Method and device for manufacturing digital model of vehicle parts

Abstract

The present application relates to a method and device for manufacturing a digital model of vehicle parts. The method includes: modifying a first constraint layout for assembling with a whole vehicle to obtain a second constraint layout, performing springback detection on the digital model of the vehicle parts to obtain the clamping forces of the constraint points in the second constraint layout, screening the second constraint layout to obtain a third constraint layout, performing springback detection on the digital model of the vehicle parts to obtain first springback data, and performing springback compensation on the digital model of the vehicle parts; respectively performing springback detection on the digital model of the vehicle parts after springback compensation based on the first constraint layout, the third constraint layout, and a fourth constraint layout for assembling with a checking fixture. If the corresponding springback data are all within a preset springback data range, then output the digital model of the vehicle parts after springback compensation. It is easier to obtain a digital model of vehicle parts that passes the springback detection during both checking fixture assembly and whole vehicle assembly.

Description

Technical Field

[0001] This application relates to the technical field of vehicle component processing, and particularly to a method and device for manufacturing a digital model of a vehicle component. Background Art

[0002] Springback is caused by the recovery of elastic deformation within a component after the external force is unloaded. Springback can lead to unqualified component dimensions, and springback of vehicle components will reduce the quality during the assembly of the entire vehicle. Usually, before manufacturing vehicle components, through simulation technology, the springback of the digital model of the vehicle component is detected according to the constraint layout of the inspection fixture, and springback compensation is performed based on the detection results.

[0003] However, due to the different constraint layouts between the inspection fixture and the entire vehicle during assembly, it is difficult to obtain a digital model of a vehicle component that passes the springback detection results both in the inspection fixture and during the assembly of the entire vehicle through simulation technology. Summary of the Invention

[0004] In view of the shortcomings of the existing methods, this application provides a method and device for manufacturing a digital model of a vehicle component to solve the technical problem in the existing technology that it is difficult to obtain a digital model of a vehicle component that passes the springback detection results both in the inspection fixture and during the assembly of the entire vehicle.

[0005] In a first aspect, an embodiment of this application provides a method for manufacturing a digital model of a vehicle component, including: modifying a first constraint layout of the digital model of the vehicle component for assembly with the entire vehicle to obtain a second constraint layout; based on the second constraint layout, performing springback detection on the digital model of the vehicle component to obtain the clamping forces of each constraint point in the second constraint layout; screening the second constraint layout according to the clamping forces of each constraint point in the second constraint layout to obtain a third constraint layout; based on the third constraint layout, performing springback detection on the digital model of the vehicle component to obtain the first springback data of the digital model of the vehicle component; performing springback compensation on the digital model of the vehicle component according to the first springback data to obtain a digital model of the vehicle component after springback compensation; based on the first constraint layout, the third constraint layout, and a fourth constraint layout for assembly with the inspection fixture, respectively performing springback detection on the digital model of the vehicle component after springback compensation to respectively obtain the second springback data, the third springback data, and the fourth springback data of the digital model of the vehicle component after springback compensation; if the second springback data, the third springback data, and the fourth springback data are all within a preset springback data range, outputting the digital model of the vehicle component after springback compensation so that production personnel can manufacture vehicle components according to the digital model of the vehicle component after springback compensation.

[0006] As an alternative implementation, modifying the first constraint layout for assembling with the whole vehicle of the digital model of vehicle parts to obtain a second constraint layout includes: moving the constraint points located in the non-visible area of the whole vehicle appearance within the shortest moving distance to the visible area of the whole vehicle appearance to obtain the second constraint layout.

[0007] As an alternative implementation, modifying the first constraint layout for assembling with the whole vehicle of the digital model of vehicle parts to obtain a second constraint layout includes: moving the constraint points located in the non-visible area of the whole vehicle appearance within the shortest moving distance to the visible area of the whole vehicle appearance, and adding the constraint points in the non-critical main type area of the fourth constraint layout to the first constraint layout to obtain the second constraint layout.

[0008] As an alternative implementation, the springback data includes the clamping force corresponding to the constraint points. Screening the second constraint layout according to the clamping forces of the constraint points in the second constraint layout to obtain a third constraint layout includes: removing the constraint points with clamping forces greater than the preset clamping force threshold in the second constraint layout to obtain the third constraint layout.

[0009] As an alternative implementation, the method further includes: if any of the second springback data, the third springback data, and the fourth springback data is not within the preset springback data range, repeating the step of performing springback detection on the digital model of vehicle parts based on the third constraint layout to obtain the first springback data of the digital model of vehicle parts.

[0010] Second aspect, an apparatus for manufacturing a digital mock-up of a vehicle component is provided in an embodiment of the present application, including: a modification module configured to modify a first constraint layout for assembling with a whole vehicle of the digital mock-up of the vehicle component to obtain a second constraint layout; a first detection module configured to perform a springback detection on the digital mock-up of the vehicle component based on the second constraint layout to obtain the clamping force of each constraint point in the second constraint layout; a screening module configured to screen the second constraint layout according to the clamping force of each constraint point in the second constraint layout to obtain a third constraint layout; a second detection module configured to perform a springback detection on the digital mock-up of the vehicle component based on the third constraint layout to obtain first springback data of the digital mock-up of the vehicle component; a compensation module configured to perform a springback compensation on the digital mock-up of the vehicle component according to the first springback data to obtain a digital mock-up of the vehicle component after springback compensation; a third detection module configured to perform a springback detection on the digital mock-up of the vehicle component after springback compensation based on the first constraint layout, the third constraint layout, and a fourth constraint layout for assembling with a jig, respectively, to obtain second springback data, third springback data, and fourth springback data of the digital mock-up of the vehicle component after springback compensation; and an output module configured to output the digital mock-up of the vehicle component after springback compensation if the second springback data, the third springback data, and the fourth springback data are all within a preset springback data range, so that production personnel can produce vehicle components according to the digital mock-up of the vehicle component after springback compensation.

[0011] As an optional implementation manner, the modification module is specifically configured to: move the constraint points in the first constraint layout that are located in a non-visible area of the whole vehicle appearance along the shortest moving distance to the visible area of the whole vehicle appearance to obtain a second constraint layout.

[0012] As an optional implementation manner, the modification module is specifically configured to: move the constraint points in the first constraint layout that are located in a non-visible area of the whole vehicle appearance along the shortest moving distance to the visible area of the whole vehicle appearance, and add the constraint points in the non-critical main type area of the fourth constraint layout to the first constraint layout to obtain a second constraint layout.

[0013] As an optional implementation manner, the screening module is specifically configured to: remove the constraint points in the second constraint layout whose clamping force is greater than a preset clamping force threshold to obtain a third constraint layout.

[0014] As an optional implementation manner, the apparatus further includes: a repeated execution module configured to, if any of the second springback data, the third springback data, and the fourth springback data is not within a preset springback data range, repeatedly execute the step of performing a springback detection on the digital mock-up of the vehicle component based on the third constraint layout to obtain the first springback data of the digital mock-up of the vehicle component.

[0015] The present application provides a method and device for manufacturing a digital mock-up of vehicle parts. The technical solution provided by the embodiments of the present application at least brings the following beneficial effects:

[0016] By modifying the first constraint layout for assembling with the whole vehicle of the digital mock-up of vehicle parts, a second constraint layout is obtained. Based on the obtained second constraint layout, the digital mock-up of vehicle parts is subjected to springback detection, and through screening, the constraint points that do not meet the pre-tightening force requirements are removed to obtain a third constraint layout with a more reasonable layout, so as to determine the constraint layout of the digital mock-up of vehicle parts. Then, the digital mock-up of vehicle parts is subjected to springback detection, and springback compensation is performed on the digital mock-up of vehicle parts according to the first springback data of the obtained digital mock-up of vehicle parts to obtain the digital mock-up of vehicle parts after springback compensation, ensuring the effectiveness of springback compensation and improving the compensation efficiency. After that, based on the first constraint layout, the third constraint layout, and the fourth constraint layout for assembling with the inspection fixture, the digital mock-up of vehicle parts after springback compensation is respectively subjected to springback detection to obtain the second springback data, the third springback data, and the fourth springback data of the digital mock-up of vehicle parts after springback compensation. If the second springback data, the third springback data, and the fourth springback data are all within the preset springback data range, the digital mock-up of vehicle parts after springback compensation is output, so that production personnel can produce vehicle parts according to the digital mock-up of vehicle parts after springback compensation. This can avoid the situation where the springback detection on the inspection fixture is qualified, but the springback detection is unqualified during the assembly of the whole vehicle, and further shorten the R & D cycle of vehicle parts.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic flowchart of a method for manufacturing a digital mock-up of vehicle parts provided by an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of the first constraint layout in a method for manufacturing a digital mock-up of vehicle parts provided by an embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of the fourth constraint layout in a method for manufacturing a digital mock-up of vehicle parts provided by an embodiment of the present application;

[0022] Figure 4 Schematic diagram of the third constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0023] Figure 5 Schematic diagram of the springback data before compensation of the third constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0024] Figure 6 Schematic diagram of the springback data after compensation of the third constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0025] Figure 7 Schematic diagram of the springback data before compensation of the fourth constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0026] Figure 8 Schematic diagram of the springback data after compensation of the fourth constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0027] Figure 9 Schematic diagram of the springback data before compensation of the first constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0028] Figure 10 Schematic diagram of the springback data after compensation of the first constraint layout in a method for manufacturing a digital mock-up of a vehicle component provided by an embodiment of the present application;

[0029] Figure 11 Schematic flow diagram of a method for manufacturing a digital mock-up of a vehicle component provided by another embodiment of the present application;

[0030] Figure 12 Schematic diagram of the frame structure of a manufacturing device for a digital mock-up of a vehicle component provided by an embodiment of the present application.

[0031] Reference numerals and corresponding descriptions:

[0032] 201: Modification module;

[0033] 202: First detection module;

[0034] 203: Screening module;

[0035] 204: Second detection module;

[0036] 205: Compensation module;

[0037] 206: Third detection module;

[0038] 207: Output module. Specific implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] First, several terms related to the present application will be introduced and explained:

[0041] GD&T: Abbreviation for Geometric Dimensioning and Tolerancing, which means geometric dimension and tolerance. Any part is composed of points, lines and surfaces, and these points, lines and surfaces are called elements. There are always errors between the actual elements of a part after machining and the ideal elements, including shape errors and position errors. Such errors affect the functions of mechanical products, and corresponding tolerances should be specified during design and marked on the drawings according to the specified standard symbols.

[0042] AutoForm: A sheet metal forming simulation software used for body development and die manufacturing.

[0043] The embodiment of the present application provides a method for manufacturing a digital mock-up of a vehicle component, as Figure 1 shown, the method for manufacturing a digital mock-up of a vehicle component mainly includes steps S101 - S107:

[0044] Step S101: Modify the first constraint layout for assembling the vehicle component digital mock-up with the whole vehicle to obtain a second constraint layout.

[0045] The constraint layout in the embodiment of the present application includes the position distribution of constraint points on the digital mock-up of the vehicle component, and the connection methods when the constraint points are assembled with the inspection fixture and / or the whole vehicle. The connection methods may include dowel pin connection, support connection and clamping connection. Correspondingly, the constraint points connected by dowel pin are positioning points, the constraint points connected by support are support points, and the constraint points connected by clamping are clamping points. The first constraint layout for assembling with the whole vehicle and the fourth constraint layout for assembling with the inspection fixture can be obtained from the GD&T (Geometric Dimensioning and Tolerancing) drawing, and the GD&T drawing can be made by a dimension engineer.

[0046] As an optional implementation manner, in step S101, modifying the first constraint layout for assembling the vehicle component digital mock-up with the whole vehicle to obtain a second constraint layout includes:

[0047] Move the constraint points in the first constraint layout that are within the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance to obtain the second constraint layout.

[0048] The digital model of vehicle parts includes the visible area of the vehicle's overall appearance and the non-visible area of the vehicle's overall appearance. The non-visible area of the vehicle's overall appearance is the structural surface of vehicle parts, that is, the surface formed by shaping or flanging. The constraint points in the first constraint layout that are within the non-visible area of the vehicle's overall appearance can be moved to the visible area of the vehicle's overall appearance, and the distance from the position before moving should not be too far, so as to reduce the difference in the constraint layout between the digital model of vehicle parts and the actual vehicle parts.

[0049] In some possible embodiments, the first constraint layout is as Figure 2 shown, and the third constraint layout is as Figure 4 shown. Figure 2 In it, A4, A5, positioning hole 1, positioning hole 2, A10, E1, E2, E3, A1’, A9’ and A8 are all constraint points. Among them, A4, A5 and A9’ are within the non-visible area of the vehicle's overall appearance. Figure 4 In it, A4’, A5’ and A9” are the constraint points obtained by moving the constraint points in the first constraint layout that are within the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance.

[0050] As an alternative implementation, in step S101, modifying the first constraint layout of the digital model of vehicle parts for assembling with the whole vehicle to obtain the second constraint layout includes:

[0051] Move the constraint points in the first constraint layout that are within the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance, and add the constraint points in the non-critical main type area of the fourth constraint layout to the first constraint layout to obtain the second constraint layout.

[0052] Based on the foregoing embodiments, in some possible embodiments, since the constraint points in the non-critical main type area do not have a matching relationship with other components during the assembly of the whole vehicle, but have a matching relationship during the assembly with the checking fixture, therefore, in order to ensure that the springback detection is qualified both during the assembly with the checking fixture and the whole vehicle, after moving the constraint points in the first constraint layout that are within the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance, add the constraint points in the non-critical main type area, that is, the constraint points in the area without a matching relationship during the assembly of the whole vehicle, to the first constraint layout, thereby obtaining a more reasonable constraint layout and improving the accuracy and efficiency of subsequent springback compensation.

[0053] In some possible embodiments, the fourth constraint layout is as Figure 3 shown, and the third constraint layout is as Figure 4 shown.Figure 3 Among them, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, positioning hole 1, positioning hole 2, E1, and E2 are all constraint points. Among them, Figure 3 and Figure 4 among them, A6 and A7 are constraint points in the non-critical main type area.

[0054] Step S102: Based on the second constraint layout, perform springback detection on the vehicle component digital model to obtain the clamping forces of the constraint points in the second constraint layout.

[0055] The vehicle component digital model can be input into AutoForm for springback detection and simulation detection to obtain the clamping forces of the constraint points in the second constraint layout.

[0056] Step S103: Screen the second constraint layout according to the clamping forces of the constraint points in the second constraint layout to obtain the third constraint layout.

[0057] As an optional implementation manner, the springback data in S103 includes the clamping forces corresponding to the constraint points. Screening the second constraint layout according to the clamping forces of the constraint points in the second constraint layout to obtain the third constraint layout includes:

[0058] Removing the constraint points in the second constraint layout whose clamping forces are greater than the preset clamping force threshold to obtain the third constraint layout.

[0059] When assembling with the inspection fixture and the whole vehicle, the binding force between the clamping points and the vehicle components is the most significant, and the resulting springback is also the largest. Therefore, in order to improve the efficiency and accuracy of springback compensation, the constraint points with clamping forces greater than the preset clamping force threshold can be removed.

[0060] Step S104: Based on the third constraint layout, perform springback detection on the vehicle component digital model to obtain the first springback data of the vehicle component digital model.

[0061] As Figures 5 - 10 shown, Figure 5 is a schematic diagram of the springback data before compensation of the third constraint layout in a method for manufacturing a vehicle component digital model provided by an embodiment of the present application; Figure 6 is a schematic diagram of the springback data after compensation of the third constraint layout in a method for manufacturing a vehicle component digital model provided by an embodiment of the present application; Figure 7 is a schematic diagram of the springback data before compensation of the fourth constraint layout in a method for manufacturing a vehicle component digital model provided by an embodiment of the present application; Figure 8 is a schematic diagram of the springback data after compensation of the fourth constraint layout in a method for manufacturing a vehicle component digital model provided by an embodiment of the present application; Figure 9Schematic diagram of springback data before the first constraint layout compensation in the method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application; Figure 10 Schematic diagram of springback data after the first constraint layout compensation in the method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application; Figures 5 - 10 The positive and negative values therein are springback amounts. Among them, the positive value represents the protruding effect and the protruding value, and the negative value represents the recessed effect and the recessed value.

[0062] Step S105: According to the first springback data, perform springback compensation on the digital model of the vehicle part to obtain the digital model of the vehicle part after springback compensation.

[0063] Through the foregoing steps, a reliable constraint layout can be obtained. The reliable constraint layout can obtain accurate springback amounts, making the springback amount compensation more reliable, avoiding ineffective compensation, improving the compensation success rate, and further improving the dimensional qualification rate of the vehicle part output.

[0064] Step S106: Based on the first constraint layout, the third constraint layout, and the fourth constraint layout for assembling with the inspection fixture, perform springback detection on the digital model of the vehicle part after springback compensation respectively to obtain the second springback data, the third springback data, and the fourth springback data of the digital model of the vehicle part after springback compensation respectively.

[0065] Through the simulation analysis of the compensation effect after compensation, not only the state on the inspection fixture can be confirmed, but also the state during the vehicle assembly can be confirmed, ensuring that the compensation is effective, and the springback detection results in the key matching areas where the inspection fixture and the vehicle are matched are all qualified, so as to solve the problem of compensation failure caused by unreliable springback compensation.

[0066] Step S107: If the second springback data, the third springback data, and the fourth springback data are all within the preset springback data range, output the digital model of the vehicle part after springback compensation, so that the production personnel can produce vehicle parts according to the digital model of the vehicle part after springback compensation.

[0067] If the second springback data, the third springback data, and the fourth springback data are all within the preset springback data range, it indicates that the springback detection results of the digital model of the vehicle part after compensation are all qualified during the inspection fixture and vehicle assembly, and the processing and production of the physical vehicle part number can be carried out.

[0068] The embodiment of the present application provides a method for manufacturing a digital model of a vehicle part. Through this method, the effectiveness of springback compensation can be ensured, the compensation efficiency is improved, so as to avoid the situation that the springback detection on the inspection fixture is qualified while the springback detection during vehicle assembly is unqualified, and further shorten the research and development cycle of vehicle parts.

[0069] As an optional implementation manner, such as Figure 11As shown, the method for manufacturing the digital model of vehicle parts further includes step S108:

[0070] Step S108: If any one of the second springback data, the third springback data, and the fourth springback data is not within the preset springback data range, then repeat the step of performing springback detection on the digital model of vehicle parts based on the third constraint layout to obtain the first springback data of the digital model of vehicle parts.

[0071] If any one of the second springback data, the third springback data, and the fourth springback data is not within the preset springback data range, it indicates that the requirement of passing the springback detection during both fixture inspection and vehicle assembly cannot be met. Therefore, springback compensation needs to be performed, and then springback detection is carried out until the second springback data, the third springback data, and the fourth springback data are all within the springback data range, that is, the springback detection during both fixture inspection and vehicle assembly is qualified. At this time, the digital model of vehicle parts after springback compensation is the outputtable solution, so that production personnel can produce vehicle parts according to the digital model of vehicle parts after springback compensation.

[0072] It should be understood that although Figure 1 and Figure 6 the steps in the flowcharts in Figure 1 and Figure 6 are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, Figure 1 and Figure 6 at least a part of the steps in

[0073] can include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of the steps or stages in other steps or other steps.

[0073] It can be understood that the same / similar parts among the various embodiments of the above methods in this specification can be referred to each other. Each embodiment focuses on the differences from other embodiments. For the relevant parts, refer to the descriptions of other method embodiments.

[0074] Based on the same inventive concept, as Figure 12As shown in the figure, an apparatus for manufacturing a digital mock-up of a vehicle component is provided in an embodiment of the present application, which mainly includes: a modification module 201, a first detection module 202, a screening module 203, a second detection module 204, a compensation module 205, a third detection module 206, and an output module 207. The modification module 201 is configured to modify a first constraint layout for assembling with a vehicle body of the digital mock-up of the vehicle component to obtain a second constraint layout; the first detection module 202 is configured to perform a springback detection on the digital mock-up of the vehicle component based on the second constraint layout to obtain the clamping force of each constraint point in the second constraint layout; the screening module 203 is configured to screen the second constraint layout according to the clamping force of each constraint point in the second constraint layout to obtain a third constraint layout; the second detection module 204 is configured to perform a springback detection on the digital mock-up of the vehicle component based on the third constraint layout to obtain first springback data of the digital mock-up of the vehicle component; the compensation module 205 is configured to perform springback compensation on the digital mock-up of the vehicle component according to the first springback data to obtain the digital mock-up of the vehicle component after springback compensation; the third detection module 206 is configured to perform springback detections on the digital mock-up of the vehicle component after springback compensation based on the first constraint layout, the third constraint layout, and a fourth constraint layout for assembling with a jig, respectively, to obtain second springback data, third springback data, and fourth springback data of the digital mock-up of the vehicle component after springback compensation; the output module 207 is configured to output the digital mock-up of the vehicle component after springback compensation if the second springback data, the third springback data, and the fourth springback data are all within a preset springback data range, so that production personnel can produce vehicle components according to the digital mock-up of the vehicle component after springback compensation.

[0075] An embodiment of the present application provides an apparatus for manufacturing a digital mock-up of a vehicle component. Through this apparatus, effective springback compensation can be ensured, the compensation efficiency is improved, and the digital mock-up of the vehicle component obtained can avoid the situation where the springback detection on the jig is qualified, but the springback detection during vehicle body assembly is unqualified, thereby shortening the R & D cycle of vehicle components.

[0076] As an optional implementation manner, the modification module 201 is specifically configured to: move the constraint points in the first constraint layout that are located in the non-visible area of the vehicle body appearance along the shortest moving distance to the visible area of the vehicle body appearance to obtain the second constraint layout.

[0077] As an optional implementation manner, the modification module 201 is specifically configured to: move the constraint points in the first constraint layout that are located in the non-visible area of the vehicle body appearance along the shortest moving distance to the visible area of the vehicle body appearance, and add the constraint points in the non-critical main model area of the fourth constraint layout to the first constraint layout to obtain the second constraint layout.

[0078] As an optional implementation manner, the screening module 203 is specifically configured to: remove the constraint points in the second constraint layout whose clamping force is greater than a preset clamping force threshold to obtain the third constraint layout.

[0079] As an optional implementation manner, the manufacturing device for the digital model of vehicle parts further includes a repeated execution module, which is configured to, if any one of the second springback data, the third springback data, and the fourth springback data is not within a preset range of springback data, repeatedly execute the step of performing springback detection on the digital model of vehicle parts based on the third constraint layout to obtain the first springback data of the digital model of vehicle parts.

[0080] For the specific limitations on the manufacturing device for the digital model of vehicle parts, reference may be made to the limitations on the manufacturing method for the digital model of vehicle parts in the foregoing text, which will not be elaborated herein. Each module in the above-mentioned manufacturing device for the digital model of vehicle parts can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in the processor in the computer device in the form of hardware or be independent of the processor, or can be stored in the memory in the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above-mentioned modules.

[0081] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, article or device comprising the element.

[0082] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the related parts, reference can be made to the partial description of the method embodiment.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A method for manufacturing a digital model of a vehicle component, characterized in that, it includes: Modifying a first constraint layout of the digital model of the vehicle component for assembling with the whole vehicle to obtain a second constraint layout; Based on the second constraint layout, performing a springback detection on the digital model of the vehicle component to obtain the clamping forces of the constraint points in the second constraint layout; According to the clamping forces of the constraint points in the second constraint layout, screening the second constraint layout to obtain a third constraint layout; Based on the third constraint layout, performing a springback detection on the digital model of the vehicle component to obtain the first springback data of the digital model of the vehicle component; According to the first springback data, performing a springback compensation on the digital model of the vehicle component to obtain a digital model of the vehicle component after springback compensation; Based on the first constraint layout, the third constraint layout and a fourth constraint layout for assembling with a jig, respectively performing a springback detection on the digital model of the vehicle component after springback compensation to respectively obtain the second springback data, the third springback data and the fourth springback data of the digital model of the vehicle component after springback compensation; If the second springback data, the third springback data and the fourth springback data are all within a preset springback data range, outputting the digital model of the vehicle component after springback compensation so that production personnel can produce vehicle components according to the digital model of the vehicle component after springback compensation; The step of modifying a first constraint layout of the digital model of the vehicle component for assembling with the whole vehicle to obtain a second constraint layout includes: moving the constraint points in the first constraint layout located in the non-visible area of the whole vehicle appearance along the shortest moving distance to the visible area of the whole vehicle appearance to obtain a second constraint layout; The step of modifying a first constraint layout of the digital model of the vehicle component for assembling with the whole vehicle to obtain a second constraint layout includes: moving the constraint points in the first constraint layout located in the non-visible area of the whole vehicle appearance along the shortest moving distance to the visible area of the whole vehicle appearance, and adding the constraint points in the non-critical main type area of the fourth constraint layout to the first constraint layout to obtain a second constraint layout; The springback data includes the clamping forces corresponding to the constraint points. The step of screening the second constraint layout according to the clamping forces of the constraint points in the second constraint layout to obtain a third constraint layout includes: removing the constraint points in the second constraint layout with clamping forces greater than a preset clamping force threshold to obtain a third constraint layout.

2. The method for manufacturing a digital model of a vehicle component according to claim 1, characterized in that, the method further includes: If any one of the second springback data, the third springback data and the fourth springback data is not within the preset springback data range, repeating the step of performing a springback detection on the digital model of the vehicle component based on the third constraint layout to obtain the first springback data of the digital model of the vehicle component.

3. A device for manufacturing a digital model of a vehicle component, characterized in that, it includes: A modification module (201) for modifying a first constraint layout of the digital model of the vehicle component for assembling with the whole vehicle to obtain a second constraint layout; The first detection module (202) is configured to perform springback detection on the digital model of the vehicle component based on the second constraint layout, and obtain the clamping force of each constraint point in the second constraint layout; The screening module (203) is configured to screen the second constraint layout according to the clamping force of each constraint point in the second constraint layout, and obtain a third constraint layout; The second detection module (204) is configured to perform springback detection on the digital model of the vehicle component based on the third constraint layout, and obtain the first springback data of the digital model of the vehicle component; The compensation module (205) is configured to perform springback compensation on the digital model of the vehicle component according to the first springback data, and obtain the digital model of the vehicle component after springback compensation; The third detection module (206) is configured to perform springback detection on the digital model of the vehicle component after springback compensation based on the first constraint layout, the third constraint layout, and a fourth constraint layout for assembling with the inspection fixture, and respectively obtain the second springback data, the third springback data, and the fourth springback data of the digital model of the vehicle component after springback compensation; The output module (207) is configured to, if the second springback data, the third springback data, and the fourth springback data are all within a preset springback data range, output the digital model of the vehicle component after springback compensation, so that production personnel can produce vehicle components according to the digital model of the vehicle component after springback compensation; The modification module (201) is specifically configured to: move the constraint points in the first constraint layout that are located in the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance, to obtain a second constraint layout; The modification module (201) is specifically configured to: move the constraint points in the first constraint layout that are located in the non-visible area of the vehicle's overall appearance along the shortest moving distance to the visible area of the vehicle's overall appearance, and add the constraint points in the non-critical main type area of the fourth constraint layout to the first constraint layout, to obtain a second constraint layout; The screening module (203) is specifically configured to: Remove the constraint points in the second constraint layout whose clamping force is greater than a preset clamping force threshold, to obtain a third constraint layout.

4. The manufacturing device for the digital model of the vehicle component according to claim 3, wherein, The device further includes: A repeated execution module, configured to, if any of the second springback data, the third springback data, and the fourth springback data is not within a preset springback data range, repeatedly execute the step of performing springback detection on the digital model of the vehicle component based on the third constraint layout to obtain the first springback data of the digital model of the vehicle component.

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