Device and method for winding a rotor or stator, and production cell

Abstract

The invention relates to a device (1) for winding a rotor (2) or stator, comprising a receptacle (3) into which a non-wound rotor (2) having a rotor axis (4) or a non-wound stator having a stator axis is able to be inserted, wherein a winding wire (5) to be wound on the rotor (2) or stator is able to be guided through by a feed element (6), and the feed element (6) is designed to be linearly displaceable in relation to the rotor (2) or stator parallel to the rotor axis (4), the feed element (6) being coupled to a first linear drive (7), the first linear drive (7) in turn being coupled to a second linear drive (8), such that the feed element (6) is able to be moved parallel to the rotor axis (4) or stator axis by the first linear drive (7) and / or the second linear drive (8).

Description

[0001] P231589

[0002] - 1 -

[0003] Device and method for winding a rotor or stator as well as manufacturing cell

[0004] The present invention relates to a device and a method for winding a rotor or stator, comprising a receptacle into which an unwound rotor with a rotor axis or an unwound stator with a stator axis can be inserted, wherein a winding wire for winding the rotor or stator can be passed through a feed element, and the feed element is designed to be linearly displaceable relative to the rotor or stator parallel to the rotor axis. The invention further relates to a manufacturing cell.

[0005] Current state-of-the-art winding technologies for rotors and stators offer systems that allow for a scalable number of spindles within a standardized machine design. These machines are often equipped with central winding gearboxes that standardize wire feeding and support the synchronous movement of the rotors via a vertical shaft. Such solutions are designed for the mass production of electric motors and generators, as they enable the efficient, simultaneous winding of multiple units.

[0006] However, the current state of the art also has considerable disadvantages. Problems with component tolerances between the spindles can impair the precision of the windings and thus negatively affect the performance and reliability of the end products. Furthermore, the use of central routing gearboxes and king shafts, which synchronize multiple spindles, results in an increased mass that must be moved. This limits the system's response speed to changes in winding parameters and reduces the machine's dynamics, which is particularly problematic in precision-critical applications.

[0007] Another disadvantage is the high financial outlay required to set up machines with multiple spindles. This can pose a significant financial hurdle, especially for smaller companies or those requiring flexible production technology. The fixed connection of the spindles via central gearbox P231589

[0008] The use of two or king shafts also limits the individual adaptability of each spindle to specific winding tasks, thus restricting the machine's versatility. Since the movement of the wire guide system is centrally controlled, it is not possible to adjust the stroke for individual spindles, further limiting flexibility in the production of products with different winding characteristics or wire diameters.

[0009] Finally, the reliance on a central king shaft for rotation limits the ability to produce motors or generators with different numbers of poles. This is a significant disadvantage in a market that demands an increasing variety of motor designs and specialized applications.

[0010] Overall, there is a clear need for more advanced winding systems that offer greater flexibility, improved precision and lower costs to meet the dynamic requirements in the manufacturing of electric motors and generators.

[0011] It is therefore an object of the invention to provide an improved device and a method for winding a rotor or stator that avoids or at least reduces the problems known from the prior art. It is also an object of the invention to realize an optimized manufacturing cell.

[0012] This problem is solved by a device for winding a rotor or stator comprising a receptacle into which an unwound rotor with a rotor axis or an unwound stator with a stator axis can be inserted, wherein a winding wire for winding the rotor or stator can be passed through a feed element, and the feed element is designed to be linearly displaceable relative to the rotor or stator parallel to the rotor axis, wherein the feed element is coupled to a first linear drive, wherein the first linear drive is in turn coupled to a second linear drive, so that the feed element can be displaced parallel to the rotor axis or stator axis by the first linear drive and / or second linear drive and / or the feed element is coupled to a first linear drive and the receptacle of P231589

[0013] - 3 -

[0014] Rotors or stators are coupled with a second linear drive, so that the feed element can be moved parallel to the rotor axis or stator axis by the first linear drive and / or the receiver can be moved parallel to the rotor axis or stator axis by the second linear drive.

[0015] This device offers the advantage that the linear adjustability of the feed element, combined with the two linear drives, allows for precise control of the winding motion. This results in improved accuracy during the winding process, particularly in the placement of the winding wire on the rotor or stator. The flexible coupling of the linear drives allows the motion sequence to be optimally adapted to the specific requirements of the winding geometry. This enables not only increased production speed but also improved winding quality, as acceleration and positioning can be optimized.

[0016] Furthermore, the pull-off forces on the winding wire can be kept relatively constant if the feed element is controlled by the opposing movement, acceleration, or jerk of the two linear drives. This opposing control allows for better balancing and more precise regulation of the forces acting on the winding wire, which supports uniform and reliable wire laying. This leads to improved winding quality and reduces the risk of wire distortion or breakage. In addition, the optimized force distribution enables higher production speeds, as the stresses on the wire can be controlled more efficiently.

[0017] A further advantage of the technology according to the invention is the independent winding on different spindles, which is complemented by the possibility of separate loading and unloading. This flexibility allows for efficient production process design, in which different products can be manufactured simultaneously without disrupting overall operations. This leads to optimal utilization of the system and reduces downtime, which in turn lowers production costs. P231589

[0018] - 4 -

[0019] The machine's easy scalability, particularly due to a basic design that can start with just one spindle, is another crucial advantage. This modularity allows companies to start with a lower initial investment and expand production capacity as needed, without having to purchase entirely new machines.

[0020] Another advantage is the machine's ability to handle mixed operation, enabling the processing of various active lengths, outer diameters, pole widths, number of turns, laying directions, and wire diameters on the same machine. This adaptability makes it possible to manufacture a wide range of products without lengthy and costly changeover processes. Short setup times, as well as the option of "on-the-fly" setup, where the machine can be reconfigured during operation, significantly contribute to increased flexibility and efficiency.

[0021] First, the individual elements of the claimed invention are explained in the order in which they are mentioned in the claim set, and subsequently, particularly preferred embodiments of the invention are described.

[0022] Device for winding a rotor or stator

[0023] For the purposes of this patent application, a device for winding a rotor or stator is a technical arrangement used to apply winding wire to a rotor or stator in order to prepare it for use in electrical machines, such as electric motors or generators. This device enables automated and optimized wire laying, in which the wire is wound under controlled tension onto the specific geometry of the rotor or stator, thus creating the desired winding.

[0024] The device includes a receptacle into which the rotor or stator is inserted with its axis. This receptacle is preferably designed to be both linearly displaceable and pivotable to ensure precise alignment of the workpiece during the winding process. The linear movement is preferably achieved by one or more linear drives, P231589

[0025] - 5 - which operate in different axes to enable flexible and precise positioning. Preferably, a first and a second linear drive are coupled together in such a way that the feed element, through which the winding wire is guided, can be moved parallel to the rotor or stator axis. The counter-rotating control of the two linear drives offers the advantage that the pull-off forces on the winding wire can be kept constant, resulting in precise winding quality. The linear movements and the rotational movement are advantageously controlled by a central control unit, which ensures that the winding parameters, such as the wire tension, the laying speed, and the positioning of the wire, are optimally coordinated.Advantageously, the device has a modular design, allowing for various configurations and adaptations to different rotor and stator sizes as well as winding requirements.

[0026] Recording

[0027] For the purposes of this patent application, a fixture is a device component used to position a rotor or stator during the winding process. The fixture can preferably be moved both axially and orthogonally to the axis of the rotor or stator to enable precise positioning and alignment of the workpiece during the winding process. Furthermore, in certain embodiments, it can be pivotable relative to the rotor or stator axis, allowing for even finer adjustment of the wire routing to the specific geometry of the workpiece. The fixture also ensures that the rotor or stator is held in a desired position during winding, without any movement or vibration that could impair the winding quality.

[0028] The fixture preferably includes a clamping or fixing element that securely clamps the rotor or stator while simultaneously allowing the workpiece to rotate around its own axis. Advantageously, the fixture is coupled with linear drives that allow axial and / or orthogonal displacement to dynamically and precisely position the rotor or stator during the winding process. Furthermore, the fixture can be designed to allow a swiveling movement.

[0029] - 6 - enables, which increases the accuracy and flexibility of wire laying, especially in complex winding requirements.

[0030] winding wire

[0031] For the purposes of this patent application, a winding wire is an elongated, conductive wire used to produce windings on a rotor or stator. The winding wire preferably consists of an electrically conductive material such as copper or aluminum, which, due to its excellent conductivity, ensures optimal transmission of electrical energy. The wire may have an insulating coating that ensures that the individual turns of the wire within the winding remain electrically insulated from one another. This insulation is advantageous for preventing short circuits and malfunctions in the finished winding.

[0032] The winding wire is designed to offer high mechanical flexibility, allowing it to be precisely applied to the rotor or stator during winding without breaking or deforming. Simultaneously, the wire must possess sufficient tensile strength to withstand the forces generated during the winding process, particularly when higher wire tension is required. The wire thickness can vary depending on the electrical performance requirements of the finished winding. Preferably, the winding wire is selected to be optimally adapted to the specific winding parameters, both mechanically and electrically.

[0033] The function of the winding wire is to generate an electromagnetic field by winding it around the rotor or stator. This field is necessary for converting electrical energy into mechanical energy (in motors) or vice versa (in generators). It is crucial that the wire is wound evenly and precisely onto the workpiece to ensure a uniform distribution of the magnetic field.

[0034] Possible embodiments of the winding wire include wires of different materials, diameters, and coatings. Besides copper and aluminum P231589

[0035] - 7 - Alloys with special mechanical or electrical properties can also be used, for example, to tolerate higher temperatures or aggressive environmental conditions. The insulating coating can be in various forms depending on the application, such as paint, enamel, or a plastic coating. Advantageously, for high power density applications, the wire is thinner and provided with an insulating layer that withstands high thermal loads. Alternatively, thicker wire diameters can be chosen for special applications to achieve a higher current-carrying capacity.

[0036] Feed element

[0037] For the purposes of this patent application, a feeding element is a device through which the winding wire is fed and precisely positioned during the winding process. The feeding element serves to guide the winding wire from a wire source to the winding position in a controlled manner and to lay the wire with the required accuracy along the intended winding geometry.

[0038] The feed element preferably has a guide element that directs the wire through a special opening or guide sleeve. This design ensures that the wire does not deviate unintentionally and always reaches the desired position on the rotor or stator precisely. Advantageously, the feed element is designed to perform a linear movement along the rotor or stator axis, thereby continuously adjusting the position of the winding wire to enable uniform and error-free winding. This linear movement is preferably achieved by one or more linear actuators that set the feed element into precise and controlled motion.

[0039] Regarding possible embodiments, the feed element can take on different designs. In a preferred embodiment, it consists of a sleeve through which the winding wire is guided, the sleeve being mounted on a rail that allows for slidable movement along the axis of the rotor or stator. An alternative embodiment provides that the feed element consists of several movable parts which form a P231589

[0040] - 8 - offer additional flexibility to support more complex winding geometries. It is also conceivable that the feed element is equipped with sensors that monitor the wire path and make corrections to the wire's positioning in real time to ensure optimal winding quality.

[0041] Linear actuator

[0042] For the purposes of this patent application, a linear drive is to be understood as a device that enables an externally driven, rectilinear movement of a mechanical part. The linear drive converts an supplied energy, for example mechanical, electrical, pneumatic, or hydraulic energy, into a linear motion. This motion serves the precise positioning or displacement of components, such as, in the present invention, the feed element or the mounting of a rotor or stator.

[0043] The movement can be controlled by a drive unit, which is configured by a control unit to enable precise synchronization and adjustment of the linear movements. This control system also allows for the implementation of complex motion sequences, such as the counter-rotating movement of two linear drives to improve wire tension and guidance.

[0044] A linear actuator typically comprises a drive unit, preferably a servo motor, to ensure high positioning accuracy and fast response times. A linear motor operating without mechanical intermediate components can be used to directly generate the linear motion, minimizing friction losses and maximizing positioning accuracy. Alternatively, the drive can be achieved via a ball screw or a belt or chain mechanism coupled to a motor to generate the linear motion. The mechanism provides the necessary conversion of the motor's rotational motion into linear motion. Additionally, guide rails or linear bearings can be used to stabilize the drive unit's movement and ensure low friction. P231589

[0045] - 9 -

[0046] Advantageously, the linear drive is controlled by a control unit capable of precisely regulating both the speed and position of the linear movement. This control system enables the simultaneous or independent movement of multiple linear drives and ensures that the winding wire guidance is optimally aligned with the movement sequences. Furthermore, the use of multiple linear drives allows for increased flexibility and accuracy by enabling the winding wire to be guided and positioned from different directions.

[0047] Possible embodiments of the linear drive include electric linear drives based on servo motors, offering high dynamics and precision. A combination of several linear drives can preferably be used to achieve counter-rotating or parallel movements, as in the present invention. Another conceivable embodiment is a pneumatic linear drive operated by compressed air, characterized by a robust design and long service life. This design is particularly suitable for applications where electrical systems cannot be used. Finally, a hydraulic linear drive is also conceivable, capable of generating high forces in a small space and therefore suitable for applications requiring the movement of heavy loads.

[0048] control unit

[0049] For the purposes of this patent application, a control unit is a device that coordinates and controls the movements of the various linear drives within the winding device. This control unit is configured to monitor the movements of the linear drives and to issue precise instructions for their synchronous or differential, e.g., counter-rotating, movements. It not only coordinates the movements along the axes of the feed element and the receiving element, but preferably also controls the wire tension and the winding process as a whole. P231589

[0050] - 10 -

[0051] The primary function of the control unit is therefore to coordinate the linear movements of the drives to ensure uniform and precise wire laying on the rotor or stator. To achieve this, the control unit processes inputs regarding the desired winding parameters, such as wire speed, positioning, and tension, and controls the corresponding drives in real time. The control unit's ability to coordinate opposing movements is particularly advantageous, as it helps to maintain constant wire pull-off forces and thus improve winding quality.

[0052] The control unit preferably comprises a central processor unit connected to sensors and actuators to monitor and control the position and status of the drives. Preferably, the control unit is equipped with a graphical user interface that allows the operator to easily configure the winding parameters and monitor the process. Communication between the control unit and the linear drives is advantageously achieved via real-time data transmission to minimize delays and ensure a high response speed.

[0053] Possible configurations of the control unit include both centralized and decentralized control architectures. In a centralized configuration, a single central unit controls all linear drives and sensors. This configuration is particularly space-saving and allows for easy maintenance, as all control components are located in one place. In a decentralized configuration, on the other hand, the control can be distributed across multiple units, each controlling a specific drive area or functional part of the device. This decentralized structure allows for greater flexibility and scalability of the device, as additional drives or functional units can be easily integrated. In both configurations, real-time control of the movements by the control unit is advantageous for ensuring high precision and speed of the winding process.

[0054] Advantageous embodiments of the invention

[0055] According to an advantageous embodiment of the invention, the mounting can be designed to be linearly displaceable orthogonally to the rotor axis. (P231589)

[0056] - 11 - The linear adjustability of the fixture, orthogonal to the rotor or stator axis, offers the advantage of allowing the position of the rotor or stator to be adapted even more flexibly to the winding requirements. This increased freedom of movement makes it possible to precisely realize even complex winding patterns and to optimally position the winding wire. Furthermore, this flexibility leads to a reduction in inaccuracies during the winding process, ultimately contributing to improved quality of the final product. The orthogonal adjustment also allows for more precise wire distribution, which is particularly advantageous when processing rotors and stators with different dimensions.

[0057] According to a further preferred embodiment of the invention, the fixture can also be coupled to a third linear drive, wherein the third linear drive is in turn coupled to a fourth linear drive, so that the fixture can be displaced orthogonally to the rotor axis by the third and / or fourth linear drive. Coupling the fixture to a third and fourth linear drive, both of which enable orthogonal displacement, offers the advantage of further increased precision in positioning the rotor or stator. This additional freedom of movement allows for finer adjustment of the winding parameters and even more precise wire guidance. This not only improves the quality of the winding pattern but also increases process stability.Especially when machining workpieces with more complex geometries, the improved positioning accuracy can lead to higher efficiency and process reliability.

[0058] Furthermore, according to another advantageous embodiment of the invention, the holder can be pivotable relative to the rotor or stator axis. The ability to pivot the holder relative to the rotor or stator axis offers the advantage that the winding process can be even better adapted to the geometry of the respective workpiece. This additional pivoting movement allows the winding wire to be laid more evenly and precisely, particularly with workpieces that have asymmetrical or complex geometries. Moreover, the pivoting movement improves the flexibility of the device and enables optimized wire guidance, as described in P231589.

[0059] - 12 -

[0060] This further improves process quality. This is particularly advantageous when processing workpieces with different sizes and shapes.

[0061] According to a further particularly preferred embodiment of the invention, the rotor or stator can be rotatably arranged in the receptacle about its rotor axis. The rotatability of the rotor or stator about its own axis in the receptacle offers the advantage of uniform and continuous wire laying during the winding process. The rotational movement allows the winding wire to be applied to the rotor or stator at a constant speed and with uniform tension, thus reducing the risk of wire distortion and inconsistencies in the winding pattern. Furthermore, the rotatability enables improved control of the winding wire tension, which has a positive effect on the quality of the final product. This feature is particularly advantageous for complex winding geometries and when processing larger wire diameters.

[0062] Furthermore, the invention can also be further developed such that the device includes a control unit connected to the first and second linear drives and configured so that the first linear drive can be operated in the opposite direction to the second linear drive. The control unit connected to the linear drives, which allows for counter-rotation of the first and second linear drives, offers the advantage of more precise control of the winding movement. By operating the drives in opposite directions, movements can be better synchronized and adapted to the specific winding requirements. This results in more constant wire tension and greater precision in wire placement. Moreover, this control allows for increased production speed without compromising the quality of the winding pattern.The ability to coordinate the movements of the drives also contributes to reducing material wear and wire breaks.

[0063] In another preferred embodiment of the invention, it can also be provided that the drive axis of the first linear drive and the P231589

[0064] - 13 -

[0065] The drive axes of the second linear actuator run parallel to each other. The parallel drive axes of the first and second linear actuators offer the advantage of improved power transmission and more precise movement of the feed element. This allows for more accurate control of the winding wire's positioning, resulting in more uniform wire laying and higher winding quality. The parallel alignment of the drive axes also contributes to system stability, as it reduces mechanical stress on the drives. This increases the device's service life and reduces maintenance requirements, leading to greater overall system efficiency.

[0066] It can also be advantageous to further develop the invention such that the drive shaft of the second linear drive is connected to a receptacle to which the first linear drive is attached. Connecting the drive shaft of the second linear drive to a receptacle to which the first linear drive is attached offers the advantage that the feed element can be guided particularly stably and precisely. This arrangement improves the synchronization of the movements of the two drives and ensures that the winding wire is positioned more evenly and accurately. This leads to higher winding quality and reduces the risk of wire breaks or uneven winding patterns. Furthermore, the improved stability of the entire construction increases the efficiency of the winding process and enables faster production while maintaining consistently high quality.

[0067] According to a further preferred embodiment of the invention, the control unit can be connected to the third and fourth linear drives and configured such that the third linear drive can be operated in the opposite direction to the second linear drive. Connecting the control unit to the third and fourth linear drives in a way that allows the drives to operate in opposite directions offers the advantage of more precise control of the orthogonal movements of the fixture. This ability to control the drives in opposite directions significantly improves control over the positioning of the rotor or stator during the winding process. This increases the flexibility of the device and P231589

[0068] - 14 - process quality has been improved. In particular, when machining workpieces with different dimensions or complex geometries, this control system allows for more precise adjustment of the winding parameters, leading to higher production quality and efficiency.

[0069] The invention can also be advantageously implemented such that the drive axis of the third linear drive and the drive axis of the fourth linear drive run parallel to each other. The parallel drive axes of the third and fourth linear drives offer the advantage of improved stability and precision in positioning the fixture. The parallel alignment of the drive axes reduces mechanical stress and allows the movements of the linear drives to be executed more accurately and synchronously. This contributes to more uniform wire laying and higher winding quality. Furthermore, the improved stability of the device increases the service life of the drives and reduces maintenance requirements, further enhancing the device's cost-effectiveness.

[0070] Furthermore, it may be advantageous for the drive shaft of the fourth linear drive to be connected to a mount to which the third linear drive is attached. Connecting the drive shaft of the fourth linear drive to a mount to which the third linear drive is attached offers the advantage of more stable and precise guidance of the entire drive unit. This arrangement improves the synchronization of the linear drive movements and ensures more consistent positioning of the rotor or stator during the winding process. This results in higher winding quality and reduces the risk of inaccuracies or wire distortion. Moreover, the improved stability of the structure contributes to greater process reliability and production speed.

[0071] The object of the invention is further achieved by a method for winding a rotor or stator comprising the following steps:

[0072] Provision of a device for winding a rotor or stator comprising P231589

[0073] - 15 - a receptacle into which an unwound rotor with a rotor axis or an unwound stator with a stator axis can be inserted,

[0074] • wherein a winding wire for winding the rotor or stator can be passed through a feed element,

[0075] • wherein the feed element is designed to be linearly displaceable relative to the rotor or stator parallel to the rotor axis, and

[0076] • the feed element is coupled to a first linear drive, wherein the first linear drive is in turn coupled to a second linear drive, so that the feed element can be moved parallel to the rotor axis or stator axis by the first linear drive and / or second linear drive; and / or the feed element is coupled to a first linear drive and the rotor or stator mount is coupled to a second linear drive, so that the feed element can be moved parallel to the rotor axis or stator axis by the first linear drive and / or the mount can be moved parallel to the rotor axis or stator axis by the second linear drive.

[0077] • the first linear drive and the second linear drive are controlled, at least temporarily, in such a way that they perform an opposing linear movement.

[0078] The inventive method for winding a rotor or stator offers the advantage that the counter-rotating control of the two linear drives enables precise control of the winding movement and wire placement. The counter-rotating movement of the drives results in constant wire tension and uniform wire distribution on the workpiece. This leads to improved winding quality and reduces the risk of wire breakage or distortion. Furthermore, the method allows for higher production speeds because the movements of the linear drives can be optimally coordinated.

[0079] The object of the invention is also solved by a manufacturing cell comprising P231589

[0080] - 16 - A plurality of devices for winding a rotor or stator according to any one of claims 1-11, and a robot for loading the devices with unwound rotors and / or stators and for removing wound rotors and / or stators from the devices. The production cell, which comprises a plurality of devices for winding rotors or stators and a robot for loading and unloading, offers the advantage of significant automation of the winding process. The use of a robot optimizes the material flow, leading to a significant increase in production capacity and efficiency. At the same time, manual handling is minimized, reducing the risk of errors and increasing process reliability. Automation also allows production processes to be better scaled to customer demand, further increasing the flexibility and cost-effectiveness of the entire production cell.

[0081] For the purposes of this patent application, a manufacturing cell is a spatial production unit comprising several devices for winding rotors or stators and supplemented by additional components, such as a robot for loading and unloading. The manufacturing cell serves to carry out the winding process fully or largely automatically, whereby unwound rotors or stators are inserted into the devices and removed after winding without the need for manual intervention.

[0082] The function of the manufacturing cell is based on the coordinated interaction of the individual winding fixtures and the robot. The robot advantageously takes over the task of precisely inserting the unwound rotors or stators into the respective fixtures so that the winding process can begin. After completion of the winding process, the robot removes the finished rotors or stators and conveys them for further processing or storage. This automation achieves a significant increase in production speed and simultaneously increases process reliability, as errors that could occur with manual tasks are minimized. P231589

[0083] - 17 -

[0084] The production cell setup preferably includes a series of winding fixtures positioned in a structured arrangement around the robot. This arrangement can be customized depending on available space and production requirements. It is advantageous to position the winding fixtures so that the robot can efficiently reach all stations to ensure smooth loading and unloading. The robot is connected to a control unit that synchronizes both the robot's movements and the individual winding processes of the fixtures. This ensures optimal coordination between the various work steps and contributes to a trouble-free workflow.

[0085] Possible embodiments of the manufacturing cell can vary with regard to the number of winding fixtures and the robot's performance. One preferred embodiment includes multiple winding fixtures operated in parallel to increase production capacity. Another embodiment could involve a modular design of the manufacturing cell, allowing for the addition of further winding fixtures to adapt the system to growing production requirements. Furthermore, certain embodiments of the manufacturing cell can utilize robots with different loading capacities, for example, to handle larger rotors or stators.

[0086] The flexibility of the manufacturing cell allows it to be adapted to various production environments, and it can be advantageously scaled to meet specific customer needs. This makes the manufacturing cell a versatile solution suitable for both small batch and mass production.

[0087] The invention will now be explained in more detail with reference to figures, without limiting the general concept of the invention.

[0088] It shows: P231589

[0089] - 18 -

[0090] Figure 1 shows a device for winding a rotor or stator in a perspective view.

[0091] Figure 2 shows a device for winding a rotor or stator in a schematic sectional view.

[0092] Figure 3 shows a device for winding a rotor or stator in an operating position with a tilted rotor in a schematic sectional view.

[0093] Figure 4 shows a manufacturing cell in a schematic top view.

[0094] Figure 5 shows a device for winding a rotor or stator in an operating position with a tilted rotor in a schematic sectional view.

[0095] Figures 1-3 show a device 1 for winding a rotor 2 or stator, comprising a receptacle 3 into which an unwound rotor 2 with a rotor shaft 4 or an unwound stator with a stator shaft can be inserted. In the embodiment shown, a rotor 2 is used. It is understood that a stator can be wound in an analogous manner.

[0096] The winding wire 5 can be guided through a feed element 6 for winding the rotor 2, and the feed element 6 is designed to be linearly displaceable relative to the rotor 2 parallel to the rotor axis 4. This arrangement has the technical advantage that the feed element 6 enables precise wire guidance by positioning the wire at a constant distance from the rotor surface along the rotor axis 4. The linear displacement of the feed element ensures controlled wire routing, which is crucial for uniform winding. For this purpose, the feed element 6 is coupled to a first linear drive 7, which in turn is coupled to a second linear drive 8, so that the feed element 6 can be displaced parallel to the rotor axis 4 by the first linear drive 7 and / or the second linear drive 8. P231589

[0097] - 19 -

[0098] The parallel arrangement of the drive axes 12 and 13 of the two linear drives ensures that the displacement movement of the feed element is smooth and stable. This prevents uneven forces from acting on the winding wire 5, which contributes to improved winding quality. In the illustrated embodiment, the drive axis 13 of the second linear drive 8 is connected to a receptacle 14 to which the first linear drive 7 is attached. This modular arrangement of the linear drives offers the advantage that both the feed element and the drive unit are designed in a compact form, enabling space-saving integration into the overall device.

[0099] The holder 3 is designed to be linearly displaceable orthogonally to the rotor axis 4. This is achieved by coupling the holder 3 to a third linear drive 9, which in turn is coupled to a fourth linear drive 10, so that the holder 3 can be displaced orthogonally to the rotor axis 4 by the third linear drive 9 and / or the fourth linear drive 10. This orthogonal displaceability offers the technical advantage that the position of the rotor can be precisely adjusted in two axes. Particularly with workpieces of varying dimensions or complex geometries, this allows for flexible adjustment of the position to ensure uniform wire routing. Here, too, the drive axis 15 of the third linear drive 9 and the drive axis 16 of the fourth linear drive 10 run parallel to each other, resulting in increased stability of the entire drive unit.The drive shaft 16 of the fourth linear drive 10 is connected to a mount 17, to which the third linear drive 9 is attached. This stable arrangement of the linear drives prevents unwanted vibrations or inaccuracies during the winding process and thus contributes to process reliability and increases the service life of the device.

[0100] Figure 5 shows another embodiment of the device 1, in which the feed element 6 is coupled to a first linear drive 7 and the receptacle 3 of the rotor 2 or stator is coupled to a second linear drive 8, so that the feed element 6 is parallel to the rotor axis 4 or stator axis by the first linear drive 7 and / or the receptacle 3 is parallel to the rotor axis 4 or P231589

[0101] - 20 -

[0102] The stator axis can be moved from the second linear drive 8.

[0103] As shown in Figure 3, the receptacle 3 is pivotable relative to the rotor axis 4 or the stator axis. This pivotability allows the rotor or stator to be positioned at different angles, which is particularly advantageous for asymmetrical workpieces or when producing winding patterns that require specific wire guidance. Furthermore, the rotor 2 is rotatably mounted in the receptacle 3 about its rotor axis 4. This rotatability ensures that the winding wire can be distributed continuously and evenly over the entire rotor surface, minimizing the formation of winding defects such as gaps or overlaps.

[0104] The device 1 further comprises a control unit 11, which is connected to the first linear drive 7 and the second linear drive 8 and is configured such that the first linear drive 7 can be operated in the opposite direction to the second linear drive 8. This counter-rotating control of the linear drives allows the movements of the feed element to be precisely aligned with the requirements of the winding process. This enables optimization of the wire tension during winding, thereby maintaining constant tensile forces on the winding wire, which increases the wire's service life and improves the winding quality. The control unit 11 is also connected to the third linear drive 9 and the fourth linear drive 10 and is configured such that the third linear drive 9 can be operated in the opposite direction to the fourth linear drive 10.This allows for even more precise positioning of the fixture and ensures that the rotor or stator is always held in the optimal position during the winding process.

[0105] A method for winding a rotor 2 or stator can comprise the following steps: First, a device 1 for winding a rotor 2 or stator is provided, comprising a receptacle 3 into which an unwound rotor 2 with a rotor axis 4 or an unwound stator with a stator axis can be inserted, wherein a winding wire 5 for winding the rotor 2 or stator can be passed through a feed element 6, and the feed element 6 is designed to be linearly displaceable relative to the rotor 2 or stator parallel to the rotor axis 4. The linear displacement of the feed element and the P231589

[0106] - 21 -

[0107] Control of the wire tension by the linear drives enables a uniform distribution of the winding wire, independent of the rotor geometry. The feed element 6 is coupled to a first linear drive 7, which in turn is coupled to a second linear drive 8, so that the feed element 6 can be displaced parallel to the rotor axis 4 or stator axis by the first linear drive 7 and / or the second linear drive 8. The first linear drive 7 and the second linear drive 8 are controlled, at least temporarily, to perform an opposing linear movement, which enables precise control of the wire laying and increases the process speed.

[0108] Figure 4 shows a production cell 20 comprising a plurality of devices 1 for winding a rotor 2 or stator, as known from Figures 1-3, and a robot 21 for loading the devices 1 with unwound rotors 2 and / or stators and for removing wound rotors 2 and / or stators from the devices 1. The arrangement of the devices in a U-shaped structure within the production cell 20 has the advantage that the robot 21 has a short travel distance to each device, which increases the efficiency of loading and unloading. The precise control of the robot ensures that the rotors or stators are inserted into the winding devices safely and in an optimal position and removed after completion. In the embodiment shown, four identical devices 1 are arranged in a row.Three of these rows are positioned in a U-shape within manufacturing cell 20, with robot 21 centrally located in this arrangement. This configuration enables high production capacity while simultaneously optimizing material flow and minimizing space requirements.

[0109] The invention is not limited to the embodiments illustrated in the figures. The foregoing description is therefore not to be regarded as limiting, but as explanatory. The following claims are to be understood as meaning that a named feature is present in at least one embodiment of the invention. This does not preclude the presence of further features. Insofar as the claims and the foregoing description are 'first' and P231589

[0110] - 22 -

[0111] To define a 'second' characteristic, this term serves to distinguish between two similar characteristics without establishing a ranking.

[0112] P231589

[0113] - 23 -

[0114] List of reference signs

[0115] 1 Device

[0116] 2 Rotor

[0117] 3 recording

[0118] 4 Rotor axis

[0119] 5 winding wire

[0120] 6 Feed element

[0121] 7 Linear actuator

[0122] 8 Linear actuator

[0123] 9 Linear actuator

[0124] 10 Linear actuator

[0125] 11 Control unit

[0126] 12 drive axle

[0127] 13 Drive axle

[0128] 14th entry

[0129] 15 drive axle

[0130] 16 drive axle

[0131] 17th entry

[0132] 20 manufacturing cells

[0133] 21 robots

Claims

P231589 - 24 - Claims 1. Device (1) for winding a rotor (2) or stator comprising a receptacle (3) into which an unwound rotor (2) with a rotor axis (4) or an unwound stator with a stator axis can be inserted, wherein a winding wire (5) for winding the rotor (2) or stator can be passed through a feed element (6), and the feed element (6) is designed to be linearly displaceable relative to the rotor (2) or stator parallel to the rotor axis (4), characterized in that the feed element (6) is coupled to a first linear drive (7), wherein the first linear drive (7) is in turn coupled to a second linear drive (8),so that the feed element (6) can be displaced parallel to the rotor axis (4) or stator axis by the first linear drive (7) and / or the second linear drive (8) and / or the feed element (6) is coupled to a first linear drive (7) and the receptacle (3) of the rotor (2) or stator is coupled to a second linear drive (8), so that the feed element (6) can be displaced parallel to the rotor axis (4) or stator axis by the first linear drive (7) and / or the receptacle (3) can be displaced parallel to the rotor axis (4) or stator axis by the second linear drive (8).

2. Device (1 ) according to claim 1 , characterized in that the receptacle (3) is designed to be linearly displaceable orthogonally to the rotor axis (4).

3. Device (1) according to claim 1 or 2, characterized in that P231589 - 25 - the receptacle (3) is coupled to a third linear drive (9), wherein the third linear drive (9) is in turn coupled to a fourth linear drive (10), so that the receptacle (3) can be displaced orthogonally to the rotor axis (4) from the third linear drive (9) and / or fourth linear drive (10).

4. Device (1) according to one of the preceding claims, characterized in that the receptacle (3) is pivotable relative to the rotor axis (4) or the stator axis.

5. Device (1) according to one of the preceding claims, characterized in that the rotor (2) is rotatably arranged in the receptacle (3) about its rotor axis (4) or the stator is rotatably arranged in the receptacle (3) about its stator axis.

6. Device (1 ) according to one of the preceding claims, characterized in that the device (1 ) has a control unit (11 ) which is connected to the first linear drive (7) and the second linear drive (8) and is configured such that the first linear drive (7) can be operated in the opposite direction to the second linear drive (8).

7. Device (1 ) according to one of the preceding claims, characterized in that the drive axis (12) of the first linear drive (7) and the drive axis (13) of the second linear drive (8) run parallel to each other.

8. Device (1) according to claim 7, P231589 - 26 - characterized in that the drive axis (13) of the second linear drive (8) is connected to a receptacle (14) to which the first linear drive (7) is attached.

9. Device (1 ) according to one of the preceding claims 6-8, characterized in that the control unit (11 ) is connected to the third linear drive (9) and the fourth linear drive (10) and is configured such that the third linear drive (9) can be operated in the opposite direction to the fourth linear drive (10).

10. Device (1 ) according to one of the preceding claims 3-9, characterized in that the drive axis (15) of the third linear drive (9) and the drive axis (16) of the fourth linear drive (10) run parallel to each other.

11. Device (1) according to claim 10, characterized in that the drive axis (16) of the fourth linear drive (10) is connected to a receptacle (17) to which the third linear drive (9) is attached.

12. Method for winding a rotor (2) or stator comprising the following steps: • Provision of a device (1 ) for winding a rotor (2) or stator comprising a receptacle (3) into which an unwound rotor (2) with a rotor axis (4) or an unwound stator with a stator axis can be inserted, P231589 - 27 - wherein a winding wire (5) for winding the rotor (2) or stator can be passed through a feed element (6), • wherein the feed element (6) is designed to be linearly displaceable relative to the rotor (2) or stator parallel to the rotor axis (4), and • the feed element (6) is coupled to a first linear drive (7), wherein the first linear drive (7) is in turn coupled to a second linear drive (8), so that the feed element (6) can be displaced parallel to the rotor axis (4) or stator axis by the first linear drive (7) and / or second linear drive (8) and / or • the feed element (6) is coupled to a first linear drive (7) and the receptacle (3) of the rotor (2) or stator is coupled to a second linear drive (8), so that the feed element (6) can be moved parallel to the rotor axis (4) or stator axis by the first linear drive (7) and / or the receptacle (3) can be moved parallel to the rotor axis (4) or stator axis by the second linear drive (8). • the first linear drive (7) and the second linear drive (8) are controlled at least temporarily in such a way that they perform an opposing linear movement.

13. Manufacturing cell (20) comprising • a plurality of devices (1 ) for winding a rotor (2) or stator according to one of claims 1-11 , as well as • a robot (21 ) for loading the devices (1 ) with unwound rotors (2) and / or stators and for removing wound rotors (2) and / or stators from the devices (1 ).

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