
9. the stator that a kind of cast-aluminum rotor with described in claim 3-8 is adapted to, it is characterised in that：The teeth portion of the stator is provided with
Arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113925.0A CN106712340A (en) | 2017-02-28 | 2017-02-28 | Damping ring for multi-section aluminum-casting rotor and processing method of aluminum-casting rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113925.0A CN106712340A (en) | 2017-02-28 | 2017-02-28 | Damping ring for multi-section aluminum-casting rotor and processing method of aluminum-casting rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106712340A true CN106712340A (en) | 2017-05-24 |
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ID=58917382
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710113925.0A Pending CN106712340A (en) | 2017-02-28 | 2017-02-28 | Damping ring for multi-section aluminum-casting rotor and processing method of aluminum-casting rotor |
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| CN (1) | CN106712340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094206A (en) * | 2023-03-08 | 2023-05-09 | 四川宜宾力源电机有限公司 | Motor using rotor and gap trend calculation method of rotor and stator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002218723A (en) * | 2001-01-19 | 2002-08-02 | Fujitsu General Ltd | Rotor for induction motor |
| US20130049517A1 (en) * | 2011-08-30 | 2013-02-28 | Siemens Industry, Inc. | Induction machine rotor slot and forming method |
| CN202856577U (en) * | 2012-09-28 | 2013-04-03 | 河北电机股份有限公司 | Three-phase asynchronous motor |
| CN103501065A (en) * | 2013-10-10 | 2014-01-08 | 中国船舶重工集团公司第七一二研究所 | Chute low-noise motor |
-
2017
- 2017-02-28 CN CN201710113925.0A patent/CN106712340A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002218723A (en) * | 2001-01-19 | 2002-08-02 | Fujitsu General Ltd | Rotor for induction motor |
| US20130049517A1 (en) * | 2011-08-30 | 2013-02-28 | Siemens Industry, Inc. | Induction machine rotor slot and forming method |
| CN202856577U (en) * | 2012-09-28 | 2013-04-03 | 河北电机股份有限公司 | Three-phase asynchronous motor |
| CN103501065A (en) * | 2013-10-10 | 2014-01-08 | 中国船舶重工集团公司第七一二研究所 | Chute low-noise motor |
Non-Patent Citations (1)
| Title |
|---|
| 鲍晓华等: "笼型感应电机转子斜槽研究综述及展望", 《电工技术学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094206A (en) * | 2023-03-08 | 2023-05-09 | 四川宜宾力源电机有限公司 | Motor using rotor and gap trend calculation method of rotor and stator |
| CN116094206B (en) * | 2023-03-08 | 2023-06-23 | 四川宜宾力源电机有限公司 | Motor using rotor and gap trend calculation method of rotor and stator |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |