A continuous fiber laser additive manufacturing-oriented revolution path planning method

Abstract

The application belongs to the technical field of additive manufacturing, and discloses a rotary body path planning method for continuous fiber laser additive manufacturing. The outer surface of the rotary body is divided into a head rotary zone, a spiral printing zone and a tail rotary zone along the axial direction; a plurality of first periodic printing paths are generated based on geodesic curvature constraints, stay arc discrete constraints and path partition constraints; the plurality of first periodic paths are spliced to form a second periodic path, and the length of the stay arc is adjusted based on path closure and full coverage constraints; the second periodic path is arrayed circumferentially and connected at the head and tail to form a closed full-period path. The application suppresses fiber folding and twisting in the rotary zone through geodesic curvature constraints, avoids fiber accumulation at the pole hole through stay arc discrete constraints, and ensures accurate path closure and global coverage through closure and full coverage constraints, thereby solving the problem of poor forming precision of the existing rotary body path planning method.

Description

Technical Field

[0001] This application belongs to the field of additive manufacturing technology, and more specifically, relates to a method for planning the path of a rotating body for continuous fiber laser additive manufacturing. Background Technology

[0002] Continuous carbon fiber reinforced thermoplastic resin composites, with their excellent properties such as high specific strength, high specific modulus, lightweight, and corrosion resistance, are widely used in rotating components such as hydrogen storage pressure vessels, high-speed motor sheaths, and radar radomes. The current mainstream molding process is wet winding, which uses fiber tension and fiber-mandrel interface slip coefficient as core constraints and performs path planning based on semi-geodesic equations. However, this method struggles to achieve precise design of the size and position of the rotational zone, and the root-cutting and laying of fibers at the pole holes can easily lead to localized over-accumulation, resulting in uneven component thickness and large dispersion in mechanical properties.

[0003] Continuous fiber laser additive manufacturing uses continuous carbon fiber thermoplastic prepreg filaments / ribbons as raw materials. A laser heats the resin matrix in real time, softening it, and then uses pressure rollers to compact and bond it to the mandrel surface. The resulting integral component is formed through in-situ curing and layer-by-layer deposition. This process eliminates the need to consider fiber tension and interface slip coefficient constraints, allowing for greater freedom in path design. However, existing path planning methods directly borrow from wet winding or general 3D printing approaches. This leads to difficulties in precisely controlling the size of the rotation zone and the location of the electrode hole cut during continuous fiber laser additive manufacturing. Excessive fiber accumulation at the electrode hole cut location can cause filament wrinkles and twists, as well as insufficient path closure and full coverage, ultimately resulting in poor forming accuracy. Therefore, a rotational path planning method specifically adapted to laser additive manufacturing is urgently needed to achieve precise and controllable forming of the rotation zone, suppress fiber accumulation in the electrode holes, and ensure complete path closure and coverage. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a rotational path planning method for continuous fiber laser additive manufacturing, which aims to solve the technical problem that the existing rotational path planning method is prone to poor forming accuracy.

[0005] The first aspect of this application relates to a method for path planning of a rotating body in continuous fiber laser additive manufacturing, comprising: Based on the structural characteristics of the rotating body, the outer surface of the rotating body is divided along the axial direction into a head rotating area, a spiral printing area, and a tail rotating area; Multiple first-cycle printing paths are generated based on geodesic curvature constraints, and the axial positions of the dwell arcs in each first-cycle printing path are different. The first-cycle printing path is composed of a first spiral printing segment, a tail-turning printing segment, a second spiral printing segment, and a head-turning printing segment connected end to end in sequence. The first and second spiral printing segments extend spirally within the spiral printing area. The tail-turning printing segment and the head-turning printing segment, both within the tail-turning area and the head-turning printing area, first smoothly transition from spiral extension to circumferential extension, and then smoothly transition from circumferential extension to spiral extension. The dwell arc is the path segment of the circumferential extension. Based on path closure and full coverage constraints, the length of each dwelling arc in the first cycle printing path is adjusted; the multiple first cycle printing paths are spliced ​​together so that each adjacent first cycle printing path is connected end to end to form a second cycle printing path. The second periodic printing path is copied multiple times along the circumferential array of the rotating body and connected end to end to form a closed full-cycle printing path, which completely covers the outer surface of the rotating body.

[0006] Preferably, based on geodesic curvature constraints, multiple first-cycle printing paths are generated, specifically: the geodesic curvature of any point on the first-cycle printing path does not exceed the upper limit of the geodesic curvature allowed by the prepreg to meet the forming quality requirements.

[0007] Preferably, the geodesic curvature at any point on the first periodic printing path Specifically:

[0008] in, For axial coordinates, It is the change in axial coordinate. It is the helix angle. It is the change in helix angle. It is a spiral angle function. It is a radial radius function. It is the derivative of the radial radius function.

[0009] Preferably, the transition from spiral extension to circumferential extension is as follows: the spiral angle of the spiral extension gradually transitions from a preset value to 90°, completing the transition from spiral extension to circumferential extension. The transition from smooth circumferential extension to spiral extension is specifically achieved by gradually changing the spiral angle of the circumferential extension from 90° to the preset value, thus completing the transition from smooth circumferential extension to spiral extension.

[0010] Preferably, the helix angle is defined as the acute angle between the tangent direction of the printing path and the tangent direction of the meridian of the rotating body, and the helix angle function is... Specifically, this manifests as follows:

[0011] in, For axial coordinates, It is a radial radius function. It is the change in radial radius. It is a rotation angle function. It is the change in rotation angle, that is, the angle of rotation about the axis. It is the change in axial coordinate.

[0012] Preferably, the axial positions of the dwell arcs in each of the first cycle printing paths are different. Specifically, within the tail rotary printing segment and the head rotary printing segment, the axial coordinates of each dwell arc are discretely distributed at equal or unequal intervals.

[0013] Preferably, within the tail-end rotary printing section and the head-end rotary printing section, the axial position of each dwelling arc increases or decreases periodically along the axial direction of the rotary area.

[0014] Preferably, the path closure and full coverage constraints are specifically as follows:

[0015] in, For the first The path rotation angle of the trailing arc of the final printing segment in the first cycle of the printing path. For the first The path rotation angle of the head rotation printing segment's dwell arc in the first cycle of the printing path. For the first The path rotation angle of the first turning section and the first spiral printing section at the tail of the first cycle printing path. No. The path rotation angle of the second turning section and the second spiral printing section at the tail of the first cycle printing path. It is the first The path rotation angle of the first turning section of the head rotation printing segment in the first cycle of the printing path. It is the first The path rotation angle of the second turning section of the head rotation printing segment in the first cycle of the printing path. It is the number of first-cycle print paths contained in the full-cycle print path.

[0016] Secondly, this application provides a continuous fiber composite rotating body component, manufactured using the method described in the first aspect.

[0017] Thirdly, this application provides an electronic device, comprising: at least one memory for storing a program; and at least one processor for executing the program stored in the memory, wherein when the program stored in the memory is executed, the processor is configured to execute the method described in the first aspect or any possible implementation thereof.

[0018] Overall, the technical solutions conceived in this application have the following beneficial effects compared with the prior art: (1) When generating the first cycle printing path, this application forces that the absolute value of the geodesic curvature at any point on the path does not exceed the upper limit allowed by the prepreg under the requirements of wrinkle-free and twist-free forming. This allows the helix angle in the turning section of the turning zone to transition from the preset value to 90° in a smooth and controlled manner and then recover symmetrically. This avoids fiber instability and deformation caused by excessive bending in the path plane from the root, and realizes precise and controllable forming of the rotating body.

[0019] (2) This application generates multiple first-cycle printing paths with different axial positions of the dwell arcs within the same printing cycle, so that the fibers that were originally concentrated at a single axial position at the end of the turning zone are laid out in a staggered manner along the axial direction, effectively dispersing the local deposition thickness, eliminating the risk of fiber bridging and printing roller interference, and significantly improving the uniformity of component thickness and process stability.

[0020] (3) Based on the path rotation angle closed equation system, this application constrains the total rotation angle of each first cycle printing path to be consistent, and the rotation angle of the first and last stop arcs in each path to be equal. After splicing to form the second cycle path, it is copied along the circumferential array and connected end to end to ensure that the final full cycle printing path completely covers the outer surface of the rotating body without gaps or excessive overlap, thus meeting the geometric dimensional accuracy and mechanical performance requirements of high-end rotating body components. Attached Figure Description

[0021] Figure 1 This is a flowchart of a rotational path planning method for continuous fiber laser additive manufacturing provided in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram showing the head rotation area, spiral printing area, and tail rotation area distributed axially on the outer surface of the rotating body according to an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the four printing segments in the first cycle printing path provided in the embodiments of this application.

[0024] Figure 4 This is a schematic diagram showing that the axial positions of the dwell arcs in the multiple first-cycle printing paths provided in this application embodiment are configured to be different from each other.

[0025] Figure 5This is a comparison diagram of the actual printing effects of two strategies provided in the embodiments of this application: fixed position of the dwell arc and discrete dwell arc.

[0026] Figure 6 This is a schematic diagram of the path planning results for a pressure vessel-type rotating body provided in an embodiment of this application.

[0027] Figure 7 This is a schematic diagram of the path planning results for a conical aircraft shell-type rotating body provided in an embodiment of this application.

[0028] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0029] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: A1 is the head rotation area; A2 is the spiral printing area; A3 is the tail rotation area; 1 is the first spiral printing segment; 2 is the tail rotation printing segment; 3 is the second spiral printing segment; 4 is the head rotation printing segment; 5 is the first path; 6 is the second path; 7 is the third path; 8 is the first path planning result; 9 is the second path planning result; 10 is the third path planning result; 11 is the fourth path planning result. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. In this application, the symbol " / " indicates that the related objects are in an "or" relationship, for example, A / B means A or B.

[0032] In this application, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order of objects. For example, "first response message" and "second response message," etc., are used to distinguish different response messages, not to describe a specific order of response messages.

[0033] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0034] In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more, for example, multiple processing units means two or more processing units, multiple elements means two or more elements, etc.

[0035] This application addresses the need for laser additive manufacturing of continuous fiber composite rotary components. It employs a laser heating / roll pressing reinforcement additive manufacturing process, where a six-axis industrial robot pulls a laser printhead to lay fibers on the surface of a rotary mandrel, depositing the target component layer by layer. During the printing process, the resin matrix in the continuous fiber prepreg is heated to a semi-molten state by laser heating, and then flattened and compacted by a pressure roller to form a dense fiber layup.

[0036] like Figure 1 As shown, the rotational path planning method for continuous fiber laser additive manufacturing provided in this embodiment includes the following steps: Step S1: Based on the structural characteristics of the rotating body, the outer surface of the rotating body is divided along the axial direction into the head rotating area A1, the spiral printing area A2, and the tail rotating area A3.

[0037] The surface equation of the solid of revolution is preferably expressed as a parametric equation with the y-axis (the central axis of the solid of revolution) as the axis of revolution:

[0038] in, For axial coordinates, The rotation angle about the axis of rotation, This is a radial radius function. For transpose; Figure 2 The diagram illustrates the axial distribution of the head rotation area A1, the spiral printing area A2, and the tail rotation area A3 on the outer surface of the rotating body. The upper region represents a pressure vessel-like component, while the lower region represents a conical shell-like component. The three regions are arranged sequentially along the rotation axis, with the spiral printing area A2 in the middle, and the head rotation area A1 and tail rotation area A3 at either end. This partitioning provides a spatial framework for subsequent differentiated path planning.

[0039] Step S2: Based on geodesic curvature constraints, generate multiple first-cycle printing paths, and the axial positions of the dwell arcs in each first-cycle printing path are different.

[0040] First, the structure of the printing path in the first cycle will be explained. For example... Figure 3 As shown, the first cycle printing path is composed of the first spiral printing segment 1, the tail rotating printing segment 2, the second spiral printing segment 3, and the head rotating printing segment 4 connected end to end in sequence, forming a cycle of spiraling forward-turning back-spiraling forward-turning back along the outer surface of the rotating body.

[0041] The first spiral printing segment 1 and the second spiral printing segment 3 are printed within the spiral printing area A2 at a preset spiral angle. Extend in a spiral, helix angle Defined as the acute angle between the tangent direction of the printing path and the tangent direction of the meridian of the rotating body. Tail-end rotating printing segment 2 is located within tail-end rotating area A3, and head-end rotating printing segment 4 is located within head-end rotating area A1. Both rotating printing segments perform a path reversal function: first smoothly transitioning from a spiral extension to a circumferential extension (spiral angle...). (Gradually transitioning from the preset value to 90°), then after a period of circumferential extension, smoothly transitioning back to helical extension (helix angle) (Gradually recovering to the preset value from 90°). The circumferentially extending path segment is the stopping arc, located between the two smooth turning segments.

[0042] The range of preset helix angle values ​​is: The preset value in this implementation is .

[0043] To avoid forming defects such as fiber wrinkles and twisting during the turning process in the turning zone, this step uses geodesic curvature constraints for path planning, requiring the geodesic curvature of any point on the path to be printed in the first cycle. The geodesic curvature shall not exceed the upper limit of the allowable value for prepreg under the requirements of wrinkle-free and twist-free forming. Geodesic curvature of fiber paths on the surface of a body of revolution Calculated according to the Liouville formula, by controlling the rate of change of the helix angle To ensure that the geodesic curvature always meets the constraint conditions during the turning process, the geodesic curvature at any point on the fiber printing path is specifically:

[0044] in, For axial coordinates, It is the change in axial coordinate. It is the helix angle. It is the change in helix angle. It is a spiral angle function. It is a radial radius function. It is the derivative of the radial radius function.

[0045] The geodesic curvature constraint can be expressed as:

[0046] The helix angle is defined as the acute angle between the tangent direction of the printing path and the tangent direction of the meridian of the rotating body. The helix angle function is... Specifically, this manifests as follows:

[0047] in, For axial coordinates, It is a radial radius function. It is the change in radial radius. It is a rotation angle function. It is the change in rotation angle, that is, the angle of rotation about the axis. It is the change in axial coordinate.

[0048] The generated multiple first-cycle printing paths share an important characteristic: the axial positions of the dwell arcs in each first-cycle printing path are different. Specifically, within the tail-end and head-end rotary printing segments, the axial coordinates of each dwell arc are discretely distributed at equal or unequal intervals within the axial range of the rotary zone, and the axial position of each dwell arc can increase or decrease cycle by cycle along the axial direction of the rotary zone.

[0049] Step S3: Based on path closure and full coverage constraints, adjust the length of each dwell arc and splice multiple first-cycle printing paths to form the second-cycle printing path.

[0050] like Figure 4 As shown, three first-cycle printing paths (path 5, path 6, and path 7) were generated, each with different axial positions of its dwell arcs, exhibiting a discrete, staggered distribution along the axial direction within the rotation zone. Based on path closure and full coverage constraints, the lengths of each dwell arc segment were adjusted using the path rotation angle closure equations, ensuring that each first-cycle printing path has the same total path rotation angle, and that the path rotation angles of the tail and head dwell arcs in each first-cycle printing path are equal. Then, path 5, path 6, and path 7 were sequentially spliced ​​end-to-end to form a second-cycle printing path with discretely distributed dwell arcs. This second-cycle printing path serves as the minimum repeating unit for subsequent circumferential array replication.

[0051] The specific constraints for path closure and full coverage are:

[0052] in, For the first The path rotation angle of the trailing arc of the final printing segment in the first cycle of the printing path. For the first The path rotation angle of the head rotation printing segment's dwell arc in the first cycle of the printing path. For the first The path rotation angle of the first turning section and the first spiral printing section at the tail of the first cycle printing path. No. The path rotation angle of the second turning section and the second spiral printing section at the tail of the first cycle printing path. It is the first The path rotation angle of the first turning section of the head rotation printing segment in the first cycle of the printing path. It is the first The path rotation angle of the second turning section of the head rotation printing segment in the first cycle of the printing path. It is the number of first-cycle print paths contained in the full-cycle print path.

[0053] Figure 5 The actual printing effects of two strategies—fixed dwell arc position and discrete dwell arc—were compared. The left image shows the path planning with a fixed dwell arc position, where fibers overlap significantly at the edge of the turning zone, resulting in obvious fiber over-stacking and fiber gaps. The right image shows the path planning using the discrete dwell arc strategy, where fibers are evenly distributed and of uniform thickness in the turning zone, and defects such as fiber over-stacking and fiber gaps are significantly improved.

[0054] Step S4: Copy the second cycle printing path multiple times along the circumferential array of the rotating body and connect adjacent ends to form a closed full cycle printing path.

[0055] The second-cycle printing path generated in step S3 is used as a basic copying unit and copied multiple times along the circumferential array of the rotating body, so that the beginning and end of adjacent second-cycle printing paths are connected, and finally a closed full-cycle printing path is formed, which completely covers the outer surface of the rotating body.

[0056] Finally, based on the full-cycle printing path, a six-axis industrial robot pulls the laser print head to print layer by layer on the surface of the rotating core mold until the fiber layup reaches the preset thickness. After demolding, an integrated fiber composite rotating component is obtained.

[0057] The following description is based on specific embodiments.

[0058] Example 1 This embodiment focuses on path planning for rotating components such as hydrogen storage pressure vessels. Based on the above implementation method, surface reconstruction, printing area division, path planning, and full-cycle path generation are performed, with the preferred helix angle of the printing area being 35°.

[0059] Figure 6 The results of the first path planning with the fixed position of the stopping arc are shown in Figure 8. Figure 6 The second path planning results of the middle left figure and the dwell arc discrete strategy (9) Figure 6(Right image). Both path planning results can achieve precise design of the turning zone distance under geodesic curvature constraints. The fiber bundles at the edge of the turning zone can be precisely root-cut with the polar holes, effectively enhancing the mechanical properties of the end cap. Among them, the path planning with fixed dwell arc positions has a large amount of path overlap at the edge of the turning zone, which easily leads to excessive fiber accumulation and fiber bridging; while the path planning with discrete dwell arcs can significantly optimize the fiber bundle distribution, prevent excessive accumulation, and obtain a fiber layup with uniform thickness.

[0060] Example 2 This embodiment focuses on path planning for conical aircraft shell-type rotating components. Based on the above implementation method, surface reconstruction, printing area division, path planning, and full-cycle path generation are performed, with the preferred helix angle for the printing area being 9.5°.

[0061] Figure 7 The results of the third path planning with a fixed stopping arc position are shown in section 10. Figure 7 The fourth path planning result of the middle left figure and the dwell arc discrete strategy 11 ( Figure 7 (Right image). Both path planning results can achieve precise design of the turning zone distance under geodesic curvature constraints. The circumferentially distributed fiber bundles at the edge of the turning zone can effectively enhance the mechanical properties of the assembly positions at both ends. In addition, the path planning with fixed dwell arc positions results in a large overlap of paths at the edge of the turning zone, which can easily lead to excessive fiber accumulation and fiber bridging; while the path planning with discrete dwell arcs can significantly optimize the fiber bundle distribution, prevent excessive accumulation, and obtain fiber layup with uniform thickness.

[0062] In summary, this application has the following advantages compared with the prior art: This application breaks away from the traditional wet winding process's path planning mode, which relies on fiber tension and slip coefficient constraints and solves semi-geodetic equations. It offers greater freedom in path design and allows for precise control of the distance between the spiral printing zone and the rotation zone. Path planning based on geodesic curvature constraints effectively suppresses forming defects such as fiber wrinkles and twists, improving the forming quality of fiber layup. At the same time, it adopts a dwell arc discrete anti-accumulation strategy to optimize the fiber accumulation distribution at the end of the rotation zone, avoiding excessive local fiber deposition, eliminating the risks of fiber bridging and roller interference, and significantly improving the stability of the laser additive manufacturing process as well as the forming accuracy and thickness uniformity of the components.

[0063] Based on the methods in the above embodiments, this application provides an electronic device, such as... Figure 8As shown, the electronic device may include a processor, a communications interface, a memory, and a communication bus, wherein the processor, communications interface, and memory communicate with each other via the communication bus. The processor can invoke logical instructions stored in the memory to execute the methods described in the above embodiments.

[0064] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0065] Based on the methods in the above embodiments, this application provides a computer-readable storage medium storing a computer program that, when run on a processor, causes the processor to execute the methods in the above embodiments.

[0066] Based on the methods in the above embodiments, this application provides a computer program product that, when run on a processor, causes the processor to execute the methods in the above embodiments.

[0067] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0068] The method steps in this application embodiment can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can reside in an ASIC.

[0069] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0070] It is understood that the various numerical designations used in the embodiments of this application are merely for the convenience of description and are not intended to limit the scope of the embodiments of this application.

[0071] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for planning the path of a rotating body in continuous fiber laser additive manufacturing, characterized in that, include: Based on the structural characteristics of the rotating body, the outer surface of the rotating body is divided along the axial direction into a head rotating area, a spiral printing area, and a tail rotating area; Multiple first-cycle printing paths are generated based on geodesic curvature constraints, and the axial positions of the dwell arcs in each first-cycle printing path are different. The first-cycle printing path is composed of a first spiral printing segment, a tail-turning printing segment, a second spiral printing segment, and a head-turning printing segment connected end to end in sequence. The first and second spiral printing segments extend spirally within the spiral printing area. The tail-turning printing segment and the head-turning printing segment, both within the tail-turning area and the head-turning printing area, first smoothly transition from spiral extension to circumferential extension, and then smoothly transition from circumferential extension to spiral extension. The dwell arc is the path segment of the circumferential extension. Based on path closure and full coverage constraints, the length of each dwell arc in the first cycle printing path is adjusted; The multiple first-cycle printing paths are spliced ​​together so that each adjacent first-cycle printing path is connected end to end to form a second-cycle printing path. The second periodic printing path is copied multiple times along the circumferential array of the rotating body and connected end to end to form a closed full-cycle printing path, which completely covers the outer surface of the rotating body.

2. The method for planning the path of a rotating body according to claim 1, characterized in that, Based on geodesic curvature constraints, multiple first-cycle printing paths are generated. Specifically, the geodesic curvature at any point on the first-cycle printing path does not exceed the upper limit of the geodesic curvature allowed by the prepreg to meet the forming quality requirements.

3. The method for planning the path of a rotating body according to claim 2, characterized in that, The geodesic curvature of any point on the first cycle printing path Specifically: in, For axial coordinates, It is the change in axial coordinate. It is the helix angle. It is the change in helix angle. It is a spiral angle function. It is a radial radius function. It is the derivative of the radial radius function.

4. The method for planning the path of a rotating body according to claim 1, characterized in that, The transition from spiral extension to circumferential extension is as follows: the spiral angle of the spiral extension gradually transitions from a preset value to 90°, completing the transition from spiral extension to circumferential extension. The transition from smooth circumferential extension to spiral extension is specifically achieved by gradually changing the spiral angle of the circumferential extension from 90° to the preset value, thus completing the transition from smooth circumferential extension to spiral extension.

5. The method for planning the path of a rotating body according to claim 3 or 4, characterized in that, The helix angle is defined as the acute angle between the tangent direction of the printing path and the tangent direction of the meridian of the rotating body. The helix angle function is... Specifically, this manifests as follows: in, For axial coordinates, It is a radial radius function. It is the change in radial radius. It is a rotation angle function. It is the change in rotation angle, that is, the angle of rotation about the axis. It is the change in axial coordinate.

6. The method for planning the path of a rotating body according to claim 1, characterized in that, The axial positions of the stopping arcs in each of the first cycle printing paths are different. Specifically, within the tail rotary printing segment and the head rotary printing segment, the axial coordinates of each stopping arc are discretely distributed at equal or unequal intervals.

7. The method for planning the path of a rotating body according to claim 6, characterized in that, Within the tail-end and head-end rotary printing sections, the axial position of each dwelling arc increases or decreases periodically along the axial direction of the rotary zone.

8. The method for planning the path of a rotating body according to claim 1, characterized in that, The path closure and full coverage constraints are specifically as follows: in, For the first The path rotation angle of the trailing arc of the final printing segment in the first cycle of the printing path. For the first The path rotation angle of the head rotation printing segment's dwell arc in the first cycle of the printing path. For the first The path rotation angle of the first turning section and the first spiral printing section at the tail of the first cycle printing path. No. The path rotation angle of the second turning section and the second spiral printing section at the tail of the first cycle printing path. It is the first The path rotation angle of the first turning section of the head rotation printing segment in the first cycle of the printing path. It is the first The path rotation angle of the second turning section of the head rotation printing segment in the first cycle of the printing path. It is the number of first-cycle print paths contained in the full-cycle print path.

9. A continuous fiber composite material rotating component, characterized in that, It is manufactured using the method described in any one of claims 1 to 8.

10. An electronic device, characterized in that, Includes memory and one or more processors; The memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code including computer instructions; The one or more processors invoke the computer instructions to cause the electronic device to perform the method as described in any one of claims 1-8.

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