WO2004021548A1 - Laminated core for an electrical machine - Google Patents
Laminated core for an electrical machine Download PDFInfo
- Publication number
- WO2004021548A1 WO2004021548A1 PCT/DE2003/000842 DE0300842W WO2004021548A1 WO 2004021548 A1 WO2004021548 A1 WO 2004021548A1 DE 0300842 W DE0300842 W DE 0300842W WO 2004021548 A1 WO2004021548 A1 WO 2004021548A1
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- WIPO (PCT)
- Prior art keywords
- laminated core
- sheet metal
- electrical machine
- sheet
- laminates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/022—Magnetic cores with salient poles
Definitions
- the invention relates to a laminated core for an electrical machine according to the preamble of patent claim 1.
- the laminated core consists of laminated laminates stacked one above the other with an essentially constant thickness. Due to the constant thickness of the sheet metal laminates, the torque ripple and in particular is
- the dimensions of the power of the electrical machine in which the laminated core is arranged are also predetermined and cannot be influenced by the manufacture.
- a laminated core that has pole teeth.
- sheet metal laminates are provided in which the pole teeth are connected to one another via webs.
- Sheet metal laminates are also arranged in the laminated core between sheet metal laminates of this type, in which the webs between the pole teeth are interrupted. This creates a lower leakage flux of the magnetic field.
- the torque ripple and the power can be influenced by the choice of the number of sheet metal laminates with interrupted webs between the pole teeth.
- the laminated core according to the invention with the characterizing features of claim 1 has the advantage that the mechanical strength of the individual laminated laminates and thus the laminated core is higher. This is achieved in that the width of the webs of the sheet metal laminates is not minimized, but rather that the sheet metal laminates or at least one of the sheet metal laminates has a smaller thickness than the rest of the sheet metal laminate at several or at least one point. This makes it possible to influence the torque ripple of an electrical machine that has such a laminated core in a targeted manner.
- the location of reduced thickness preferably lies between the planes formed by the two end faces of the sheet metal laminate, as a result of which preferably no sections of the sheet metal laminate protrude. For strength, it is advantageous if the point of reduced thickness is produced by pressing, which results in a smooth transition of the material fibers.
- the sheet metal laminate is essentially ring-shaped. It is particularly advantageous here if a plurality of locations of smaller thickness, which are evenly distributed on the circumference, are provided, since this is easier to manufacture than locations which are distributed unevenly.
- the laminated core according to the invention is preferably used for a stator or a rotor.
- the sheet metal laminate has pole teeth arranged on the circumference.
- the easiest way to influence the torque ripple is to design the point of reduced thickness between the pole teeth.
- a preferred development of the invention is also when the pole teeth point outwards and that
- Laminated core is arranged in a short-circuit ring, since this represents the best structure for strength.
- the laminated core according to the invention is arranged in an electrical machine.
- the laminated sheets are punched out of a sheet metal strip with a substantially constant thickness and that at least one point of the at least one laminated sheet is produced with a smaller thickness.
- This allows a workstation in the Manufacturing process both produce the sheet metal laminate and influence the three-dimensional ripple of the subsequent sheet stack or the subsequent electrical machine.
- the at least one point of reduced thickness is pressed. This has the advantage that the material fibers are not, or at least hardly, interrupted. It is particularly advantageous if the
- Sheet laminates can be combined into a sheet package immediately following the above steps.
- At least one device for punching out the sheet metal laminate from the sheet metal strip and at least one device for producing the at least one point of reduced thickness are provided. Both devices can be provided on one tool.
- a device for combining the sheet laminates to form the sheet stack is also provided on the device mentioned.
- FIG. 1 shows an electrical machine in cross section
- FIG. 2 shows a perspective view of a laminated core according to FIG. 1
- FIG. 3 shows a detail with a laminated laminate of the laminated core from FIGS
- Figure 4 shows a device for producing the laminated core.
- the electrical machine 10 can be an electric motor (commutator motor, electronically commutated direct current motor, alternating current motor, etc.) or a generator or the like. If the electrical machine 10 is used as a motor, it can also be used in a drive device, for example for a window regulator in a motor vehicle.
- the electrical machine 10 comprises a rotor 12, which is arranged on a shaft 14.
- the electrical machine 10 comprises a stator 16, which is arranged around the rotor 12 and in turn is fastened in a yoke ring 18.
- the stator 16 is essentially ring-shaped and has pole teeth 20 which are arranged on the circumference and point outwards.
- Windings 22 are arranged in a known manner around the pole teeth 20, which run in the axial direction of the electrical machine 10.
- the windings 22 can be excitation windings.
- a voltage or a current can be tapped from the windings 22.
- the ring-shaped structure of the stator 16 results in the pole teeth 20 being connected to one another via webs 24 in the form of ring segments.
- the webs 24 have an arcuate shape on the inner circumference of the stator 16. Starting from the pole teeth 20, the webs 24 taper until they are in the middle between two pole teeth
- the laminated core 26 of the stator 16 is shown in FIG.
- the laminated core 26 consists of individual laminated laminates 28 stacked one above the other.
- the laminated laminates 28 are connected to one another in a known manner.
- the laminated core 26 need not be the laminated core of a stator 16. Alternatively, it can also be the laminated core 26 of a rotor of an electrical machine. Only the inside diameter would have to be dimensioned differently in relation to the length of the pole teeth 20.
- FIG. 2 A section of a sheet metal laminate 28 is shown in FIG. It is clear here that - as can already be seen in FIG. 2 - the sheet metal laminates 28 in the middle of the webs 24 are thinner than in the region of the pole teeth 20.
- the sheet metal laminates 28 with an essentially constant thickness D are distinguished by the fact that they have points 30 with a smaller thickness d.
- the laminated core 26, which is constructed essentially in the form of a ring these are preferably a plurality of locations 30 of reduced thickness d that are evenly distributed over the circumference. Since the locations 30 of reduced thickness d are formed between the pole teeth 20 in the present exemplary embodiment this has a very large influence on the torque ripple and possibly also the cogging torque of the electrical machine 10.
- the locations 30 are preferably produced by pressing. This results in a more homogeneous course of the material fibers.
- FIG. 4 shows a device 36 for producing the laminated core 26 according to the invention.
- the sheet metal strip 40 forming the starting material for the sheet metal laminates 28 is unwound from a roll 38.
- the sheet metal laminates 28 are punched out in a first device 42.
- the positions 30 are generated in a second device 44.
- the individual sheet laminates 28 are joined to form a sheet stack 26.
- the laminated cores 26 are then installed in the electrical machines 10.
- the first device 42 can also be connected downstream of the second device 44. It is also possible for the first device 42 and the second device 44 to be combined to form a common device.
- the location 30 on the second device 44 is preferably produced by pressing. Alternatively, it is also possible for the point 30 to be produced by machining. However, pressing is an easier process.
- the torque ripple of an electrical machine 10 can be influenced in a targeted manner by the laminated core 26 according to the invention or the laminated laminates 28. As can be seen in the figures, this can be accomplished by means of regularly arranged locations 30 which are provided on all sheet metal laminates 28. However, it is also possible to carry out this measure only on a single laminate 28 or a part of the laminates 28 of a laminated core 26. It is even possible to provide this at only one point 30 of a single sheet metal laminate 28.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Blechpaket für eine elektrische MaschineSheet package for an electrical machine
Stand der TechnikState of the art
Die Erfindung geht aus von einem Blechpaket für eine elektrische Maschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a laminated core for an electrical machine according to the preamble of patent claim 1.
Aus der US 5,918,359 ist ein Blechpaket bekannt, das als Stator oder Rotor einer elektrischen Maschine verwendet werden kann. Das Blechpaket besteht aus übereinander gestapelten Blechlaminaten mit im wesentlichen konstanter Dicke. Durch die konstante Dicke der Blechlaminate ist insbesondere die Drehmomentenwelligkeit und im gewissemFrom US 5,918,359 a laminated core is known which can be used as a stator or rotor of an electrical machine. The laminated core consists of laminated laminates stacked one above the other with an essentially constant thickness. Due to the constant thickness of the sheet metal laminates, the torque ripple and in particular is
Masse auch die Leistung der elektrischen Maschine, in der das Blechpaket angeordnet ist, fest vorgegeben und ist durch die Herstellung nicht beeinflussbar.The dimensions of the power of the electrical machine in which the laminated core is arranged are also predetermined and cannot be influenced by the manufacture.
Aus der DE 34 18 069 AI ist ein Blechpaket bekannt, dass Polzähne aufweist. Hierbei sind Blechlaminate vorgesehen, bei denen die Polzähne über Stege miteinander verbunden sind. In dem Blechpaket sind zwischen derartigen Blechlaminaten auch Blechlaminate angeordnet, bei denen die Stege zwischen den Polzähnen unterbrochen sind. Dadurch wird ein geringerer Streufluss des Magnetfelds erzeugt. Außerdem kann man durch die Wahl der Anzahl der Blechlaminate mit unterbrochenen Stegen zwischen den Polzähnen die Drehmomentenwelligkeit und die Leistung beeinflussen. ZurFrom DE 34 18 069 AI a laminated core is known that has pole teeth. Here, sheet metal laminates are provided in which the pole teeth are connected to one another via webs. Sheet metal laminates are also arranged in the laminated core between sheet metal laminates of this type, in which the webs between the pole teeth are interrupted. This creates a lower leakage flux of the magnetic field. In addition, the torque ripple and the power can be influenced by the choice of the number of sheet metal laminates with interrupted webs between the pole teeth. to
Herstellung der Blechlaminate mit durchgehenden oder unterbrochenen Stegen sind zwei unterschiedliche Werkzeuge notwendig. Ferner sind die Blechlaminate mit unterbrochenen Stegen mechanisch nicht so stark beanspruchbar wie Blechlaminate mit durchgehenden Stegen. Vorteile der ErfindungThe production of sheet metal laminates with continuous or interrupted webs requires two different tools. Furthermore, the sheet metal laminates with interrupted webs cannot be mechanically stressed as much as sheet metal laminates with continuous webs. Advantages of the invention
Das erfindungsgemäße Blechpaket mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil, dass die mechanische Festigkeit der einzelnen Blechlaminate und somit des Blechpakets höher ist. Dies wird dadurch erreicht, dass nicht die Breite der Stege der Blechlaminate minimiert wird, sondern dass die Blechlaminate oder zumindest eines der Blechlaminate an mehreren oder wenigstens einer Stelle eine geringere Dicke als das übrige Blechlaminat aufweist. Dadurch ist eine gezielte Beeinflussung der Drehmomentenwelligkeit einer elektrischen Maschine, die ein derartiges Blechpaket aufweist, möglich. Vorzugsweise liegt die Stelle geringerer Dicke zwischen den durch die beiden Stirnflächen des Blechlaminats gebildeten Ebenen, wodurch vorzugsweise keine Abschnitte des Blechlaminats überstehen. Für die Festigkeit ist es vorteilhaft, wenn die Stelle geringerer Dicke durch Pressen hergestellt wird, das sich dadurch ein fließender Übergang der Werkstofffasern ergibt.The laminated core according to the invention with the characterizing features of claim 1 has the advantage that the mechanical strength of the individual laminated laminates and thus the laminated core is higher. This is achieved in that the width of the webs of the sheet metal laminates is not minimized, but rather that the sheet metal laminates or at least one of the sheet metal laminates has a smaller thickness than the rest of the sheet metal laminate at several or at least one point. This makes it possible to influence the torque ripple of an electrical machine that has such a laminated core in a targeted manner. The location of reduced thickness preferably lies between the planes formed by the two end faces of the sheet metal laminate, as a result of which preferably no sections of the sheet metal laminate protrude. For strength, it is advantageous if the point of reduced thickness is produced by pressing, which results in a smooth transition of the material fibers.
In einer bevorzugten Ausführungsform ist das Blechlaminat im wesentlichen ringförmig aufgebaut. Hierbei ist es besonders vorteilhaft, wenn mehrere, am Umfang gleichmäßig verteilte Stellen geringerer Dicke vorgesehen sind, da dies einfacher herzustellen ist als ungleichmäßig verteilte Stellen.In a preferred embodiment, the sheet metal laminate is essentially ring-shaped. It is particularly advantageous here if a plurality of locations of smaller thickness, which are evenly distributed on the circumference, are provided, since this is easier to manufacture than locations which are distributed unevenly.
Vorzugsweise wird das erfindungsgemäße Blechpaket für einen Stator oder einen Rotor verwendet. Hierbei weist das Blechlaminat am Umfang angeordnete Polzähne auf. Am leichtesten lässt sich hierbei die Drehmomentenwelligkeit beeinflussen, wenn die Stelle geringerer Dicke zwischen den Polzähnen ausgebildet ist. In diesem Fall ist auch eine bevorzugte Weiterbildung der Erfindung, wenn die Polzähne nach außen weisen und dasThe laminated core according to the invention is preferably used for a stator or a rotor. Here, the sheet metal laminate has pole teeth arranged on the circumference. The easiest way to influence the torque ripple is to design the point of reduced thickness between the pole teeth. In this case, a preferred development of the invention is also when the pole teeth point outwards and that
Blechpaket in einem Kurzschlussring angeordnet ist, da dies den für die Festigkeit besten Aufbau darstellt.Laminated core is arranged in a short-circuit ring, since this represents the best structure for strength.
In einer bevorzugten Weiterbildung wird das erfindungsgemäße Blechpaket in einer elektrischen Maschine angeordnet.In a preferred development, the laminated core according to the invention is arranged in an electrical machine.
Bei einem Verfahren zum Herstellen des erfindungsgemäßen Blechpakets ist vorgesehen, dass die Blechlaminate aus einem Blechstreifen mit im wesentlichen konstanter Dicke ausgestanzt werden und dass wenigstens eine Stelle des zumindest einen Blechlaminats mit einer geringeren Dicke erzeugt wird. Dadurch lässt sich an einer Arbeitsstation im Fertigungsprozess sowohl das Blechlaminat herstellen als auch die Drelimomentenwelligkeit des späteren Blechpakets bzw. der späteren elektrischen Maschine beeinflussen. In einer bevorzugten Weiterbildung wird die wenigstens eine Stelle geringerer Dicke gepresst. Dies hat den Vorteil, dass die Werkstofffasern nicht oder zumindest kaum unterbrochen werden. Es ist besonders vorteilhaft, wenn dieIn a method for producing the laminated core according to the invention, it is provided that the laminated sheets are punched out of a sheet metal strip with a substantially constant thickness and that at least one point of the at least one laminated sheet is produced with a smaller thickness. This allows a workstation in the Manufacturing process both produce the sheet metal laminate and influence the three-dimensional ripple of the subsequent sheet stack or the subsequent electrical machine. In a preferred development, the at least one point of reduced thickness is pressed. This has the advantage that the material fibers are not, or at least hardly, interrupted. It is particularly advantageous if the
Blechlaminate gleich im Anschluss an die voranstehend genannten Schritte zu einem Blechpaket zusammengefasst werden.Sheet laminates can be combined into a sheet package immediately following the above steps.
Bei einer bevorzugten Einrichtung zum Ausführen des Verfahrens ist wenigstens eine Vorrichtung zum Ausstanzen des Blechlaminats aus dem Blechstreifen und wenigstens eine Vorrichtung zur Erzeugung der wenigstens eine Stelle geringerer Dicke vorgesehen. Beide Vorrichtungen können an einem Werkzeug vorgesehen werden. Vorzugsweise ist an der genannten Einrichtung noch eine Vorrichtung zum Zusammenfassen der Blechlaminate zu dem Blechpaket vorgesehen.In a preferred device for carrying out the method, at least one device for punching out the sheet metal laminate from the sheet metal strip and at least one device for producing the at least one point of reduced thickness are provided. Both devices can be provided on one tool. Preferably, a device for combining the sheet laminates to form the sheet stack is also provided on the device mentioned.
Weitere Vorteile und vorteilhafte Weiterbildungen des erfindungsgemäßen Blechpakets ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous developments of the laminated core according to the invention result from the subclaims and the description.
Zeichnungdrawing
Ein Ausführungsbeispiel ist in der Zeichnung dargestellt und in den nachfolgendenAn embodiment is shown in the drawing and in the following
Beschreibung näher erläutert. Es zeigen:Description explained in more detail. Show it:
Figur 1 eine elektrische Maschine in Querschnitt,FIG. 1 shows an electrical machine in cross section,
Figur 2 eine perspektivische Ansicht auf ein Blechpaket nach Figur 1, Figur 3 einen Ausschnitt mit einem Blechlaminat des Blechpakets aus Figur 2 und2 shows a perspective view of a laminated core according to FIG. 1, FIG. 3 shows a detail with a laminated laminate of the laminated core from FIGS
Figur 4 eine Einrichtung zum Herstellen des Blechpakets.Figure 4 shows a device for producing the laminated core.
Beschreibungdescription
In der Figur 1 ist vereinfacht eine elektrische Maschine 10 in Querschnitt dargestellt. Bei der elektrischen Maschine 10 kann es sich um einen Elektromotor (Kommutatormotor, elektronisch kommutierter Gleichstrommotor, Wechselstrommotor, etc.) oder einen Generator oder dergleichen handeln. Wird die elektrische Maschine 10 als Motor eingesetzt, so kann sie noch in einer Antriebsvorrichtung, beispielsweise für einen Fensterheber in einem Kraftfahrzeug, eingesetzt werden. Die elektrische Maschine 10 umfasst einen Rotor 12, der auf einer Welle 14 angeordnet ist. Weiterhin umfasst die elektrische Maschine 10 einen Stator 16, der um den Rotor 12 angeordnet ist und seinerseits in einem Rückschlussring 18 befestigt ist. Der Stator 16 ist im wesentlichen ringförmig aufgebaut und weist am Umfang angeordnete, nach außen weisende Polzähne 20 auf. Um die Polzähne 20, die in axialer Richtung der elektrischen Maschine 10 verlaufen, sind in bekannter Weise Wicklungen 22 angeordnet. Die Wicklungen 22 können im Falle eines beispielsweise elektronisch kommmutierten Motors Erregerwicklungen sein. Im Falle eines Generators kann an den Wicklungen 22 eine Spannung bzw. ein Strom abgegriffen werden.An electrical machine 10 is shown in cross section in a simplified manner in FIG. The electrical machine 10 can be an electric motor (commutator motor, electronically commutated direct current motor, alternating current motor, etc.) or a generator or the like. If the electrical machine 10 is used as a motor, it can also be used in a drive device, for example for a window regulator in a motor vehicle. The electrical machine 10 comprises a rotor 12, which is arranged on a shaft 14. Furthermore, the electrical machine 10 comprises a stator 16, which is arranged around the rotor 12 and in turn is fastened in a yoke ring 18. The stator 16 is essentially ring-shaped and has pole teeth 20 which are arranged on the circumference and point outwards. Windings 22 are arranged in a known manner around the pole teeth 20, which run in the axial direction of the electrical machine 10. In the case of an electronically commutated motor, for example, the windings 22 can be excitation windings. In the case of a generator, a voltage or a current can be tapped from the windings 22.
Durch den ringförmigen Aufbau des Stators 16 ergibt sich, dass die Polzähne 20 über ringsegmentförmige Stege 24 miteinander verbunden sind. Die Stege 24 haben am Innenumfang des Stators 16 einen kreisbogenförmigen Verlauf. Ausgehend von den Polzähnen 20 verjüngen sich die Stege 24, bis sie in der Mitte zwischen zwei PolzähnenThe ring-shaped structure of the stator 16 results in the pole teeth 20 being connected to one another via webs 24 in the form of ring segments. The webs 24 have an arcuate shape on the inner circumference of the stator 16. Starting from the pole teeth 20, the webs 24 taper until they are in the middle between two pole teeth
20 am dünnsten sind.20 are the thinnest.
In der Figur 2 ist das Blechpaket 26 des Stators 16 gezeigt. Das Blechpaket 26 besteht aus einzelnen übereinander gestapelten Blechlaminaten 28. Die Blechlaminate 28 sind in bekannter Weise miteinander verbunden.The laminated core 26 of the stator 16 is shown in FIG. The laminated core 26 consists of individual laminated laminates 28 stacked one above the other. The laminated laminates 28 are connected to one another in a known manner.
Wie insbesondere aus der Darstellung der Figur 2 hervorgeht, muss es sich bei dem Blechpaket 26 nicht um das Blechpaket eines Stators 16 handeln. Alternativ kann es auch das Blechpaket 26 eines Rotors einer elektrischen Maschine sein. Hierbei wäre lediglich der Innendurchmesser im Verhältnis zur Länge der Polzähne 20 anders zu dimensionieren.As can be seen in particular from the illustration in FIG. 2, the laminated core 26 need not be the laminated core of a stator 16. Alternatively, it can also be the laminated core 26 of a rotor of an electrical machine. Only the inside diameter would have to be dimensioned differently in relation to the length of the pole teeth 20.
In der Figur 3 ist ein Ausschnitt eines Blechlaminats 28 gezeigt. Hierbei wird deutlich, dass - wie schon in der Figur 2 zu erkennen ist - die Blechlaminate 28 in der Mitte der Stege 24 dünner ausgebildet sind als im Bereich der Polzähne 20. Die Blechlaminate 28 mit im wesentlichen konstanter Dicke D zeichnen sich dadurch aus, dass sie Stellen 30 mit einer geringeren Dicke d aufweisen. Im vorliegenden Fall des Blechpakets 26, das im wesentlichen ringförmig aufgebaut ist, sind dies vorzugsweise mehrere, am Umfang gleichmäßig verteilte Stellen 30 geringerer Dicke d. Da die Stellen 30 geringerer Dicke d im vorliegenden Ausführungsbeispiel zwischen den Polzähnen 20 ausgebildet sind, hat dies einen recht großen Einfluss auf die Drehmomentenwelligkeit und ggf. auch das Rastmoment der elektrischen Maschine 10. Wie ferner in der Figur 3 zu erkennen ist, liegt die Stelle 30 geringerer Dicke d zwischen zwei durch die beiden Stirnflächen 32, 34 des Blechlaminats 28 gebildeten Ebenen. Die Stellen 30 werden vorzugsweise durch Pressen hergestellt. Dadurch ergibt sich ein homogenerer Verlauf der Werkstofffasern.A section of a sheet metal laminate 28 is shown in FIG. It is clear here that - as can already be seen in FIG. 2 - the sheet metal laminates 28 in the middle of the webs 24 are thinner than in the region of the pole teeth 20. The sheet metal laminates 28 with an essentially constant thickness D are distinguished by the fact that they have points 30 with a smaller thickness d. In the present case of the laminated core 26, which is constructed essentially in the form of a ring, these are preferably a plurality of locations 30 of reduced thickness d that are evenly distributed over the circumference. Since the locations 30 of reduced thickness d are formed between the pole teeth 20 in the present exemplary embodiment this has a very large influence on the torque ripple and possibly also the cogging torque of the electrical machine 10. As can also be seen in FIG , The locations 30 are preferably produced by pressing. This results in a more homogeneous course of the material fibers.
Zwar können auch Stellen geringerer Dicke durch Fräsen hergestellt werden. Dies hat jedoch einen ungünstigeren Verlauf der Werkstofffasern zur Folge.Locations of smaller thickness can also be produced by milling. However, this results in a less favorable course of the material fibers.
In der Figur 4 ist eine Einrichtung 36 zum Herstellen des erfϊndungsgemäßen Blechpakets 26 gezeigt. Von einer Rolle 38 wird der den Ausgangswerkstoff für die Blechlaminate 28 bildende Blechstreifen 40 abgerollt. In einer ersten Einrichtung 42 werden die Blechlaminate 28 ausgestanzt. In einer zweiten Einrichtung 44 werden die Stellen 30 erzeugt. In einer dritten Einrichtung 44 werden die einzelnen Blechlaminate 28 zu einem Blechpaket 26 zusammengefügt. Danach werden die Blechpakete 26 in die elektrischen Maschinen 10 montiert.FIG. 4 shows a device 36 for producing the laminated core 26 according to the invention. The sheet metal strip 40 forming the starting material for the sheet metal laminates 28 is unwound from a roll 38. The sheet metal laminates 28 are punched out in a first device 42. The positions 30 are generated in a second device 44. In a third device 44, the individual sheet laminates 28 are joined to form a sheet stack 26. The laminated cores 26 are then installed in the electrical machines 10.
Die erste Einrichtung 42 kann auch der zweiten Einrichtung 44 nachgeschaltet sein. Auch ist es möglich, dass die erste Einrichtung 42 und die zweite Einrichtung 44 zu einer gemeinsamen Einrichtung zusammengefasst werden. Vorzugsweise wird die Stelle 30 an der zweiten Einrichtung 44 durch Verpressen hergestellt. Alternativ ist auch möglich, dass die Stelle 30 durch spannabhebende Bearbeitung hergestellt wird. Das Verpressen ist jedoch ein einfacherer Vorgang.The first device 42 can also be connected downstream of the second device 44. It is also possible for the first device 42 and the second device 44 to be combined to form a common device. The location 30 on the second device 44 is preferably produced by pressing. Alternatively, it is also possible for the point 30 to be produced by machining. However, pressing is an easier process.
Durch das erfindungsgemäße Blechpaket 26 bzw. die Blechlaminate 28 kann gezielt die Drehmomentenwelligkeit einer elektrischen Maschine 10 beeinflusst werden. Dies lässt sich, so wie in den Figuren gezeigt, durch regelmäßig angeordnete Stellen 30, die an allen Blechlaminaten 28 vorgesehen sind, bewerkstelligen. Es ist jedoch auch möglich, diese Maßnahme nur an einem einzelnen Blechlaminat 28 oder einem Teil der Blechlaminate 28 eines Blechpakets 26 durchführen. Es ist sogar möglich, an nur einer Stelle 30 eines einzelnen Blechlaminats 28 dies vorzusehen. The torque ripple of an electrical machine 10 can be influenced in a targeted manner by the laminated core 26 according to the invention or the laminated laminates 28. As can be seen in the figures, this can be accomplished by means of regularly arranged locations 30 which are provided on all sheet metal laminates 28. However, it is also possible to carry out this measure only on a single laminate 28 or a part of the laminates 28 of a laminated core 26. It is even possible to provide this at only one point 30 of a single sheet metal laminate 28.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002142404 DE10242404A1 (en) | 2002-09-12 | 2002-09-12 | Sheet package for an electrical machine |
| DE10242404.7 | 2002-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004021548A1 true WO2004021548A1 (en) | 2004-03-11 |
Family
ID=31895887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2003/000842 Ceased WO2004021548A1 (en) | 2002-09-12 | 2003-03-17 | Laminated core for an electrical machine |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10242404A1 (en) |
| WO (1) | WO2004021548A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7264494B2 (en) | 2004-12-06 | 2007-09-04 | Weatherford/Lamb, Inc. | Electrical connector and socket assemblies |
| GB2419039B (en) * | 2003-06-21 | 2007-11-21 | Weatherford Lamb | Electric submersible pumps |
| US7701106B2 (en) | 2003-06-21 | 2010-04-20 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| US7971650B2 (en) | 2003-06-21 | 2011-07-05 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| US8672641B2 (en) | 2003-06-21 | 2014-03-18 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| EP2026444A3 (en) * | 2007-08-17 | 2014-06-18 | Brose Fahrzeugteile GmbH & Co. KG, Würzburg | Synchronised machine and stand core for same |
| WO2018178576A1 (en) * | 2017-03-31 | 2018-10-04 | Moving Magnet Technologies | Split stator body for an electric machine |
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| DE102005017517B4 (en) * | 2005-04-15 | 2007-03-08 | Minebea Co., Ltd. | Stator assembly for an electric machine and method of manufacturing a stator assembly |
| DE102007032872A1 (en) * | 2007-07-12 | 2009-01-15 | Ipgate Ag | Stator for electric motor |
| DE202008017448U1 (en) * | 2008-08-15 | 2009-10-01 | Ina Drives & Mechatronics Gmbh & Co. Ohg | Active unit of an electrical machine |
| DE102013104392A1 (en) | 2013-04-30 | 2014-10-30 | Minebea Co., Ltd. | Stator arrangement for an electric machine, in particular a brushless DC motor and method for its production |
| US20140339947A1 (en) * | 2013-05-16 | 2014-11-20 | Lasko Holdings, Inc. | Multi-Piece Stator For An Electric Motor |
| EP3727717A1 (en) | 2017-12-20 | 2020-10-28 | Robert Bosch GmbH | Method for manufacturing a lamina for a laminated core for an electric machine |
| EP3706287A1 (en) * | 2019-03-07 | 2020-09-09 | Siemens Aktiengesellschaft | Sheet metal stack of a stator |
| DE102021112931A1 (en) | 2021-05-19 | 2022-11-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Stator of an electrical machine, method for manufacturing the same and electrical machine |
| FR3128595A1 (en) * | 2021-10-27 | 2023-04-28 | Moving Magnet Technologies | Engine with improved acoustics |
| DE102024208426B3 (en) * | 2024-09-05 | 2025-12-24 | Volkswagen Aktiengesellschaft | Rotor of an electric motor |
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| US3257572A (en) * | 1959-03-16 | 1966-06-21 | Licentia Gmbh | Stators for polyphase small electric motors |
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| EP1198053A1 (en) * | 2000-05-18 | 2002-04-17 | Mitsui High-tec, Inc. | Method of producing laminated iron cores |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2419039B (en) * | 2003-06-21 | 2007-11-21 | Weatherford Lamb | Electric submersible pumps |
| US7701106B2 (en) | 2003-06-21 | 2010-04-20 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| US7971650B2 (en) | 2003-06-21 | 2011-07-05 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| US8672641B2 (en) | 2003-06-21 | 2014-03-18 | Oilfield Equipment Development Center Limited | Electric submersible pumps |
| US7264494B2 (en) | 2004-12-06 | 2007-09-04 | Weatherford/Lamb, Inc. | Electrical connector and socket assemblies |
| US7632124B2 (en) | 2004-12-06 | 2009-12-15 | Premier Business Solutions, Ltd. | Electrical connector and socket assemblies for submersible assembly |
| US7726997B2 (en) | 2004-12-06 | 2010-06-01 | Oilfield Equpiment Development Center Limited | Electrical connector and socket assemblies |
| EP2026444A3 (en) * | 2007-08-17 | 2014-06-18 | Brose Fahrzeugteile GmbH & Co. KG, Würzburg | Synchronised machine and stand core for same |
| WO2018178576A1 (en) * | 2017-03-31 | 2018-10-04 | Moving Magnet Technologies | Split stator body for an electric machine |
| US11264846B2 (en) | 2017-03-31 | 2022-03-01 | Moving Magnet Technologies | Split stator body for an electric machine |
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|---|---|
| DE10242404A1 (en) | 2004-03-25 |
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