WO2018036952A1 - Rotor of an electrical machine and method for assembling the rotor - Google Patents

Abstract

The present invention relates to a laminated core, to a laminated core segment of a rotor, and to a rotor for an electrical machine. The rotor has at least one laminated core, which either is arranged on the rotor shaft or forms a rotor shaft. The laminated core has a plurality of laminated core sheets lined up one after the other in the axial direction, wherein each laminated core sheet has a through-opening for introducing a rotor shaft or a displacement means, wherein at least one displacement element is formed in a through-opening in at least one laminated core sheet, and wherein at least one receiving element, at least for receiving the displacement element or a displacement element of an axially adjacent laminated core sheet or a displacement element of an axially adjacent element, is formed in the through-opening in each laminated core sheet. The rotor also has two pressure plates, which each have a through-hole and between which the laminated core is arranged. The invention also relates to an electrical machine having the rotor and to a method for assembling the rotor.

Description

 Rotor of an electric machine and method of assembling the rotor

The present invention relates to a rotor for an electric machine and an electric machine, in particular a synchronous motor or an asynchronous motor with a corresponding rotor. Furthermore, the invention relates to a method for mounting a rotor.

STATE OF THE ART

 Rotors with plates arranged on a rotor shaft, in particular laminated cores, are known from the general state of the art. These rotors are used, for example, in asynchronous machines or permanently excited synchronous machines. to

Production of a reliable, in particular the torque transmitting connection between the laminated cores and the rotor shaft are in the known from the general state of the art rotors mostly additional elements, such as axial tie rods,

Positive locking or other aids, such as adhesives used. Also, the formation of a press fit, in particular a transverse press fit between the laminated core and the rotor shaft is well known. It is further known that by means of

Joining techniques, the laminated core is held in press fit on the shaft. Thus, it is further to be regarded as fundamentally known that the laminated cores thermally

shrunk, the shaft cooled and the laminated core is heated accordingly. However, this thermal joining is costly and associated with increased energy and time. Furthermore, the problem arises in terms of

Condensate, which due to the resulting temperature differences in

Can form joining area. Also to be regarded as fundamentally known are joining methods in which the laminated cores are pressed purely mechanically onto the rotor shaft. However, this pressurization requires a high stability of the laminated core itself, which, however, is not given in purely punch-punched laminated cores. Consequently, it is necessary to use laminated cores which are packaged using baked enamel and thus form a stable construct. In the case of such laminated cores, the mechanical joining is additionally supported by the adhesive properties of the baked enamel.

A pressing of the laminated core or the disk set on the rotor shaft is described for example in DE102009047485 AI. In this publication discloses an electric machine comprising a rotor and a shaft, wherein the rotor has at least one blade which is joined to the shaft and connected to the shaft. For this purpose, the lamella in a mounting area has a central

Receiving bore through which the shaft extends. The slat points in the

Mounting area Relief recesses on which allow deformation of the lamella in the mounting area. In a non-positive connection between the laminated core (s) and the rotor shaft, however, it is necessary to provide at least one additional cooling channel within the laminated core for cooling the rotor. This requires an additional costly and time-consuming processing of the laminated core.

To avoid this additional processing, it is fundamentally known to form a gap between the laminated core or the plurality of laminated cores and the rotor shaft.

In DE 102014106614 AI an electric machine is described, in which the laminated cores are clamped only clamped in the axial direction between two pressure plates on a rotor shaft. Contrary to the above-mentioned prior art with regard to the construction of rotors of electric machines, the torque is not passed through a radial interference fit from the laminated core in the rotor shaft, but via an axial interference fit from the laminated core on the thrust washers in the rotor shaft. A

Torque transmission between the laminated cores and between the laminated cores to the pressure plates takes place here but purely frictionally. Thus, it is conceivable that after prolonged operating time of the rotor of the interference fit between the pressure plates and the laminated cores subsides, so that the required torque transmission can not be guaranteed.

DISCLOSURE OF THE INVENTION

It is therefore the object of the present invention to remedy the above-described disadvantages in an electrical machine, in particular a rotor of an electric machine, at least partially. In particular, it is the object of the present invention to provide a laminated core, a laminated core segment, a rotor, an electric machine and a method for assembling a rotor, by means of which in a simple and cost-effective manner a rotationally arranged arrangement of the laminated core discs while process-reliable and high torque transmission from the produced laminated core to torque transmission receptacles, such as a shaft to enable. When using a rotor shaft to also allow the formation of a gap between the rotor shaft and the laminated core of the rotor.

The above object is achieved by a laminated core for a rotor with the

Characteristics according to claim 1 and a laminated core segment with the features of claim 6. Further, the above object is achieved by a rotor for an electric machine having the features of claim 8 or claim 9 and by an electric machine having the features of claim 15 and by a A method of assembling a rotor having the features of claim 16 or claim 17. Further features and details of the invention will be apparent from the subclaims, which

Description and the drawings. There are features and details that are in the

Connection with the laminated core according to the invention, the invention

Sheet metal segment and the rotor according to the invention are described, of course, also in connection with the electric machine according to the invention and in

Connection with the method according to the invention for mounting a rotor and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference is or can be made. In addition, the

Rotor according to the invention are mounted by means of the method according to the invention.

The laminated core according to the invention of a rotor of an electric machine has a plurality of successively lined up in the axial direction laminated core discs, each laminated core disc has a through hole for introducing a rotor shaft or a displacement means. At least one of the laminated core disks of the laminated core has at least one displacement element, which is formed in the passage opening of the corresponding laminated core disk. In addition, all laminated core discs at least each have a receiving element, which is also formed in the corresponding passage opening. The receiving element serves to receive the displacement element or a displacement element of an axially adjacent plate core disk or a displacement element of an axially adjacently arranged element. As axially adjacent laminated core disc is to be understood either immediately adjacent arranged laminated core disc, with which there is thus a touch contact or an indirectly adjacent laminated core disc, with which there is no contact. In the context of the invention, indirectly adjacent laminated core disks are to be understood to mean metal clamping disks between which at least one further laminated core disk, advantageously two or more laminated core disks, are arranged. The displacement element is advantageously designed in the form of a nose, a projection, a flag or in a comparable geometric shape. In the context of the invention, it is conceivable that the displacement element is a material projection, which extends at least in sections, starting from a surface of the passage opening inwardly into the passage opening. Advantageously, the displacement element extends radially inwardly into the passage opening. It is conceivable that the displacement element is in the geometric shape of a tongue or a flag. Alternatively, it is conceivable that the displacement element is a material formation formed from an undercut of the material in the region of the passage opening. Advantageously, the material shaping is a material shaping or a material cutout, which is designed in the form of a displaceable material section, in particular a material ear. Advantageously, the displacement element is plastically deformable, particularly advantageously bendable. Thus, it is possible that due to a bending or plastic deformation of the displacement element, an intervention or introduction of the displacement element in the receiving element, for example, an adjacent arranged laminated core disc is made possible. It is possible for the at least one receiving element to be a material recess which, starting from a surface of the passage opening, extends outwards into the material of the laminated core disc. Advantageously, the receiving element has a geometric shape which corresponds to the geometric shape of the displacement element. Particularly advantageously, the receiving element is the geometric negative of the displacement element. It is conceivable that the receiving element is formed, for example, in the geometric shape of a notch, a groove or a depression. Consequently, the receiving element is easy to manufacture or in a simple and cost-effective manner in the laminated core disc material form. It is also possible that the at least one receiving element is a material recess, which is formed adjacent to the passage opening. Advantageously, in this embodiment, the receiving element no contact with the passage opening. Advantageously, the receiving element is in this case in the form of a bore or a self-contained cutout, so that between the receiving element and the passage opening sufficiently material of the laminated core disc, in particular the displacement element of the laminated core disc, for example in the form of a material formation is arranged. It is also conceivable that by introducing a fastening means, the displacement elements are advantageously introduced into the receiving elements of the same laminated core disc. This advantageously produces a press connection, in particular a transverse compression bond between the respective displacement element of the respective Laminated core disc and the fastener. Due to the arrangement of the laminated core discs and the plastic deformation of the displacement elements, in particular in the involvement of the fastener, the individual laminated core discs are connected to each other such that a laminated core having a plurality of axially arranged and circumferentially rotationally connected laminated core discs produced.

It is also conceivable that each laminated core disc of a laminated core has at least one displacement element and at least one receiving element, which are formed in the region of the passage opening of the respective laminated core disc. Alternatively, it is conceivable that only the first and the last laminated core disc of the laminated core, or every second, every third or every fourth etc. laminated core disc of the laminated core have a displacement element.

It is further a laminated core segment having a laminated core of the type mentioned above and two each having a through hole having printing letters, between which the laminated core is arranged, claim. Advantageously, the pressure disks also each have at least one displacement element and / or one receiving element comparable to the displacement elements or receiving elements of the laminated core disks. Consequently, it is conceivable that the connection of the pressure disks to the laminated core, in particular to the end of the laminated core arranged laminated core discs comparable to the arrangement of the laminated core discs with each other - to form a laminated core - takes place.

In each case, a shielding disk is advantageously arranged between the respective pressure disks and the laminated core. It is conceivable that the shielding disks also have at least one displacement element and / or one receiving element comparable to the displacement elements or receiving elements of the laminated core disks. Consequently, it is conceivable that the connection of the shielding to the laminated core, in particular to the end of the laminated core arranged laminated core discs and or to the pressure plates comparable to the arrangement of the laminated core discs with each other - to form a laminated core - takes place.

It is also conceivable within the scope of the invention for at least the shielding disks and / or the pressure disks, furthermore the laminated disk disks, to comprise integrally formed displacement elements. These molded displacement elements are in a connection the individual components no longer bent or plastically deformed, but are already in a defined final assembly position. It is possible that by skillful insertion of the displacement elements in the receiving elements a connection, advantageously a non-positive and / or positive connection is formed. This is particularly advantageous in the use of a brittle material in the manufacture of components such as thrust washers or shielding discs. Since with a brittle material there is the danger that a deformation of the displacement elements leads to damage, in particular a break off of the displacement elements.

The rotor according to the invention for an electric machine has according to a first aspect of the invention

 at least one laminated core according to the above-mentioned type,

 - Two each having a through hole having printing letters, between which the laminated core is arranged such that the laminated core forms a rotor shaft, and

- A first stub shaft on which one of the two pressure discs is arranged rotationally fixed and a second stub shaft, on which another of the two pressure discs is arranged rotationally on.

Advantageously, the rotor has no rotor shaft for receiving the laminated core, in particular the laminated core segment of the type mentioned above. Rather, the rotor shaft is formed by means of the laminated core, in particular of the laminated core segment. Only shaft stumps are provided, which serve as a torque receiving means and record the torque generated by the laminated core and forward it to a consumer. The stub shafts extend viewed in the axial direction only in a portion of the laminated core segment into it. Advantageously, the stub shafts extend only until the beginning of the laminated core into the laminated core segment. This makes it possible that at least the pressure discs of the laminated core segment are rotationally connected to the stub shafts. In this case, for example, a first thrust washer is rotationally connected to a first stub shaft, while a second thrust washer is connected to a second stub shaft. The laminated core is advantageously cantilevered.

The rotor according to the invention for an electric machine according to a second aspect of the invention comprises at least

a rotor shaft, - At least one arranged on the rotor shaft laminated core, which has a plurality of axially aligned on the rotor shaft successively lined laminated core discs, wherein each laminated core disc has a through hole for introducing a rotor shaft or a displacement means, and wherein formed in a through hole at least one laminated core disc at least one displacement element is, being in the

Through hole of each laminated core disc at least one receiving element is formed at least for receiving the displacement element or a displacement element of an axially adjacent arranged laminated core disc or axially adjacent element arranged, and

 - Two each having a through hole pressure plates, between which the laminated core is arranged on.

The rotor shaft is advantageously designed in the form of a solid shaft. However, it is also conceivable that the rotor shaft is designed as a hollow shaft. Also, the rotor shaft may be formed as a built rotor shaft, wherein at least one flange is arranged on a hollow cylinder shell with integrally formed flange, in particular is pressed. Also, both flanges of the rotor shaft can be arranged on the hollow cylinder shell of the rotor shaft, so that the built rotor shaft is formed in three parts, instead of two parts. According to the invention, it is possible that the displacement element of a laminated core disc in the

Receiving element of the same laminated core disc engages, and it is also conceivable that the displacement element of a laminated core disc axially engages in a receiving element of the laminated core disc laminated core or an axially adjacent element, such as a thrust washer or a shielding plate engages. The pressure plates are advantageously arranged rotationally fixed on the rotor shaft, in particular pressed onto the rotor shaft, so that a frictional connection results between the rotor shaft and the pressure disks. Due to the intervention of the

Displacement element in the corresponding receiving element takes place an additional higher torque transmission from the laminated core of the rotor on the pressure plates to the rotor shaft, in particular because it comes in addition to the frictional connection between the pressure plates and the laminated core at least a positive connection between at least individual laminated core disks of the laminated core. The resulting positive connection thus allows a high torque transfer, which is advantageous speed independent. In addition, a grinding of the rotor shaft is avoided in advance as a processing step. It is also possible that at least the through holes of the

Laminated core disks or the through holes of the pressure plates are designed such that the rotor shaft extends therethrough and serves as a displacement means. Advantageously, the laminated core disks and the pressure disks have corresponding passage openings through which the rotor shaft extends and allows introduction of the displacement elements into the receiving elements in the laminated core. This means that when arranging the laminated core on the rotor shaft, the

formed positive displacement elements in corresponding receiving elements by means of the rotor shaft itself bring, so that an intentional positive connection between at least some of the sheet metal discs of the laminated core, advantageously additionally between the end plates of the laminated core and the pressure plates and / or shielding, which are also arranged on the rotor shaft arises. , Advantageously, the

Through holes of the pressure disks on a dimensioning, which of the

Diameter of the rotor shaft corresponds to such that the pressure plates are pressed with appropriate interference fit to the rotor shaft. It is also conceivable that at least one of the pressure discs is connected by means of a material connection, in particular a welded connection with the rotor shaft or a stub shaft.

In the context of the invention, it is alternatively possible for at least the laminated core disks to have a corresponding passage opening in addition to the respective passage opening or for the pressure disks to have a respective passage bore in addition to the respective through hole, wherein at least the passage openings or the

Through holes are configured such that the rotor shaft extends therethrough. It is therefore conceivable that the laminated core discs and / or the pressure plates each have an additional passage, wherein the displacement elements or the receiving elements advantageously in the through hole of the laminated core discs or in the through hole of the pressure plates is / are configured. As described above, it is conceivable in one embodiment that the respective displacement elements and / or the respective receiving elements are formed in the opening or bore of the laminated core disks or pressure disks, through which the rotor shaft also extends. However, it is also alternatively conceivable that the respective displacement element and / or the respective receiving elements of the laminated core discs and / or the pressure discs are formed in openings or bores which are formed in addition to the openings or bores through which the rotor shaft extends therethrough , This requires the introduction of the displacement elements of the laminated core in the receiving elements of the Laminated core and / or the pressure plates or shielding advantageous one

Displacement means, which is then introduced through the openings or holes at least temporarily. It is also conceivable that, for example, only the laminated core disks each have a through opening at which the

Displacement elements and the corresponding receiving elements are formed and through which the rotor shaft extends through, however, while the pressure plates have a through hole through which the rotor shaft extends therethrough, and in addition have a passage bore, in which the displacement elements and / or the receiving element are formed. Can not the rotor shaft itself as

Serve displacement means to at least partially introduce the displacement elements in the receiving elements or to connect with these, it also requires the use of an at least temporarily to be used additional displacement means. However, this displacement means, which can be designed as a pin, screw or the like, can also remain after introduction into the corresponding openings or bores in the laminated core or in the rotor.

Advantageously, it is possible, in particular in the embodiment of a permanently excited synchronous machine, that the respective displacement elements and / or the respective receiving elements are formed in areas of laminated core discs and / or thrust washers and / or shielding in which the magnetic field lines are at least marginal, in particular low or do not extend or train at all. This means that these are, in particular, regions that are irrelevant with respect to the magnetic field.

If the rotor shaft extends through the passage openings of the laminated core disks and / or the passage bores of the pressure disks, it is conceivable that a fastening means for axially compressing the laminated core disks or the laminated core disks and the pressure disks is arranged at least in the through openings or the through bores. Advantageously, the attachment means serves to press the pressure disks together in such a way that they are arranged between the pressure disks

Blechpaketscheiben be compressed axially. The fastening means is advantageously a positive locking means, such as a screw. The fastening means is arranged for example in the same or a different opening or bore, as the rotor shaft. It is therefore conceivable that the rotor shaft extends through the through holes of the laminated core disks as well as the fastener during which extends the rotor shaft through the through holes of the pressure plates and the

Fastening means by separately formed through holes of the pressure discs. It is also conceivable that the fastening means extends through passage openings of the laminated core disks and through passage bores in the pressure letter, while the rotor shaft extends through through holes in the laminated core disks and through holes in the pressure writing therethrough.

It is also conceivable that at least one of the pressure plates at least one

Displacement element or a receiving element has. Thus, it is possible that each thrust washer has a respective displacement element and a receiving element. It is also possible for at least one of the pressure disks to have a displacement element, while another one of the pressure disks has a receiving element for receiving a displacement element, for example a laminated core disk, in particular that laminated core disk which contacts the pressure disks. Consequently, advantageously, a positive connection can also be made possible between the pressure disks and the at least one laminated core of the rotor.

In the context of the invention it is further conceivable that between the laminated core and the pressure plates each have a shielding disc is arranged, wherein at least one of the shielding discs has at least one displacement element or a receiving element. The shielding plate advantageously serves to shield the magnetic field generated in the laminated core. The shielding disks and / or the pressure disks advantageously have a balance geometry, which serves to compensate for imbalances arising during rotation of the rotor shaft about its axis of rotation. It is conceivable that one of the shielding discs has a displacement element, while the other of the shielding discs

Receiving element has. Advantageously, at least one of the shielding disks has a displacement element and a receiving element, with two shielding disks particularly advantageously having a displacement element and a receiving element.

It is further claimed an electrical machine, which is in particular a synchronous motor or an asynchronous motor with a rotor according to the above-mentioned type. In the electric machine, all the advantages that have already been described for the rotor according to the first aspect of the invention. The inventive method for mounting a rotor according to the aforementioned type according to an embodiment of the invention comprises at least the following steps:

 Arranging a first of the pressure discs at a first distal end on the rotor shaft,

- Arranging the at least one laminated core on the rotor shaft such that one of the front side arranged laminated core discs of the laminated core contacted the first pressure plate at least partially directly or indirectly and that the displacement element of the at least one laminated core of the laminated core inserted into a receiving element at least for the positive connection of at least individual laminated core discs with each other will, and,

 - Arranging a second of the pressure discs on the rotor shaft such that the laminated core between the first pressure plate and the second pressure plate is positioned.

Advantageously, in this case, the laminated core is pushed onto the rotor shaft, wherein the

trained displacement elements are introduced into the receiving elements or connected to these. The rotor shaft itself serves advantageously as a displacement means, so that a further displacement means is not required. Advantageously, a pressure disk and / or a shielding disk can already be mounted on the rotor shaft before applying the laminated core. It is also conceivable that this pressure washer and / or

Abschirmscheibe is formed on the rotor shaft and is connected by a non-positive or positive connection cohesively with the rotor shaft. After the application of the at least one laminated core, advantageously a plurality of laminated cores, the assembly of a further thrust washer and / or shielding, which is also positively or positively connected to the rotor shaft.

The inventive method for mounting a rotor according to the aforementioned type according to a further embodiment of the invention comprises at least the following steps:

 Arranging a first of the pressure discs at a first distal end on the rotor shaft,

- Arranging the at least one laminated core on the rotor shaft such that one of the front side arranged laminated core discs of the laminated core contacting the first pressure plate at least partially directly or indirectly

 Arranging a second of the pressure disks on the rotor shaft such that the laminated core is positioned between the first pressure disk and the second pressure disk, and

 - Introducing a displacement means at least in the passage opening of the

Blechpaketscheiben the laminated core at least for the displacement of the respective Displacement element in the corresponding receiving element at least for the positive connection of the laminated core discs with each other.

The displacement means is for example a pin or a screw which remains in the opening. Advantageously, in addition to the displacement means, the rotor shaft also extends through the passage opening of the laminated core disks, so that consequently the displacement means as well as the rotor shaft extend together through the passage openings of the laminated core disks, advantageously between the

Displacer and the outer surface of the rotor shaft remains a gap. However, it is also conceivable that the displacement means through the through holes of the

Blechpaketscheiben the laminated core is pushed while the rotor shaft through

Passage openings of the laminated core disks is pushed through.

It is also conceivable that the displacement means is pushed through the through holes of the laminated core disks as well as through the through holes of the pressure plates. As a result, a positive connection is advantageously made possible not only between the at least individual laminated core disks of the laminated core, but also between the at least one laminated core of the rotor and the pressure disks of the rotor. Also, a passing of the displacement means through the passage holes of the pressure plates in an introduction of the rotor shaft, the through holes of the pressure plates is conceivable, even if the displacement means by the

Through holes or the passage openings of the laminated disks of the

Laminated core is pushed.

In one embodiment of the rotor shaft by means of shielding disks, it is conceivable that after arranging the first printing write on the rotor shaft, a

Shield is placed on the rotor shaft before the at least one laminated core is pushed onto the rotor shaft. Subsequently, a second shielding is pushed onto the rotor shaft such that between the two shielding

Laminated core is arranged. Finally, a second pressure disks is pushed onto the rotor shaft in such a way that the shielding disks and the at least one laminated core are arranged between the two pressure disks. As a result, a shielding disk is advantageously arranged between the respective pressure disks and the laminated core. This arrangement is possible for the method according to both embodiments of the invention. Advantageously, the shielding disks have corresponding through holes or else Through holes, through which the rotor shaft and / or the displacement means or a fastening means extends or extend therethrough. Advantageous are the

Shielding discs designed with respect to their openings or with respect to their holes comparable to the printing letters.

The described method yields all the advantages which have already been described for a rotor according to the first aspect of the invention or an electric machine according to the second aspect of the invention.

Embodiments of a rotor according to the invention an electric machine shaft and their assembly will be explained in more detail with reference to drawings. Each show schematically:

1 is a side sectional view of a detail of an embodiment of a rotor according to the invention after the assembly step of pushing individual components of the rotor onto the rotor shaft and before the assembly step of arranging these components,

Figure 2 in a lateral sectional view of the detail of Figure 1 after a

 Assembly step of arranging the individual components of the rotor on the rotor shaft and before the assembly step of the axial compression,

3 is a side sectional view of an enlargement of the detail A of FIG. 2 during the assembly step of the axial compression, FIG.

FIG. 4 is a side sectional view of an enlargement of the cutout A from FIG. 2 after the axial pressing step of the assembly;

FIG. 5 shows a plan view of an embodiment of a first laminated core disc and a second laminated core disc angularly twisted thereto;

FIG. 6 is a plan view of the laminated core disks shown in FIG. 5 as a positive connection; in a lateral sectional view of a section of another embodiment of a rotor according to the invention before the assembly step of the axial compression, in a lateral sectional view, an enlargement of the section A of Figure 2, in a sectional side view, an enlargement of the section A of Figure 2 during the assembly step of axial compression, in a lateral sectional view, a detail of another embodiment of a rotor according to the invention before the assembly step of the axial compression, in a sectional side view another embodiment of a rotor according to the invention after the assembly step of the axial compression by means of a fastener, in a plan view of the section CC of the figure 11, in a plan view of an embodiment of a shielding disk, in a perspective view of the embodiment of a shielding disk shown in Figure 13, in a plan view a further embodiment of a shielding disk, in a perspective view the embodiment of a shielding disk shown in Figure 15, in an overhead view an embodiment of a thrust washer, in a perspective view the embodiment of a thrust washer shown in Figure 17, 19 shows a plan view of a further embodiment of a thrust washer,

FIG. 20 is a perspective view of the embodiment of a thrust washer shown in FIG. 19;

21 is a side sectional view of a further embodiment of a rotor according to the invention, FIG.

FIG. 22 shows a side sectional view of a further embodiment of a rotor according to the invention after the assembly step of the axial compression by means of a fastening means,

FIG. 23 is a plan view of section D-D of FIG. 22;

Figure 24 is a side sectional view of a detail of another embodiment of a rotor according to the invention, and

FIG. 25 is a side sectional view of the detail F of FIG. 24

 Elements with the same function and mode of operation are each provided with the same reference numerals in FIGS.

FIG. 1 shows, in a lateral sectional representation, a detail of an embodiment of a rotor 1 according to the invention after the assembly step of pushing individual components of the rotor 1 onto the rotor shaft 2 and before the assembly step of arranging these components one against the other. The rotor 1 has a rotor shaft 2, which is designed for example as a solid shaft. A first print 10.1 and a second pressure disk 10.2 are arranged on the rotor shaft 2. Between the two pressure plates 10.1 and 10.2 at least one laminated core 3, in particular a plurality of laminated cores 3.1, 3.2, 3.3 and 3.4 are arranged. For simplicity's sake, below is one

Blechpaket 3 spoken, even if a plurality of laminated cores 3.1 to 3.4 are arranged axially adjacent to each other on the rotor shaft 2 or can be. The

Sheet metal stack 3 has a plurality of not shown here defined laminated core disks 4. Between the respective print 10.1 or 10.2 and the laminated core 3, a shielding disk 20, in particular a first shielding disk 20.1 and a second shielding disk 20.2 is respectively arranged. The pressure disks 10.1 and 10.2 shown in FIG. 1 are advantageous

Spring pressure plates or spring-loaded pressure plates, which press the shielding disks 20.1 and 20.2 in the direction of the laminated core 3 after the arrangement of the individual components on the rotor shaft 2. The required axial displacement of the pressure plates 10.1 and 10.2 in their end position is shown for example in FIG. The laminated core 3, in particular the individual laminated core disks 4 of the laminated core 3, each have a passage opening 6, through which the rotor shaft 2 extends through. On the surface of the through hole 6 are advantageously a plurality of

Displacement elements 5 is formed, wherein particularly advantageous each laminated core disk 4 of the laminated core 3 has a displacement element 5. The displacement elements 5 extend substantially inwardly from the surface of the passage opening 6 into the passage opening 6. Advantageously, as shown in the embodiment of Figure 1, it is conceivable that the displacement elements 5 each in the form of

Projections, in particular tongues or flags are formed. The shielding disks 20.1 and 20.2 shown in FIG. 1 advantageously each have one

Balancing geometry 40, which extends on the outer circumference of the shielding disks 20.1 and 20.2 in the radial direction outward as material shaping, in particular as a collar away. The shielding disks 20.1 and 20.2 each have a through-bore 21, within which at least one displacement element 22, starting from the outer surface of the through-bore 21, extends inwardly, advantageously radially inward away. The displacement element 22 of the shielding disks 20.1 or 20.2 is advantageously designed in the form of a tongue, in particular a flag. It is conceivable that the displacement element 22 of the respective shielding disk 20.1 or 20.2 is designed to be aligned with at least one of the end faces of the shielding disks 20.1 or 20.2 in the axial direction. The pressure disks 10.1 and 10.2, which are advantageously designed as spring pressure disks, in particular as a kind of plate spring, tension the shielding disks 20.1 and 20.2 and the laminated core 3 by means of a frictional connection. The pressure disks 10.1 and 10.2 also each have a through hole 11, within which at least one displacement element 12, starting from a surface of the

Through hole 11 inward, advantageously extends radially inward away.

It is conceivable that at least the first print 10.1 within their

Through hole 11 has a displacement element 12. Thus, it is possible that the second print 10.2 has no displacement element, so that the Through hole 11 only acts as a receiving element 13. For producing or producing the displacement elements 12 and 22 in the pressure disks 10.1 and 10.2 and the shielding disks 20.1 and 20.2, it is conceivable that the through holes 11 and 21 are made only partially piercing, so that a substantially in the radial direction in sections, a thin residual cross section remains, which acts as a displacement element 12 or 22 in the geometric shape of a tongue.

After pressing the pressure disks 10.1 and 10.2 to the shielding disks 20.1 and 20.2. and consequently to the laminated core 3, as shown in Figure 2, the assembly step of the axial compression, in particular the generation of a positive connection between at least the individual laminated core discs 4 of the laminated core 3 is carried out. Accordingly, in Figure 3 is a side sectional view of an enlargement of the section A shown in Figure 2 during the assembly step of the axial compression or generating the positive connection. It is also conceivable that the pressure disks 10.1 and 10.2 are merely applied to the shielding disks 20.1 and 20.2, with subsequent pressing or pressing of the pressure disks 10.1, 10.2 and consequently an axial compression or compression of the laminated core 3 taking place. After clamping of the laminated core 3 between the pressure plates 10.1 and 10.2 moves a displacement means 30 at least in the respective through holes 6 of the individual laminated core disks 4 of the laminated core 3 and particularly advantageous through the through holes 21 of the shielding 20.1 and 20.2 and through the through holes 11 of the printing 10.1 and 10.2. As a result, the displacement elements 5 of the laminated core discs 4 of the laminated core 3 and the at least one displacement element 12 of the first print 10.1 and the displacement elements 22 of the two shields 20.1 and 20.2 are bent. The bending of the respective displacement elements 5, 12 and 22 takes place in such a way that they engage in corresponding receiving elements of the respectively axially adjacent component. For example, the displacement elements 5 of the individual grip

Blechpaketescheiben 4 advantageous in not shown here receiving elements 7 a in the axial direction, in particular in the direction of insertion 31 adjacent arranged laminated core 4 a. The last viewed in the insertion direction 31 laminated core 4 advantageously has a displacement element 5, which engages in a receiving element 23 of a second shield 20.2. The displacement element 22 of the second shielding disk 20.2 advantageously engages in a receiving element 13 of a second pressure disk 10.2.

Consequently, it is advantageously possible that a displacement element 12 of a first

Print 10.1 engages a receiving element 23 of a first shielding disk 20.1, while the displacement element 22 of the first shielding disk 20.1 engages in a receiving element 7 a laminated core disk 4, in particular the first laminated core disk 4 of the laminated core 3 considered in the insertion direction 31. Advantageously, therefore, the laminated core discs 4 are connected to each other by means of positive locking, wherein particularly advantageous this positive engagement is continued into the shielding discs 20.1 and 20.2 and in the pressure discs 10.1 and 10.2 or extends. As a result, a secure torque transmission is ensured even for higher torque requirement, regardless of speed factors, which have a Überdeckungsmindernde effect, for example, in cross-press dressings.

It is advantageously conceivable that the respective displacement element 5, 12, 22 are designed geometrically wider than the receiving elements 7, 13, 23, which serve to receive the displacement elements 5, 12, 22, so that the positive connection between the individual components of the rotor 1 can be generated without play. After the individual

Displacement elements 5, 12, 23 are introduced into the corresponding receiving elements 7, 13, 23 and consequently bent accordingly, the displacement means 30 is again from the through hole 6 of the laminated core 3 and from the

Through holes 11 and 21 of the pressure plates 10.1, 10.2 and the shielding discs 20.1, 20.2 pulled out. The laminated core disks 4 are subsequently positively connected with each other, wherein advantageously also the laminated core 3 produced thereby

positively connected with the shielding discs 20.1 and 20.2 and on the shielding discs 20.1 and 20.2 also with the pressure discs 2010.1 and 10.2 positively connected. This is shown in particular in FIG. 4, which shows a lateral sectional illustration of an enlargement of the detail A from FIG. 2 after the assembly step of the axial compression, in particular of the generation of a positive connection.

FIG. 5 shows a plan view of an embodiment of a first laminated core disc 4.1 and a second laminated core disc 4.2 angularly offset relative to this first laminated core disc 4.1. Both laminated core disks 4.1 and 4.2 each have a plurality of displacement elements 5 and a plurality of receiving elements 7. The displacement elements 5 are advantageously designed in the form of a material tongue, while the receiving elements 7 are advantageously formed in the form of a recess, in particular a material recess. As can be seen in FIG. 5, it is conceivable that the displacement elements 5 have a circumferentially extending geometric width, which is advantageously greater than that extending in the circumferential direction geometric width of the receiving elements 7. Advantageously, the two

Blechpaketescheiben 4.1 and 4.2 formed geometrically identical and are rotated in their arrangement on the rotor shaft 2, as shown in Figure 1, at an angle to each other. Advantageously, this angular offset is about 36 °. The angular offset is dependent on the design and arrangement of the displacement elements 5 and receiving elements 7. This achieves advantageous that the displacement elements 5 and the

Receiving elements 7 from a laminated core disc to another laminated core disc, in particular from the first laminated core disc 4.1 shown here to the second

Blechpaketscheibe 4.2 are each arranged one above the other such that, for example, the displacement elements 5 of the first laminated core disc 4.1 after their deformation, in particular after their bending can positively engage in the receiving elements 7 of the second laminated core disc 4.2. This is shown by way of example in FIG. 6, in which, in a plan view, the laminated core disks 4.1 or 4.2 shown in FIG. 5 are shown as positive locking.

A further embodiment of a rotor 1 according to the invention is shown in FIGS. 7 to 9, wherein the embodiment of the rotor 1 according to the invention differs from the embodiment of a rotor 1 according to the invention shown in FIGS. 1 to 4 only in that one of the pressure disks 10, in particular the first print 10.1 as a stiff print, in particular executed as very stiff

Print 10.1 is configured, while the second print 10.2 is still designed as a spring pressure washer. Against the rigidly executed first print 10.1, the laminated core 3 is pressed by means of acting as a spring pressure write, in particular by means of the second pressure disk 10.2, which is the first print 10.1 opposite. According to FIG. 7, the second print 10.2 advantageously has a balance geometry 40, which is designed in the form of a collar extending outward in the axial direction. The rigid pressure write 10. 1 has a through hole 11 with at least one formed on the surface of the through hole 11

Displacement element 12 on. Through a passage bore 14 of the thrust washer 10.1, the rotor shaft 2 extends. As previously described in relation to the embodiment of a rotor 1 according to the invention according to the figures 1 to 4, is

positive connection of the laminated core disks 4 of the laminated core 3 with each other and the laminated core 3 with the shielding disks 20.1 and 20.2 and the

Pressure plates 10.1 and 10.2 used a displacement means 30, as shown in Figure 9. The displacing means 30, which is in the form of a pin, becomes first through the through hole 11 of the first print 10.1, then through the through hole 21 of the first shield 20.1 and further into the

Through openings 6 of the respective laminated core discs 4 of the laminated core 3 and from there further pushed through the through hole 21 of the second shielding disk 20.2 and ultimately advantageous through the through hole 11 of the second pressure disks 10.2. When introducing or inserting the displacement means 30, the respective displacement elements 5 and 12 or 22 in the corresponding

Receiving elements 7 or 13 or 23 displaced into it, in particular bent so that a positive connection between the individual components, in particular the laminated core discs 4 of the laminated core 3, the shielding 20.1 and 20.2 and the pressure plates 10.1 and 10.2 is mutually possible.

In the figure 10 is a section of another in a sectional side view

Embodiment of a rotor 1 according to the invention before the assembly step of the axial compression shown. The illustrated in the figure 10 embodiment of a

The rotor 1 according to the invention differs from the embodiments of a rotor 1 according to the invention shown for example in FIG. 1 and in FIG. 7 only in that the two pressure disks 10. 1 and 10. 2 each have a balance geometry 40. The balancing geometries 40 advantageously extend in each case in the axial direction in the form of a collar away from the end faces of the respective thrust washer 10.1 or 10.2. Accordingly, it is advantageously conceivable that the shielding disks, in particular the first shielding disk 20.1 and the second shielding disk 20.2, have no balancing geometries.

FIG. 11 shows, in a lateral sectional illustration, a further embodiment of a rotor 1 according to the invention after the assembly steps of the axial compression by means of a fastening means 50. The attachment means 50 is for example a

Positive locking means, in particular a screw which extends through corresponding openings or holes of the laminated core 3, in particular the laminated core discs 4, and at least the pressure plates 10.1 and 10.2. As shown in FIG. 11, the embodiment of the rotor 1 according to the invention has a rotor shaft 2 and a rotor shaft 2

Sheet metal stack 3, in particular a plurality of axially adjacent to the rotor shaft 2 adjacent to each other laminated cores 3.1 to 3.6, wherein for simplicity, the plurality of laminated cores 3.1 to 3.6 are summarized as a laminated core 3. The laminated core 3 has a plurality of laminated core disks 4 and is between two pressure disks 10.1 and 10.2 pressed axially. The laminated core 3 has a passage opening 6 and a passage opening 8. The rotor shaft 2 extends through the passage opening 8, while the fastening means 50 extends through the passage opening 6, within which advantageously at least one displacement element 5, as shown in particular in FIG. 12, is formed. The first print 10.1 and the second print 10.2 each have a through hole 11 and a passage bore 14. Through the passage bore 14, the rotor shaft 2 extends while passing through the

Through hole 11, the fastener 50 extends therethrough. Advantageously, in the through hole 11, not shown displacement elements 12 are formed. It is also conceivable that within the through-bore 11 of the pressure disks 10.1 and 10.2 no displacement elements are formed. Advantageously, it is conceivable that at least one receiving element 13 is formed in at least one of the pressure disks 10. 1 or 10. 2.

As shown in particular in FIG. 12, which shows a plan view of the section C - C of FIG. 11, the receiving elements 7 of the respective laminated core disks 4 of FIG

Laminated core 3, for example, in the form of a material recess, in particular a bore formed. The displacement elements 5 are advantageously formed as material shaping, which extends between the receiving elements 7 and the respective passage opening 6. When inserting the fastening means 50, whereby a plurality of fastening means 50 can be used, as shown for example in FIG. 12, into the respective through-openings 6 of the laminated core disks 4 of FIG

Blechpaketes 3, the displacement elements 5 are urged or moved into the receiving elements 7 of the same laminated core 4 in. The receiving elements 7 are advantageously designed in the form of a relief geometry, so that upon insertion of the

Fastening means 50, the displacement element 5 and in particular the remaining between the passage opening 6 and the receiving element 7 material of

Blechpaketscheibe 4 laterally into the receiving element 7 or which can escape the relief geometry, so that a backlash is guaranteed. The advantage here is considered a tolerance compensation which allows a greater punching tolerance. Advantageously, the respective fastening means 50 simultaneously serve as spring elements, so that the pressure disks 10.1 and 10.2 can be made solid and consequently the use of additional shielding disks can be dispensed with, for example when selecting aluminum material. FIGS. 13 and 14 show an embodiment of a shielding disk 20 with a balancing geometry 40, which is in the form of a collar on the outside

Peripheral surface of the shielding disk 20 advantageously extends in the radial direction outwardly from at least one of the end faces of the shielding disk 20 away. The shielding disk 20 has a through hole 21, on the surface of which a receiving element 23 is formed. As shown, for example, in FIGS. 13 and 14, at least in every second of the formed receiving elements 23 engages a displacement element 12, for example a printed or displacing element 5, for example a laminated core 4.

FIGS. 15 and 16 show a further embodiment of a shielding disk 20 which, unlike the embodiment of a shielding disk 20 shown in FIGS. 13 and 14, has no balance geometry 40.

FIGS. 17 and 18 show an embodiment of a thrust washer 10 which has a balancing geometry 40, which is in the form of a collar on the outside

Extending the circumferential surface of the pressure plate 10 advantageously in the radial direction outwardly from at least one of the end faces of the pressure plates 10 away. The print 10 has a passage bore 14, for example for receiving a rotor shaft not shown here and a plurality of through holes 11. The through holes 11 are advantageously used as receiving elements 13 for receiving a displacement element, for example, a laminated core disc not shown here or a not shown

Shielding disc. The thrust washers 10 shown in FIGS. 17 and 18 is advantageously a spring pressure sprocket.

FIGS. 19 and 20 show a further embodiment of a print 10, which differs from the embodiment of a pressure disk 10 shown in FIGS. 17 and 18 in that it has no balance geometry 40. In addition, the reference numeral 5, a displacement element is shown, which, for example, belongs to a laminated core disc not shown here and in the corresponding

Receiving element 13 of the print 10 extends into it. The print 10 shown in FIGS. 19 and 20 is advantageously an adjacent (stiff) print 10.

FIG. 21 shows a further embodiment of a rotor 1 according to the invention, which differs from the embodiments of a type shown in FIG Rotor 1 according to the invention differs, for example, in that no separate rotor shaft is present. Rather, the rotor shaft is formed by means of the laminated core 3, advantageously the laminated core segment 9 and particularly advantageous additionally by means of the rotatably connected to the pressure plates 10.1, 10.2 stub shafts 60.1 and 60.2. It is also conceivable that only a stub shaft 60.1 is present. At least the rotor 1 shown in FIG. 21 is mounted via at least one bearing element 70, wherein it is also conceivable that more than one bearing element 70, in particular two bearing elements (not shown here) are arranged on the rotor 1, in a defined manner Position in stock. Advantageously, the one bearing element 70 is arranged on one of the stub shafts, in particular on the first stub shaft 60.1. It is conceivable that at least one of the stub shafts 60.1 or 60.2 has a shoulder 61 which, for example, as

Stop means for the bearing element 70 is used. The bearing element 70 is advantageously a thrust bearing element or a radial bearing element. It is also conceivable that at least one of the stub shafts 60.1, 60.2 a toothing 61, in particular a

Having external teeth. This toothing is advantageously used to the shaft stub 60.1 or 60.2, in particular the rotor 1 with another component (not shown here), in particular a component to be driven to transmit torque.

Advantageously, the rotor 1 shown in FIG. 21 has a laminated core 3 comprising a plurality of laminated core disks 4 arranged in the axial direction, wherein each of the laminated core disks 4 advantageously has at least one displacement element 5, particularly advantageously additionally at least one receiving element 7. Advantageously, the at least one displacement element 5 and the at least one receiving element 7 are formed in the passage opening 6 of the respective laminated core disc 4. Based on the above-explained assembly of the laminated core disks 4 with each other, according to which the displacement element 5 of a laminated core 4 is inserted into the receiving element 7 of a directly or indirectly adjacent laminated core, creates a rotationally fixed arrangement of the individual laminated core 4 with each other, to produce a laminated core. 3 The same applies to the arrangement of the pressure disks 10.1, 10.2 to the laminated core 3 produced. For this purpose, the pressure disks 10.1, 10.2 each have at least one displacement element 12 and / or a receiving element 13 which is or are formed in the through-bore 11. Alternatively or in addition to the formed in the through hole 6 displacement elements 5 and

Receiving elements 7, it is conceivable that the laminated core disks 4, a passage opening 8, advantageously also the pressure plates 10.1, 10.2 a passage bore 14th exhibit. Thus, it is possible for a fastening means 50 to be arranged in the laminated core 3, advantageously in the laminated core segment 9, through these through-openings 8 and advantageously also through the through-holes 14. The

Fastener 50 serves in this case the (additional) compression of the laminated core 3 or of the laminated core segment 9 in the axial direction, that is, viewed in the longitudinal direction of the rotor 1. The fastening means 50 is advantageously a positive fastening means, particularly advantageously a screw member. The screw member has a

External teeth 50.1, which, for example, in a not shown here

Internal teeth of a thrust washer 10.1 engages. Advantageously, this internal toothing is formed in the through hole 11 of the thrust washer 10.1. It is also conceivable. That in the passage openings 8 of the individual laminated core discs 4 and / or in the passage holes 14 of the individual pressure plates 10.1, 10.2 displacement elements 6 and 12 and / or receiving elements 7 and 13 are formed. Thus, it is possible that when introducing the fastening means 50, these displacement elements 6 and 12 are introduced into corresponding receiving elements 7 and 13 respectively.

The rotor 1 shown in FIG. 21 advantageously has a self-supporting laminated core 3, which is only connected via thrust washers 10.1, 10.2 with stub shafts 60.1, 60.2, in particular connected to transmit torque.

The embodiment of a rotor 1 according to the invention shown in FIGS. 22 and 23 differs from the embodiment shown in FIGS. 11 and 12

in particular in that the rotor 1 does not have a separate rotor shaft, in particular no additional rotor shaft component. Rather, the laminated core 3, in particular the laminated core segment 9 also serves to form a rotor shaft. For this purpose, the respective thrust washers 10.1, 10.2 are advantageously designed such that they have stub shafts. Advantageously, the stub shafts are integrally formed on the pressure disks 10.1, 10.2 and consequently a component of the respective pressure disks 10.1, 10.2. Consequently, the pressure disks 10.1, 10.2 can be directly or in particular directly connected to a torque-receiving component, such as a shaft to be driven (not shown here). It is also conceivable that the pressure disks 10.1, 10.2, in particular their stub shafts for the arrangement of bearings, such as thrust bearings or radial bearings are used. Advantageously eliminated in the embodiment shown in Figures 22 and 23, the provision of further components, such as a separate rotor shaft, whereby the construction of the Rotor 1 increasingly simplified and its manufacturing and assembly costs are reduced.

FIG. 24 shows a detail of a further embodiment of a rotor 1 according to the invention, wherein the detail F shown in FIG. 24 is shown in enlargement in FIG. As can be seen in FIGS. 24 and 25, the rotor 1 has four laminated cores 3.1 to 3.4, which are arranged in the axial direction along the longitudinal axis of the rotor shaft 2 adjacent to one another on the rotor shaft 2. The laminated cores 3.1 to 3.4 clamping two pressure plates 10.1 and 10.2 are arranged on the rotor shaft 2, advantageously pressed onto this. These thrust washers 10.1 and 10.2 may be formed, for example, as a resilient pressure discs. The laminated cores 3.1 to 3.4 have a plurality of consecutively lined laminated core discs, which are not shown individually here due to the preservation of clarity. At least one of these laminated core disks per laminated core 3.1 to 3.4 has a displacement element 5. Advantageously, every second, third, fourth, etc. laminated core disk of a laminated core 3.1 to 3.4 has a displacement element 5. It is likewise conceivable for each laminated core disk of each laminated core 3.1 to 3.4 to have a displacement element 5 which is introduced into a corresponding receiving element (as shown, for example, in FIGS. 13 to 14) or positively connected thereto. Advantageously, as shown in Figures 24 and 25, the rotor shaft 2 itself serves as a displacement means and is introduced into the through hole 6 of the laminated cores 3.1 to 3.4, or the laminated cores 3.1 to 3.4 are pushed onto the rotor shaft 2 such that this rotor shaft. 2 extends through the through holes 6 of the laminated cores 3.1 to 3.4. When applying the laminated cores 3.1 to 3.4 on the rotor shaft 2, this rotor shaft 2 ensures that the displacement elements 5 of the laminated core disks of the laminated cores 3.1 to 3.4, advantageously elastic and plastic, are brought into operative connection with the receiving elements. For this purpose, the displacement elements 5 contact the rotor shaft 2, in particular its outer peripheral surface at least in sections. Due to an elastic resilience of the displacement elements 5, contact with the rotor shaft 2 is advantageously permanently and reliably ensured, in particular over larger shape tolerance ranges of the rotor shaft 2. Advantageously, this also allows an electromagnetic flow through the rotor shaft 2. It is also conceivable that in time before the application of the laminated cores 3.1 to 3.4, a first pressure disks 10.1 is applied to the rotor shaft 2 and fixed with this torsionally rigid and non-displaceable. In order to axially clamp the laminated cores 3.1 to 3.4, a second thrust washer is also applied after application 10.2 arranged on the rotor shaft 2. Consequently, the rotor shaft 2 also extends through the through holes 11 of the respective thrust washer 10.1, 10.2.

LIST OF REFERENCE NUMBERS

1 rotor

 2 rotor shaft

 3 laminated core

 3.1 first laminated core

3.2 second laminated core

3.3 third laminated core

3.4 fourth laminated core

4 laminated core disc

4.1 (first) laminated core disc

4.2 (second) laminated core disc

5 displacement element

6 passage opening

7 receiving element

8 passage opening

 9 laminated core segment

10 pressure disc

 10.1 first pressure discs

10.2 second print

11 through hole

12 displacement element

13 receiving element

14 passage bore

20 shielding screen

 20.1 first shielding disk

20.2 second shielding

21 through hole

22 displacement element

23 receiving element

24 passage bore

30 displacers 31 insertion direction

40 balance geometry

50 fasteners

50.1 external toothing

60.1 (first) stub shaft

60.2 (second) stub shaft

61 paragraph

 62 toothing

70 bearing element

A section

 B section

 C-C cut

 D-D cut

Claims

claims 1. laminated core (3) of a rotor of an electric machine, wherein the laminated core (3) has a plurality of successively lined up in the axial direction laminated core discs (4, 4.1, 4.2), wherein each laminated core discs (4, 4.1, 4.2) has a through hole (6 ) for introducing a rotor shaft (2) or a displacement means (30), and wherein in a passage opening (6) at least one laminated core disc (4, 4.1, 4.2) at least one displacement element (5) is formed, wherein in the passage opening (6) each laminated core disc (4) t at least one receiving element (7) at least for receiving the displacement element (5) or a displacement element (5) of an axially adjacent laminated core disc (4) or a displacement element (12, 22) of an axially adjacent element (10, 20) is formed. 2. laminated core (3) according to claim 1,  characterized in that  the at least one displacement element (5) is a material projection which extends at least in sections starting from a surface of the passage opening (6) inwardly into the passage opening (6). 3. laminated core (3) according to claim 1,  characterized in that  the at least one displacement element (5) is a material formation formed from an undercut of the material in the region of the passage opening (6). 4. laminated core (3) according to one of the preceding claims,  characterized in that  the at least one receiving element (7) is a material recess which, starting from a surface of the passage opening (6), extends outwards into the material of the laminated core disc (4). 5. laminated core (3) according to one of the preceding claims 1 to 3,  characterized in that the at least one receiving element (7) is a material recess, which adjacent to the passage opening (6) is formed. 6. laminated core segment (9) comprising a laminated core (3) according to claim 1 to 5 and two each having a through hole (11) having printed letter (10, 10.1, 10.2), between which the laminated core (3) is arranged. 7. laminated core segment (9) according to claim 6,  characterized in that  between the respective pressure discs (10, 10.1, 10.2) and the laminated core (3) each have a shielding disc (20.1, 20.2) is arranged. 8. rotor (1) for an electrical machine, comprising  at least one laminated core (3) according to claim 1,  - Two each having a through hole (11) having printing letters (10, 10.1, 10.2), between which the laminated core (3) is arranged such that the laminated core (3) forms a rotor shaft, and  - A first stub shaft, on which one of the two pressure discs (10, 10.1, 10.2) is arranged rotationally fixed and a second stub shaft on which another of the two pressure discs (10, 10.1, 10.2) is arranged rotationally. 9. rotor (1) for an electrical machine, comprising  a rotor shaft (2),  - At least one on the rotor shaft (2) arranged laminated core (3) according to claim 1, as well as  - Two in each case a through hole (11) having printing letters (10, 10.1, 10.2), between which the laminated core (3) is arranged. 10. rotor (1) according to claim 9,  characterized in that  at least the passage openings (6) of the laminated core disks (4) or the through bores (11) of the pressure disks (10, 10.1, 10.2) are designed such that the rotor shaft (2) extends therethrough. 11. rotor (1) according to claim 9, characterized in that at least the laminated core discs (4) in addition to the respective passage opening (6) have a corresponding passage opening (8), or the pressure discs (10, 10.1, 10.2) in addition to the respective through hole (11) have a respective passage bore (14), wherein at least the passage openings (8) or the passage bores (14) are configured such that the rotor shaft (2) extends therethrough. 12. Rotor (1) according to one of the preceding claims 8, 9 or 11,  characterized in that  at least in the through holes (6) or the through holes (11) a fastening means (50) for the axial compression of the laminated core discs (4) or the laminated core discs (4) and the pressure discs (10, 10.1, 10.2) is arranged. 13. Rotor (1) according to one of the preceding claims 8 to 12,  characterized in that  at least one of the pressure discs (10, 10.1, 10.2) has at least one displacement element (12) or a receiving element (13). 14. Rotor (1) according to one of the preceding claims 8 to 13,  characterized in that  between the laminated core (3) and the pressure plates (10, 10.1, 10.2) in each case a shielding disc (20, 20.1, 20.2) is arranged, wherein at least one of the shielding discs (20, 20.1, 20.2) at least one displacement element (22) or a receiving element (23). 15. Electrical machine, in particular synchronous motor or asynchronous motor with a rotor (1) according to one of the preceding claims 8 to 14. 16. A method for assembling a rotor (1) according to one of the preceding claims 9 to 14, wherein the method comprises at least the following steps:  Arranging a first of the pressure discs (10.1) at a first distal end on the rotor shaft (2), Arranging the at least one laminated core (3) on the rotor shaft (2) in such a way that one of the end face laminated core disks (4) of the laminated core (3) directly or indirectly contacts the first printed letter (10.1) at least in sections, and that the displacement element (5) of the at least one laminated core disc (4, 4.1, 4.2) of the laminated core (3) is inserted into a receiving element (7) at least for the positive connection of at least individual laminated core discs (4, 4.1, 4.2) with each other, and  - Arranging a second of the thrust washers (10, 10.1, 10.2) on the rotor shaft (2) such that the laminated core (3) between the first print spool (10.1) and the second print spine (10.2) is positioned. 17. A method for assembling a rotor (1) according to one of the preceding claims 9 to 14, wherein the method comprises at least the following steps:  Arranging a first of the pressure discs (10.1) at a first distal end on the rotor shaft (2),  - Arranging the at least one laminated core (3) on the rotor shaft (2) such that the rotor shaft (2) through the passage openings (8) of the laminated core disks and through the passage bores (14) of the pressure plates (10, 10.1, 10.2) extends therethrough , and that one of the end face arranged laminated core disks (4) of the laminated core (3), the first printed writing (10.1) at least partially directly or indirectly contacted, and  - Arranging a second of the thrust washers (10, 10.1, 10.2) on the rotor shaft (2) such that the laminated core (3) between the first print spool (10.1) and the second print spine (10.2) is positioned.  - Introducing a displacement means (30) in the passage opening (6) of the laminated core discs (4) of the laminated core (3) at least for displacement of the respective displacement element (5) in the corresponding receiving element (7) at least for the positive connection of the laminated core discs (4, 4.1, 4.2) with each other. 18. The method according to claim 16 or 17,  characterized in that  between the respective pressure discs (10, 10.1, 10.2) and the laminated core (3) each have a shielding disc (20, 20.1, 20.2) is arranged.