Vehicle frame production method and apparatus based on 3D printing, storage medium, and device

Abstract

The present application relates to the technical field of 3D printing manufacturing, and discloses a vehicle frame production method and apparatus based on 3D printing, a storage medium, and a device. The method comprises: obtaining a middle piece of a vehicle frame produced on the basis of 3D printing, wherein node installation positions for a plurality of nodes are reserved on the periphery of the middle piece, and the nodes comprise at least one of cylindrical nodes, climbing nodes and end nodes; installing nodes produced by machining onto corresponding node installation positions; obtaining a mixed fiber bundle formed by a basalt fiber bundle, a resin and a curing agent; and winding the nodes on the middle piece by means of the mixed fiber bundle, and curing the mixed fiber bundle to obtain a final vehicle frame. By means of the present application, vehicle frames having a light weight and high structural strength can be formed; moreover, multiple vehicle frames can be printed in batches at one time by means of 3D printing technology, thereby improving the production efficiency of vehicle frames.

Description

Frame generation method, device, storage medium and equipment based on 3D printing Technical Field

[0001] The present application relates to the field of 3D printing manufacturing technology, and in particular to a method, device, storage medium and equipment for generating a vehicle frame based on 3D printing. Background Art

[0002] Currently, 3D printing technology has a wide range of uses and strong flexibility, but it is rarely used in the automotive industry. The main reasons are the following two: first, the cost of mass production of 3D printing technology is high and the cycle is long; second, due to material reasons, the strength is insufficient or there is no obvious advantage compared with traditional metal frames.

[0003] Summary of the Invention

[0004] This application provides a 3D printing-based frame generation method, device, storage medium, and equipment to solve the problem that 3D printing technology cannot be used to print vehicle frames. The technical solution is as follows:

[0005] According to a first aspect of the present application, a method for generating a vehicle frame based on 3D printing is provided, the method comprising:

[0006] Obtaining a middle part of a vehicle frame generated based on 3D printing, wherein a plurality of node installation positions are reserved on the periphery of the middle part, wherein the nodes include at least one of a cylindrical node, a climbing node, and an end node;

[0007] Install each node generated by machining to the corresponding node installation position;

[0008] obtaining a mixed fiber bundle formed by a basalt fiber bundle, a resin, and a curing agent;

[0009] The mixed fiber bundle is used to wind each node on the intermediate member, and the final vehicle frame is obtained after the mixed fiber bundle is solidified.

[0010] In a possible implementation, the node is provided with multiple layers of grooves on its surface in the z-axis direction, and the depth of the grooves is half the diameter of the hybrid fiber bundle. Then, winding each node on the intermediate piece with the hybrid fiber bundle includes:

[0011] In the z-axis direction, the hybrid fiber bundle is rotated around the same layer of grooves of each node in sequence by a robot, so that the hybrid fiber bundle is sunk into the multi-section grooves of the node.

[0012] In a possible implementation, the method further includes:

[0013] determining a planar structure in the middleware;

[0014] Analyzing the stress conditions of the planar structure;

[0015] Determine the number of cylindrical nodes to be installed and the position and diameter of each cylindrical node according to the stress conditions;

[0016] The node installation positions are reserved on the planar structure based on the number of the cylindrical nodes and the position and diameter of each cylindrical node.

[0017] In a possible implementation, the method further includes:

[0018] When the planar shape of the planar structure is irregular, the node installation position is reserved at the inflection point of the planar structure.

[0019] In a possible implementation, the method further includes:

[0020] determining a ramp structure in the middle piece;

[0021] Determining the number of climbing nodes required to be installed on the slope structure and the position of each climbing node;

[0022] The node installation positions are reserved on the slope structure based on the number of the climbing nodes and the position of each climbing node.

[0023] In a possible implementation, the method further includes:

[0024] determining an arc structure in the middleware;

[0025] Determining the number of end nodes required to be installed on the arc-shaped structure and the position of each end node;

[0026] The node installation positions are reserved on the arc structure based on the number of the end nodes and the position of each end node.

[0027] In a possible implementation, the method further includes:

[0028] A profiling and positioning tool is provided between the two end nodes, wherein the profiling and positioning tool is used to position the mixed fiber bundle between the two end nodes into an arc shape;

[0029] After the mixed fiber bundle is solidified, the profiling and positioning tool is removed.

[0030] In one aspect, a 3D printing-based vehicle frame generation device is provided, the device comprising:

[0031] An acquisition module is configured to acquire a middle piece of a vehicle frame generated based on 3D printing, wherein the periphery of the middle piece is reserved with node installation positions for a plurality of nodes, wherein the nodes include at least one of a cylindrical node, a climbing node, and an end node;

[0032] An installation module is used to install each node generated by machining to the corresponding node installation position;

[0033] A generation module for obtaining a mixed fiber bundle formed by basalt fiber bundles, resin and curing agent;

[0034] The printing module is used to use the mixed fiber bundle to wind each node on the intermediate piece, and obtain the final vehicle frame after the mixed fiber bundle is cured.

[0035] According to a third aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the above-mentioned 3D printing-based vehicle frame generation method.

[0036] According to a fourth aspect of the present application, a vehicle frame production device is provided, which includes a 3D printing-based frame generation device.

[0037] The beneficial effects of the technical solution provided by this application include at least:

[0038] By mixing basalt fiber bundles with resin and a curing agent to create hybrid fiber bundles, and then combining the hybrid fiber bundle winding process with 3D printing, the hybrid fiber bundles are completely distributed around each node. Once the hybrid fiber bundles are cured, a lightweight yet structurally strong frame is formed. Furthermore, 3D printing technology allows for the batch printing of multiple frames at once, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] FIG1 is a flow chart of a method for generating a vehicle frame based on 3D printing provided in one embodiment of the present application;

[0041] FIG2 is a schematic diagram of a frame provided by one embodiment of the present application;

[0042] FIG3 is a schematic diagram of the upper surface of a frame provided in one embodiment of the present application;

[0043] FIG4 is a schematic diagram of a hybrid fiber bundle winding node provided by one embodiment of the present application;

[0044] FIG5 is a flowchart of a method for generating a vehicle frame based on 3D printing provided in one embodiment of the present application;

[0045] FIG6 is a schematic diagram of a vehicle frame and a coordinate system provided in one embodiment of the present application;

[0046] FIG7 is a schematic diagram of an arc structure provided by an embodiment of the present application;

[0047] FIG8 is a structural block diagram of a vehicle frame generation device based on 3D printing provided in one embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0049] As shown in Figure 1, it shows a flow chart of a method for generating a vehicle frame based on 3D printing provided by an embodiment of the present application. The method for generating a vehicle frame based on 3D printing can be applied to vehicle frame production equipment. The method for generating a vehicle frame based on 3D printing can include:

[0050] Step 101: Obtain a middleware of a vehicle frame generated based on 3D printing. The periphery of the middleware is reserved with node installation positions for multiple nodes, and the nodes include at least one of cylindrical nodes, climbing nodes, and end nodes.

[0051] In this embodiment, a vehicle frame structure can be designed based on vehicle requirements, with multiple node mounting locations reserved on the periphery (external surface) of the middleware. The frame structure can then be printed using 3D printing technology to produce the middleware. The structure of the middleware varies between vehicles, and this embodiment does not limit the structure of the middleware.

[0052] Depending on the structure of the middleware, multiple nodes of different types can be installed on its outer surface, such as at least one of a cylindrical node, a climbing node, and an end node. The cylindrical node is installed on a flat structure, the climbing node is installed on a sloped structure, and the end node is installed on an arc structure.

[0053] Step 102: Install each node generated by machining to the corresponding node installation position.

[0054] In this embodiment, multiple nodes may be generated by machining, and each node may be installed at a corresponding node installation position.

[0055] Figure 2 shows a schematic diagram of a vehicle frame. The 3D-printed intermediate component includes a frame profile plate 001, a frame reinforcement link 002, and a frame fixing grip 003. Climbing nodes 004 and cylindrical nodes are mounted on the upper and lower surfaces of the intermediate component. Figure 2 shows three types of cylindrical nodes of varying diameters and heights: a long cylindrical node 005, a short cylindrical node 006, and a large cylindrical node 007. For easier viewing, Figure 3 shows an enlarged view of the upper surface of the frame.

[0056] Step 103: Obtain a mixed fiber bundle formed by basalt fiber bundle, resin and curing agent.

[0057] Specifically, a mixture of resin and curing agent may be obtained, and then the basalt fiber bundles may be fully soaked in the mixture to obtain a mixed fiber bundle.

[0058] Step 104 , using the mixed fiber bundle to wind each node on the intermediate component, and obtaining the final vehicle frame after the mixed fiber bundle is cured.

[0059] When winding the nodes, the first layer of each node can be wound first, then the second layer of each node, and so on, until the highest layer of each node is wound. Then, after the mixed fiber bundle is solidified, the final frame product is obtained.

[0060] As shown in FIG4 , multiple layers of hybrid fiber bundles 008 are wound around the short cylindrical node 006 , the large cylindrical node 007 and the climbing node 005 on the left side of the frame, and three layers of hybrid fiber bundles 008 are wound around the long cylindrical node 005 in the middle of the frame.

[0061] In summary, the 3D printing-based vehicle frame production method provided in the embodiments of this application combines a basalt fiber bundle with a resin and a curing agent to produce a hybrid fiber bundle. This hybrid fiber bundle winding process is then combined with 3D printing to completely coat the perimeter of each node with the hybrid fiber bundle. Once the hybrid fiber bundle is cured, a lightweight yet structurally strong vehicle frame is formed. Furthermore, 3D printing technology allows for the batch printing of multiple frames at once, improving frame production efficiency.

[0062] As shown in Figure 5, it shows a flow chart of a vehicle frame generation method based on 3D printing provided by an embodiment of the present application. The vehicle frame generation method based on 3D printing can be applied to vehicle frame production equipment. The vehicle frame generation method based on 3D printing can include:

[0063] Step 501: Obtain a middleware of a vehicle frame generated based on 3D printing. The periphery of the middleware is reserved with node installation positions for multiple nodes, and the nodes include at least one of cylindrical nodes, climbing nodes, and end nodes.

[0064] In this embodiment, a vehicle frame structure can be designed based on vehicle requirements, with multiple node mounting locations reserved on the periphery (external surface) of the middleware. The frame structure can then be printed using 3D printing technology to produce the middleware. The structure of the middleware varies between vehicles, and this embodiment does not limit the structure of the middleware.

[0065] Depending on the structure of the middleware, multiple nodes of different types can be installed on its outer surface, such as at least one of a cylindrical node, a climbing node, and an end node. The cylindrical node is installed on a flat structure, the climbing node is installed on a sloped structure, and the end node is installed on an arc structure.

[0066] The following describes how to reserve three types of node installation locations.

[0067] (1) Cylindrical node

[0068] Specifically, determine the planar structure in the middleware; analyze the stress conditions of the planar structure; determine the number of cylindrical nodes to be installed and the position and diameter of each cylindrical node based on the stress conditions; and reserve node installation positions on the planar structure based on the number of cylindrical nodes and the position and diameter of each cylindrical node.

[0069] When the planar structure has an irregular shape, node installation positions are reserved at the inflection points of the planar structure. When the planar structure has a regular shape, the node installation positions are evenly distributed on the planar structure.

[0070] When reserving node installation positions, the spacing between any two nodes must be greater than 40mm and less than 200mm. The minimum spacing of 40mm ensures that the nodes do not interfere with the print head during printing, allowing the print head to complete the preset path around the nodes. The maximum spacing of 200mm ensures that the internal space is not too large, avoiding uneven stress on individual hybrid fiber bundles and affecting overall strength. In this embodiment, ensuring that the nodes are as uniform as possible also ensures relatively uniform internal stress when the structure is subjected to stress.

[0071] In this embodiment, the height of the cylindrical node, i.e., the height in the z-direction in Figure 6, can be determined based on the stress conditions of the planar structure. For example, when the stress is high, more layers of mixed fiber bundles are required, which means tall cylindrical nodes are needed; when the stress is low, fewer layers of mixed fiber bundles are required, which means shorter cylindrical nodes are needed.

[0072] The diameter of a cylindrical node is typically 20mm, but this can be adjusted based on actual needs. For example, the diameter of the large cylindrical node 007 in Figure 2 is typically 40mm. The interior of the large cylindrical node 007 is hollow, allowing the installation shaft to pass through during installation. This installation method avoids stress concentration associated with screw tightening, transferring all forces to the interior of the structure to ensure uniform stress distribution. Therefore, large cylindrical nodes 007 are generally used at end surfaces or locations where high stress is required.

[0073] (2) Climbing node

[0074] Specifically, determine the slope structure in the middleware; determine the number of climbing nodes required to be installed on the slope structure and the position of each climbing node; and reserve node installation positions on the slope structure based on the number of climbing nodes and the position of each climbing node.

[0075] As shown in Figure 2, the middle member's beam has inclined surfaces at both ends. Due to structural reasons, two planes with different heights coexist. If these planes were to be constructed incrementally along the XY plane, the connection between the two planes would inevitably be disconnected or the connected hybrid fiber bundles would be weakened. Therefore, as shown in Figure 2, we have designed a climbing node 004. The inclination angle of the bottom surface of climbing node 004 is consistent with that of the inclined surface, allowing it to fit perfectly onto the inclined surface. In this embodiment, climbing node 001 can be fixed to the bottom frame profile plate 001 by welding. This allows the composite material to fit perfectly onto the frame profile plate 001 through the node, helping to improve the strength of the transition point.

[0076] The number and position of the climbing nodes are determined in the same way as the direction of the cylindrical nodes, and will not be described again here.

[0077] (3) End node

[0078] Specifically, the arc structure in the middleware is determined; the number of end nodes required to be installed on the arc structure and the position of each end node are determined; and node installation positions are reserved on the arc structure based on the number of end nodes and the position of each end node.

[0079] The cylindrical nodes and climbing nodes mentioned above are all connected by hybrid fiber bundles to form a three-dimensional structure. However, it is not easy to achieve for arc-shaped structures with a certain arc. For arc-shaped structures, an end node needs to be set near the tangent of each end of the arc.

[0080] Optionally, a profiling and positioning tool can be provided between the two end nodes, and the profiling and positioning tool is used to position the mixed fiber bundle between the two end nodes into an arc shape. The profiling and positioning tool 010 is detachable.

[0081] As shown in FIG7 , two end nodes 009 are provided on the arc structure, and a contour positioning tool 010 is provided between the two end nodes 009 , and the curvature of the contour positioning tool 010 is similar to or the same as that of the arc structure.

[0082] Step 502: Install each node generated by machining to the corresponding node installation position.

[0083] In this embodiment, multiple nodes may be generated by machining, and each node may be installed at a corresponding node installation position.

[0084] Figure 2 shows a schematic diagram of a vehicle frame. The 3D-printed intermediate component includes a frame profile plate 001, a frame reinforcement link 002, and a frame fixing grip 003. Climbing nodes 004 and cylindrical nodes are mounted on the upper and lower surfaces of the intermediate component. Figure 2 shows three types of cylindrical nodes of varying diameters and heights: a long cylindrical node 005, a short cylindrical node 006, and a large cylindrical node 007. For easier viewing, Figure 3 shows an enlarged view of the upper surface of the frame.

[0085] Step 503: Obtain a mixed fiber bundle formed by basalt fiber bundles, resin, and curing agent.

[0086] Specifically, a mixture of resin and curing agent may be obtained, and then the basalt fiber bundles may be fully soaked in the mixture to obtain a mixed fiber bundle.

[0087] In step 504, the node is provided with multiple layers of grooves on its surface in the z-axis direction, and the depth of the grooves is half the diameter of the mixed fiber bundle. Then, in the z-axis direction, the mixed fiber bundle is rotated around the same layer of grooves of each node in turn by a robot so that the mixed fiber bundle is sunk into the multi-section grooves of the node. After the mixed fiber bundle is solidified, the final frame is obtained.

[0088] When winding the nodes, the first layer of each node can be wound first, then the second layer of each node, and so on, until the highest layer of each node is wound. Then, after the mixed fiber bundle is solidified, the final frame product is obtained.

[0089] Specifically, a robotic algorithm can be pre-set based on the winding method. With the technical support of the robotic algorithm, the robot drives the mixed fiber bundle to rotate around each node once, causing the mixed fiber bundle to sink into the node's groove. The mixed fiber bundle is then stacked layer by layer along the Z direction until the height equals the node height. As shown in Figure 4, each node is surrounded by a series of grooves, the depth of which is generally half the diameter of the mixed fiber bundle. For example, if the diameter of the mixed fiber bundle is 6mm, the depth of the node groove is 3mm.

[0090] Because the resin in the mixed fiber bundle has a lubricating effect, if the surface of the node is smooth, the mixed fiber bundle will slip on the node, which can easily lead to uneven interlayer problems. Providing grooves on the node surface can avoid this problem. Furthermore, setting the groove depth to half the diameter of the mixed fiber bundle not only prevents the mixed fiber bundle from slipping, but also ensures contact between the layers, thereby increasing interlayer density and strength.

[0091] As shown in FIG4 , multiple layers of hybrid fiber bundles 008 are wound around the short cylindrical node 006 , the large cylindrical node 007 and the climbing node 005 on the left side of the frame, and three layers of hybrid fiber bundles 008 are wound around the long cylindrical node 005 in the middle of the frame.

[0092] In Figure 4, both the cylindrical and climbing nodes are formed by connecting each node in a straight line using a hybrid fiber bundle to form a three-dimensional structure. For curved structures, the hybrid fiber bundle needs to be formed into an arc by a contouring fixture between two end nodes. As shown in Figure 7, when passing through an arc path, an end node 009 is set near the tangent of each end of the arc, and the middle is connected by a contouring fixture. In this way, when printing begins, the printing tool head will circle between the two end nodes 009, repeatedly passing through the middle contouring fixture 010. After the hybrid fiber bundle solidifies, the contouring fixture is removed and the contouring fixture 010 is removed after the resin and curing agent are cured.

[0093] In summary, the 3D printing-based vehicle frame production method provided in the embodiments of this application combines a basalt fiber bundle with a resin and a curing agent to produce a hybrid fiber bundle. This hybrid fiber bundle winding process is then combined with 3D printing to completely coat the perimeter of each node with the hybrid fiber bundle. Once the hybrid fiber bundle is cured, a lightweight yet structurally strong vehicle frame is formed. Furthermore, 3D printing technology allows for the batch printing of multiple frames at once, improving frame production efficiency.

[0094] As shown in Figure 8, it shows a structural block diagram of a vehicle frame generation device based on 3D printing provided by an embodiment of the present application. The vehicle frame generation device based on 3D printing can be applied to vehicle frame production equipment. The vehicle frame generation device based on 3D printing can include:

[0095] An acquisition module 810 is configured to acquire a middleware of a vehicle frame generated based on 3D printing, wherein the periphery of the middleware is reserved with node installation positions for multiple nodes, wherein the nodes include at least one of a cylindrical node, a climbing node, and an end node;

[0096] The installation module 820 is used to install each node generated by machining to the corresponding node installation position;

[0097] A generating module 830 is used to obtain a mixed fiber bundle formed by basalt fiber bundles, resin and curing agent;

[0098] The printing module 840 is used to wrap each node on the intermediate component with the mixed fiber bundle, and obtain the final frame after the mixed fiber bundle is cured.

[0099] In an optional embodiment, the node is provided with multiple layers of grooves on the surface in the z-axis direction, and the depth of the grooves is half the diameter of the mixed fiber bundle. Then, the printing module 840 is further configured to:

[0100] In the z-axis direction, the robot is used to rotate the hybrid fiber bundle around the same layer of grooves of each node in turn, so that the hybrid fiber bundle is trapped in the multi-section grooves of the node.

[0101] In an optional embodiment, the apparatus further includes a reservation module 850, configured to:

[0102] Determine the plane structure in the middleware;

[0103] Analyze the stress conditions of plane structures;

[0104] Determine the number of cylindrical nodes to be installed and the position and diameter of each cylindrical node according to the stress conditions;

[0105] Node installation positions are reserved on the plane structure based on the number of cylindrical nodes and the position and diameter of each cylindrical node.

[0106] In an optional embodiment, the reservation module 850 is further configured to:

[0107] When the planar shape of the planar structure is irregular, node installation positions are reserved at the inflection points of the planar structure.

[0108] In an optional embodiment, the reservation module 850 is further configured to:

[0109] Determine the ramp structure in the middleware;

[0110] Determine the number of climbing nodes required to be installed on the slope structure and the location of each climbing node;

[0111] Node installation positions are reserved on the slope structure based on the number of climbing nodes and the position of each climbing node.

[0112] In an optional embodiment, the reservation module 850 is further configured to:

[0113] Identify arc structures in middleware;

[0114] Determine the number of end nodes required to be installed on the arc structure and the position of each end node;

[0115] Node installation positions are reserved on the arc structure based on the number of end nodes and the position of each end node.

[0116] In an optional embodiment, the installation module 820 is further configured to:

[0117] A profiling and positioning tool is provided between the two end nodes, and the profiling and positioning tool is used to position the mixed fiber bundle between the two end nodes into an arc shape;

[0118] After the mixed fiber bundle is solidified, the contour positioning tooling is removed.

[0119] In summary, the 3D-printing-based vehicle frame production device provided in the embodiments of the present application combines a basalt fiber bundle with a resin and a curing agent to produce a hybrid fiber bundle. This hybrid fiber bundle winding process is then combined with 3D printing to completely coat the perimeter of each node with the hybrid fiber bundle. Once the hybrid fiber bundle is cured, a lightweight yet structurally strong vehicle frame is formed. Furthermore, 3D printing technology allows for the batch printing of multiple vehicle frames at once, improving production efficiency.

[0120] One embodiment of the present application provides a computer-readable storage medium, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the above-mentioned 3D printing-based vehicle frame generation method.

[0121] One embodiment of the present application provides a vehicle frame production device, which includes any of the above-mentioned 3D printing-based vehicle frame generation devices.

[0122] It should be noted that the aforementioned embodiments of the 3D printing-based vehicle frame generation device, when performing 3D printing-based vehicle frame generation, illustrate the division of the aforementioned functional modules only as an example. In actual applications, the aforementioned functions can be assigned to different functional modules as needed. Specifically, the internal structure of the 3D printing-based vehicle frame generation device can be divided into different functional modules to perform all or part of the aforementioned functions. Furthermore, the 3D printing-based vehicle frame generation device and the 3D printing-based vehicle frame generation method embodiments share the same concept. The specific implementation process is detailed in the method embodiments and will not be further elaborated here.

[0123] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0124] The above description is not intended to limit the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A frame generation method based on 3D printing, characterized in that: The method comprises: Acquire a middle piece of a vehicle frame generated based on 3D printing, wherein a plurality of node installation positions of nodes are reserved on the periphery of the middle piece, and the nodes include at least one of a cylindrical node, a climbing node, and an end node; Install each node generated by machining to the corresponding node installation position; Obtaining a mixed fiber bundle formed by a basalt fiber bundle, a resin and a curing agent; The mixed fiber bundle is used to wind each node on the intermediate member, and the final vehicle frame is obtained after the mixed fiber bundle is solidified.

2. The frame generation method based on 3D printing according to claim 1, characterized in that: The node is provided with multiple layers of grooves on the surface in the z-axis direction, and the depth of the grooves is half the diameter of the mixed fiber bundle. Then, the mixed fiber bundle is used to wind each node on the intermediate member, including: In the z-axis direction, the mixed fiber bundle is rotated around the same layer of grooves of each node in sequence by a robot, so that the mixed fiber bundle is sunk into the multi-section grooves of the node.

3. The frame generation method based on 3D printing according to claim 1 is characterized in that: The method further comprises: determining a planar structure in the middleware; Analyzing the stress condition of the planar structure; Determine the number of cylindrical nodes to be installed and the position and diameter of each cylindrical node according to the stress conditions; The node installation positions are reserved on the planar structure based on the number of the cylindrical nodes and the position and diameter of each cylindrical node.

4. The frame generation method based on 3D printing according to claim 3 is characterized in that: The method further comprises: When the planar shape of the planar structure is irregular, the node installation position is reserved at the inflection point of the planar structure.

5. The frame generation method based on 3D printing according to claim 1, characterized in that: The method further comprises: determining a ramp structure in the middle piece; Determine the number of climbing nodes required to be installed on the slope structure and the position of each climbing node; The node installation position is reserved on the slope structure based on the number of the climbing nodes and the position of each climbing node.

6. The frame generation method based on 3D printing according to claim 1, characterized in that: The method further comprises: determining an arc structure in the middleware; Determine the number of terminal nodes required to be installed on the arc structure and the position of each terminal node; The node installation position is reserved on the arc structure based on the number of the terminal nodes and the position of each terminal node.

7. The frame generation method based on 3D printing according to claim 6 is characterized in that: The method further comprises: A profiling positioning tool is arranged between the two end nodes, and the profiling positioning tool is used to position the mixed fiber bundle between the two end nodes into an arc shape; After the mixed fiber bundle is solidified, the contour positioning tool is removed.

8. A vehicle frame generation device based on 3D printing, characterized in that: The device comprises: An acquisition module is used to acquire a middleware of a vehicle frame generated based on 3D printing, wherein a plurality of node installation positions are reserved on the periphery of the middleware, and the nodes include at least one of a cylindrical node, a climbing node and an end node; An installation module is used to install each node generated by machining to a corresponding node installation position; A generation module, used for obtaining a mixed fiber bundle formed by a basalt fiber bundle, a resin and a curing agent; A printing module is used to wrap each node on the intermediate piece with the mixed fiber bundle, After the mixed fiber bundle is solidified, the final vehicle frame is obtained.

9. A computer-readable storage medium, characterized in that: The storage medium stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the 3D printing-based frame generation method according to any one of claims 1 to 7.

10. A vehicle frame production equipment, characterized in that: The frame production equipment includes: the 3D printing-based frame generation device described in claim 8.

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