Fender tool design inspection method, device, equipment and storage medium
By converting fender design data into a finite element model and simulating the tooling design process, the deformation problem caused by unreasonable fender tooling design was solved, and rapid and economical tooling design verification was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
- Filing Date
- 2023-02-28
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, unreasonable fender tooling design can lead to fender deformation, affecting the car's aesthetics and user experience, and the cost of experimental verification is high.
By converting the fender design data into a finite element model, the clamping force, bolt tolerance, and tooling removal process in the tooling design scheme are simulated to determine whether the tooling design is reasonable, thus replacing experimental verification.
It enables intuitive determination of whether the tooling design is reasonable, shortens the problem-solving cycle, and reduces testing costs.
Smart Images
Figure CN116628837B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of vehicle manufacturing technology, and in particular to a method, apparatus, equipment and storage medium for inspecting fender tooling design. Background Technology
[0002] As an outer body panel, the fender is characterized by its irregular shape and significant curvature variations. Furthermore, to meet lightweight requirements, the thickness of the fender has been gradually reduced. Deformation of the fender affects the car's aesthetics and the user experience.
[0003] During final assembly, improper tooling design can easily lead to fender deformation, affecting the car's aesthetics and user experience. Currently, the main solution to this problem relies on experimentation. Different installation methods are used to install fenders on actual vehicles, and the deformation after installation is observed to determine a reasonable tooling design. However, this installation experiment is costly. Summary of the Invention
[0004] To address the aforementioned technical issues, this disclosure provides a method, apparatus, equipment, and storage medium for inspecting fender tooling design, enabling a direct assessment of the rationality of the tooling design, shortening the problem-solving cycle, and reducing testing costs.
[0005] In a first aspect, embodiments of this disclosure provide a method for inspecting fender tooling design, including:
[0006] The fender design data is converted into a fender model, which is a finite element model.
[0007] Obtain the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme;
[0008] The preset clamping force is applied to the fender model to obtain the first deformation of the fender model;
[0009] Based on the preset bolt tightening tolerance, the bolt tightening process is simulated to obtain the residual displacement of the fender model;
[0010] Simulate the tooling removal process of the fender model and obtain the deformation information of the fender model before and after tooling removal;
[0011] If the first deformation, residual displacement, and deformation information all meet the preset conditions, then the fender tooling design scheme is determined to be reasonable.
[0012] In some embodiments, converting fender design data into a fender model includes:
[0013] Based on the fender design data, the mid-surface of the fender is extracted;
[0014] A digital mesh is generated on the mid-surface of the fender to obtain the fender model.
[0015] In some embodiments, applying the preset clamping force to the fender model and obtaining the first deformation of the fender model includes:
[0016] Determine the target support and target clamping points of the tooling on the fender model;
[0017] Fix the target support part, and apply the preset clamping force to the target clamping part;
[0018] The normal displacement of the target pressing part is obtained to obtain the first deformation.
[0019] In some embodiments, determining the target support portion and the target clamping portion of the tooling on the fender model includes:
[0020] The outer contours of the tooling support device and the tooling clamping device are projected onto the fender model to obtain the target support part and the target clamping part on the fender model.
[0021] In some embodiments, the step of simulating the bolt tightening process based on the preset bolt tolerance to obtain the residual displacement of the fender model includes:
[0022] The bolt tightening tolerance is used as the normal displacement of the bolt model to simulate the bolt tightening process;
[0023] The normal displacement of the fender model at the deformed position before and after the bolts are tightened is obtained to obtain the residual displacement of the fender model.
[0024] In some embodiments, simulating the tooling removal process of the fender model and obtaining deformation information of the fender model before and after tooling removal includes:
[0025] Obtain the first shape information of the fender model before tooling removal and the second shape information of the fender model after tooling removal;
[0026] The first shape information and the second shape information are compared to obtain the deformation information of the fender model. The deformation information is used to characterize whether the fender has deformed before and after the tooling is removed.
[0027] In some embodiments, the step of determining that the fender tooling design is reasonable if the first deformation, residual displacement, and deformation information all meet preset conditions includes:
[0028] If the first deformation is zero, the residual displacement is less than a preset threshold, and the deformation information indicates that the fender model did not deform before and after the tooling was removed, then the fender tooling design scheme is determined to be reasonable.
[0029] Secondly, embodiments of this disclosure provide a fender tooling design inspection device, comprising:
[0030] The conversion module is used to convert fender design data into a fender model, wherein the fender model is a finite element model;
[0031] The first acquisition module is used to acquire the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme; the second acquisition module is used to apply the preset clamping force to the fender model and acquire the first deformation of the fender model.
[0032] The third acquisition module is used to simulate the bolt tightening process based on the preset bolt tightening tolerance and acquire the residual displacement of the fender model.
[0033] The fourth acquisition module is used to simulate the tooling removal process of the fender model and acquire the deformation information of the fender model before and after tooling removal.
[0034] The determination module is used to determine that the fender tooling design scheme is reasonable if the first deformation, residual displacement, and deformation information all meet preset conditions.
[0035] Thirdly, embodiments of this disclosure provide an electronic device, including:
[0036] Memory;
[0037] Processor; and
[0038] Computer programs;
[0039] The computer program is stored in the memory and configured to be executed by the processor to implement the method as described in the first aspect.
[0040] Fourthly, embodiments of this disclosure provide a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the method described in the first aspect.
[0041] Fifthly, embodiments of this disclosure provide a vehicle including the device, electronic device, or computer-readable storage medium described above.
[0042] The fender tooling design inspection method, apparatus, equipment, and storage medium provided in this disclosure convert fender design data into a finite element model to simulate the actual vehicle fender installation process. The model verifies the clamping force, bolt tolerance, and tooling removal rationality in the tooling design, enabling a more intuitive determination of tooling design rationality. This replaces experimental verification, guides correct product installation, shortens the problem-solving cycle, and reduces testing costs. Attached Figure Description
[0043] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.
[0044] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0045] Figure 1 A flowchart of a fender tooling design inspection method provided in this embodiment of the disclosure;
[0046] Figure 2 A flowchart of a fender tooling design inspection method provided in another embodiment of this disclosure;
[0047] Figure 3 A schematic diagram of the fender and its model provided in the embodiments of this disclosure;
[0048] Figure 4 A flowchart of a fender tooling design inspection method provided in another embodiment of this disclosure;
[0049] Figure 5 A schematic diagram of the structure of the fender tooling design inspection device provided in an embodiment of this disclosure;
[0050] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation
[0051] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0052] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.
[0053] This disclosure provides a method for inspecting the tooling design of a fender. The method will be described below with reference to specific embodiments.
[0054] Figure 1 This is a flowchart illustrating the fender tooling design inspection method provided in this embodiment. This method can be applied to any device with data processing capabilities, such as in-vehicle systems, smartphones, PDAs, tablets, laptops, all-in-one computers, and autonomous driving devices. It is understood that the fender tooling design inspection method provided in this embodiment can also be applied to other scenarios.
[0055] The following is about Figure 1 The following describes the design and inspection method for the fender tooling shown in the diagram. The specific steps of this method are as follows:
[0056] S101. Convert the fender design data into a fender model, wherein the fender model is a finite element model.
[0057] The fender is one of the exterior body panels of the vehicle. First, the design data of the fender during the overall vehicle design process is obtained. This design data includes, but is not limited to, the fender's shape, dimensions, thickness, and material information. Specifically, the design data can be CATIA (Computer Aided Three-dimensional Interactive Application) design data. Based on the fender design data, a fender model can be created, such as a finite element model (FEM).
[0058] In some embodiments, design data for three parts—the fender, the fender reinforcement plate, and the rear fender reinforcement plate—are selected and converted into fender models, fender reinforcement plate models, and rear fender reinforcement plate models, respectively. These models are then assembled according to the actual vehicle configuration, forming a single integrated fender model. The REB3-HEXA-REB3 unit can be used to simulate adhesive application on the actual vehicle to connect the three parts.
[0059] S102. Obtain the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme.
[0060] During vehicle assembly, fender tooling is used to position and secure the fenders. The tooling design varies depending on the vehicle model. For example, different tooling designs have different clamping forces and bolt tolerances. The tooling includes a tooling support and a tooling clamping device. The tooling support supports the fender, while the clamping device applies clamping force to the other side of the fender, working in conjunction with the tooling support to secure it. The bolt tolerance is the normal displacement of the bolt perpendicular to the fender direction during bolt tightening at the fender bolt holes.
[0061] Based on the actual tooling design scheme, determine the preset clamping force and preset tightening bolt tolerance of the tooling design scheme.
[0062] S103. Apply the preset clamping force to the fender model to obtain the first deformation of the fender model.
[0063] Based on the tooling design scheme and the actual tooling process, the contact points between the tooling and the fender are determined on the fender model, and a corresponding preset clamping force is set at this location. The preset clamping force is generally between 0-3000N, depending on the tooling design scheme. When the fender model is subjected to the preset clamping force, deformation may occur at the clamping point. The deformation of the clamping point, i.e., the first deformation of the fender model, can be obtained by reading the fender model data.
[0064] S104. Based on the preset bolt tightening tolerance, simulate the bolt tightening process and obtain the residual displacement of the fender model.
[0065] The bolt tightening process is simulated at the bolt hole locations on the fender model. The bolt tightening tolerance is determined by the gap between the fender and the fender mounting bracket. A larger gap results in a larger tightening tolerance, and a smaller gap results in a smaller tolerance. The tightening tolerance is generally between 0-5mm. Excessive gap can lead to excessive residual displacement of the fender after tightening, causing deformation. Residual displacement refers to the deformation of the fender before and after bolt tightening. This residual displacement can be obtained by reading the fender model data. In the FEM model, the RBE3 element can be used to simulate the bolt.
[0066] S105. Simulate the tooling removal process of the fender model and obtain the deformation information of the fender model before and after tooling removal.
[0067] In actual vehicle assembly, tooling needs to be removed after tightening bolts. Therefore, simulating tooling removal can determine whether it adversely affects the fender deformation. An unloading analysis is set up on the fender model, and a preset clamping force is removed to simulate the tooling removal process. By reading the fender model data, the deformation information of the fender model before and after tooling removal can be obtained.
[0068] S106. If the first deformation, residual displacement, and deformation information all meet the preset conditions, then the fender tooling design scheme is determined to be reasonable.
[0069] A comprehensive analysis is performed on the first type of variable, residual displacement, and deformation information obtained in the above steps. If all the above data meet the preset conditions, it is determined that the preset clamping force and preset bolt tightening tolerance design are reasonable, and the tooling design scheme of the fender is further determined to be reasonable.
[0070] In some embodiments, if the first deformation is zero, the preset clamping force is determined to be reasonable; if the residual displacement is less than the preset threshold, the bolt tightening tolerance is determined to be reasonable; if the above preset conditions are met, and the deformation information determines that the fender model has not deformed before and after the tooling is removed, the fender tooling design scheme is determined to be reasonable.
[0071] This embodiment converts fender design data into a fender model; obtains the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme; applies the preset clamping force to the fender model and obtains the first deformation of the fender model; simulates the bolt tightening process based on the preset tightening bolt tolerance and obtains the residual displacement of the fender model; simulates the tooling removal process of the fender model and obtains the deformation information of the fender model before and after tooling removal; if the first deformation, residual displacement, and deformation information all meet preset conditions, the fender tooling design scheme is determined to be reasonable. By converting the fender design data into a finite element model and simulating the actual vehicle fender installation process, the model verifies the clamping force, tightening bolt tolerance, and tooling removal rationality in the tooling design. This allows for a more intuitive determination of the tooling design's rationality, replacing experimental verification, guiding correct product installation, shortening the problem-solving cycle, and reducing testing costs.
[0072] Figure 2 A flowchart illustrating a fender tooling design and inspection method according to another embodiment of this disclosure. Figure 2 As shown, the method includes the following steps:
[0073] S201. Based on the fender design data, extract the mid-surface of the fender.
[0074] S202. A digital mesh is generated on the mid-surface of the fender to obtain the fender model.
[0075] Based on the fender design data, the mid-surface of the fender model is extracted to obtain a curved surface for generating a digital mesh. Meshing is then performed on this curved surface, which not only eliminates the need for stretching but also facilitates node overlap, making the process convenient, efficient, and error-reducing. Furthermore, based on the fender design data, actual thickness and material properties are assigned to it, resulting in the final fender model.
[0076] Figure 3 A schematic diagram of a fender and its model provided for an embodiment of this disclosure. Figure 3 As shown, after model conversion, the fender of the real car is transformed into a fender model with a digital mesh, which carries various data such as the thickness and material of the real car's fender.
[0077] S203. Determine the target support location and target clamping location of the tooling on the fender model.
[0078] Optionally, the outer contours of the tooling support device and the tooling clamping device are projected onto the fender model to obtain the target support part and the target clamping part on the fender model.
[0079] In the FEM model, geometric nonlinearity is enabled to simulate the actual tooling clamping process. To facilitate the precise application of the preset clamping force, the target support and target clamping locations need to be determined on the fender model. Therefore, the outer contour of the tooling support device is projected onto the fender model to obtain the target support location on the fender model; the outer contour of the tooling clamping device is projected onto the fender model to obtain the target clamping location on the fender model.
[0080] Specifically, the FEM model settings are as follows: shell mesh > project > Perimeters, select the fender mesh as the target, and select the outer contours of the tooling support device and the tooling clamping device for the outer edge.
[0081] S204. Fix the target support part and apply the preset clamping force to the target clamping part.
[0082] Even if the position of the target support remains unchanged in space, this can be achieved by fixing the normal degree of freedom of the target support. Specifically, the method for setting the FEM model is: BOUNDARY>TYPE(DISPLACEMENT)>DOF>Magn(0).
[0083] Based on the target clamping location (i.e., the projection of the outer contour of the tooling clamping device) determined in the above steps, a preset clamping force is applied at that location. Specifically, the method for setting up the FEM model is: DLOAD(ELEMENT)>STEP1>LOADTYPE(P)>DOF>Magn(), where the cell for applying the clamping force is the target clamping location.
[0084] S205. Obtain the normal displacement of the target pressing part to obtain the first deformation.
[0085] To determine whether the target clamping part deforms after a preset clamping force is applied, the normal displacement of the target clamping part can be obtained.
[0086] Optionally, a local coordinate system can be created at the target clamping area of the fender model. This can be done by going to NODE > ZRECTANGLAR. Select three adjacent nodes of the digitized mesh at the target clamping area on the fender model to create the local coordinate system. Use Hyperview to read the normal displacement of the target clamping area on the fender model under the local coordinate system, which is the first deformation.
[0087] S206. Based on the preset bolt tightening tolerance, simulate the bolt tightening process and obtain the residual displacement of the fender model.
[0088] Optionally, the bolt tolerance is used as the normal displacement of the bolt model to simulate the bolt tightening process; the normal displacement of the fender model before and after bolt tightening is obtained to obtain the residual displacement of the fender model.
[0089] Specifically, apply the normal displacement of the bolt model at the bolt hole location using the following method: BOUNDARY>STEP2>TYPE(DISPLACEMENT)>DOF>Magn(). Following the steps above, establish a local coordinate system at the bolt hole location. Use Hyperview to read the normal displacement of the bolt hole portion of the fender model within the local coordinate system; this is the residual displacement of the fender model.
[0090] like Figure 3 As shown, the tolerance for tightening bolts is set to 2mm. Hyperview is used to read the normal displacement of the bolt holes on the fender model in the local coordinate system. A negative displacement indicates a dent in the fender. Figure 2 The residual displacement at the center circle position, i.e., the sharp corner of the fender, is 0.01 mm.
[0091] S207. Simulate the tooling removal process of the fender model and obtain the deformation information of the fender model before and after tooling removal.
[0092] Optionally, the first shape information of the fender model before tooling removal and the second shape information of the fender model after tooling removal are obtained; the first shape information and the second shape information are compared to obtain the deformation information of the fender model, and the deformation information is used to characterize whether the fender has deformed before and after tooling removal.
[0093] Specifically, the FEM model is set up as follows: STEP>NEW>NLGEOM(YES)>OP=NEW(DLOAD).
[0094] S208. If the first deformation is zero, the residual displacement is less than a preset threshold, and the deformation information indicates that the fender model did not deform before and after the tooling was removed, then the fender tooling design scheme is determined to be reasonable.
[0095] In some embodiments, if the first deformation is zero, the preset clamping force is determined to be reasonable; if the residual displacement is less than the preset threshold, the bolt tightening tolerance is determined to be reasonable; if the above preset conditions are met, and the deformation information determines that the fender model has not deformed before and after the tooling is removed, the fender tooling design scheme is determined to be reasonable.
[0096] This disclosure converts CATIA design data into an FEM model to simulate the installation process of a real vehicle fender, providing support for verifying the rationality of the tooling design method, guiding the correct installation of the product, effectively shortening the problem-solving cycle and reducing testing costs.
[0097] Figure 4 A flowchart illustrating a fender tooling design and inspection method according to another embodiment of this disclosure. Figure 4 As shown, the method includes the following steps:
[0098] S401. Convert the fender design data into a fender model, wherein the fender model is a finite element model.
[0099] S402. Obtain the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme.
[0100] S403. Apply the preset clamping force to the fender model to obtain the first deformation of the fender model.
[0101] S404. Based on the preset bolt tightening tolerance, simulate the bolt tightening process and obtain the residual displacement of the fender model.
[0102] S405. Simulate the tooling removal process of the fender model and obtain the deformation information of the fender model before and after tooling removal.
[0103] Specifically, the implementation process and principle of S401~S405 and S101~S105 are the same, and will not be repeated here.
[0104] S406. Determine whether the first deformation, residual displacement, and deformation information meet the preset conditions, and obtain the determination result.
[0105] During the simulated tooling clamping process, if the clamping force applied to the clamping part is too large, it will cause deformation of the clamping part of the fender. If the clamping part of the fender does not deform, that is, the first deformation is zero, it can be determined that the preset clamping force does not exceed the maximum bearing threshold of the fender.
[0106] During the simulated bolt tightening process, if the bolt tightening tolerance is too large, it will lead to excessive residual displacement of the fender after tightening, resulting in deformation. If the residual displacement of the fender after tightening is less than a preset threshold, it can be determined that the preset bolt tightening tolerance is within a reasonable range.
[0107] During the simulated tooling removal process, it should be ensured that the fender deformation state is consistent before and after tooling removal. Therefore, if the deformation information indicates that the fender model has not deformed before and after tooling removal, it can be determined that the tooling removal is reasonable.
[0108] S407. Based on the judgment result, the fender tooling design scheme is adjusted.
[0109] When the first deformation is zero, the preset clamping force can be gradually increased; when the first deformation is not zero, the preset clamping force needs to be decreased.
[0110] When the residual displacement is less than the preset threshold, the tightening bolt tolerance can be gradually increased; when the residual displacement is greater than or equal to the preset threshold, the tightening bolt tolerance needs to be reduced.
[0111] When the deformation information indicates that the fender model deforms before and after the tooling is removed, it indicates that the tooling design is unreasonable and the constraints of the tooling need to be adjusted, such as adjusting the preset clamping force.
[0112] This disclosure converts CATIA design data into an FEM model to simulate the actual vehicle fender installation process, further adjusting and designing the tooling design scheme, providing support for the rational design of tooling methods, replacing experimental verification, and reducing testing costs.
[0113] Figure 5This is a schematic diagram of the structure of the fender tooling design inspection device provided in this embodiment. The fender tooling design inspection device can be any device with data processing function as described in the above embodiment, or it can be a component or assembly within that data processing device. The fender tooling design inspection device provided in this embodiment can execute the processing flow provided in the fender tooling design inspection method embodiment, such as... Figure 5 As shown, the fender tooling design inspection device 50 includes: a conversion module 51, a first acquisition module 52, a second acquisition module 53, a third acquisition module 54, a fourth acquisition module 55, and a determination module 56. The conversion module 51 converts fender design data into a fender model, which is a finite element model. The first acquisition module 52 acquires the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme. The second acquisition module 53 applies the preset clamping force to the fender model and acquires the first deformation of the fender model. The third acquisition module 54 simulates the bolt tightening process based on the preset tightening bolt tolerance and acquires the residual displacement of the fender model. The fourth acquisition module 55 simulates the tooling removal process of the fender model and acquires the deformation information of the fender model before and after tooling removal. The determination module 56 determines that the fender tooling design scheme is reasonable if the first deformation, residual displacement, and deformation information all meet preset conditions.
[0114] Optionally, the conversion module 51 includes an extraction unit 511 and a generation unit 512; wherein the extraction unit 511 is used to extract the mid-surface of the fender based on the fender design data; and the generation unit 512 is used to generate a digital mesh on the mid-surface of the fender to obtain a fender model.
[0115] Optionally, the second acquisition module 53 includes a determining unit 531, a first simulation unit 532, and a first acquisition unit 533; wherein the determining unit 531 is used to determine the target support part and the target clamping part of the tooling on the fender model; the first simulation unit 532 is used to fix the target support part and apply the preset clamping force to the target clamping part; the first acquisition unit 533 is used to acquire the normal displacement of the target clamping part to obtain the first deformation.
[0116] Optionally, the determining unit 531 is used to project the outer contour of the tooling support device and the outer contour of the tooling clamping device onto the fender model, respectively, to obtain the target support part and the target clamping part on the fender model.
[0117] Optionally, the third acquisition module 54 includes a second simulation unit 541 and a second acquisition unit 542; the second simulation unit 541 is used to simulate the bolt tightening process by taking the tightening bolt tolerance as the normal displacement of the bolt model; the second acquisition unit 542 is used to acquire the normal displacement of the deformation position of the fender model before and after the bolt is tightened, and obtain the residual displacement of the fender model.
[0118] Optionally, the fourth acquisition module 55 includes a third acquisition unit 551 and a comparison unit 552; the third acquisition unit 551 is used to acquire the first shape information of the fender model before tooling removal and the second shape information of the fender model after tooling removal; the comparison unit 552 is used to compare the first shape information and the second shape information to obtain the deformation information of the fender model, and the deformation information is used to characterize whether the fender has deformed before and after tooling removal.
[0119] Optionally, the determining module 56 is used to determine that the fender tooling design scheme is reasonable if the first deformation is zero, the residual displacement is less than a preset threshold, and the deformation information characterizes that the fender model did not deform before and after the tooling was removed.
[0120] Figure 5 The fender tooling design inspection device of the embodiment shown can be used to execute the technical solution of the above method embodiment. Its implementation principle and technical effect are similar, and will not be described again here.
[0121] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure. The electronic device can be any device with data processing capabilities as described in the above embodiments. The electronic device provided in this disclosure can execute the processing flow provided in the embodiment of the fender tooling design inspection method, such as... Figure 6 As shown, the electronic device 60 includes: a memory 61, a processor 62, a computer program, and a communication interface 63; wherein the computer program is stored in the memory 61 and is configured to be executed by the processor 62 as described above, using the fender tooling design inspection method.
[0122] In addition, this disclosure also provides a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the fender tooling design inspection method described in the above embodiments.
[0123] Furthermore, this disclosure also provides a computer program product, which includes a computer program or instructions that, when executed by a processor, implement the fender tooling design inspection method as described above.
[0124] Computer program code for performing the operations of this disclosure can be written in one or more programming languages or a combination thereof, including but not limited to object-oriented programming languages such as Java, Smalltalk, and C++, as well as conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).
[0125] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.
[0126] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0127] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A fender tool design verification method, characterized by, The method includes: The fender design data is converted into a fender model, which is a finite element model. Obtain the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme; The preset clamping force is applied to the fender model to obtain the first deformation of the fender model; Based on the preset bolt tightening tolerance, the bolt tightening process is simulated to obtain the residual displacement of the fender model; Simulate the tooling removal process of the fender model and obtain the deformation information of the fender model before and after tooling removal; If the first deformation, residual displacement, and deformation information all meet the preset conditions, then the fender tooling design scheme is determined to be reasonable.
2. The method according to claim 1, characterized in that, The process of converting fender design data into a fender model includes: Based on the fender design data, the mid-surface of the fender is extracted; A digital mesh is generated on the mid-surface of the fender to obtain the fender model.
3. The method of claim 1, wherein, Applying the preset clamping force to the fender model and obtaining the first deformation of the fender model includes: Determine the target support and target clamping points of the tooling on the fender model; Fix the target support part, and apply the preset clamping force to the target clamping part; The normal displacement of the target pressing part is obtained to obtain the first deformation.
4. The method of claim 3, wherein, The determination of the target support location and target clamping location of the tooling on the fender model includes: The outer contours of the tooling support device and the tooling clamping device are projected onto the fender model to obtain the target support part and the target clamping part on the fender model.
5. The method of claim 1, wherein, The step of simulating the bolt tightening process based on the preset bolt tolerance and obtaining the residual displacement of the fender model includes: The bolt tightening tolerance is used as the normal displacement of the bolt model to simulate the bolt tightening process; The normal displacement of the fender model at the deformed position before and after the bolts are tightened is obtained to obtain the residual displacement of the fender model.
6. The method of claim 1, wherein, The simulation of the tooling removal process of the fender model, obtaining deformation information of the fender model before and after tooling removal, includes: Obtain the first shape information of the fender model before tooling removal and the second shape information of the fender model after tooling removal; The first shape information and the second shape information are compared to obtain the deformation information of the fender model. The deformation information is used to characterize whether the fender deforms before and after the tooling is removed.
7. The method of claim 1, wherein, If the first deformation, residual displacement, and deformation information all meet preset conditions, then the fender tooling design scheme is determined to be reasonable, including: If the first deformation is zero, the residual displacement is less than a preset threshold, and the deformation information indicates that the fender model did not deform before and after the tooling was removed, then the fender tooling design scheme is determined to be reasonable.
8. A fender tooling design verification apparatus, characterized by, The device includes: The conversion module is used to convert fender design data into a fender model, wherein the fender model is a finite element model; The first acquisition module is used to acquire the preset clamping force and preset tightening bolt tolerance in the fender tooling design scheme; The second acquisition module is used to apply the preset clamping force to the fender model and acquire the first deformation of the fender model; The third acquisition module is used to simulate the bolt tightening process based on the preset bolt tightening tolerance and acquire the residual displacement of the fender model. The fourth acquisition module is used to simulate the tooling removal process of the fender model and acquire the deformation information of the fender model before and after tooling removal. The determination module is used to determine that the fender tooling design scheme is reasonable if the first deformation, residual displacement, and deformation information all meet preset conditions.
9. An electronic device, comprising: include: Memory; processor; as well as Computer programs; The computer program is stored in the memory and configured to be executed by the processor to implement the method as described in any one of claims 1-7.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-7.