CN101651387B - Method for producing rotor and rotor lamination structure for producing rotor of asynchronous motor - Google Patents
Method for producing rotor and rotor lamination structure for producing rotor of asynchronous motor Download PDFInfo
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- CN101651387B CN101651387B CN200910167013.7A CN200910167013A CN101651387B CN 101651387 B CN101651387 B CN 101651387B CN 200910167013 A CN200910167013 A CN 200910167013A CN 101651387 B CN101651387 B CN 101651387B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000003475 lamination Methods 0.000 title abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 105
- 239000004020 conductor Substances 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 97
- 238000000034 method Methods 0.000 claims description 19
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- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
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- 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
- H02K15/0012—Manufacturing cage rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
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- Manufacturing & Machinery (AREA)
- Induction Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a method for producing a rotor and a rotor lamination structure for producing the rotor of an asynchronous motor. Specifically, a method for producing the rotor of the asynchronous motor is provided, wherein, a rotor core (7) is formed by stacked sheet material metal elements(8), openings of the stacked sheet material metal elements (8) are laminated one another to form a slit, in which the conductive materials are cast to form short circuit rings (12, 13) at two front sides of the rotor core (7). For the realization of good efficiency and mass production, an annular channel (20) surrounding a central axis (370 is arranged in the region of the axial end of the rotor core(7), and has an opening in the direction of axial end and is filled with conductive materials, and a radial inner wall (25) of the annular channel (20) is removed.
Description
Technical field
The present invention relates to a kind of method of making asynchronous motor rotor, wherein, make the rotor core that is consisted of by stacking sheet metal element, opening is arranged to cover over each other to form slit, electric conductor is cast in this slit, thereby forms short-circuited conducting sleeve in two front sides of this rotor core (front side).
In addition, the invention still further relates to the rotor pack structure for the manufacture of asynchronous motor rotor, it comprises some stacking sheet metal elements, and opening is arranged to cover over each other to form slit.
Background technology
In asynchronous motor, rotating magnetic field is created in the stator winding.Rotating magnetic field induces electric current in rotor, described electric current can generate magnetic field.In brief, from the rotating magnetic field of stator then with the magnetic field in the rotor, so that rotor begins to rotate.In this connected, the rotor core of rotor comprised that magnetic conductance leads to material, is preferably independent, stacking sheet metal element, and it is electric insulation relative to each other, to prevent the generation of vortex flow.On the contrary, rotor current should be formed on the conductor that is arranged in slit.In order to allow " backflow ", be furnished with short-circuited conducting sleeve two front sides.This embodiment itself is known.
But, with rotor (because usually for example be used in the situation of drive motor of the coolant compressor that sealing surrounds, so this rotor is only by a bearings) connection in, guiding in order to can realize best current flowing to short-circuited conducting sleeve and conductor is difficulty relatively.Particularly locate at short-circuited conducting sleeve (it is adjacent to the bearing pedestal that has carried rotor shaft bearings), flow around this bearing pedestal because electric current is essential, relatively long distance is in order to arrive another conductor from a conductor so electric current has to flow.This has negative influence to efficient.
DE 692 06 626 T2 have described the favorable factor that the electric conductor with different cross section is provided at the axial length of rotor, and wherein this electric conductor is made by electric conducting material.Electric conductor holds in the zone of bearing than have less cross section in all the other zones at rotor.
US 2007/0069601 A1 has described and has been the motor performance of raising the efficiency and realize to improve, and the possibility of the rotor short-circuit ring with curved surface is provided in the zone adjacent to bearing pedestal.
DE 602 18 217 T2 have described the possibility that relies on die casting to process to make rotor, the slit in the rotor pack structure are filled up electric conducting material (for example, liquid aluminium) during described manufacturing, and make simultaneously short-circuited conducting sleeve.
Summary of the invention
The present invention is based on such task,, realizes the good efficiencies relevant with production in enormous quantities that is.
The method that employing is mentioned in introduction, this task is solved, and wherein generates the annular channel around central axis in the axial end region of rotor core, and this annular channel is along the direction opening of this axial end portion, and be filled electric conducting material, the inner radial wall of this annular channel is removed subsequently.
Adopt the method, the axially-extending section of making short-circuited conducting sleeve, this axially-extending section is disposed in the axial end portion place of this rotor core, and this extension extends in the hole of rotor, is furnished with at last armature spindle in this hole.Like this, at the possible minimum diameter place of rotor, but obtain to have relatively heavy in section electric conductor, although so that electric current will or center on the flows outside of this bearing pedestal, but can be along relatively short path.When only when the axial front side of rotor core provides short-circuited conducting sleeve, in any case this path is all shorter than any path that may exist.But, the manufacturing of such short-circuited conducting sleeve extension is not to be no problem, particularly with for the needed large-scale production of the used asynchronous motor of the coolant compressor that seals encirclement when relevant.Owing in the rotor pack structure, be formed with annular channel, so can make easily this extension.Therefore, this annular channel is exactly mould, makes therein the extension of short-circuited conducting sleeve.Subsequently, when for example electric conducting material has hardened, can remove the inwall of this annular channel, so that in fact extension is disposed in the possible minimum diameter place of rotor, this possible minimum diameter is also determined by bearing pedestal.Because no longer include available rotor region (such rotor region may affect magnetic field in the mode of not expecting) at the radially inner side of short-circuited conducting sleeve extension (and therefore at radially inner side of this short-circuited conducting sleeve), so can cause favourable magnetic situation.
Preferably, annular channel is formed with the depressed part of some radially outwardly projectings in its circle wall.Like this, when electric conducting material was injected into annular channel, this electric conducting material also entered into these depressed parts, therefore, said in a sense, had engaged rotor core.Thus, the extension opposing of protection winding head is with respect to the rotor core rotation, and this processes further processing the favorable influence effect.
Preferably, by with circular sheet metal plate each other one be stacked on and make annular channel on another.Advantageously, these circular sheet metal plate have the same thickness the same with the sheet metal element that forms corresponding rotor core axial direction part.By with sheet metal element and circular sheet metal plate each other simply against compression, just can realize in the axial direction desired thickness, and so that can not be penetrated between each independent sheet metal element or between the circular sheet metal plate at electric conducting material during the injection-mould casting, but slit and annular channel are filled up electric conducting material.
Preferably circular sheet material sheet-metal is become the part of sheet material hardware, rely on the step (steps) that radially from inside to outside extends that circular sheet metal plate is connected to the sheet metal element, the certain angle of wherein stacking sheet metal element relative to each other being setovered by this way namely has predetermined angular distance along their step of circumferencial direction.Therefore, guaranteed that circular sheet metal plate has the thickness the same with the sheet metal element.Rely on these steps that preferably extends along radial direction, circular sheet metal plate is fixed on the sheet metal element.If now all sheet metal stacked elements are got up, these steps will just what a be positioned on another, will produce so the discontinuities of annular channel along axial direction.Thus, independent sheet metal element is setovered with predetermined angular distance along circumferencial direction, so that electric conducting material can free diffusing in annular channel, and along the circumferential direction formed continuous electric conductor.Like this, the independent step with less cross section neither can flow by disturbance current, also can not disturb the magnetic characteristic of rotor core.In a word, when circular sheet metal plate is removed after a while (namely, when the inner radial wall of annular channel is removed), only in the extension of short-circuited conducting sleeve, keep lucky material area, this material is generally the ferrous metal sheet material, and circular sheet metal plate is made by this material.
Preferably, rely on cut to remove this inwall, particularly boring or turning.Such cut is a kind of simple approach of removing inwall, also is like this about production in enormous quantities the time.It only needs to select to arrive at the bore diameter of annular channel inside.Boring or turning (perhaps other processing) afterwards, formed the circumference in the hole in the previous annular channel zone by electric conductor.Then, this rotor pack structure can be continued to extend in the inboard of this electric conductor does not have in the inside of step.
In substituting embodiment, provide the annular channel that relies on the mould rotor core to form.When in electric conducting material is molded to slit, (forming short-circuited conducting sleeve in two front sides of rotor core thus), in any case all must use the mould that defines the short-circuited conducting sleeve external shape.This mould can arrange now and be inserted in the interior mold core of rotor pack structure centre opening, here this mold core can, sealed step for example.When electric conducting material then was injected in the slit, this mold core was formed for the inwall of annular channel, can assemble electric conducting material in this annular channel.This is a kind of plain mode of making inside short-circuited conducting sleeve axially-extending section.After the die casting process finishing, from rotor, extract this mold core.Depend on whether die casting processing has realized the desired shape of short-circuited conducting sleeve axially-extending section, can just so keep this axially-extending section, perhaps the hole is processed, for example by boring or cutting.
Preferably, at least one sheet metal element is disposed in the zone of axial inner ends of annular channel, and described sheet metal element comprises the vent passages that at least one radially outward guides.Such vent passages can guarantee that annular channel almost completely fills up electric conducting material during die casting.If for example aluminium or other motlten metal are injected into annular channel, the air that then exists in the annular channel can escape into the outside via this vent passages.Then, electric conducting material will also can be filled this vent passages.But, because vent passages has the cross section of less, so the electric conducting material in the vent passages will be only at acceptable degree disturbing magnetic field.
Preferably, vent passages terminates in the slit.This has such advantage, namely needn't provide slit radially in the sheet metal element of correspondence, because so do the mechanical stability that may damage the sheet metal element again.On the contrary, the sheet metal element does not interrupt between independent slit.
Preferably, via axial passage vent passages is connected to annular channel, and fills up electric conducting material, remove inwall and also can remove the interior electric conducting material of axial passage.This has such advantage, namely can not be connected between the radially outer of rotor core or slit internal conductance body and short-circuited conducting sleeve extension.On the contrary, during the electric conductor that exists in removing axial passage, this connection will be broken.
Preferably, for the generation of vent passages, the certain area of sheet metal element is removed, and a metal sheet is inserted in the opening that forms thus, and described metal sheet has predetermined distance to the edge of this opening.Adopt the method, the cross section of vent passages can be made less, and need not to use expensive stamping tool.For example, can make this opening by punching press.
Preferably, at the inner sheet metal element that uses of rotor core, this sheet metal element has central opening, and the internal diameter of this opening is greater than the external diameter of the axle that is connected to this rotor core.The internal diameter of this expansion allows, and for example, cutting tools can extend in the rotor pack structure relatively depths, and can not damage the sheet metal element, and this sheet metal element is fixed on this armature spindle the most at last.
Employing mentioned rotor pack structure in introduction, this task is solved, and the annular channel around central axis wherein radially is provided in opening.
As mentioned above, about making processing, during injecting electric conducting material in the slit (that is, during electric conducting material is made), filling up annular channel with electric conducting material simultaneously is possible with the short-circuited conducting sleeve extension of making this axial end portion place that is positioned at the rotor pack structure.After a while, the inner radial wall of this annular channel can be removed, so that in fact the electric conducting material that is present in the annular channel forms the short-circuited conducting sleeve extension that is disposed in possible minimum diameter place.
Preferably, annular channel has the depressed part of some radially outwardly projectings in its circle wall.In the time of in electric conducting material is injected into annular channel, these depressed parts also are filled.Like this, when electric conducting material hardened, this caused electric conducting material engage rotator core.This joint causes the electric conducting material in this annular channel to have relatively large resistance for the rotation of resisting with respect to this rotor core.Therefore, can adopt cutting deformation to remove the inner radial wall of annular channel, and not have such risk, i.e. the rotation of the electric conducting material in the annular channel will cause tearing from short-circuited conducting sleeve the extension of this short-circuited conducting sleeve.
Preferably pass annular channel by the step that from inside to outside radially extends, the step of described adjacent sheet hardware has distance predetermined angular distance each other.It is possible that these steps make the inner radial wall of the annular channel that forms circular sheet metal plate, wherein should the circle sheet metal plate be connected to the sheet metal element.This has such advantage, be that circular sheet metal plate has the thickness the same with the sheet metal element, so that when the stacking sheet material hardware, annular channel also forms simultaneously, and this annular channel is tight just as slit for the electric conducting material that is injected into.Because step is relative to each other setovered along circumferencial direction, so electric conducting material injection subsequently can cause not having in a circumferential direction the electric conductor of interruption, and form the extension of short-circuited conducting sleeve.
Preferably, step is radially outward tapered.Like this, they can enough stably be fixed to the sheet metal element with circular sheet metal plate.Then, when removing circular sheet metal plate, and when a part that has been injected into the electric conducting material in the annular channel also is removed, the wider portion of step also will be removed along circumferencial direction, so that the remainder of step no longer has significant electrical effect or magnetic effect in the rotor that machines.
Preferably, at least one the sheet metal element on the axial inboard of annular channel has at least one towards the vent passages of outside opening.Like this, this at least one toward the outer side the vent passages of opening can guarantee that when filling up annular channel with electric conducting material the air in the annular channel can be escaped choosing.Thus, form the risk less that bubble or gas comprise in the electric conductor of in annular channel, making.
Preferably, vent passages terminates in the opening.This means in the slit that vent passages terminates in rotor core.When the die casting for electric conductor, the rotor core vertical non-alignment is arrived its axis, and when annular channel is arranged in the upper end of this rotor core along gravity direction, (for example using electric conducting material, when liquid aluminium) filling annular channel and slit, electric conducting material will flow in annular channel and the slit simultaneously.But, vent passages has opening, and it allows air to escape in annular channel within certain time period, that is to say, until electric conducting material is when having reached the fill level of enclosed ventilation passage in slit or in the corresponding slit.What must suppose is to be completely filled electric conducting material at this moment annular channel.
Preferably, via the axial passage from the inner radial region extension of annular channel vent passages is connected to this annular channel.Like this, vent passages being directly connected to annular channel is not absolute demand just.On the contrary, can produce transition portion by axial passage.This has such advantage, and namely so many material can be removed after a while, so that axial passage and electric conducting material wherein can be removed.Like this, just being connected between the electric conductor in short-circuited conducting sleeve extension and this slit has been interrupted.
Description of drawings
Below, by reference to the accompanying drawings and based on preferred embodiment the present invention is described.
Fig. 1 is the schematic sectional view of asynchronous motor;
Fig. 2 is the view of rotor pack structure;
Fig. 3 is the sectional view of getting according to the line III-III among Fig. 2;
Fig. 4 is the sectional view of getting according to the line IV-IV among Fig. 2;
Fig. 5 is the sectional view of getting according to the line V-V among Fig. 2;
Fig. 6 is the sectional view of getting according to the line VI-VI among Fig. 2;
Fig. 7 is the sectional view that runs through the rotor pack structure of different embodiment;
Fig. 8 is the sectional view of getting according to the line VIII-VIII among Fig. 7;
Fig. 9 is the sectional view of getting according to the line IX-IX among Fig. 7;
Figure 10 is the zoomed-in view of Fig. 9;
Figure 11 is the view of interpretation component;
Figure 12 is perspective view rotor, partial cross section of another embodiment;
Figure 13 is the sheet metal element according to the rotor of Figure 12;
Figure 14 is the amplification sectional view according to Figure 13; And
Figure 15 is the perspective view of the rotor pack structure of another embodiment.
Embodiment
Fig. 1 is the explanatory view with motor 1 of stator 2 and rotor 3.Rotor 3 is non-rotatably connected to axle 4, and this axle 4 is supported in the bearing pedestal 5 in order to can axially and radially rotate around axis 37.Bearing pedestal 5 is parts of the compressor section 6 of refrigerant compressor, and compressor section 6 is not shown specifically in addition.
On two front sides of rotor core 7, rotor 3 has short-circuited conducting sleeve 12,13.Short-circuited conducting sleeve 12,13 connects each other by means of a plurality of electric conductors 14,15, and wherein, electric conductor 14,15 is arranged in the slit 16,17.
Short-circuited conducting sleeve 12 adjacent to bearing pedestal 5 has axially-extending section 19, and this extension 19 extends in the hand-hole 18.Extension 19 provides electric conductor at the possible minimum diameter of rotor 3, can flow around bearing pedestal 5 by this electric conductor electric current.Because extension 19 extends in the hand-hole 18 at certain axial length, can utilize so for electric current, have relatively large cross section, so that total resistance of short-circuited conducting sleeve 12 can be made smaller.The resistance of short-circuited conducting sleeve 12 can affect the all-in resistance in the rotor 3.This resistance (that is, Ohmic resistance) is less, and the efficient of motor 1 is better.
But, during producing in enormous quantities, the manufacturing of extension 19 is relatively more difficult.Therefore, below by the Fig. 2 to 6 about the first embodiment this manufacturing is described.Identical element have with Fig. 1 in the same Reference numeral.
As visible from Fig. 2 to Fig. 6, rotor core 7 is formed by five kinds of different sheet metal elements altogether.Fig. 3 shows sheet metal element 8a, and Fig. 4 shows sheet metal element 8b, and Fig. 5 shows sheet metal element 8c, and Fig. 6 shows sheet metal element 8d.The another kind of sheet metal element once that only exists in whole rotor core 7 is not specifically illustrated.
For all sheet metal elements, something in common is that they all have opening, and these openings are arranged to cover each other, thereby form slit 16,17, arranges electric conductor 14,15 in slit 16,17.But, in sheet metal element 8d, all radially extend internally every one slit, so that can obtain the cross section of electric conductor 14,15 expansion here.
In the final zone adjacent to the short-circuited conducting sleeve 12 of compressor section 6, sheet metal element 8a, 8b comprise annular channel 20, and this annular channel 20 radially inwardly defines by circular sheet metal plate 21.This circle sheet metal plate 21 is connected to sheet metal element 8a, 8b via step 22.Now, be arranged to sheet metal element 8a, a 8b who is positioned on another predetermined angular (two slits that separate of for example setovering) of can relative to each other setovering, so that annular channel 20 (Fig. 2) result can both fill up electric conducting material, and can not interrupted by the wall that step 22 consists of.
As can be from seen in fig. 2, annular channel 20 only extends at a part of longitudinal length of rotor core 7, and for example, about 30% to 40%, perhaps on the only about half of length, bearing pedestal 5 also extends into the inside of rotor core 7 in this length.
Terminate in place in the rotor core at bearing pedestal 5, be provided with some sheet metal element 8c, the diameter with expansion is compared with the hole of other sheet metal element 8a, 8b, 8d in the hole 18 in hardware 8c.Because during the manufacturing of sheet metal element 8a-8d, in independent sheet metal element 8a-8d, form hole 18 by punching press, so the enlarged-diameter here is possible without a doubt.
At axial place, the inner, annular channel 20 is connected to vent passages 24, and this vent passages 24 terminates on the radially excircle of rotor core 7.During the manufacturing of the rotor blank shown in Fig. 2, when the electric conducting material that is in liquid form (for example, liquid aluminium) was injected in the annular channel 20, substituted air can escape into the outside by vent passages 24.Because vent passages 24 has the cross section of less, so air can be escaped choosing.But, when vent passages 24 had been filled electric conducting material, it hardly can (perhaps only in acceptable degree) disturbs the formation in the magnetic field in the rotor core 7 of rotor.
When the electric conducting material of the rotor blank shown in Fig. 2 has hardened, for example, after the corresponding cooling of the liquid aluminium that is injected into, can carry out the processing (for example, by boring or turning) in hole 18 to produce visible different-diameter size among Fig. 1.At this, particularly, remove to form the inside boundary, footpath of annular channel 20 and by circular sheet metal plate 21 formed annular wall 25, so that the electric conducting material of annular channel 20 is along the radially inner side that forms hole 18 that extends axially of annular channel 20.The enlarged-diameter section 26 of the sheet metal element 8c of Fig. 5 allows cutting tools fully axially onwards to be advanced, and can not damage sheet metal element 8d, finally needs this sheet metal element 8d that axle 18 is fixed on rotor core 7 places.
After die casting processing, extension 19, two short-circuited conducting sleeves 12,13 and the electric conductor in slit 16,17 14,15 be connected one to the other to and form together an integral body, extension 19 is no longer delimited by the logical material of the magnetic conductance on radially inner side.
Only there is little gap 27 in direction along bearing pedestal 5 between extension 19 and this bearing pedestal 5, but this gap 27 is enough large, the bearing pedestal 5 so that extension 19 can not swiped.
Fig. 7 to 11 shows the embodiment of modification, and wherein identical element has identical Reference numeral.
With respect to first difference according to the embodiment of Fig. 2 to 6 be, the circular sheet metal plate 21 that forms annular wall 25 is not connected to sheet metal element 8, but make this annular wall 25 by its oneself circular sheet metal plate 21, then this annular wall 25 is inserted in the rotor core 7 to form annular channel 20.But, after annular channel 20 interior injection electric conducting materials, the essential cutting deformation (for example, boring or turning) that passes through is removed annular wall 25 from rotor core 7 again, to form extension as shown in fig. 1.Therefore, annular wall 25 is parts of the effect of not producing.
Another difference is that annular channel 20 is connected to two vent passages 29,30 via axial passage 28, and this vent passages 29,30 terminates in two adjacent slits 31,32.These vent passages 29, the 30th form like this, namely stamp out opening 33 in sheet metal element 8, and metal sheet 34 is inserted in this opening 33.Metal sheet 34 has to the specific range of sheet metal element 8 in its circumferential major part, thereby forms by this way two vent passages 29,30 and axial passage 28.
Figure 12 to 14 shows rotor 3, and this rotor 3 is made to the blank shown in Fig. 6 by Fig. 2.Figure 13 shows sheet metal element 8e to Figure 14, wherein is furnished with the vent passages 24 that leads to the periphery 36 of rotor 3 from extension 19 (having removed annular wall 25 here).This vent passages 24 can, for example, make by laser cutting.In shown rotor 3, can see short-circuited conducting sleeve 12,13 design.Can also see that extension 19 is connected in order to form one with short-circuited conducting sleeve 12, and extend in the hole 18 relatively at a distance.Can also see the enlarged-diameter section 26 that is furnished with, wherein should axially terminate in the rotor core 7 in the zone, this rotor core 7 is processed to remove annular wall 25.
Figure 12 shows the remaining section of step 22.What can see is, the remaining section of these steps 22 does not contact with each other, thereby need not to worry the negative influence to magnetic field.Also appreciable in addition is that electric conducting material is arranged to distribute around step 22, so that form the electric conductor that connects at this.
Figure 15 shows the rotor core 7 of another embodiment of rotor, and it is basically leg-of-mutton to see that wherein step 22 is made into, and they radially outward are tapered.
Among this embodiment, guiding vent passages 24 in opening 15, this opening 15 finally is formed for the slit of electric conductor, and this electric conductor is connected by short-circuited conducting sleeve.Can form simply vent passages 24 by the slit in circular sheet metal plate, that is to say, corresponding to the embodiment according to Figure 13 and 14.Unique difference is that vent passages 24 does not terminate in the radially-outer surface of circular sheet metal plate, but terminates in the opening 15.
Claims (19)
1. make a kind of method of rotor of asynchronous motor, wherein, the rotor core that is made of stacking sheet metal element is made into, these stacking sheet metal elements are by becoming to cover formation slit over each other with aperture arrangement, electric conducting material is cast in the described slit, thereby two front sides at described rotor core form short-circuited conducting sleeve, it is characterized in that: in the zone of the axial end portion of described rotor core, generate the annular channel around central axis, described annular channel is in the direction upper shed of described axial end portion, and be filled described electric conducting material, the inner radial wall of described annular channel is removed subsequently.
2. the method for claim 1, it is characterized in that: described annular channel forms the depressed part of a plurality of radially outwardly projectings in its circle wall.
3. method as claimed in claim 1 or 2 is characterized in that: make described annular channel on another by one of circular sheet metal plate is stacked on.
4. method as claimed in claim 3, it is characterized in that: a part that described circular sheet material sheet-metal is become described sheet metal element, by means of the step that from inside to outside radially extends described circular sheet metal plate is connected to described sheet metal element, described stacking sheet metal element is angle offset relative to each other by this way, and such mode namely is to make the step of described stacking sheet metal element have in a circumferential direction predetermined angular distance.
5. method as claimed in claim 1 or 2 is characterized in that: remove described inwall by means of cut.
6. method as claimed in claim 5 is characterized in that: described cut is boring or turning.
7. method as claimed in claim 1 or 2, it is characterized in that: the core body by means of mould forms described annular channel.
8. method as claimed in claim 1 or 2 is characterized in that: at least one sheet metal element is disposed in the zone of axial inner ends of described annular channel, and described sheet metal element comprises the vent passages that at least one radially outward guides.
9. method as claimed in claim 8, it is characterized in that: described vent passages terminates in the slit.
10. method as claimed in claim 8, it is characterized in that: described vent passages is connected to described annular channel via axial passage, and fills up electric conducting material, and the electric conducting material in the described axial passage is also removed in the removal of described inwall.
11. method as claimed in claim 8, it is characterized in that: for the generation of described vent passages, remove a zone of described sheet metal element, metal sheet is inserted in the opening that forms thus, described metal sheet has to the preset distance at the edge of described opening.
12. method as claimed in claim 1 or 2 is characterized in that: used the sheet metal element with central opening in described rotor core inside, the internal diameter of the central opening of described sheet metal element is greater than the external diameter of the axle that is connected to described rotor core.
13. the rotor pack structure for the manufacture of asynchronous motor rotor, described rotor pack structure comprises a plurality of stacking sheet metal elements, form rotor core, the aperture arrangement of described sheet metal element becomes to cover over each other to form slit, it is characterized in that: the annular channel (20) around central axis (37) radially is arranged on described opening (14,15) inboard, and be arranged in the zone of the axial end portion of described rotor core, described annular channel is in the direction upper shed of described axial end portion, and be filled electric conducting material, the inner radial wall of described annular channel is removed.
14. rotor pack structure as claimed in claim 13 is characterized in that: described annular channel (20) has the depressed part (23) of a plurality of radially outwardly projectings in its circle wall.
15. such as claim 13 or 14 described rotor pack structures, it is characterized in that: the step (22) that described annular channel (20) is from inside to outside radially extended penetrates, and the described step (22) of adjacent sheet hardware (8) relative to each other has predetermined angular distance.
16. rotor pack structure as claimed in claim 15 is characterized in that: described step (22) is tapered radially outwardly.
17. such as claim 13 or 14 described rotor pack structures, it is characterized in that: have at least one vent passages (24,29,30) towards outside opening at the upper at least one sheet metal element in the axial inboard of described annular channel (20) (8).
18. rotor pack structure as claimed in claim 17 is characterized in that: described vent passages (29,30) terminates in the opening (31,32).
19. rotor pack structure as claimed in claim 17 is characterized in that: described vent passages (29,30) is connected to described annular channel (20) via the axial passage (28) from the inner radial region extension of described annular channel (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008038797A DE102008038797B3 (en) | 2008-08-13 | 2008-08-13 | Method for producing a rotor and rotor core for producing a rotor of an asynchronous machine |
| DE102008038797.5 | 2008-08-13 |
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| Publication Number | Publication Date |
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| CN101651387A CN101651387A (en) | 2010-02-17 |
| CN101651387B true CN101651387B (en) | 2013-03-13 |
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| CN200910167013.7A Active CN101651387B (en) | 2008-08-13 | 2009-08-12 | Method for producing rotor and rotor lamination structure for producing rotor of asynchronous motor |
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| Country | Link |
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| DE (1) | DE102008038797B3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2743028B1 (en) * | 2012-12-17 | 2017-11-08 | General Electric Technology GmbH | System and method for manufacturing rotors |
| DE102018104653A1 (en) * | 2018-03-01 | 2019-09-05 | Thyssenkrupp Ag | Rotor, asynchronous machine and use of a thrust washer |
| US11121597B2 (en) * | 2018-08-08 | 2021-09-14 | Schaeffler Technologies AG & Co. KG | Hybrid module including rotor having coolant flow channels |
| FR3105640B1 (en) * | 2019-12-20 | 2021-12-03 | Valeo Equip Electr Moteur | electrical conductor for a coiled part of a rotating electrical machine |
| CN111082555A (en) * | 2019-12-26 | 2020-04-28 | 上海电气集团上海电机厂有限公司 | High-speed two-pole meter cold punching sheet rotor of steam turbine generator |
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| CN1607985A (en) * | 2001-12-28 | 2005-04-20 | 巴西船用压缩机有限公司 | Process for the injection of an electric motor rotor |
| CN1627610A (en) * | 2003-12-12 | 2005-06-15 | 乐金电子(天津)电器有限公司 | Cage shaped rotor in motor, and manufacturing method |
| CN1784820A (en) * | 2003-05-06 | 2006-06-07 | 丹佛斯压缩机有限责任公司 | A rotor for an electrical motor |
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| CN1925280A (en) * | 2005-08-30 | 2007-03-07 | 乐金电子(天津)电器有限公司 | Induction motor rotor and its making method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59106866A (en) * | 1982-12-10 | 1984-06-20 | Toshiba Corp | Squirrel-cage induction motor for enclosed compressor |
| DK157391A (en) * | 1991-09-06 | 1993-03-07 | Danfoss Flensburg Gmbh | ROTOR FOR AN ELECTRIC MACHINE |
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2008
- 2008-08-13 DE DE102008038797A patent/DE102008038797B3/en active Active
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| CN1607985A (en) * | 2001-12-28 | 2005-04-20 | 巴西船用压缩机有限公司 | Process for the injection of an electric motor rotor |
| CN1784820A (en) * | 2003-05-06 | 2006-06-07 | 丹佛斯压缩机有限责任公司 | A rotor for an electrical motor |
| CN1627610A (en) * | 2003-12-12 | 2005-06-15 | 乐金电子(天津)电器有限公司 | Cage shaped rotor in motor, and manufacturing method |
| CN1808842A (en) * | 2004-12-20 | 2006-07-26 | 丹佛斯压缩机有限责任公司 | Rotor for an electrical motor, method for manufacturing thereof and interlock tools |
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| DE102008038797B3 (en) | 2010-05-12 |
| CN101651387A (en) | 2010-02-17 |
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