Fastening device for a textile machine

EP4747510A1Pending Publication Date: 2026-05-27SAURER SPINNING SOLUTIONS GMBH & CO KG

Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
SAURER SPINNING SOLUTIONS GMBH & CO KG
Filing Date
2024-07-08
Publication Date
2026-05-27

Smart Images

  • Figure EP2024069176_23012025_PF_FP_ABST
    Figure EP2024069176_23012025_PF_FP_ABST
Patent Text Reader

Abstract

The invention relates to a fastening device, in particular a mount, which is designed and configured to receive bearings of a textile machine, in particular a rotor spinning machine, comprising at least one inner ring region and at least one outer ring region. In order to improve the safety of the operation of a textile machine, to extend the service life of a textile machine and thus save resources, and to improve the operation of a textile machine, the inner ring region and the outer ring region are formed as a single piece.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] Description Fastening device for a textile machine

[0002] The invention relates to a fastening device. The invention further relates to a textile machine, in particular a rotor spinning machine. The invention relates to a digital twin. The invention relates to a method for generating a digital twin. The invention relates to a computer program product. The invention relates to a manufacturing method. The invention relates to a computing device and / or a control device.

[0003] Fastening devices, in particular bearings, for supporting bearings of a textile machine, in particular a rotor spinning machine, are known in the prior art, for example from DE 102020 104627 A1. This document discloses a shaft bearing for supporting a spinning rotor of a rotor spinning machine with a double-row rolling bearing, wherein the outer rings are elastically displaceably mounted in a shaft bearing housing.

[0004] Such fastening devices or bearings can also be referred to as elastic fastenings. This is, in particular, a functional element or device for a rapidly rotating component of a textile machine, in particular a rotor spinning machine, wherein the functional element or device can assume the positioning of the bearing of the rapidly rotating component within the textile machine, in particular the rotor spinning machine, and can dampen the vibrations occurring due to rotation. "Fast rotating" refers to a rotating component with a rotational speed of more than 100,000 revolutions per minute, as is particularly the case with spinning rotors.In order to perform these functions, the elastic fastening according to the prior art is composed in particular of at least one inner ring and at least one outer ring, in particular at least two outer rings, at least one damping element and at least one anti-start element. The damping element or elements consist in particular of a vibration-damping material, such as rubber, and are located in particular between the at least one outer ring and the at least one inner ring. A fixed connection, in particular a glued and / or vulcanized connection, can exist. In use, the connections are exposed in particular to temperatures and vibrations, which can lead to the connection between the rings (inner and outer, in particular metal rings) and rubber becoming loose.In the event of a connection failure, the bearing may move out of its position and cause damage to other machine components. In order to limit the freedom of movement of the bearing even in the event of a connection failure, at least one anti-start element is attached at least at the beginning and / or end of the functional element. The at least one anti-start element is also used to limit the volume, in particular the rubber volume, which forms the spacing between the at least one inner ring and the at least one outer ring. Furthermore, the design of the functional unit with metallic outer rings can lead to corrosion at the contact point between the elastic limitation and the machine housing. The applicant implements the protective and safety measures applicable at the time of application or on the priority date to prevent damage to the machines.

[0005] The object of the invention is therefore to further improve the safety of the operation of a textile machine. In particular, the object of the invention is to extend the operating life of a textile machine and thus conserve resources. Furthermore, the object of the invention is to improve the operation of a textile machine.

[0006] The problem is solved by a fastening device having the features of claim 1. The problem is further solved by a textile machine having the features of claim 10. The problem is solved by a digital twin having the features of claim 11. Furthermore, the problem is solved by a method for generating a digital twin and / or a fastening device having the features of claim 12. The problem is solved by a computer program product having the features of claim 13. The problem is solved by a method for producing a fastening device having the features of claim 14. The problem is solved by a computing device and / or a control device having the features of claim 15.

[0007] Preferred embodiments of the invention are the subject of the subclaims and are described below.

[0008] According to one aspect, the object is achieved in particular by a fastening device having the features of claim 1. In this case, a fastening device can be designed and configured to receive bearings of a textile machine. The textile machine can in particular be a rotor spinning machine. The fastening device can have at least one inner ring region and at least one outer ring region. The inner ring region and the outer ring region are in particular formed as one piece and can further define a functional device. A region is to be understood as a spatially delimited area of ​​a physical structure or component, wherein respective body surfaces of the structure or component facing an outer side, which body surfaces are also referred to as walls, delimit the area. In this case, an outer side of the physical structure is one side of the body surface orthe wall is to be understood as being arranged on a side facing away from a center of the physical structure, i.e. pointing away from the center of the physical structure, wherein an inner side of the physical structure is arranged on a side facing the center of the physical structure, i.e. pointing towards the center of the physical structure. Thus, the ring region is defined and delimited in particular by the outer sides of the walls of a physical, in other words three-dimensional, ring. Thus, the inner ring region can be understood and viewed as the inner ring and the outer ring region as the outer ring. Both the inner ring region or the inner ring and the outer ring region or the outer ring each comprise in particular walls with surfaces which can correspondingly define an outer side, an inner side and an end side. Characteristic of a ring region orRing is that it defines a passage around which the physical structures such as the walls and possible other physical structures of the ring or the ring area are arranged.

[0009] A fastening device can, in particular, be a bearing for the bearings of, in particular, rotating parts, in particular rapidly rotating parts, of the textile machine, in particular in a region of a motor and / or a rotor. This improves the reliability of the textile machine's operation, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular the running behavior of the rotating, in particular rapidly rotating, part. A rapidly rotating part is understood to be a part that rotates at a rotational speed of, in particular, more than 100,000 revolutions per minute during normal operation.Such a fast-rotating part can in particular be a spinning rotor of a rotor spinning machine, which in normal operation, i.e. a spinning operation in which a spinning thread is produced, can reach this rotational speed as well as higher speeds of, for example, up to 180,000 revolutions per minute and, depending on the application, up to 250,000 revolutions per minute.

[0010] The fastening device is characterized in particular in that the inner ring region and the outer ring region, which in particular form the functional device, consist of a single component, i.e., are formed in particular in one piece. In preferred embodiments, the inner and outer ring regions are formed in one piece. A one-piece design is understood to mean the design of various subcomponents, such as the inner ring region and the outer ring region, of a component, such as the fastening device, in particular from the same material or materials, wherein the various subcomponents are in any case integrally connected to one another.The functions to be fulfilled (stability, damping of oscillations and / or vibrations, support of the bearings) of the fastening device are made possible in particular by a geometric and material design.

[0011] In particular, the fastening device is designed to be axially symmetrical to its longitudinal axis, which can preferably form a rotational axis. The longitudinal axis is defined by the extension axis of the fastening device along its longest extent. Thus, a transverse axis of the fastening device runs perpendicular to its longitudinal axis.

[0012] There may also be regions of the fastening device in which the axial symmetry may be interrupted, although locally there may be point symmetry in a cross-sectional plane comprising the transverse axis to the longitudinal axis. The at least one inner ring region and the at least one outer ring region are in particular regions in which the outer ring region at least partially surrounds the inner ring region. The outer contour of the outer ring region and / or the outer contour of the inner ring region can be at least partially interrupted in a circumferential direction around the longitudinal axis of the fastening device. It can also be provided that the outer ring region has a cloverleaf structure, for example in a cross-sectional plane perpendicular to the longitudinal axis. A two-leaf, a three-leaf, a four-leaf, ... , or an n-leaf cloverleaf can serve as the basic shape.A cloverleaf structure specifically means that parts of the ring regions extend toward a center and then extend outward into other regions. The same can also apply to the inner ring region. In other words, this means that the ring regions do not have to have perfectly circular cross-sections. Rather, they can be cross-sections, for example, through spherical harmonics. The cloverleaf structures described above can also be provided.

[0013] The bearings of a textile machine are, in particular, bearings that enable the rotating parts of the textile machine to rotate. In particular, the rotating parts are rotatably mounted on a static textile machine, which thus forms a static reference frame. For this to happen, however, the bearings themselves must also be capable of being supported. The fastening device serves this purpose in particular, which is why it can also be referred to as a bearing for the bearings of rotating parts of the textile machine, especially in an area of ​​a motor and / or a rotor, such as a spinning rotor.

[0014] According to a preferred aspect, the fastening device can have at least one bridge designed to integrally connect the inner ring region and the outer ring region. This can increase the stability of the functional device, which makes it possible to realize the functions to be fulfilled (stability, damping of oscillations and / or vibrations, bearing support) of the fastening device, in particular through a geometric and material-technical design. This improves the operational reliability of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0015] The bridge is in particular a material connection between the at least one inner ring region and the at least one outer ring region, wherein the at least one inner ring region, the at least one outer ring region and the at least one bridge can be formed as a single piece. The bridge can be designed and arranged such that it merges with a base into the at least one inner ring region and in this case leads away from the at least one inner ring region in a linear shape, in particular in an S-line shape, along a sectional plane through the longitudinal axis and merges into the at least one outer ring region. Alternatively or additionally, a step function can also be simulated by the bridge.

[0016] According to a preferred aspect, the at least one bridge can be positioned at at least a first angle to the inner ring region. Specifically, the damping property can be realized through the geometric design, including at least the first angle or a combination of at least two angles and a lever arm length and / or different material thicknesses (i.e., widths). This improves the operational reliability of the textile machine, extends the service life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0017] A first angle is formed in particular between a tangential extension on the linear, in particular S-shaped, bridge and the base and / or a lever arm, in particular of the at least one outer ring region. In particular, the tangent can be applied at a point with maximum gradient in order to form the tangential extension. In particular, a cross-section along a sectional plane along the longitudinal axis of the at least one outer ring region is formed as the lever arm. In this case, a lever arm can also be understood to mean that in particular the at least one outer ring region merges in the direction of a central cross-sectional plane of the fastening device via the bridge into the base and thus into the at least one inner ring region.It is thus provided in particular that the at least one outer edge region is designed to be open, in particular in a direction parallel to the longitudinal axis outwards towards the edge of the fastening device, and can therefore hang freely there from a local perspective, as a result of which a lever arm can be formed, in particular at least locally, i.e. locally limited.

[0018] Alternatively or additionally, the bridge can form at least a second angle to form a transition area to the outer ring area. This improves the operational safety of the textile machine, extends its service life, and thus saves resources and improves operation, especially running performance.

[0019] The expression "second angle" can be understood in particular to mean that the second angle differs from the first angle, in particular in terms of its magnitude and / or sign. The second angle can be formed in particular between a tangential extension and the lever arm, as both are described elsewhere. Alternatively or additionally, the bridge can have a plurality of bridge sections, of which in particular at least two are arranged at the second angle to one another. This improves the reliability of operation of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0020] Bridge sections are understood to mean, in particular, regions of the bridge that differ from other sections either in terms of material thickness and / or orientation. This does not mean that the bridge is constructed in multiple pieces; rather, the bridge is constructed in one piece, in particular as described elsewhere, together with the at least one inner ring region and the at least one outer ring region.

[0021] In particular, it can be provided that the arrangement of the bridge sections results in a spring structure, wherein the spring structure is characterized in particular in that the orientation in a cross-sectional plane along the longitudinal axis alternates between left-rising and right-rising and / or between left-falling and right-falling. In other words, this means that the bridge sections are each at an angle to one another when one "traces" the cross-section through the sectional plane along the longitudinal axis from the at least one inner ring region to the at least one outer ring region, wherein the orientation of the bridge sections can accordingly alternate between left- and right-facing. This also makes it possible to form a so-called accordion structure. In particular, at least two bridge sections can be at the second angle to one another, although other angles can also be provided.

[0022] Alternatively or additionally, the bridge can have recesses. This allows for material savings, which in particular reduces weight. Corresponding holes and / or grooves can also serve, for example, for cooling and / or facilitate access to the bearing for regular relubrication, for example, by forming channels for lubricant that allow the lubricant to be released into the interior of the fastening device.

[0023] In this context, recesses are understood to mean, in particular, holes and / or grooves, as already mentioned above. Alternatively or additionally, particularly in additive manufacturing, areas can also be provided that have not been filled with a material, which can lead to the formation of corresponding recesses. These deliberate defects can be used according to the intended use of the holes and / or grooves.

[0024] Alternatively or additionally, a thickness of at least one selected from the bridge, at least one transition piece, and at least one damping element section of the outer ring region can taper from a base, with which the bridge transitions, in particular, into the inner ring region, in particular via the transition piece, to the damping element section, in particular to the end of the damping element section. This improves the operational reliability of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0025] The damping element section can, in particular, represent the lever arm described elsewhere, which can be formed, in particular, by the at least one outer ring region. The change in thickness corresponds, in particular, to a change in the material thickness from a first wall to a second wall. In particular, it can be ignored whether recesses, as described elsewhere, are provided in the wall. The thickness thus refers, in particular, to an imaginary path through the material from one side to the other, with the recesses being considered, in particular, as material inclusions.

[0026] A transition piece can be provided, which in particular transitions into at least one outer ring region. It can also be provided, in particular, that the transition piece differs in its orientation and / or thickness. This allows for optimized oscillation and / or vibration damping.

[0027] According to a preferred aspect, the fastening device can have an intermediate space between the outer ring region and the inner ring region, which intermediate space is designed in particular as a recess or in particular as a cavity. This improves the reliability of the operation of the textile machine, extends the operating life of the textile machine, whereby resources can be saved and operation, in particular running behavior, can be improved. The intermediate space is to be understood in particular as the region spanned by lines that run perpendicularly outwards from the central longitudinal axis and intersect the at least one inner ring region and the at least one outer ring region, wherein the region is delimited by an inner wall of the at least one outer ring region and an outer wall of the at least one inner ring region. In particular, this space is not filled with a material.This allows for a reduction in weight. Furthermore, the resulting geometry allows the functions of the functional device to be performed accordingly, preventing material wear that can lead to corrosion and fatigue of the fastening device at a contact area between the parts of a multi-piece fastening device.

[0028] In this case, a recess or, in particular, a cavity can be understood in such a way that these areas remain free during production and / or manufacturing, i.e., are not filled in an additive structure. In other preferred embodiments, the recess and / or the cavity can also be at least partially hollowed out in order to thereby form the free volume. In this case, post-processing can also occur within the scope of additive manufacturing, in which corresponding support elements are removed because these support elements were necessary and / or important for production, but are no longer required to fulfill the functions of the functional device described elsewhere.

[0029] According to a preferred aspect, the intermediate space can be at least partially filled with a filling. The filling can be selected and / or configured to adapt the function of the functional device to a specific application requirement.

[0030] In preferred embodiments, the fastening device comprises extensions of the functional device with additional elements, in particular in addition to the at least one inner and outer ring region and / or the bridge. For example, by filling the at least one intermediate space (also referred to as free space) with other materials, the damping properties can be influenced, among other things.

[0031] Additional elements can also include the inclusion of bores or grooves, for example, for cooling or to facilitate access to the bearing for regular relubrication. These grooves and / or bores can, in particular, penetrate an outer wall of the fastening device to access an inner area in which the bearings are arranged and supported. Inserts can be provided as a further element, which completely or partially enclose the at least one intermediate space and can, for example, serve as additional protection or perform other functions such as securing the bearing.

[0032] According to a preferred aspect, the fastening device can comprise at least one material selected from the group of metal alloys, plastics, natural materials or material composites of the aforementioned materials, which material forms the at least one inner ring region and the at least one outer ring region of the fastening device in one piece. In particular, all materials that have both stability and damping properties are suitable as the material. These include, among others, the aforementioned metal alloys, plastics, natural materials or material composites of these materials. By selecting suitable materials, in addition to positively influencing the damping behavior of the fastening device (also referred to as elastic fastening), the formation of corrosion between the functional device (also referred to as functional unit) and the machine mount can be prevented.This improves the safety of the textile machine's operation, extends the service life of the textile machine, thereby saving resources and improving operation, especially running behavior.

[0033] According to a preferred aspect, the fastening device can have at least one strut designed to space the at least one outer ring region from the at least one inner ring region. Targeted control of the damping by means of struts or by at least one outer ring region held solely by damping elements in the form of struts is thereby possible. This improves the operational reliability of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0034] A strut or strut shape can in particular be understood as a shape in which a local outer wall of the at least one inner ring region is connected to a local inner wall of the at least one outer ring region. In particular, unlike in the case of the linear, in particular S-line-shaped bridge, as described elsewhere, a base of the bridge does not merge into a lever arm, as described elsewhere. In the case of the S-line described above, it can in particular be provided that an outer wall of the at least one inner ring region merges into an outer wall of the bridge, wherein this outer wall of the bridge merges into the outer wall of the at least one outer ring region.This connection does not exist, in particular, in the case of a strut, since it does not have an outer wall in the sense of having a global wall, i.e., a wall extending across the entire surface of the strut, that points away from a longitudinal axis of the fastening device. Rather, the strut is arranged, in particular, in an intermediate space, as described elsewhere. In preferred embodiments, the struts extend, in particular, radially along at least a selection of the imaginary lines that extend perpendicularly away from the longitudinal axis in order to define the intermediate space, as described above.

[0035] According to a preferred aspect, the fastening device can be designed without anti-start elements. Constructing the functional device from a single component particularly reduces the need for anti-start elements, as failure of connection points within the functional device can be eliminated. This improves the operational reliability of the textile machine, extends the service life of the textile machine, thereby saving resources and improving operation, in particular, running behavior.

[0036] As described in detail, start-up protection elements are used, in particular in multi-piece fastening devices, to limit the freedom of movement of the bearing, even in the event of a connection failure between the damping elements, which are made in particular from rubber, and the inner and outer rings, which are made in particular from metal. For this purpose, in multi-piece fastening devices, the start-up protection elements are attached, in particular, at the beginning and end of the fastening device. The start-up protection elements are also used to limit the volume of the damping elements, in particular the rubber volume. Since the damping elements can be dispensed with if the damping is provided by the geometry and the choice of material, as described in detail, the damping elements, in particular in the form of rubber elements, can be dispensed with.This also eliminates the possibility of connection failure, which is why the fastening device can be designed without anti-tarnish elements. Particular attention should be paid to the necessity of these anti-tarnish elements. These can be installed for cosmetic reasons, but in doing so, they would no longer fulfill their intended technical function.

[0037] According to a preferred aspect, at least one reinforcement device can be incorporated into the intermediate space. The reinforcement device can, in particular, have legs. This improves the operational reliability of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running performance.

[0038] The reinforcement device can, in particular, replace at least one anti-start element that, as described above, could no longer fulfill its original function. However, at least one reinforcement device can be provided, in particular at a beginning and / or at an end (i.e., the edges) of the fastening device, which allows damping to be modulated. Structural stabilization can also be provided, which allows a lever arm to be assigned a support and / or a brake that can dampen the movement.

[0039] In preferred embodiments, the reinforcement device, in particular through the legs, can function as a spring device with restoring force in order to act as a counterpart to the lever arm as described elsewhere.

[0040] According to an independent aspect, a textile machine, in particular a rotor spinning machine, can have at least one fastening device, in particular as described in detail. The fastening device can be designed in particular as a bearing for receiving bearings, in particular bearings for supporting a spinning rotor of the rotor spinning machine. This improves the reliability of the operation of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior. The features, advantages, properties, and descriptions described elsewhere for the fastening device also apply accordingly to the textile machine. Thus, the textile machine can be specified accordingly by the features, advantages, properties, and descriptions described in this regard.Accordingly, the fastening device, as well as the textile machine, can be specified accordingly by the features, advantages, properties and descriptions with respect to the methods and / or uses described elsewhere, as well as with respect to the computing device, the control device, the digital twin and / or the computer program product.

[0041] According to an independent aspect, a digital twin of a fastening device can be provided, as described in detail. This improves the operational safety of the textile machine, extends the operating life of the textile machine, thereby saving resources, and improving operation, in particular runnability. The features, advantages, properties, and descriptions described elsewhere for the fastening device also apply accordingly to the digital twin. Thus, the digital twin can be specified accordingly by the features, advantages, properties, and descriptions described in this regard.Accordingly, the digital twin may be specified by the features, advantages, properties and descriptions with respect to the methods and / or uses described elsewhere, as well as with respect to the fastening device, the textile machine, the computing device, the control device and / or the computer program product.

[0042] In particular, a digital twin represents a machine-readable code which, when read or processed on a computing device and / or a control device as described elsewhere, provides information in the form of an electronic signal that allows conclusions to be drawn, at least in part, about the material-related, geometric, and / or physical properties of the actual fastening device. Corresponding values ​​and parameters that can be determined experimentally can be stored, processed, read out, and rewritten. Digital experiments and digital predictions based on the digital twin are also possible, such as the behavior of the digital twin in certain situations, such as certain installation situations and / or certain operating conditions, such as certain rotation conditions and / or speeds.These predictions also allow conclusions and / or predictions to be drawn about the behavior of the fastening device in the real world, for example, after production, e.g., through a manufacturing process as described elsewhere. In other words, the digital twin represents a digital, electronic image of the real object.

[0043] According to an independent aspect, a method for generating a digital twin, as described elsewhere, may be provided. Alternatively or additionally, a method for generating a fastening device, in particular a template for a fastening device, as described elsewhere, may be provided. This improves the reliability of the operation of the textile machine, extends the operating time of the textile machine, thereby saving resources and improving operation, in particular runnability. The features, advantages, properties, and descriptions described elsewhere for the fastening device, the textile machine, and / or the digital twin also continue to apply accordingly to the method for generating a digital twin.Thus, the method can be specified accordingly by the features, advantages, properties, and descriptions described in relation thereto. Accordingly, the fastening device, as well as the textile machine and / or the digital twin, can be specified accordingly by the features, advantages, properties, and descriptions with respect to the methods and / or uses described elsewhere, as well as with respect to the computing device, the control device, and / or the computer program product.

[0044] The method(s) may comprise at least one step of providing a basic shape of a fastening device, in particular as a digital twin of such a basic shape. The basic shape may comprise at least one outer ring region, at least one inner ring region, and in particular at least one bridge. A basic shape is understood to be, in particular, a template, such as a first draft of a fastening device, which makes it possible to provide an initial shape for optimization.

[0045] The method(s) can comprise(s) at least one step of simulating or providing at least one physical parameter of the basic shape. The physical parameter can in particular be an oscillation, a damping, an acceleration and / or a vibration. This can enable a simulation based on at least one corresponding physical parameter, which is in particular associated with at least one function of the functional device. The method(s) can comprise(s) at least one step of varying at least one design parameter of the basic shape, in particular a thickness and / or at least one angle. Material constants can also be processed as corresponding physical parameters of a material to be used. A design parameter can in particular be a geometric profile of a shape, for example of the bridge.Alternatively or additionally, it can be a filling density and / or a distance between at least one inner ring region and at least one outer ring region. Alternatively or additionally, a design parameter can also be at least one course of a line, in particular an S-line, a bridge, and / or an angle and / or a material thickness, in particular as described elsewhere.

[0046] The method(s) may comprise at least one step of simulating the physical parameter of the basic shape after varying the design parameter. Simulating the physical parameter makes it possible, in particular, to determine the influence of a variation in the design parameter, thereby enabling optimization, as described below.

[0047] The method(s) may comprise(s) at least one step of optimizing the at least one design parameter by comparing at least one of the physical parameters after simulation or provision of the physical parameter of the basic shape and / or a variation of the basic shape.

[0048] According to an independent aspect, a computer program product can be configured to perform one of the methods described above when executed on a computing device. This improves the reliability of the textile machine's operation, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular, runnability.

[0049] Alternatively or additionally, the computer program product may be designed and configured to output a digital twin as described elsewhere, in particular when the computer program product is executed on a control device of a manufacturing apparatus.

[0050] The features, advantages, properties, and descriptions that apply to the fastening device, the textile machine, the digital twin, as well as to the methods for producing it or for manufacturing a fastening device by the computing device and / or the control device, as described elsewhere, also apply accordingly to the computer program product. Thus, the computer program product can be specified accordingly by the features, advantages, properties, and descriptions described in this regard. Accordingly, the fastening device, the textile machine, the digital twin, as well as the methods for producing it and the methods for manufacturing a fastening device, as well as the computing device and / or the control device, can be specified accordingly by the features, advantages, properties, and descriptions of the computer program product.

[0051] According to an independent aspect, a method for producing a fastening device, as described elsewhere, can be provided. The method can comprise at least one step of providing a template of a fastening device. The template can, in particular, be a digital twin, as described elsewhere. This improves the reliability of the operation of the textile machine, extends the service life of the textile machine, thereby saving resources and improving operation, in particular running behavior.The features, advantages, properties, and descriptions that apply to the fastening device, the textile machine, the digital twin, the computer program product, as well as with regard to the methods for producing it, the computing device, and / or the control device, as described elsewhere, also apply accordingly to the methods for producing a fastening device. Thus, the methods for producing a fastening device can be specified accordingly by the features, advantages, properties, and descriptions described in this regard. Accordingly, the fastening device, the textile machine, the digital twin, as well as the methods for producing it, the computer program product, as well as the computing device and / or the control device can be specified accordingly by the features, advantages, properties, and descriptions of the method for producing a fastening device.

[0052] The method can comprise at least one step of integrally forming at least one inner ring region and at least one outer ring region. In particular, additive manufacturing of at least part of the functional device can be provided. In particular, it cannot be provided that the functional device can be formed from a block of material by material removal, but rather a body is formed by applying material layer by layer. In this case, support structures can also be formed which can be provided for the formation of the functional device and / or the fastening device in order to stabilize the structure during assembly, but which cannot be intended for later use. This can also lead to post-processing steps in the field of additive manufacturing.The surface can also be reworked to meet the corresponding surface requirements of the bearings on a textile machine.

[0053] According to an independent aspect, a computing device can be provided, comprising a computer program product as described elsewhere. The computing device can be designed and configured to perform a method for generating a digital twin and / or a fastening device, each as described elsewhere, when the computer program product is executed on the computing device. This improves the reliability of the operation of the textile machine, extends the operating life of the textile machine, thereby saving resources and improving operation, in particular running behavior.

[0054] A computing device can be a CPU, a computer, or a corresponding device that is designed and configured to execute a computer program product, to read and / or provide electronic signals, to enable a corresponding method for generating a digital twin. A simulation can also be enabled, which allows a digital twin to be prepared and optimized accordingly, in particular to then make it available to a corresponding control device, as described elsewhere, in particular as an electronic signal and / or alternatively on a storage medium, such as a USB, a CD, a DVD, a Blu-ray drive, a flash drive, an SSD, and / or an HDD.

[0055] Alternatively or additionally, a control device may be provided that comprises a computer program product as described elsewhere. The control device may be designed and configured to carry out a method for producing a fastening device as described elsewhere when the computer program product is executed on the control device of a manufacturing device. Alternatively, the control device may be connected to the manufacturing device, even if it is itself arranged remotely.

[0056] A control device can be a CPU, a computer or a corresponding device which is designed and configured to execute a computer program product, to read out and / or provide electronic signals in order to enable a corresponding method for producing a fastening device as described elsewhere, in particular from a digital twin as a template.

[0057] The features, advantages, properties, and descriptions described elsewhere for the fastening device, the textile machine, the digital twin, and with regard to the methods for its production or for the manufacture of a fastening device, as well as for the computer program product, also apply accordingly to the computing device and / or the control device. Thus, the computing device and / or the control device can be specified accordingly through the features, advantages, properties, and descriptions described in this regard.Accordingly, the fastening device, the textile machine, the digital twin, as well as the methods for producing it and the methods for producing a fastening device, the computer program product can be specified accordingly by the features, advantages, properties and descriptions with respect to the computing device and / or the control device.

[0058] In the following, embodiments of the invention are described in more detail with reference to figures, which show schematically and by way of example:

[0059] Fig. 1A two schematic cross sections through embodiments of multi-piece fastening devices;

[0060] Fig. 1B shows two perspective external views in a schematic representation of the cross sections of the embodiments of multi-piece fastening devices from Fig. 1A;

[0061] Fig. 2A is a perspective external view in a schematic representation of a one-piece embodiment;

[0062] Fig. 2B is a perspective sectional view in a schematic representation of the one-piece embodiment of Fig. 2A;

[0063] Fig. 3A is a schematic partial longitudinal sectional view of a one-piece

[0064] embodiment;

[0065] Fig. 3B is a schematic partial longitudinal sectional view of a one-piece embodiment;

[0066] Fig. 3C is a schematic partial longitudinal sectional view of a one-piece

[0067] embodiment;

[0068] Fig. 3D is a schematic partial longitudinal sectional view of a one-piece

[0069] embodiment;

[0070] Fig. 3E is a schematic cross-sectional view of a one-piece

[0071] embodiment;

[0072] Fig. 4A is a schematic representation of a method for creating a digital twin;

[0073] Fig. 4B is a schematic representation of a method for manufacturing a fastening device;

[0074] Fig. 5A is a schematic representation of a computing device;

[0075] Fig. 5B is a schematic representation of a control device; and

[0076] Fig. 5C is a schematic representation of a textile machine.

[0077] The same reference symbols are used for elements and structures with the same function and / or similarity.

[0078] Fig. 1A shows two cross-sections through embodiments of multi-piece fastening devices 5. In each case, a bearing 10 for bearings 55 (see schematically in Fig. 5C) is formed. Both embodiments shown in cross-section have features corresponding to the perspective view in Fig. 1B. Fig. 1B shows two external views of the cross-sections of the embodiments of multi-piece fastening devices 5 from Fig. 1A.

[0079] In particular, an interior space 15 is formed therein by an inner ring 17, wherein the inner ring 17 is assigned to a tube having a first diameter D1 and through which a longitudinal axis 39a can extend as an axis of symmetry 39. Outer rings 16 are correspondingly formed from metal and are assigned to an inner ring 17 at the beginning and at the end of the tube, which is arranged on an outer surface 21 of the tube. In this case, the outer ring 16 and inner ring 17 are each connected via a damper 20, which has rubber material as the material filling 24 and which connects the inner ring 17 and the outer ring 16 to each other.

[0080] The end faces 14 of the tube are open and, in particular, spaced apart from one another by a length L. The outer diameter D2 is the outer diameter of the outer ring 16. The anti-tarnish element 25 is inserted into a receptacle 22 formed by a spacing 18 between the outer ring 16 and the inner ring 17. Anti-tarnish elements 25 are provided, in particular, as the end face termination of the spacing 18 between the inner ring 17 and the outer ring 16. In a circumferential direction, the anti-tarnish element 25 is spaced apart from the outer ring 16 by a further spacing 19. The anti-tarnish element 25 can have recesses 26 on its end face, which allow the anti-tarnish element 25 to be arranged in an oriented manner. As shown here as an example, the recesses 26 can be arranged at a distance of 120° in the circumferential direction around the longitudinal axis 39a.

[0081] The two embodiments shown, which are compared in Figs. 1A and 1B, do not fall within the scope of the claims and differ from each other only by an inlet 11, which can serve for venting, cooling, and lubricant supply. Furthermore, a screw insert is also shown, which can perform corresponding functions and, in one embodiment, is arranged next to the inlet 11.

[0082] Fig. 2A shows an external view of a one-piece embodiment of a fastening device 5 according to a preferred embodiment. Fig. 2B shows a perspective sectional view of the one-piece embodiment 5 of Fig. 2A. The one-piece embodiment of the fastening device 5 is particularly designed and configured to receive bearings 55, as schematically shown in Fig. 50, of a textile machine 100. The textile machine 100 can in particular be a rotor spinning machine. The fastening device 5 can have at least one inner ring region 36 and at least one outer ring region 34. The inner ring region 36 and the outer ring region 34 are in particular formed in one piece.A fastening device 5 can, in particular, be a bearing 10 for the bearings 55 of rotating parts of the textile machine 100, in particular in a region of a motor and / or a rotor, such as a spinning rotor of the rotor spinning machine. The fastening device 5 of the preferred embodiment shown is hollow-cylindrical and has an inner ring region 36 and an outer ring region 34 at each end. The two inner ring regions 36 form, in particular, a tube that encloses an interior space 15 that serves as a bearing 10 for the bearings 55. There can also be embodiments in which the inner ring regions 36 are at least partially separated from the rest of the tube by a material thickening 13, as shown by way of example in Fig. 3D.The respective inner ring region 36 is integrally connected to the associated outer ring region 34 via a bridge 32, wherein the integrally formed section of the fastening device 5 forms an abstracted S-shape from the inner ring region 36 via the bridge 32 to the outer ring region 34. In particular, a base 41 is provided, via which the bridge 32 merges into the inner ring region 36. The base 41 is particularly characterized in that it projects perpendicularly with a defined extension length from an outer wall 36a of the inner ring region 36, wherein the bridge 32 is integrally formed with the base 41. The outer ring region 34 and the inner ring region 36 are spaced from one another by an intermediate space 38.

[0083] Fig. 3A shows a schematic partial longitudinal sectional view of a one-piece embodiment of a fastening device 5, in which the at least one bridge 32 is positioned at at least a first angle a to the inner ring region 36 (left side of the figure). A base 41 can also be provided, via which the bridge 32 transitions into the inner ring region 36. An exemplary step shape corresponding to a Z-shape is shown here.

[0084] Alternatively or additionally, the bridge 32 can form at least a second angle b with a transition region 31 to the outer ring region 34. The transition region 31 and the outer ring region 34 can also be arranged at a third angle (not shown) to one another (right side of the figure). Here, too, the embodiment is particularly designed as a single piece. The second angle b is spanned in particular between a tangential extension of the bridge 32 and the transition region 31, in particular a tangential extension thereof.

[0085] The fastening device 5 can be designed symmetrically or asymmetrically, thus it can also have the different functional devices consisting of an inner ring region 36 and an outer ring region 34 at both ends, as shown in Fig. 3A. The functional devices shown here can occur individually or in any conceivable combination with the embodiments described in Figs. 3A to 3E.

[0086] Fig. 3B shows a schematic partial longitudinal sectional view of a one-piece embodiment of a fastening device 5 according to a further preferred embodiment. On the left-hand side of the figure, an embodiment of a functional device is shown in which the fastening device 5 has an intermediate space 38 between the outer ring region 34 and the inner ring region 36, which is designed in particular as a recess or in particular as a hollow space. In the embodiment shown, the bridge 32 has in particular a plurality of bridge sections 32a, 32b, 32c. These can each be at different angles to one another, but also in particular at least two can be at the second angle b to one another. Here, an accordion structure is shown as an example, which can serve as a spring element.

[0087] On the right side of the figure, an embodiment is shown in which the thickness d tapers from the bridge 32, from a transition piece 37 and from at least one damping element section 35 of the outer ring region 34, starting from the base 41, with which the bridge 32 merges in particular into the inner ring region 36, in particular via the transition piece 37, towards the damping element section 35, in particular up to the end of the damping element section 35.

[0088] The fastening device 5 can be designed symmetrically or asymmetrically, thus it can also have different functional devices at both ends, as shown by way of example in Fig. 3B. The functional devices shown here can occur individually or in any conceivable combination with the embodiments described in Figs. 3A to 3E.

[0089] Fig. 3C shows a schematic partial longitudinal sectional view of a one-piece embodiment of a fastening device 5 according to a further preferred embodiment. The left-hand side of the figure shows an embodiment of a functional device in which the fastening device 5 has a gap 38 between the outer ring region 34 and the inner ring region 36, which gap is designed in particular as a recess or in particular as a cavity. This gap 38 can be at least partially filled with a filling 44, as shown by way of example on the left-hand side of Fig. 3C. The left-hand side of the figure shows, in particular, an embodiment in which the bridge 32 has a plurality of bridge sections 32a, 32b, 32c. These can each be at different angles to one another, but in particular at least two can also be at the second angle b to one another (cf. Fig. 3B).Here, an example of an accordion structure is shown, which can serve as a spring element to dampen oscillations and vibrations. The accordion structure is filled with a filling material 44. The accordion structure can be provided with several bridge sections 32a, 32b, 32c; however, any of the other described embodiments for bridges 32 can also be provided and combined with a filling material 44 in the intermediate space 38.

[0090] On the right side of the figure, a functional device is shown, in which the base 41, in particular, has recesses f. These recesses f serve, on the one hand, in particular for cooling and / or supplying lubricant to the bearings. According to an embodiment not shown, one or more recesses f with defined dimensions can also be provided in the bridge 32, the inner ring region 36, and / or the outer ring region 34.

[0091] The fastening device 5 can be designed symmetrically or asymmetrically, thus it can also have different functional devices at both ends, as shown by way of example in Fig. 3C. The functional devices shown here can occur individually or in any conceivable combination with the embodiments described in Figs. 3A to 3E.

[0092] Fig. 3D shows a schematic partial longitudinal sectional view of a one-piece embodiment of a fastening device 5 according to another preferred embodiment. In particular, at least one reinforcement device 50 is introduced into the intermediate space 38, which reinforcement device has, in particular, legs 45, 47 and legs 49, 51, respectively. The legs 45, 47, 49, 51 serve, in particular, to reinforce the structure, but can also be designed as a damping element. This can, in particular, assume the function of a filling 44 and thus, in particular, replace it.

[0093] Furthermore, the inner ring region 36 is formed in a connection region for the transition piece 37 with a material thickening 13 as described above. The transition piece 37 merges into the bridge 32, which is adjoined by the outer ring region 34. The inner ring region 36 is formed integrally with the outer ring region 34 via the material thickening 13, the transition piece 37, and the bridge 32.

[0094] According to a preferred embodiment (not shown), a strut 42 can be arranged in the intermediate space 38, which locally connects the inner ring region 36 to the outer ring region 34 and partially supports it, as shown by way of example in the cross-sectional view of the fastening device 5 in Figure 3E. This allows a targeted damping effect to be achieved.

[0095] Furthermore, the fastening device 5 can be designed in particular free of anti-tarnish elements 25, since these are not necessary since a connection detachment can no longer occur if the intermediate space 38 is not filled with a filling 44.

[0096] The fastening device 5 can be designed symmetrically or asymmetrically, thus it can also have different functional devices at both ends, as shown by way of example in Fig. 3D. The functional devices shown here can occur individually or in any conceivable combination with the embodiments described in Figs. 3A to 3E.

[0097] Fig. 3E shows a schematic cross-sectional view of a one-piece embodiment of a fastening device 5 according to another preferred embodiment. The fastening device 5 has, in particular, struts 42 for connecting the inner ring region 36 and the outer ring region 34 to one another and also for spacing them apart in a supporting manner. Here, the struts 42 are arranged, for example, at a 45-degree angle to one another in the circumferential direction around the longitudinal axis 39a, which runs through the intersection of the transverse axes 39b and perpendicular to them.

[0098] The preferred embodiments of the fastening device 5 shown and described in Figs. 2A to 3E are in particular made of a material selected from the group of materials consisting of metal alloys, plastics, natural materials, or composite materials made of the aforementioned materials in order to integrally form the at least one inner ring region 36 and the at least one outer ring region 34 of the fastening device 5. In the embodiments shown here, the bridge 32, the transition piece 37, the base 41, and the struts 42 are also integrally formed with the at least one inner ring region 36 and the at least one outer ring region 34 and are thus in particular made of the same and / or the same materials.

[0099] Fig. 4A shows a schematic representation of a method 200 for generating a digital twin 110. Alternatively or additionally, a method 200 for generating a fastening device 5, in particular a template for a fastening device 5, as described elsewhere, can be provided.

[0100] In a presentation step I, a basic shape of a fastening device 5 can be presented, in particular as a digital twin 110 of such a basic shape. The presentation relates in particular to the provision of the corresponding electronic information and / or data, such as can be provided in a digital twin 110. The basic shape can have at least one outer ring region 34, at least one inner ring region 36, and in particular at least one bridge 32 connecting the inner ring region 36 to the outer ring region 34.

[0101] In a simulation step Ha or alternatively in a provision step Hb, at least one physical parameter of the basic shape can be simulated or provided. The physical parameter can be, in particular, an oscillation, a damping, an acceleration, and / or a vibration.

[0102] In a step III of varying at least one design parameter of the basic shape, in particular a thickness and / or at least one angle, the corresponding design parameters can be varied in order to adapt the design, in particular based on the at least one physical parameter provided.

[0103] In a simulation step IV of the at least one physical parameter of the basic form after varying the design parameter III, the effect of the variation in the design parameter on the system performance and / or on the physical behavior can be simulated. This makes it possible, in particular, to directly verify a variation, in particular in order to be able to perform an optimization step V.

[0104] In a step of optimizing V the at least one design parameter, at least one of the physical parameters can be compared with the physical parameter of an iterative, previous step after simulation or provision of the physical parameter of the basic shape and / or a variation of the basic shape, in particular in order to optimize the system performance.

[0105] Fig. 4B shows a schematic representation of a method 300 for producing a fastening device 5, as described elsewhere. The method 300 may include at least one step of providing a template VI of a fastening device 5. The template may, in particular, be a digital twin 110, as described elsewhere.

[0106] The method 300 comprises, in particular, a step VII of integrally forming at least one inner ring region 36 and at least one outer ring region 34. In addition, in the step VII of integrally forming, a bridge 32 can also be formed accordingly, which is integrally connected to the inner ring region 36 and the outer ring region 34.

[0107] Fig. 5A shows a schematic representation of a computing device 130. This device comprises, in particular, a computer program product 120, which is particularly designed to carry out one of the methods 200, 300 described above when executed on the computing device 130. The computer program product 120 can comprise a digital twin 110, which can be output, in particular, as an electronic signal by a computing device, for example, to a control device 140, in order to form a fastening device 5.

[0108] The computing device 130 is in particular designed and configured to carry out a method 200 for generating a digital twin 110 and / or a fastening device 5, each as described elsewhere, when the computer program product 120 is executed on the computing device 130.

[0109] Fig. 5B shows a schematic representation of a manufacturing device 145 having a control device 140. The control device 140 has, in particular, a computer program product 120, as described elsewhere. The computer program product 120 can, in particular, contain machine-readable code that has instructions for controlling the manufacturing device 145 or by means of which such instructions can be determined. The control device 140 can be designed and configured to carry out a method 300 for producing a fastening device 5, as described elsewhere, when the computer program product 120 is executed on the control device 140 of the manufacturing device 145.The manufacturing device 145 receives, in particular, electronic signals that control devices of the manufacturing device 145, for example, to control the removal of material (top-down method) and / or to enable the additive buildup of material (bottom-up method). The manufacturing device 145 can be controlled, in particular, by the control device 140 in such a way as to construct a fastening device 5 based on the basis, in particular a digital twin 110, determined in particular in a method 200.

[0110] Alternatively or additionally, the computer program product 120 may be designed and configured to output the digital twin 110 as described elsewhere, in particular when the computer program product 120 is executed on the control device 140 of the manufacturing device 145.

[0111] Fig. 5C shows a schematic representation of a textile machine 100. The textile machine 100 is, in particular, a rotor spinning machine, which in particular has at least one fastening device 5, in particular as described in detail. The fastening device 5 serves, in particular, as a bearing 10 for bearings 55, which are, in particular, bearings for supporting a spinning rotor of a rotor spinning machine.

[0112] "May" refers in particular to optional features of the invention. Accordingly, there are also further developments and / or embodiments of the invention that additionally or alternatively comprise the respective feature(s).

[0113] If necessary, isolated features may also be selected from the combinations of features disclosed here and used in combination with other features to define the subject matter of the claim, dissolving any structural and / or functional connection that may exist between the features.

[0114] Furthermore, individual features of the embodiments described in Figures 1A and 1B can be combined with at least one of the described preferred embodiments, as long as these features do not contradict or conflict with the features of the described preferred embodiments covered by the subject matter of the claims. For example, the embodiment according to one of Figures 2A to 3E can also have a screw insert as shown in Figure 1B. Furthermore, the fastening device 5 can be provided with dimensions such as the inner diameter D1, the outer diameter D2, and the length L, as described in connection with Figures 1A and 1B.

[0115] The features, advantages, properties, and descriptions presented and detailed above for one category also apply accordingly to the other categories. Thus, the methods and / or uses can be specified accordingly by the features, advantages, properties, and descriptions relating to the devices and / or systems. Accordingly, the devices and / or systems can be specified accordingly by the features, advantages, properties, and descriptions relating to the methods and / or uses.

[0116] List of reference symbols

[0117] Fastening device

[0118] storage

[0119] inlet

[0120] drilling

[0121] Material thickening

[0122] front side

[0123] Interior

[0124] Outer ring

[0125] inner ring

[0126] spacing further spacing

[0127] mute

[0128] outer surface

[0129] Recording

[0130] Material filling

[0131] Tarnish protection element

[0132] recess

[0133] Longitudinal section through functional device

[0134] Transition area

[0135] Bridge a, 32b, 32c Bridge sections outer ring area

[0136] Damping element section inner ring area a outer wall of the inner ring area

[0137] transition piece

[0138] space

[0139] Axis of symmetry a Longitudinal axis b Transverse axis

[0140] base

[0141] Strut 44 filling

[0142] 50 Reinforcement device

[0143] 45, 47, 49, 51 Legs of the reinforcement device

[0144] 55 warehouses

[0145] 100 textile machines

[0146] 110 digital twin

[0147] 120 Computer program product

[0148] 130 computing device

[0149] 140 Control device

[0150] 145 Manufacturing device

[0151] 200 Method for generating a digital twin and / or a fastening device

[0152] 300 manufacturing processes

[0153] D1 inner diameter

[0154] D2 outer diameter

[0155] L Length a First angle b Second angle d Thickness f Recess

[0156] I Presentation of a basic form of a fastening device

[0157] Ha Simulating a physical parameter of a basic shape

[0158] Hb Providing a physical parameter of a basic shape

[0159] 111 Varying at least one design parameter of the basic shape

[0160] IV Simulating a physical parameter of the basic shape after varying the design parameter

[0161] V Optimizing at least one design parameter

[0162] VI Providing a template of a fastening device, in particular a digital twin

[0163] VII integral formation of at least one inner ring region and one outer ring region

Claims

Patent claims 1. Fastening device, in particular bearing (10), designed and configured to receive bearings of a textile machine, in particular a rotor spinning machine, having at least one inner ring region (36) and at least one outer ring region (34), characterized in that the inner ring region (36) and the outer ring region (34) are formed in one piece.

2. Fastening device according to claim 1, characterized in that at least one bridge (32) is designed to integrally connect the inner ring region (36) and the outer ring region (34) to one another.

3. Fastening device according to claim 2, characterized in that the at least one bridge (32) is at least at a first angle (a) to the inner ring region (36); and / or wherein the bridge (32) forms at least a second angle (b) to a transition region (31) to the outer ring region (34); and / or wherein the bridge (32) has a plurality of bridge sections (32a, 32b, 32c), of which in particular at least two are at the second angle (b) to one another; and / or wherein the bridge (32) has recesses (f); and / or wherein a thickness (d) of at least one of the bridge (32), of at least one transition piece (37) and of at least one damping element section (35) of the outer ring region (34) tapers from a base (41), with which the bridge (32) transitions into the inner ring region (36), in particular via the transition piece (37), towards the damping element section (35), in particular up to the end of the damping element section (35).

4. Fastening device according to one of the preceding claims, characterized in that an intermediate space (38), in particular a recess or in particular a cavity, is formed between the outer ring region (34) and the inner ring region (36).

5. Fastening device according to claim 4, characterized in that the intermediate space (38) is at least partially filled with a filling (44).

6. Fastening device according to claim 4 or 5, characterized in that at least one reinforcing device (50), in particular having legs (45, 47, 49, 51), is introduced into the intermediate space (38).

7. Fastening device according to one of the preceding claims, characterized in that at least one material selected from the group of materials of - metal alloys; - plastics; - natural materials; or - Material composites made of the above-mentioned materials; the at least one inner ring region (36) and the at least one outer ring region (34) of the fastening device are formed in one piece.

8. Fastening device according to one of the preceding claims, characterized in that at least one strut (42) is designed as a bridge (32) in order to space the at least one outer ring region (34) from the at least one inner ring region (36).

9. Fastening device according to one of the preceding claims, characterized in that the fastening device is designed free of anti-start elements (25).

10. Textile machine (100), in particular a rotor spinning machine, comprising at least one fastening device according to one of the preceding claims, designed as a bearing (10) for receiving bearings.

11. Digital twin (110) of a fastening device according to one of claims 1 to 9.

12. Method (200) for generating a digital twin (110) according to claim 11 and / or a fastening device according to one of claims 1 to 9, characterized by the steps: - a presentation (I) of a basic form of a fastening device, in particular as digital twin (110) of such a basic shape, wherein the basic shape has at least one outer ring (34), at least one inner ring (36) and at least one bridge (32); - simulating (Ha) or providing (Hb) at least one physical parameter of the basic shape, in particular an oscillation; - varying (III) at least one design parameter of the basic shape, in particular a thickness and / or at least one angle; - simulating (IV) the physical parameter of the basic shape after varying the design parameter; - optimizing (V) the at least one design parameter by comparing at least one of the physical parameters after simulation or provision of the physical parameter of the basic shape and / or a variation of the basic shape.

13. A computer program product (120) configured and configured to perform a method according to claim 12 when executed on a computing device (130); and / or configured and configured to provide or output a digital twin (110) according to claim 11, in particular when executed on a control device (140) of a manufacturing device (145).

14. A method (300) for producing a fastening device according to one of claims 1 to 9, characterized by the step: - providing (VI) a template of a fastening device, in particular a digital twin (110) according to claim 11; - a one-piece formation (VII) of at least one inner ring region (36) and at least one outer ring region (34).

15. A computing device (130) comprising a computer program product (120) according to claim 13, designed and configured to carry out a method (200) according to claim 12 when the computer program product (120) is executed on the computing device (130); and / or a control device (140) comprising a computer program product (120) according to claim 13, designed and configured to carry out a method (300) according to claim 14 when the computer program product (120) is executed on the control device (140) of a manufacturing device (145).