CN115014733A - Method and device for manufacturing digital model of vehicle part - Google Patents

Abstract

The application relates to a method and a device for manufacturing a digital model of a vehicle part. The method comprises the following steps: modifying a first constraint layout for assembling with a finished automobile to obtain a second constraint layout, carrying out springback detection on a vehicle part digital model to obtain clamping force of each constraint point in the second constraint layout, screening the second constraint layout to obtain a third constraint layout, carrying out springback detection on the vehicle part digital model to obtain first springback data, and carrying out springback compensation on the vehicle part digital model; and respectively carrying out springback detection on the vehicle part digital analogy after springback compensation based on the first constraint layout, the third constraint layout and a fourth constraint layout used for assembling with the checking fixture, and outputting the vehicle part digital analogy after springback compensation if the correspondingly obtained springback data are all located in a preset springback data range. And the digital analogy of the vehicle parts qualified in rebound detection during the assembly of the checking fixture and the whole vehicle can be obtained more easily.

Description

Method and device for making digital model of vehicle parts

technical field

The present application relates to the technical field of vehicle parts processing, and in particular, to a method and device for manufacturing a digital model of vehicle parts.

Background technique

The springback is caused by the recovery of elastic deformation in the components after the external force is unloaded. The springback will cause the size of the components to be unqualified, and the springback of the vehicle components will reduce the quality of the vehicle assembly. Usually, before processing vehicle parts, springback detection is performed on the digital model of vehicle parts through simulation technology according to the constraint layout of the inspection tool, and springback compensation is performed according to the detection results.

However, due to the different constraint layout of the inspection tool and the whole vehicle assembly, it is difficult to obtain the springback test results of the inspection tool and the whole vehicle assembly from the digital model of the vehicle parts obtained by simulation technology.

SUMMARY OF THE INVENTION

Aiming at the shortcomings of the existing methods, the present application provides a method and device for making a digital model of vehicle parts, so as to solve the problem in the prior art that it is difficult to obtain vehicle parts with qualified springback detection results when the inspection tool and the whole vehicle are assembled. Technical issues with component digitization.

In a first aspect, an embodiment of the present application provides a method for manufacturing a digital model of a vehicle part, including: modifying a first constraint layout of the digital model of the vehicle part used for assembling with a complete vehicle to obtain a second constraint layout ; Based on the second constraint layout, perform springback detection on the digital model of the vehicle parts to obtain the clamping force of each constraint point in the second constraint layout; Clamping force, screen the second constraint layout to obtain a third constraint layout; based on the third constraint layout, perform springback detection on the digital model of the vehicle parts, and obtain the digital model of the vehicle parts. the first springback data; according to the first springback data, perform springback compensation on the digital model of the vehicle parts to obtain the digital model of the vehicle parts after springback compensation; based on the first constraint layout, the The third constraint layout and the fourth constraint layout used for assembling with the inspection tool respectively perform springback detection on the digital models of the vehicle parts after springback compensation, and obtain the digital models of the vehicle parts after springback compensation respectively. the second rebound data, the third rebound data and the fourth rebound data; if the second rebound data, the third rebound data and the fourth rebound data are all within the preset rebound data Within the data range, the digital model of the vehicle parts after springback compensation is output, so that the production personnel can produce vehicle parts according to the digital model of the vehicle parts after springback compensation.

As an optional implementation manner, the modifying the first constraint layout of the digital model of the vehicle parts used for assembling with the whole vehicle to obtain the second constraint layout includes: arranging the first constraint layout in the non- The constraint points in the visible area of the entire vehicle appearance are moved along the shortest moving distance to the visible area of the entire vehicle appearance to obtain the second constraint layout.

As an optional implementation manner, the modifying the first constraint layout of the digital model of the vehicle parts used for assembling with the whole vehicle to obtain the second constraint layout includes: arranging the first constraint layout in the non- The constraint points in the visible area of the entire vehicle appearance are moved to the visible area of the entire vehicle appearance along the shortest moving distance, and the constraint points in the non-critical main type area in the fourth constraint layout are added to the first constraint layout , to get the second constraint layout.

As an optional implementation manner, the springback data includes the clamping force corresponding to the constraint point, and the second constraint layout is screened according to the clamping force of each constraint point in the second constraint layout to obtain The third constraint layout includes: removing constraint points whose clamping force is greater than a preset clamping force threshold in the second constraint layout to obtain a third constraint layout.

As an optional implementation manner, the method further includes: if any rebound data among the second rebound data, the third rebound data and the fourth rebound data is not within a preset value Within the range of the springback data, the step of performing springback detection on the digital model of the vehicle part based on the third constraint layout is repeated to obtain the first springback data of the digital model of the vehicle part.

In a second aspect, an embodiment of the present application provides an apparatus for making a digital model of a vehicle part, including: a modification module for modifying a first constraint layout of the digital model of the vehicle part for assembling with a complete vehicle , obtain the second constraint layout; the first detection module is used to perform springback detection on the digital model of the vehicle parts based on the second constraint layout, and obtain the clamping force of each constraint point in the second constraint layout The screening module is used 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 is used to screen the second constraint layout based on the third constraint layout Constraining the layout, performing springback detection on the digital model of the vehicle parts, and obtaining the first springback data of the vehicle parts digital model; the compensation module is used for zeroing the vehicle according to the first springback data. The component digital model performs springback compensation to obtain the springback compensated vehicle component digital model; the third detection module is used for the first constraint layout, the third constraint layout, and the first constraint layout for assembling with the inspection tool. Four-constraint layout, respectively perform springback detection on the digital model of the vehicle parts after springback compensation, and obtain the second rebound data, third rebound data and fourth rebound data; an output module for outputting the second rebound data, the third rebound data and the fourth rebound data if all of the second rebound data are within a preset rebound data range The digital model of the vehicle parts after springback compensation, so that the production personnel can produce the vehicle parts according to the digital model of the vehicle parts after the springback compensation.

As an optional implementation manner, the modification module is specifically configured to: move the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the appearance of the entire vehicle along the shortest moving distance, to obtain Second constraint layout.

As an optional implementation manner, the modification module is specifically configured to: move the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the appearance of the entire vehicle along the shortest moving distance, and A second constraint layout is obtained by adding the constraint points in the non-critical main type area in the fourth constraint layout to the first constraint layout.

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

As an optional implementation manner, the apparatus further includes: a repetitive execution module, configured to rebound if any one of the second rebound data, the third rebound data, and the fourth rebound data rebounds If the data is not within the preset rebound data range, then repeat the third constraint layout to perform rebound detection on the digital model of the vehicle parts to obtain the first rebound data of the vehicle parts digital model. A step of.

The present application provides a method and device for making a digital model of vehicle parts, and the technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

The second constraint layout is obtained by modifying the first constraint layout of the digital model of the vehicle parts for assembling with the whole vehicle. , remove the constraint points that do not meet the preload requirements to obtain a third constraint layout with a more reasonable layout, determine the constraint layout of the digital model of the vehicle parts, and then perform the springback detection on the digital model of the vehicle parts, and according to the obtained The first springback data of the digital model of the vehicle parts is used to perform springback compensation on the digital model of the vehicle parts, and the digital model of the vehicle parts after springback compensation is obtained to ensure that the springback compensation is effective and improve the compensation efficiency. The restraint layout, the third restraint layout and the fourth restraint layout used for assembling with the inspection tool, respectively perform springback detection on the digital model of the vehicle parts after springback compensation, and obtain the digital model of the vehicle parts after springback compensation respectively. The second rebound data, the third rebound data and the fourth rebound data; if the second rebound data, the third rebound data and the fourth rebound data are all within the preset rebound data range, the output Digital model of vehicle parts after springback compensation, so that production personnel can produce vehicle parts according to the digital model of vehicle parts after springback compensation. In this way, it can avoid the situation that the springback test on the inspection tool is qualified, but the springback test is not qualified when the whole vehicle is assembled, and the development cycle of vehicle parts is further shortened.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not limiting of the present application.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic flowchart of a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application;

2 is a schematic diagram of a first constraint layout in a method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application;

3 is a schematic diagram of a fourth constraint layout in a method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application;

4 is a schematic diagram of a third constraint layout in a method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application;

5 is a schematic diagram of springback data before compensation of a third constraint layout in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application;

6 is a schematic diagram of springback data after compensation of the third constraint layout in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application;

7 is a schematic diagram of springback data before the fourth constraint layout compensation in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application;

8 is a schematic diagram of springback data after compensation of the fourth constraint layout in a method for manufacturing a digital model of a vehicle part provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of springback data before first constraint layout compensation in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application;

10 is a schematic diagram of springback data after compensation of the first constraint layout in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the application;

11 is a schematic flowchart of a method for manufacturing a digital model of a vehicle part provided by another embodiment of the application;

FIG. 12 is a schematic diagram of a frame structure of an apparatus for manufacturing a digital model of a vehicle part according to an embodiment of the application.

Reference signs and corresponding descriptions:

201: Modify the module;

202: a first detection module;

203: screening module;

204: a second detection module;

205: compensation module;

206: the third detection module;

207: Output module.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further 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, but not to limit the present application.

First of all, some terms involved in this application are introduced and explained:

GD&T: Abbreviation for Geometric Dimensioning and Tolerancing, meaning geometric dimensions and tolerances. Any part is composed of points, lines, and surfaces, and these points, lines, and surfaces are called elements. The actual elements of the machined parts always have errors relative to the ideal elements, including shape errors and position errors. This type of error affects the function of mechanical products, and the corresponding tolerances should be specified in the design and marked on the drawings according to the specified standard symbols.

AutoForm: A panel forming simulation software for car body development and mold making.

An embodiment of the present application provides a method for manufacturing a digital model of a vehicle part. As shown in FIG. 1 , the method for manufacturing a digital model of a vehicle part mainly includes steps S101-S107:

Step S101 : modifying the first constraint layout of the digital model of the vehicle parts for assembling with the whole vehicle to obtain the second constraint layout.

The constraint layout in the embodiment of the present application includes the positional distribution of constraint points on the digital model of vehicle parts, and the connection mode between constraint points and the inspection tool and/or the whole vehicle during assembly. The connection mode may include positioning pin connection, support connection and For the clamping connection, correspondingly, the restraint point connected by the positioning pin is the positioning point, the restraint point connected by the support is the support point, and the restraint point connected by the clamping is the clamping point. The first constraint layout for assembling with the whole vehicle and the fourth constraint layout for assembling with the inspection tool can be obtained through GD&T (Geometric Dimensioning and Tolerancing) drawings, and the GD&T drawings can be produced by dimension engineers.

As an optional implementation manner, in step S101, the first constraint layout of the digital model of the vehicle parts for assembling with the whole vehicle is modified to obtain a second constraint layout, including:

A second constraint layout is obtained by moving the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the entire vehicle appearance along the shortest moving distance.

The digital model of vehicle parts includes the visible area of the entire vehicle appearance and the visible area of the non-complete vehicle appearance. The visible area of the non-vehicle appearance is the structural surface of the vehicle parts, that is, the profile formed by shaping or flanging. The constraint points located in the visible area of the non-vehicle appearance in the first constraint layout can be moved to the visible area of the vehicle appearance, and the distance from the position before the movement cannot be too far, so as to reduce the digital model of the vehicle parts and the actual vehicle parts. Differences in constraint layout.

In some possible embodiments, the first constraint layout is shown in FIG. 2 , and the third constraint layout is shown in FIG. 4 . In FIG. 2 , A4 , A5 , positioning hole 1 , positioning hole 2 , A10 , E1 , E2 , E3 , A1', A9' and A8 are all constraint points, among which, A4, A5 and A9' are in the visible area of non-vehicle appearance. In Fig. 4, A4', A5' and A9" are the constraint points located in the visible area of the non-vehicle appearance in the first constraint layout, and move along the shortest moving distance to the restraint points in the visible area of the entire vehicle appearance.

As an optional implementation manner, in step S101, the first constraint layout of the digital model of the vehicle parts for assembling with the whole vehicle is modified to obtain a second constraint layout, including:

Move the constraint points located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the entire vehicle appearance along the shortest moving distance, and add the constraint points in the non-critical main area in the fourth constraint layout to the In a constraint layout, a second constraint layout is obtained.

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 with the inspection tool during assembly, therefore, In order to ensure that the springback detection when assembling with the inspection tool and the whole vehicle is qualified at the same time, after the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout is moved along the shortest moving distance to the visible area of the vehicle appearance, The constraint points in the non-critical main area, that is, the constraint points in the non-matching area during vehicle assembly, are added to the first constraint layout, thereby obtaining a more reasonable constraint layout and improving the accuracy of subsequent springback compensation. rate and efficiency.

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

Step S102 : based on the second constraint layout, perform springback detection on the digital model of the vehicle parts to obtain the clamping force of each constraint point in the second constraint layout.

The digital model of vehicle parts can be input into AutoForm for springback detection for simulation detection, and the clamping force of each constraint point in the second constraint layout can be obtained.

Step S103: 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.

As an optional implementation manner, the springback data in S103 includes the clamping force corresponding to the constraint point, and according to the clamping force of each constraint point in the second constraint layout, the second constraint layout is screened to obtain the third constraint layout ,include:

A third constraint layout is obtained by removing constraint points in the second constraint layout where the clamping force is greater than the preset clamping force threshold.

When assembling with the inspection tool and the whole vehicle, the binding force between the clamping point and the vehicle parts is the most significant, and the resulting springback is also the largest. Therefore, in order to improve the efficiency and accuracy of the elastic force compensation, the clamping force can be higher than the preset value. Constraint point removal for clamping force threshold.

Step S104: Based on the third constraint layout, perform springback detection on the digital model of the vehicle parts, and obtain first springback data of the digital model of the vehicle parts.

As shown in FIGS. 5-10 , FIG. 5 is a schematic diagram of springback data before the compensation of the third constraint layout in a method for manufacturing a digital model of vehicle parts provided by an embodiment of the application; A schematic diagram of rebound data after compensation of the third constraint layout in a method for manufacturing a digital model of a vehicle part Schematic diagram of rebound data; FIG. 8 is a schematic diagram of rebound data after compensation of the fourth constraint layout in a method for making a digital model of a vehicle part provided by an embodiment of the application; FIG. 9 is a vehicle part provided by an embodiment of the application Figure 10 is a schematic diagram of springback data after compensation of the first constraint layout in a method for manufacturing a digital model of a vehicle part provided in an embodiment of the present application; The positive and negative values in Figure 5-10 represent the amount of rebound, where positive values represent the effect and the protruding value that can be convex, and negative values represent the effect and the concave value that can be concave.

Step S105: According to the first springback data, springback compensation is performed on the digital model of the vehicle parts, and the digital model of the vehicle parts after springback compensation is obtained.

Through the above steps, a reliable constraint layout can be obtained, and a reliable constraint layout can obtain an accurate springback amount, which makes the springback amount compensation more reliable, avoids invalid compensation, improves the compensation success rate, and further improves the size of the vehicle parts. Rate.

Step S106: Based on the first constraint layout, the third constraint layout, and the fourth constraint layout for assembling with the inspection tool, respectively perform springback detection on the digital model of the vehicle parts after springback compensation, and obtain respectively the springback compensation. The second springback data, the third springback data and the fourth springback data of the digital model of the vehicle parts.

Through the simulation analysis of the compensation effect after compensation, not only the state on the inspection tool, but also the state of the whole vehicle can be confirmed, so as to ensure that the compensation is effective, and the springback detection results of the key matching area of the inspection tool and the vehicle are all Qualified to solve the problem of compensation failure due to unreliable springback compensation.

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

If the second rebound data, the third rebound data and the fourth rebound data are all within the preset rebound data range, it indicates the rebound of the compensated vehicle parts digital model during the inspection tool and the whole vehicle assembly. The test results are all qualified, and the processing and production of the number of physical vehicle parts can be carried out.

The embodiment of the present application provides a method for manufacturing a digital model of a vehicle part, through which the springback compensation can be ensured effectively, and the compensation efficiency can be improved, so as to avoid the occurrence of qualified springback detection on the inspection tool, and when the whole vehicle is assembled The failure of the springback test will shorten the development cycle of vehicle parts.

As an optional embodiment, as shown in FIG. 11 , the manufacturing method of the digital model of vehicle parts further includes step S108:

Step S108: If any rebound data among the second rebound data, the third rebound data and the fourth rebound data is not within the preset rebound data range, repeat the layout based on the third constraint to zero the vehicle The step of performing springback detection on the component digital model to obtain the first springback data of the vehicle component digital model.

If any of the second rebound data, the third rebound data and the fourth rebound data is not within the preset rebound data range, it means that the springback detection in the inspection tool and vehicle assembly cannot be satisfied. Therefore, it is necessary to perform rebound compensation, and then perform rebound detection until the second rebound data, the third rebound data and the fourth rebound data are all within the rebound data range, that is, in the inspection tool The springback test is qualified when assembling the whole vehicle. At this time, the digital model of the vehicle parts after springback compensation is an exportable solution, so that the production personnel can produce vehicle parts according to the digital model of the vehicle parts after springback compensation.

It should be understood that, although the steps in the flowcharts in FIG. 1 and FIG. 6 are shown in sequence according to the arrows, these steps are not necessarily executed in the sequence shown by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order, and these steps may be performed in other orders. Moreover, at least a part of the steps in FIG. 1 and FIG. 6 may include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but may be executed at different times. The order of execution is also not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages within the other steps.

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, and each embodiment focuses on the points that are different from other embodiments, and for related parts, refer to other method embodiments description can be used.

Based on the same inventive concept, as shown in FIG. 12 , an embodiment of the present application provides an apparatus for making a digital model of vehicle parts, which mainly includes: a modification module 201 , a first detection module 202 , a screening module 203 , and a second detection module 204 , a compensation module 205 , a third detection module 206 and an output module 207 . The modification module 201 is used for modifying the first constraint layout of the digital model of the vehicle parts used for assembling with the whole vehicle to obtain the second constraint layout; the first detection module 202 is used for determining the number of vehicle parts based on the second constraint layout. The mold performs springback detection to obtain the clamping force of each restraint point in the second restraint layout; the screening module 203 is used for screening the second restraint layout according to the clamping force of each restraint point in the second restraint layout to obtain the third restraint layout. Constraint layout; the second detection module 204 is used to perform springback detection on the digital model of vehicle parts based on the third constraint layout, and obtain the first springback data of the digital model of the vehicle parts; the compensation module 205 is used for the first springback Data, springback compensation is performed on the digital model of the vehicle parts, and the digital model of the vehicle parts after springback compensation is obtained; the third detection module 206 is used for the layout based on the first constraint, the layout of the third constraint, and the test tool for assembling with the inspection tool. The fourth constraint layout is to perform springback detection on the digital model of the vehicle parts after springback compensation respectively, and obtain the second rebound data, the third rebound data and the fourth time of the digital model of the vehicle parts after springback compensation respectively. rebound data; the output module 207 is used to output the digital-analog of the vehicle parts after rebound compensation if the second rebound data, the third rebound data and the fourth rebound data are all within the preset rebound data range, In order to enable the production personnel to produce vehicle parts according to the digital model of the vehicle parts after springback compensation.

The embodiment of the present application provides a manufacturing device for the digital model of vehicle parts, through which the springback compensation can be ensured effectively, the compensation efficiency is improved, and the obtained digital model of the vehicle parts can avoid the occurrence of qualified springback detection on the inspection tool , and in the case of unqualified rebound detection during vehicle assembly, thereby shortening the research and development cycle of vehicle parts.

As an optional implementation manner, the modification module 201 is specifically configured to: move the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the appearance of the entire vehicle along the shortest moving distance to obtain the second constraint layout.

As an optional implementation manner, the modification module 201 is specifically configured to: move the constraint point located in the visible area of the non-vehicle appearance in the first constraint layout to the visible area of the entire vehicle appearance along the shortest moving distance, and move the fourth The constraint points in the non-critical main type area in the constraint layout are added to the first constraint layout to obtain the second constraint layout.

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

As an optional implementation manner, the apparatus for making a digital model of a vehicle part further includes a repetitive execution module, the repetitive execution module is used for if any one of the second springback data, the third springback data and the fourth springback data If the springback data is not within the preset springback data range, the steps of performing springback detection on the digital model of the vehicle parts based on the third constraint layout are repeated to obtain the first springback data of the digital model of the vehicle parts.

For the specific limitation of the device for making a digital model of a vehicle part, please refer to the limitation on a method for making a digital model of a vehicle part above, which will not be repeated here. All or part of the modules in the above-mentioned apparatus for making a digital model of a vehicle component can be implemented by software, hardware, and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

It should be noted that, in this document, 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 relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. A method for manufacturing a vehicle part digital model is characterized by comprising the following steps:

modifying a first constraint layout of a vehicle part digital model for assembling with a whole vehicle to obtain a second constraint layout;

based on the second constraint layout, carrying out rebound detection on the vehicle part digital model to obtain the clamping force of each constraint point in the second constraint layout;

screening the second constraint layout according to the clamping force of each constraint point in the second constraint layout to obtain a third constraint layout;

based on the third constraint layout, carrying out rebound detection on the vehicle part digital model to obtain first rebound data of the vehicle part digital model;

according to the first rebound data, performing rebound compensation on the vehicle part digital model to obtain a vehicle part digital model after the rebound compensation;

based on the first constraint layout, the third constraint layout and a fourth constraint layout used for assembling with a checking fixture, respectively carrying out rebound detection on the vehicle part digital model after the rebound compensation, and respectively obtaining second rebound data, third rebound data and fourth rebound data of the vehicle part digital model after the rebound compensation;

and if the second resilience data, the third resilience data and the fourth resilience data are all located in a preset resilience data range, outputting the resilience-compensated vehicle part digital model so that a producer can produce the vehicle part according to the resilience-compensated vehicle part digital model.

2. The method for manufacturing the vehicle component digital-analog according to claim 1, wherein the modifying the first constraint layout of the vehicle component digital-analog for assembling with the whole vehicle to obtain the second constraint layout comprises:

and moving the constraint points in the first constraint layout, which are located in the non-whole vehicle appearance visible area, to the whole vehicle appearance visible area along the shortest moving distance to obtain a second constraint layout.

3. The method for manufacturing the vehicle component digital-analog according to claim 1, wherein the modifying the first constraint layout of the vehicle component digital-analog for assembling with the whole vehicle to obtain the second constraint layout comprises:

and moving the constraint points in the non-whole vehicle appearance visible region in the first constraint layout to the whole vehicle appearance visible region along the shortest moving distance, and adding the constraint points in the non-key main type region in the fourth constraint layout to the first constraint layout to obtain a second constraint layout.

4. The method for manufacturing the vehicle part digital analogy according to claim 1, wherein the springback data includes clamping forces corresponding to constraint points, and the second constraint layout is screened according to the clamping forces of the constraint points in the second constraint layout to obtain a third constraint layout, including:

and removing the constraint points of which the clamping force is greater than a preset clamping force threshold value in the second constraint layout to obtain a third constraint layout.

5. The method for manufacturing the vehicle part digital model according to claim 1, characterized in that the method further comprises:

and if any one of the second resilience data, the third resilience data and the fourth resilience data is not in a preset resilience data range, repeatedly executing the step of carrying out resilience detection on the vehicle part digifax based on the third constraint layout to obtain the first resilience data of the vehicle part digifax.

6. A device for manufacturing a vehicle part digital model is characterized by comprising:

the system comprises a modification module (201) for modifying a first constraint layout of a vehicle part digital model for assembling with a whole vehicle to obtain a second constraint layout;

the first detection module (202) is used for carrying out resilience detection on the vehicle part digital model 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 used for screening 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 (204) for performing resilience detection on the vehicle component digital model based on the third constraint layout to obtain first resilience data of the vehicle component digital model;

the compensation module (205) is used for performing rebound compensation on the vehicle part digital model according to the first rebound data to obtain a vehicle part digital model after the rebound compensation;

a third detection module (206) for performing rebound detection on the vehicle component digital analogy after the rebound compensation based on the first constraint layout, the third constraint layout and a fourth constraint layout for assembling with a gauge, and obtaining second rebound data, third rebound data and fourth rebound data of the vehicle component digital analogy after the rebound compensation respectively;

and the output module (207) is used for outputting the vehicle part digital model after the springback compensation if the second springback data, the third springback data and the fourth springback data are all located in a preset springback data range, so that a producer can produce the vehicle part according to the vehicle part digital model after the springback compensation.

7. The apparatus for creating the vehicle component digital model as claimed in claim 6, wherein the modifying module (201) is specifically configured to:

and moving the constraint points in the first constraint layout, which are located in the non-whole vehicle appearance visible area, to the whole vehicle appearance visible area along the shortest moving distance to obtain a second constraint layout.

8. The apparatus for creating the vehicle component digital model as claimed in claim 6, wherein the modifying module (201) is specifically configured to:

and moving the constraint points in the non-whole vehicle appearance visible region in the first constraint layout to the whole vehicle appearance visible region along the shortest moving distance, and adding the constraint points in the non-key main type region in the fourth constraint layout to the first constraint layout to obtain a second constraint layout.

9. The device for manufacturing the vehicle component digital model according to claim 6, wherein the screening module (203) is specifically configured to:

and removing the constraint points of which the clamping force is greater than a preset clamping force threshold value in the second constraint layout to obtain a third constraint layout.

10. The apparatus for creating the vehicle component digital model according to claim 6, further comprising:

and the repeated execution module is used for repeatedly executing the step of performing rebound detection on the vehicle part digital analogy based on the third constraint layout to obtain first rebound data of the vehicle part digital analogy if any rebound data in the second rebound data, the third rebound data and the fourth rebound data is not within a preset rebound data range.

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