Method for manufacturing a component made of fiber-reinforced plastic

Abstract

This invention relates to a method for manufacturing a component (1) made of fiber-reinforced plastic according to a three-dimensional winding method, wherein, by means of at least one computer-controlled winding device (10), a wire traction force (F) is applied. Zist At least one thread carrier (11) is wound with at least one thread or rope-like fibrous material (12) provided on at least one spool (18) in at least one winding pattern, wherein a thread traction force (F) preset by an adjusting device (14) is used. ZN The fiber material (12) is laid on the thread carrier (11), wherein, in order to take into account a specific laying position (29) on the thread carrier (11), the local geometry in the specific laying position affects the preset thread traction force (F). ZN The line will leave the predetermined laying track (28) through the winding pattern, and the traction force (F) will be adjusted according to the location and / or according to the track. Zist ).

Description

TECHNICAL FIELD

[0001] The invention relates to a method for producing a component composed of fiber-reinforced plastic according to the preamble of claim 1. The invention also relates to a computer-aided winding device according to the preamble of claim 10. BACKGROUND

[0002] A method and a winding device of the type mentioned at the outset are known from patent document DE 10 2016 012 594 A1. For producing a component composed of fiber-reinforced plastic according to a three-dimensional winding method, at least one fiber material in the form of a thread or a strand is wound in at least one winding pattern with the aid of a computer-aided winding device, which is provided on at least one spool. The fiber material is laid down on at least one line carrier with a constant line tension that is preset and maintained by means of a regulating device. The fiber material is laid down along a geodesic as a laying path, which is understood to mean the shortest connecting line of two points on a curved surface. Laying the fiber material along a geodesic as a laying path enables the fiber material to be laid down without the aid of adhesion effects, and the fiber material laid down along the geodesic does not slip.

[0003] It can be advantageous for specific regions of the component for the fiber material to be laid down deviating from the geodesic, in order to present a curved load path due to the geometric / structural given conditions of the component, to support a load transfer of a local multi-axial stress state, to realize a specific inflection point of the laying process with the fiber material or to avoid specific material accumulations in the laminate, which is built up as a result of the laying of the fiber material. SUMMARY

[0004] Based on the prior art described above, it is an object of the invention to carry out the laying of the fiber material deviating from the geodesic in complex geometric regions of the component, without the fiber material slipping from the laying path back onto the geodesic in these regions.

[0005] The object is achieved from the method-technical point of view from the preamble of claim 1 in combination with the features of the characterizing part of the claim. From the device-technical point of view, a solution to the object is derived from the preamble of claim 10 in combination with the features of the characterizing part of the claim. The advantageous further developments of the invention are described in the respective subordinate claims that follow thereafter.

[0006] According to the present invention, a method for manufacturing a component made of fiber-reinforced plastic according to a three-dimensional winding method is provided, wherein, by means of at least one computer-controlled winding device, a linear or rope-like fiber material provided on at least one spool is wound with at least one winding pattern using a wire traction force, wherein the fiber material is laid on the wire carrier with a wire traction force preset by an adjusting device. According to the present invention, to prevent the fiber material from slipping off the geodesic path laid on a predetermined laying track, the wire traction force is adjusted according to the location and / or the track, taking into account specific laying locations on the wire carrier where the local geometry may deviate from the predetermined laying track by the winding pattern under the preset wire traction force. The wire tension is adapted according to the location and / or the track to maintain the predetermined, geodesic-offset laying track of the fiber material at the specific laying location on the wire carrier. The method enables the fiber material to be laid off the geodesic path at the specific laying location on the wire carrier, so as to present a load path of bending due to given geometric / structural conditions of the component to be manufactured. Furthermore, load transfer under localized multiaxial stress states in the finished component can be supported. Additionally, specific material agglomeration points in the lamination can be avoided. In particular, high preset linear traction forces can be achieved to ensure thorough compaction of the lamination, i.e., the winding layer formed by the fiber material on the linear carrier. For this purpose, preset linear traction forces are applied only to specific areas of the layup.

[0007] Therefore, the pre-set traction force can be increased to a predetermined maximum traction force before reaching such a specific laying location, and immediately reduced to a predetermined minimum traction force after passing the specific laying location, and then the traction force can be increased again to the pre-set traction force. The pre-set traction force is preferably between 30N and 120N. The predetermined maximum or minimum traction force deviating from this can exceed or fall below the pre-set traction force, with the exceeding or falling value ranging from 10N to 30N.

[0008] Specifically, the laying distance for laying the fiber material with minimum traction can be determined based on the adhesion characteristics of the fiber material. This ensures that the adhesion of the fiber material at the surface of the carrier is sufficient, or more precisely, the adhesion at the location on the fiber material below it, to raise the traction force to a preset traction force without slipping onto the geodesic line.

[0009] Here, the length of the laying path is selected so that the damping fiber material is aligned with the geodesic in the area of ​​the specific laying location.

[0010] The corresponding change in linear traction force can preferably follow a ramp-like progression. This has the advantage that the change from the preset linear traction force to the predetermined maximum traction force follows a positive ramp-like progression, such as a starting ramp. Correspondingly, the predetermined maximum traction force decreases to the predetermined minimum traction force via a negative ramp-like progression, such as a braking ramp, or similarly increases from the predetermined minimum traction force to the preset linear traction force via a starting ramp. The positive or negative ramp-like progression of the linear traction force change prevents overload, which could damage the fiber material to be laid or cause unintentional detachment of already laid fiber material.

[0011] On the other hand, the preset traction force can vary depending on the different winding patterns formed during the winding process. Accordingly, the preset maximum traction force can be varied into a preset minimum traction force.

[0012] In particular, the geometric features of the yarn carrier and / or the geometric features formed on the yarn carrier during the winding process can be considered as specific layup locations, which are caused or generated by directional switching within the winding pattern and / or by deflection due to the geometry of the yarn carrier and / or by overlapping areas of multiple winding directions when laying the fiber material.

[0013] Furthermore, the preset wire traction force can be adjusted based on the local layup angle and / or the lamination thickness achieved during the winding process. This allows for consideration, for example, scenarios where, as the lamination thickness increases, the preset wire traction force must be reduced to prevent necking.

[0014] Preferably, TowPreg (fiber impregnated material) can be used as the fiber material. TowPreg is a pre-impregnated filament or rope-like semi-finished product made of fiber-reinforced thermosetting plastic. Since the thermosetting plastic is in a gel-like state when TowPreg is at least partially hardened, the fiber material has high adhesive properties.

[0015] The objective stated at the beginning is also achieved by a computer-controlled winding device having the features of the characteristic portion of claim 10, as described in the preamble of claim 10.

[0016] According to claim 10, a computer-controlled winding apparatus is provided for manufacturing components made of fiber-reinforced plastics according to a three-dimensional winding method, wherein the computer-controlled winding apparatus is used to wind a wire carrier with a linear or rope-like fiber material provided on at least one spool in at least one predeterminable winding pattern by means of a wire traction force, wherein the winding apparatus lays the fiber material on the wire carrier with a wire traction force preset by an adjusting device, wherein, in order to take into account a specific laying location on the wire carrier, in which the local geometry deviates from the laying track predetermined by the winding pattern under the preset wire traction force, the winding apparatus adjusts the wire traction force according to the location and / or according to the track. For advantages, see the advantages of the method according to the invention.

[0017] In this case, the adjusting device may have a storage unit for storing winding patterns and a computing unit for controlling the winding device. This enables the display of one or more winding patterns for manufacturing components.

[0018] In particular, the adjusting device can determine a specific laying position based on the geometry of the yarn carrier to be wound and at least one winding pattern used, so as to adapt the yarn traction force according to the position.

[0019] Preferably, the adjusting device can increase the preset line traction force to a predetermined maximum traction force before reaching such a specific laying location, and immediately reduce it to a predetermined minimum traction force after passing through the specific laying location and the laying distance, so as to then increase the line traction force to the preset line traction force again.

[0020] To adjust the wire traction force, at least one device can be provided for setting and maintaining the corresponding wire traction force. This device can be controlled by an adjustment mechanism. The adjustment mechanism may have an input-output unit, which enables the preset wire traction force. Furthermore, the winding pattern and the preset minimum and maximum traction forces can be selected via the input-output unit.

[0021] Therefore, the at least one device may include at least one electronically regulated drive motor that drives the spools. The drive motor may preferably be designed as a synchronous motor. Synchronous motors are preferably suitable for applications requiring a stable rotational speed independent of the load, such as when maintaining line traction. Furthermore, synchronous motors enable the compact and efficient design of devices for maintaining line traction, which is reflected in the total weight of the at least one device. Each spool may be driven individually by an electronically regulated synchronous motor.

[0022] Furthermore, the at least one device may have at least one sensing unit for continuously detecting line traction force. The at least one sensing unit preferably operates in a non-contact manner to minimize the impact on the line traction force being detected.

[0023] Specifically, the component can be designed as a multi-point guide rod for the chassis of motor vehicles or commercial vehicles. Attached Figure Description

[0024] This invention is not limited to the combinations of features given in the independent claim or its dependent claims. Furthermore, features may be combined with each other, even if these features appear in the claims, the following description of preferred embodiments of the invention, or directly in the drawings. The reference to the drawings by the use of reference numerals in the claims is not intended to limit the scope of the claims.

[0025] The accompanying drawings illustrate advantageous embodiments of the invention as explained below. Wherein:

[0026] Figures la to le A schematic diagram of a fiber-reinforced member constructed as a multi-point guide rod is shown;

[0027] Figure 2 A schematic top view of a component constructed as a four-point guide rod is shown.

[0028] Figure 3 An apparatus for manufacturing fiber-reinforced members according to a three-dimensional winding method is schematically shown;

[0029] Figure 4 A partial view schematically shows one edge of a line carrier forming a specific laying position.

[0030] Figure 5 It schematically shows the following based on Figure 4 The linear carrier and the fiber material laid on it along the linear laying path; and

[0031] Figure 6 An example is shown according to Figure 5 A graph showing the variation of the traction force along the laying distance of the line. Detailed Implementation

[0032] Figures la to le A schematic diagram of a fiber-reinforced member 1 constructed as a multi-point guide rod is shown. Therefore, Figure la A component 1, implemented as a two-point guide rod, is shown in the chassis of a passenger vehicle or commercial vehicle. Component 1 includes a body 2 having at least two load-introduction areas 4 connected to each other by a connecting structure 3. The connecting structure 3 of the body 2 can be designed, in particular, as a hollow profile. The body 2 essentially determines the basic shape of component 1. Figure lb and Figure lc Two variants of component 1, designed as a three-point guide rod, are illustrated by way of example. Figure Id and Figure leComponent 1, designed as a four-point or five-point guide rod, is illustrated exemplarily. Component 1, designed as a multi-point guide rod, can connect kinematic points in the chassis and / or wheel suspension and can transmit motion and / or force. In this case, the connection between the multi-point guide rod and other components of the chassis can be achieved via hinges arranged in the load-introducing region 4. Due to the symmetry of the configuration of component 1 and the arrangement of the load-introducing region 4, these components have a clear, substantially constant load flow, which is confined to a few dominant load directions. Manufacturing such component 1 as a fiber-reinforced component using a three-dimensional winding method enables the production of functional components with minimal mass while possessing high strength and stiffness values.

[0033] according to Figure 2 A component 1 for a vehicle wheel suspension implemented as a four-point guide rod includes a body 2, at least one linear fiber material 12, and four sleeves 6. The basic shape of the body is predetermined by a core element, more precisely a linear carrier 11, and the sleeves are arranged in a load-introduction area 4 that can be formed accordingly. The linear fiber material 12 laid on the linear carrier 11 is shown exemplary and in a very simplified manner. In particular, the linear fiber material 12 essentially forms the entire surface of the component 1 designed as a four-point guide rod. The body 2 consists of a torsion element 5 and four support arms 7 integrally connected to the torsion element 5. At the respective distal ends of the respective support arms 7 are corresponding sleeves 6 for receiving corresponding support elements, not shown here, particularly molecular joints. The four-point guide rod 1 is used, for example, as a chassis connector in a saddle-type tractor and in this case serves as both a triangular guide rod and a stabilizer. Therefore, the four-point guide rod 1 is responsible for the lateral guidance of the axle and primarily for the longitudinal guidance of the axle. Furthermore, sway stability is also provided by the four-point guide rod 1.

[0034] Because the linear fiber material 12 is at least partially wound around the wire carrier 11 and the corresponding sleeve 6, the corresponding sleeve 6 and the linear fiber material 12 are at least force-transmittingly connected to each other.

[0035] The wire carrier 11 does not guide loads and is only used for molding the linear or rope-like fibrous material 12. The fibrous material 12 consists of a large number of continuous fibers and is pre-impregnated with resin. In contrast, the wire carrier 11 is formed of foam material. Furthermore, the corresponding sleeve 6 is formed of metal. The wire carrier 11, the fibrous material 12, and the sleeve 6 have a quasi-integral structural form with inherent joints.

[0036] Specifically, a single fiber material 12 can be wound multiple times around the wire carrier 11 and the corresponding sleeve 6. The fiber material 12 is guided substantially parallel to the corresponding longitudinal axis 8 of the corresponding support arm 7 on the corresponding support arm 7 to absorb bending stress. Furthermore, the fiber material 12 is guided on the torsion element 5 at an angle of approximately 40° to approximately 60°, preferably 45°, relative to the longitudinal axis 9 of the four-point guide rod 1 to absorb torsional stress from torsion.

[0037] The following describes an embodiment of a computer-controlled winding apparatus 10 for manufacturing such a fiber-reinforced member 1 according to a three-dimensional winding method, and a method for manufacturing a member 1 made of fiber-reinforced plastic according to a three-dimensional winding method, wherein at least one wire carrier 11 is wound with at least one winding pattern using at least one computer-controlled winding apparatus 10 using a linear or rope-like fiber material 12 provided on at least one spool 18, said fiber material being a TowPreg (fiber impregnated body) semi-finished product. Depending on the embodiment of the member 1 to be manufactured, various winding patterns can be used when winding the wire carrier 11. Each winding pattern affects at least one mechanical property of the structural element 1. The mechanical properties of the structural element 1 can be purposefully, i.e., precisely, determined by the sequence, repetition, mixing, and / or material selection of the various winding patterns.

[0038] Figure 3 A winding apparatus 10 for manufacturing a fiber-reinforced member 1 made of fiber-reinforced plastic according to a three-dimensional winding method is schematically shown. The computer-aided winding apparatus 10 is used to wind at least one wire carrier 11 with linear fiber material 12 provided on at least one spool 18. The wire carrier 11 forms the core element of the member 1, which substantially predefines the principle outline of the member 1 to be manufactured in the three-dimensional winding method, but does not perform a supporting function. Figure 3 The schematic diagram shows the wire carrier 11, on which joint elements have been arranged in the load introduction area 4. The fiber material 12 is laid in one winding pattern or multiple different winding patterns, wherein each winding pattern is assigned to a specific purpose in order to affect one or more mechanical properties of the component 1.

[0039] The winding device 10 is hereby and preferably designed as at least one robotic arm 13 having six rotating axes. An adjustment device 14 is provided for controlling the at least one robotic arm 13, which communicates wirelessly or wiredly with the robotic arm 13 via signal lines or a bus system 15. A wire carrier 11 is arranged on the driven rotating axis 16 of the rotary table 17, and at least one fiber rope 12 is wound on the wire carrier 11 in at least one winding pattern preset by the adjustment device 14. The drive of the rotating axis 16 can also be controlled by the adjustment device 14 via the bus system 15. The rotating axis 16 of the rotary table 17 forms the seventh rotating axis of the device 10. A substantially linear fiber material 12 is provided on at least one spool 18. The spool 18 is arranged on the head of the fiber-forming guide 25 of the robotic arm 13 and carried by the fiber guide. The spool 18 can also be arranged spatially spaced from the robotic arm 13.

[0040] The device 10 also includes a preset line traction force F. ZN At least one device 19. For inputting or selecting a preset line traction force F ZN An input-output unit 26 is provided to communicate with the adjustment device 14. Furthermore, various winding patterns can be selected and / or set via the input-output unit, and the minimum traction force F can be preset. Zmin and maximum traction force F Zmax .

[0041] The corresponding device 19 includes a drive motor 20, specifically designed as an electronically regulated synchronous motor, a computing unit 21, and a device for detecting the actual line traction force F. Zist At least one sensing unit 22. A spool 18 is non-rotatably arranged on a shaft 23 driven by a drive motor 20. A thread-like or rope-like fibrous material 12 pulled from the spool 18 is guided through a guide element 24 arranged on a fiber guide device 25, having a substantially circular outlet cross-section, and is laid on a wire carrier 11 by the fiber guide device 25, or more precisely, wound around the wire carrier.

[0042] In order to monitor the line traction force F Zist At least one sensing unit 22 can be arranged between the unwinding point on the spindle 18 and the laying point on the wire carrier 11 along the free path of at least one fiber material 12.

[0043] The computing unit 21 is used to evaluate the signal of at least one sensing unit 22 and based on the detected line traction force F. Zist The computing unit 21 controls at least one drive motor 20. The computing unit 21 controls at least one synchronous motor 20 to maintain a preset linear traction force F. ZNThis is necessary to prevent the fiber material 12 to be laid on the thread carrier 11 from being stretched or shortened due to the movement of the robotic arm 13. For this purpose, the adjustment device 14 of the robotic arm 13 can be connected to the computing unit 21 via a bus system 15 to transmit the motion curve of the robotic arm 13 with its six rotation axes to the computing unit 21, thereby presenting the set winding configuration. This can improve the preset thread traction force F maintained by the operation of the synchronous motor 20. ZN The precision is high. The spool 18, driven by the synchronous motor 20, can be driven so that the fiber material 12 can be alternately unwound and rewound by changing the direction of rotation. The adjustment device 14 can also additionally perform the tasks of the calculation unit 21, thereby eliminating the need for the calculation unit 21.

[0044] Figure 4 The illustration shows a schematic partial view of the edge 30 of the thread carrier 11, which forms a specific layup portion 29. It may be advantageous for a specific area of ​​the component 1 to lay the fiber material 12 off-geometry on the layup track 28, thus presenting a load path that is curved due to the geometric / structural given conditions of the corresponding specific layup portion 29 of the component 1, in order to support load transfer under local multiaxial stress states, to achieve specific inflection points in the layup process with the fiber material 12, or to avoid specific material agglomeration points in the laminated fabric that are layered due to the layup of rope-like or thread-like fiber material 12. The specific layup portion 29 on the thread carrier 11, as shown here, forms, for example, a curved edge 30 on the outer contour of the thread carrier 11. Another specific layup portion 29 may be a sleeve 6 to be wound in the load introduction region 4 of the component 1. Figure 2 As shown, the lateral necking portion on the torsion element 5 forms another specific laying portion 29.

[0045] At edge 30, the fiber material 12 can deflect, for example, by 90°. At this specific placement location 29 on the line carrier 11, due to local geometry, the deflecting edge 30 may affect the predetermined traction force F. ZN The fiber material 12 leaves the predetermined laying track 28 via a winding pattern, wherein it may slip back or detach onto the geodesic track 27. The reference numeral S represents the laying path, i.e., the path along the laying track 28. The laying path S also indicates the winding direction or laying direction of the fiber material 12.

[0046] The geometric features of the wire carrier 11 and / or the geometric features formed on the wire carrier 11 during the winding process can be considered as a specific layup area 29, which is caused or generated by the directional switching within the winding pattern and / or by the deflection due to the geometry of the wire carrier 11 and / or by the overlapping area of ​​multiple winding directions when laying the fiber material 12.

[0047] According to the present invention, in order to prevent the fiber material 12, which is laid off from the geodesic line 27 and onto the predetermined laying track 28, from slipping, it is specified that, taking into account a specific laying portion 29 on the line carrier 11, in which the local geometry results in a predetermined line traction force F, ZN The next step involves leaving the pre-defined laying track 28 via a winding pattern, adjusting the line traction F according to the location and / or the track. Zist The line traction force F is adapted according to the location and / or the track. Zist In order to maintain the predetermined laying track 28 of the fiber material 12 off the geodesic line 27 at a specific laying position 29 on the online carrier 11, that is, to prevent it from slipping onto the geodesic line 27.

[0048] Figure 5 It schematically shows the following based on Figure 4 The linear carrier 11 and the fiber material 12 laid on it along the online laying path S. Figure 6 An example is shown according to Figure 5 The line traction force F Zist A graph showing the changes in the online paving distance S. (Reference) Figure 5 and Figure 6 The illustration exemplarily explains, with regard to the deflection around the edge 30 which is a specific paving location 29, the adjustment of the line traction force F according to the location and / or according to the track. Zist .

[0049] First, with a preset traction force F... ZN Fiber material 12 is laid out, and the preset traction force is maintained by the combined action of the adjusting device 14 and the calculation unit 21. When the point S1 before the edge 30 is reached, the traction force is reduced from the preset traction force F. ZN Increase to value F Zmax . Line traction force F Zist The rise here follows a generally sloping process. The position of point S1 before the specific laying position 29, or the distance from point S1 to the specific laying position 29, depends on the adjustment speed of the adjustment device 14, at which the line traction force F can be adjusted by the device 19. Zist From F ZN Rise to F Zmax This will not overload the fiber material 12. At point S2, the linear traction force F Zist To achieve the predetermined maximum line traction force F Zmax The value. Looking along the laying direction of fiber material 12, point S2 represents the direct starting point 31 of a specific laying location 29, which is the edge 30. The maximum line traction force F is maintained for the line laying path S between point S2 and the subsequent point S3. ZmaxLooking along the laying direction of the fiber material 12, point S3 marks the end 32 of a specific laying position 29, which is the edge 30.

[0050] Between points S3 and S4, the traction force F of the line Zist Reduce the line traction force F to a minimum Zmin . Line traction force F Zist The reduction here also follows a basically sloping process. Linear traction force F Zist The sloping process with reduced speed has a higher traction force F than the linear traction force. Zist The slope was greater when it rose earlier.

[0051] Between points S4 and S5, the 12 fibers exert a minimum linear traction force F. Zmin Lay it along a predetermined laying path 33. Specifically, the fiber material 12 is laid with minimal traction F. Zmin The laying distance can be determined based on the adhesion characteristics of the fiber material 12. This ensures that the adhesion of the fiber material 12 to the surface of the line carrier 11 is sufficient, more precisely, the adhesion of the fiber material 12, and the layer beneath it, is sufficient to maintain the traction force F of the line without the fiber material 12 slipping onto the geodesic line 27. Zist Increase to the preset line traction force F ZN Therefore, the length of the laying path 33 is selected so that the barrier fiber material 12 is aligned with the geodesic line 27 in the area of ​​the specific laying position 29.

[0052] At the end of the laying path 33 determined by point S5, the line traction force F Zist Increase to the preset line traction force F ZN . Line traction force F Zist The ascent here also follows a sloping process until the preset linear traction force F is reached at point S6. ZN .

[0053] The adjusting device 14 has a storage unit 34 and a calculation unit 35. The winding pattern can be stored in the storage unit, and the calculation unit is used to control the winding device 10. The adjusting device 14 can determine a specific laying position 29 based on the geometry of the yarn carrier 11 to be wound and at least one winding pattern to be used, so as to adapt the yarn traction force F according to the position and / or according to the track. Zist .

[0054] Multiple ramp-shaped processes can be stored in the storage unit 34 in a particularly editable manner. This allows for adaptation to different fiber materials 12 to be used and / or preset line traction forces F. ZN .

[0055] The adjusting device 14 can be configured to adjust the thread traction force F based on the local layup angle and / or the lamination thickness achieved during the winding process (i.e., the layer thickness of the already laid fiber material 12). Zist In addition, the preset line traction force F ZN The adjustment can be made based on the local layup angle and / or the lamination thickness achieved during the winding process. For example, consider the following scenario: as the lamination thickness increases, the preset wire traction force F must be reduced. ZN To avoid neck constriction.

[0056] List of reference signs

[0057] 1 component

[0058] 2 body

[0059] 3. Connection Structure

[0060] 4 Load introduction area

[0061] 5 Torsion element

[0062] 6 sleeves

[0063] 7 Support Arm

[0064] 8. Longitudinal axis

[0065] 9. Longitudinal axis

[0066] 10 Winding device

[0067] 11-line carrier

[0068] 12 Fiber Materials

[0069] 13. Robotic Arm

[0070] 14 Control device

[0071] 15 Bus System

[0072] 16 Rotating shaft

[0073] 17 Rotary table

[0074] 18 spools

[0075] 19 Winding device

[0076] 20 Synchronous Motors

[0077] 21 Computing Units

[0078] 22 sensing units

[0079] 23 Axles

[0080] 24 Guiding elements

[0081] 25 Guiding Device

[0082] 26 Input-Output Units

[0083] 27 Geodesic lines

[0084] 28. Laying tracks

[0085] 29 Specific laying locations

[0086] 30 11 edge

[0087] The beginning of 31 29

[0088] The end of 32 29

[0089] 33. Paving route

[0090] 34 storage units

[0091] 35 computing units

[0092] F Zist traction force

[0093] F ZN Preset line traction force

[0094] F Zmax Maximum line traction

[0095] F Zmin Minimum line traction

[0096] S-line paving distance

[0097] Points along the route from S1 to S6.

Claims

1. A method for manufacturing a component (1) made of fiber-reinforced plastic according to a three-dimensional winding method, wherein, With the aid of at least one computer-controlled winding device (10), the wire traction force (F) Zist At least one thread carrier (11) is wound with at least one thread or rope-like fibrous material (12) provided on at least one spool (18) in at least one winding pattern, wherein a thread traction force (F) preset by an adjusting device (14) is used. ZN The fiber material (12) is laid on the thread carrier (11), characterized in that, in order to take into account a specific laying position (29) on the thread carrier (11), the local geometry in the specific laying position is affected by the preset thread traction force (F). ZN The line will then leave the predetermined laying track (28) through the winding pattern, and the line traction force (F) will be adjusted according to the location and / or according to the track. Zist ).

2. The method according to claim 1, characterized in that, Before reaching such a specific laying position (29), the preset line traction force (F) is applied. ZN ) rise to the predetermined maximum traction force (F) Zmax And immediately after passing the specific laying section (29), in order to travel the laying distance (33), the preset line traction force (F) is applied. ZN Reduce to a predetermined minimum traction force (F) Zmin ), and then the line traction force (F) Zist The force is then increased again to the preset line traction force (F). ZN ).

3. The method according to claim 2, characterized in that, The minimum traction force (F) is determined based on the adhesion characteristics of the fiber material (12). Zmin The laying distance (33) of the fiber material (12) being laid.

4. The method according to claim 2 or 3, characterized in that, The length of the laying path (33) is selected such that the geodesic (27) in the area where the fiber material (12) is blocked is aligned with the geodesic line (27) in the specific laying position (29).

5. The method according to any one of claims 1 to 3, characterized in that, The line traction force (F) Zist The corresponding changes follow the direction of the slope.

6. The method according to any one of claims 1 to 3, characterized in that, The preset line traction force (F) ZN It varies depending on the different winding patterns formed during the winding process.

7. The method according to any one of claims 1 to 3, characterized in that, The geometric features of the wire carrier (11) and / or the geometric features formed on the wire carrier (11) during the winding process are taken into consideration as a specific lay-up area (29), which is caused or generated by the direction switching within the winding pattern and / or by the deflection of the geometry of the wire carrier (11) and / or by the overlapping area of ​​multiple winding directions when laying the fiber material (12).

8. The method according to any one of claims 1 to 3, characterized in that, The wire traction force (F) is adjusted according to the local layup angle and / or the lamination thickness achieved during the winding process. Zist ).

9. The method according to any one of claims 1 to 3, characterized in that, TowPreg was used as the fiber material (12).

10. A computer-controlled winding apparatus (10) for manufacturing a component (1) made of fiber-reinforced plastic according to a three-dimensional winding method, wherein, The computer-controlled winding device (10) is used to apply line traction force (F) Zist The winding device (10) winds the thread carrier (11) with a linear or rope-like fibrous material (12) provided on at least one spool (18) in at least one predetermined winding pattern, wherein the winding device (10) uses a thread traction force (F) preset by the adjusting device (14). ZN The fiber material (12) is laid on the thread carrier (11), characterized in that, in order to take into account a specific laying position (29) on the thread carrier (11), a preset thread traction force (F) is applied in the specific laying position due to the local geometry. ZN The winding device (10) will then leave the predetermined laying track (28) of the winding pattern, and the winding device (10) will adjust the thread traction force (F) according to the location and / or according to the track. Zist ).

11. The computer-controlled winding device (10) according to claim 10, characterized in that, The adjustment device (14) has a storage unit (34) and a calculation unit (35). The storage unit can store winding patterns, and the calculation unit is used to control the winding device (10).

12. The computer-controlled winding device (10) according to claim 10 or 11, characterized in that, The adjusting device (14) determines the specific laying position (29) based on the geometry of the yarn carrier (11) to be wound and at least one winding pattern used, so as to adapt the yarn traction force (F) according to the position. ZN ).

13. The computer-controlled winding device (10) according to claim 10 or 11, characterized in that, The adjusting device (14) is configured to apply the preset line traction force (F) before reaching the specific laying position (29). ZN Increase to the predetermined maximum traction force (F) Zmax And immediately after passing the specific laying section (29), in order to travel the laying distance (33), the preset line traction force is reduced to a predetermined minimum traction force (F). Zmin ), so that the line traction force (F) can then be applied again. Zist The force is increased to the preset line traction force (F). ZN ).

14. The computer-controlled winding device (10) according to claim 10 or 11, characterized in that, It is equipped with a line traction force (F) for setting and maintaining the corresponding setting. ZN F Zmax F Zmin At least one device (19).

15. The computer-controlled winding device (10) according to claim 14, characterized in that, The at least one device (19) includes at least one electronically regulated drive motor (20) that drives the at least one spool (18).

16. The computer-controlled winding device (10) according to claim 14, characterized in that, The at least one device (19) has the capability to continuously detect the line traction force (F). Zist At least one sensing unit (22) of ).

17. The computer-controlled winding device (10) according to claim 10 or 11, characterized in that, The component (1) is a multi-point guide rod for the chassis of a motor vehicle or commercial vehicle.

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