CN106446475B - Method and device for extracting welding spot information of white body of vehicle - Google Patents
Method and device for extracting welding spot information of white body of vehicle Download PDFInfo
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- CN106446475B CN106446475B CN201611043005.8A CN201611043005A CN106446475B CN 106446475 B CN106446475 B CN 106446475B CN 201611043005 A CN201611043005 A CN 201611043005A CN 106446475 B CN106446475 B CN 106446475B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
Abstract
A method and a device for extracting welding spot information of a vehicle body-in-white are disclosed, wherein the method in one embodiment comprises the following steps: extracting welding spot information of each welding spot in a 3D digital analog of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center; according to the spherical characteristic body of each welding spot, performing spherical interference processing on each welding spot and each part in the 3D digital analog of the vehicle to obtain the part number of each initial part possibly connected with each welding spot; according to the welding spot number of each welding spot, the part number of the initial part corresponding to each welding spot and the hierarchical relation of the structure tree in the 3D digital analogy of the vehicle, the actual connecting part of each welding spot is screened out from the initial part corresponding to each welding spot; and deriving part information of the actual connecting parts of all welding points from the 3D digital analogy of the vehicle, wherein the part information comprises part names, part materials and part plate thicknesses. The embodiment of the invention has strong pertinence and high accuracy, can conveniently and effectively manage and control the welding spot information and change the management, and realizes the seamless connection of the design and manufacture information.
Description
Technical Field
The invention relates to the field of vehicle technology, in particular to a method and a device for extracting welding spot information of a vehicle body-in-white.
Background
Along with the increasing popularization of vehicles, the competition of the automobile industry is also intensified, the overall development period of products from design to trial production and mass production is shorter and shorter, and how to efficiently and accurately realize seamless connection from the products to the production becomes an important work content of process development. At present, the main connection mode of the white automobile body of the automobile is spot welding, and the management of welding spot information (including serial numbers, names of connected parts, materials, plate thickness and the like) in a welding workshop is the basis of process planning, welding parameter debugging management and field process documentation. In the process of designing an actual product to a production process, welding spot information is input to a production department as a part of a 3D digital model; as the number of welding spots in white is as high as 4000-5000, the manual welding spot information extraction work is complicated, the time consumption is long, mistakes and omissions are easy to occur, effective management and control and change management are difficult to carry out in the subsequent process, and hidden dangers are buried for field process management and control and welding quality.
Disclosure of Invention
Based on this, the embodiment of the invention aims to provide a vehicle body-in-white welding spot information extraction method and a vehicle body-in-white welding spot information extraction device, which are highly targeted and highly accurate, can conveniently and effectively manage and control welding spot information and change management, and realize seamless connection of design and manufacturing information.
In order to achieve the purpose, the embodiment of the invention adopts the following technical scheme:
a method for extracting welding spot information of a vehicle body-in-white comprises the following steps:
extracting welding spot information of each welding spot in a 3D digital-to-analog model of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
according to the spherical characteristic body of each welding spot, performing spherical interference processing on each welding spot and each part in the 3D digital-to-analog of the vehicle to obtain part numbers of each initial part possibly connected with each welding spot;
screening actual connecting parts of the welding points from the initial parts corresponding to the welding points according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relation of a structure tree in the 3D digital analogy of the vehicle;
and deriving part information of the actually connected parts of each welding point from the vehicle 3D digital analogy, wherein the part information comprises part names, part materials and part plate thicknesses.
A vehicle body-in-white welding spot information extraction device includes:
the welding spot information extraction module is used for extracting welding spot information of each welding spot in the 3D digital analog of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
the spherical interference module is used for performing spherical interference processing on the welding spots and parts in the 3D digital analog of the vehicle according to the spherical characteristic bodies of the welding spots to obtain part numbers of initial parts possibly connected with the welding spots;
the part screening module is used for screening actual connecting parts of the welding points from the initial parts corresponding to the welding points according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relation of the structure tree in the 3D digital analogy of the vehicle;
and the part information acquisition module is used for deriving the part information of the actual connecting parts of the welding points from the vehicle 3D digital analogy, and the part information comprises part names, part materials and part plate thicknesses.
According to the scheme of the embodiment of the invention, the information of the part name, the part material, the part plate thickness and the like of the part is added into the 3D digital model of the vehicle, by extracting each welding spot in the 3D digital analog of the vehicle and carrying out spherical interference processing on the welding spot based on the spherical characteristic body of each welding spot, initial parts possibly connected with each welding point can be obtained, the initial parts are screened by combining the hierarchical relation of the structure tree in the 3D digifax of the vehicle, thereby determining the information of the parts actually connected by each welding point, deriving the information of the actually connected parts from the 3D digital analogy of the vehicle, and accordingly obtaining the correlation of the parts actually connected by each welding point in a targeted manner, the method has strong pertinence and high accuracy, can be convenient for effectively managing and controlling and changing the information of the welding spots, and realizes seamless connection of the information of design and manufacture.
Drawings
FIG. 1 is a flow diagram of a vehicle body-in-white weld point information extraction method in one embodiment;
FIG. 2 is a flowchart illustrating a method for extracting welding point information of a body-in-white of a vehicle according to another embodiment;
FIG. 3 is a flowchart illustrating a method for extracting welding point information of a body-in-white of a vehicle according to another embodiment;
FIG. 4 is a flowchart illustrating a method for extracting welding point information of a body-in-white of a vehicle according to a specific example;
FIG. 5 is a diagram illustrating a hierarchical structure tree of 3D digifax for a vehicle in an exemplary embodiment;
FIG. 6 is a schematic structural diagram of a vehicle body-in-white weld point information extraction device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In the synchronous development process of vehicle products, data technology and performance optimization are continuously updated, only a digital model and a structure tree are generally embodied in a 3D digital model of a vehicle, and part and plate information is stored in a BOM (Bill of Material) form. Therefore, in the process of process planning and welding parameter debugging, the information of parts and plates connected by 4000-5000 welding points at different welding levels needs to be extracted.
For 4000-5000 welding spots of a white automobile body, the information of parts and plates connected by each welding spot at different welding levels cannot be effectively extracted and output in batches, so that the workload is large and the accuracy is difficult to ensure; after data is frequently updated and optimized, great hidden danger exists in effective management of welding spot information. According to the embodiment of the invention, according to the structural relationship and the part information in the 3D digital analogy of the vehicle, the integration and the extraction of the information are realized by taking the welding points as nodes, the effective management is carried out, and the seamless connection of the design and the manufacture information is realized.
A flow chart of a vehicle body-in-white welding point information extraction method in one embodiment is shown in fig. 1. As shown in fig. 1, the method in this embodiment comprises the steps of:
step S101: extracting welding spot information of each welding spot in a 3D digital-to-analog model of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
step S102: according to the spherical characteristic body of each welding spot, performing spherical interference processing on each welding spot and each part in the 3D digital-to-analog of the vehicle to obtain part numbers of each initial part possibly connected with each welding spot;
step S103: screening actual connecting parts of the welding points from the initial parts corresponding to the welding points according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relation of a structure tree in the 3D digital analogy of the vehicle;
step S104: and deriving part information of the actually connected parts of each welding point from the vehicle 3D digital analogy, wherein the part information comprises part names, part materials and part plate thicknesses.
According to the scheme of the embodiment of the invention, the information of the part name, the part material, the part plate thickness and the like of the part is added into the 3D digital model of the vehicle, by extracting each welding spot in the 3D digital analog of the vehicle and carrying out spherical interference processing on the welding spot based on the spherical characteristic body of each welding spot, initial parts possibly connected with each welding point can be obtained, the initial parts are screened by combining the hierarchical relation of the structure tree in the 3D digifax of the vehicle, thereby determining the information of the parts actually connected by each welding point, deriving the information of the actually connected parts from the 3D digital analogy of the vehicle, and accordingly obtaining the correlation of the parts actually connected by each welding point in a targeted manner, the method has strong pertinence and high accuracy, can be convenient for effectively managing and controlling and changing the information of the welding spots, and realizes seamless connection of the information of design and manufacture.
In the embodiment shown in fig. 1, the description will be given taking an example in which the part information such as the part name, the part material, and the plate thickness of the part is already included in the attributes of the part of the 3D model of the vehicle. In practical technical applications, as described above, when modeling the 3D digifax of the vehicle, part information such as part name, part material, plate thickness, etc. is generally not included, so before executing the method in the above embodiment, the part information in the BOM may be written into the attributes of the parts in the 3D digifax of the vehicle.
Accordingly, fig. 2 shows a schematic flow chart of a vehicle body-in-white welding point information extraction method in another embodiment, as shown in fig. 2, in this embodiment, on the basis of the embodiment shown in fig. 1, before extracting information of each welding point in the vehicle 3D digital model in step S101, the method further includes the steps of:
step S1001: acquiring part numbers of parts in a bill of materials and corresponding part information, wherein the part information comprises part names, part materials and plate thicknesses;
step S1002: and writing the part information of each part into the attribute of the part corresponding to the part number in the 3D digital model of the vehicle according to the part number of each part.
Therefore, based on the above manner, the part information in the BOM (bill of material) can be written into the attribute of the part corresponding to the part number in the vehicle 3D digifax based on the part number of the part. After the actual connection part of each welding point is obtained in the subsequent step S104, the relevant welding performance of the welding point may be determined based on the part information of the actual connection part of each welding point, and welding or optimization may be performed accordingly.
As shown in fig. 2, in the example shown in fig. 2, before the step S101, the method may further include the steps of:
step S1003: numbering each welding spot to obtain the welding spot number of each welding spot, wherein the welding spot number comprises a part number of the welding spot in the 3D digital analogy of the vehicle;
step S1004: for a solder joint without a corresponding spherical feature, a spherical feature for the solder joint is created.
Therefore, any welding spot can be ensured to have a corresponding spherical characteristic body, and the subsequent spherical interference treatment on the welding spot is convenient to perform. The specific implementation manner of creating the spherical feature of the welding point based on the welding point may be implemented in any possible manner, and is not described in detail herein.
In step S1003, the welding points are numbered, and when the welding point number of the welding point is obtained, the welding point number includes the part number of the welding point in the 3D digifax of the vehicle. Therefore, in step S103, the welding point number of each welding point and the level of the part number of each initial part corresponding to the welding point in the hierarchical structure tree relationship can be compared through the hierarchical structure tree relationship in the 3D digifax of the vehicle, and the initial part in the same level as the welding point in each initial part is determined as the actual connecting part of the welding point.
Fig. 3 is a flowchart illustrating a vehicle body-in-white welding point information extraction method in another embodiment. As shown in fig. 3, on the basis of the embodiment shown in fig. 1, after the step S104, the embodiment may further include the steps of:
step S105: determining the number of the connecting parts of each welding spot, the total welding thickness and the material thickness ratio according to the derived part information of each actual connecting part of each welding spot;
step S106: and when the number of the connecting parts of the welding spots is larger than the threshold value of the number of the parts, the total welding thickness of the welding spots is larger than the threshold value of the welding thickness, or the material thickness ratio of the welding spots is larger than the threshold value of the material thickness ratio, giving prompt information.
Therefore, after actual connection parts of each welding spot are obtained, the number of the connection parts of the welding spot, the total welding thickness and the material thickness ratio are determined based on the information of the actual connection parts, so that the welding performance of the welding spot is determined, and the welding spot of which the welding performance exceeds the constraint range is prompted. When the prompt information is given, any possible mode can be adopted for prompting. In a specific example, the indication may be for the welding spot exceeding the constraint range (i.e., the number of the connected parts is greater than the part number threshold, the total welding thickness of the welding spot is greater than the welding thickness threshold, or the material thickness ratio of the welding spot is greater than the material thickness ratio threshold), and the indication may be any possible manner such as an audible indication, a highlighted indication, a stroboscopic indication, or the like.
Based on the methods in the embodiments described above, a flowchart of the method for extracting welding point information of a body-in-white vehicle in a specific application example is shown in fig. 4.
As shown in fig. 4, when the method for extracting welding point information of a body-in-white of a vehicle is started, it is first determined whether a part in a 3D digifax of the vehicle already contains a required attribute, and the determination process may be performed by reading the attribute information of the part in the 3D digifax of the vehicle, or may be performed by a worker. If the required attributes (for example, the information such as the part name, the part material, and the plate thickness mentioned above) are not included in the vehicle 3D digifax, the BOM is read, and the part information (including the part name, the material, and the plate thickness) of the part included in the BOM is written in the attributes of the part in the vehicle 3D digifax in a manner corresponding to the part number.
If the 3D digifax of the vehicle contains the attribute of the required part, whether the welding spot in the 3D digifax of the vehicle has the welding spot number or not is further analyzed, and the welding spot has the corresponding spherical characteristic body. If not, the welding points are numbered, and the welding point number may include information of the corresponding welding point part number to distinguish the welding points at different welding levels, so as to achieve effective management of the welding points of the entire vehicle. Based on the design of the vehicle 3D digifax, all the welding points are points as information features, and therefore, a sphere (referred to as a spherical feature in this embodiment) with a predetermined diameter and length (e.g., 6 mm) is generated by taking the feature points of the welding points in the vehicle 3D digifax as the center of the welding points.
When each welding point in the 3D digital-to-analog model of the vehicle has a corresponding spherical feature and has a number of the corresponding spherical feature, the spherical interference processing of the welding point is performed on any one welding point to obtain a solid part (i.e., the initial part mentioned in the above embodiment) to which the welding point may be connected. And then aiming at the obtained part number of each initial part, comparing the welding point number of each welding point with the level of the part number of each initial part corresponding to the welding point in the hierarchical relationship of the structure tree in a 3D digital analog of the vehicle, reserving the parts under the welding level of the welding point (namely, the initial parts under the same level with the welding point in each initial part are determined as the actual connecting parts of the welding point), and excluding the parts not under the welding level of the welding point, thereby determining the reserved parts as the actual connecting parts of the welding point. Because whether the part number of each part is under the welding level of the welding point can be determined based on the structure tree in the vehicle 3D digifax and based on the part numbers of each part, the welding point and the hierarchical relationship of the structure tree in the vehicle 3D digifax, the specific manner of determining whether the part number of the part is under the welding level of the welding point is not described in detail herein.
Fig. 5 is a schematic diagram illustrating a structural tree hierarchy of a 3D digifax of a vehicle in a specific application example. As shown in fig. 5, 4210001, 4210002, 4210003, 4210004 are part numbers of the weld points (i.e., weld point numbers), and the others are part numbers of the parts or combinations.
As shown in fig. 5, 4 initial parts 4010003, 4010009, 4010006 and 4010008 can be obtained by performing spherical interference processing on a solder ball 4210002_1 in the solder 4210002. By comparing whether each initial part is at the same weld level as the weld point 4210002 (i.e., the gray box area shown in fig. 5), it is obtained that only the initial parts 4010003, 4010009 are at the same weld level as the weld point 4210002, thereby identifying the initial parts 4010003, 4010009 as the actual connected parts of the weld point 4210002.
Similarly, by performing spherical interference processing on the solder ball 4210001_1 in the solder 4210001, 4 initial parts 4010003, 4010009, 4010006, and 4010008 can be obtained. By comparing whether the initial parts are at the same weld level as the weld point 4210001, it is possible to obtain which of the initial parts are the actual connecting parts of weld point 4210001.
After each actual connecting part is determined, the part information of the actual connecting part of each welding point can be derived from the 3D digifax of the vehicle according to the welding point number, the welding point coordinate and the like of each welding point, and the integration and the operation management are carried out. And determining welding parameters such as the number of the connected parts of the welding spot, the total welding thickness, the material thickness ratio and the like on the basis of the derived part information of each actual connected part. The number of the connecting parts refers to the number of the actual connecting parts of the welding point, the total welding thickness refers to the sum of the plate thicknesses of the actual connecting parts of the welding point, the material thickness ratio refers to the ratio of the maximum value to the minimum value of the plate thicknesses of the actual connecting parts of the welding point, and the like, and the specific welding parameter calculation mode can be performed in any possible mode, and is not described in detail herein.
After the welding parameters of each welding point are obtained, the welding points with the welding parameters exceeding the constraint range can be prompted. For example, when the number of connected parts of a certain welding point is greater than a part number threshold value, the total welding thickness of the welding point is greater than a welding thickness threshold value, or the material thickness ratio of the welding point is greater than a material thickness ratio threshold value, prompt information that the welding point exceeds a constraint range is given. The specific prompting manner may be performed in any possible manner, and in one specific application example, the value exceeding the constraint range may be highlighted, for example, when the material thickness ratio of the welding spot is greater than the material thickness ratio threshold, the material thickness ratio of the welding spot is highlighted, and when the total welding thickness of the welding spot is greater than the welding thickness threshold, the total welding thickness of the welding spot is highlighted. The specific part number threshold, the welding thickness threshold, the material thickness ratio threshold and the like can be specified in a personalized mode according to different enterprise standards.
As described above, in the embodiment of the present invention, for any one pad, the part connected by the pad must satisfy two logics simultaneously: producing spherical interference with the solder joint spherical features, under the level nodes of the solder joint parts. The welding spot number of the welding spot can be numbered based on the spherical characteristic body and the welding spot of the welding spot, and the structure tree of the 3D digital analog of the vehicle is combined, so that the actual connecting parts of each welding spot can be effectively determined, and further, the welding parameters of each welding spot can be determined based on the part information of each actual connecting part.
Therefore, based on the method in the embodiment, on one hand, the accuracy and the effectiveness of welding spot information management can be ensured, the field process management informatization is realized, on the other hand, the consistency of welding spot design and manufacture can also be ensured, on the other hand, the convenience of field process information extraction can also be realized, and the efficiency of welding spot information management, welding parameter debugging and management and welding process documentation is improved. Practical experiments show that the efficiency of welding spot information management, welding parameter debugging and management and process documentation is improved by more than 30% based on the scheme in the embodiment.
Based on the same idea as the method, an embodiment of the invention further provides a vehicle body-in-white welding point information extraction device, and fig. 6 shows a schematic structural diagram of the vehicle body-in-white welding point information extraction device in one embodiment.
As shown in fig. 6, the vehicle body-in-white spot weld information extracting apparatus in this embodiment includes:
the welding spot information extraction module 601 is used for extracting welding spot information of each welding spot in the vehicle 3D digital analog, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
the spherical interference module 602 is configured to perform spherical interference processing on the welding points and each part in the 3D digital-to-analog converter of the vehicle according to the spherical feature of each welding point, so as to obtain a part number of each initial part to which each welding point may be connected;
the part screening module 603 is configured to screen actual connection parts of each welding point from the initial parts corresponding to each welding point according to the welding point number of each welding point, the part number of the initial part corresponding to each welding point, and the hierarchical relationship of the structure tree in the 3D digital model of the vehicle;
a part information obtaining module 604, configured to derive part information of actually connected parts of each welding point from the vehicle 3D digital model, where the part information includes a part name, a part material, and a part plate thickness.
According to the scheme of the embodiment of the invention, the information of the part name, the part material, the part plate thickness and the like of the part is added into the 3D digital model of the vehicle, by extracting each welding spot in the 3D digital analog of the vehicle and carrying out spherical interference processing on the welding spot based on the spherical characteristic body of each welding spot, initial parts possibly connected with each welding point can be obtained, the initial parts are screened by combining the hierarchical relation of the structure tree in the 3D digifax of the vehicle, thereby determining the information of the parts actually connected by each welding point, deriving the information of the actually connected parts from the 3D digital analogy of the vehicle, and accordingly obtaining the correlation of the parts actually connected by each welding point in a targeted manner, the method has strong pertinence and high accuracy, can be convenient for effectively managing and controlling and changing the information of the welding spots, and realizes seamless connection of the information of design and manufacture.
In the above-described embodiment, the description is given taking as an example that the part information such as the part name, the part material, and the plate thickness of the part is already included in the attribute of the part of the 3D model of the vehicle. In practical technical applications, as described above, when modeling the 3D digifax of the vehicle, part information such as part name, part material, plate thickness, etc. is generally not included, so before executing the method in the above embodiment, the part information in the BOM may be written into the attributes of the parts in the 3D digifax of the vehicle.
Accordingly, in a specific example, on the basis of the above-described embodiment, the vehicle body-in-white weld point information extraction device in the present embodiment may further include:
the part information importing module 6001 is used for acquiring part numbers of parts in the bill of materials and corresponding part information, wherein the part information comprises part names, part materials and plate thicknesses; and writing the part information of each part into the attribute of the part corresponding to the part number in the 3D digifax of the vehicle according to the part number of each part.
Therefore, based on the above manner, the part information in the BOM (bill of material) can be written into the attribute of the part corresponding to the part number in the vehicle 3D digifax based on the part number of the part. After the actual connection part of each welding point is obtained in the subsequent step S104, the relevant welding performance of the welding point may be determined based on the part information of the actual connection part of each welding point, and welding or optimization may be performed accordingly.
In a specific application example, as shown in fig. 6, the vehicle body-in-white welding point information extraction device in the present embodiment may further include:
the welding spot numbering module 6002 is used for numbering each welding spot to obtain the welding spot number of each welding spot, and the welding spot number comprises a part number of the welding spot in the vehicle 3D digital-to-analog;
a spherical feature creation module 6003 that creates a spherical feature for a solder joint that does not have a corresponding spherical feature.
Therefore, any welding spot can be ensured to have a corresponding spherical characteristic body, and the subsequent spherical interference treatment on the welding spot is convenient to perform. The specific implementation manner of creating the spherical feature of the welding point based on the welding point may be implemented in any possible manner, and is not described in detail herein.
The welding spot numbering module 6002 numbers welding spots, and when the welding spot number of the welding spot is obtained, the welding spot number includes a part number of the welding spot in a 3D digital-to-analog module of the vehicle. Therefore, the part screening module 603 may compare the welding point number of each welding point with the level of the part number of each initial part corresponding to the welding point in the hierarchical relationship of the structure tree in the 3D digital-to-analog model of the vehicle, and determine the initial part in the same level as the welding point in each initial part as the actual connection part of the welding point.
In a specific application example, as shown in fig. 6, the vehicle body-in-white welding point information extraction device in the present embodiment may further include:
the welding spot performance determining module 605 is configured to determine the number of connection parts, the total welding thickness, and the material-thickness ratio of each welding spot according to the derived part information of each actual connection part of each welding spot;
and the prompting module 606 is used for giving prompting information when the number of the connecting parts of the welding spots is larger than the threshold value of the number of the parts, the total welding thickness of the welding spots is larger than the threshold value of the welding thickness, or the material thickness ratio of the welding spots is larger than the threshold value of the material thickness ratio.
Therefore, after actual connection parts of each welding spot are obtained, the number of the connection parts of the welding spot, the total welding thickness and the material thickness ratio are determined based on the information of the actual connection parts, so that the welding performance of the welding spot is determined, and the welding spot of which the welding performance exceeds the constraint range is prompted. When the prompt information is given, any possible mode can be adopted for prompting. In a specific example, the indication may be for the welding spot exceeding the constraint range (i.e., the number of the connected parts is greater than the part number threshold, the total welding thickness of the welding spot is greater than the welding thickness threshold, or the material thickness ratio of the welding spot is greater than the material thickness ratio threshold), and the indication may be any possible manner such as an audible indication, a highlighted indication, a stroboscopic indication, or the like.
Other technical features of the vehicle body-in-white welding spot information extraction device of the embodiment may be the same as those of the vehicle body welding spot information extraction method, and are not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for extracting welding spot information of a vehicle body-in-white is characterized by comprising the following steps:
extracting welding spot information of each welding spot in a 3D digital-to-analog model of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
according to the spherical characteristic body of each welding spot, performing spherical interference processing on each welding spot and each part in the 3D digital-to-analog of the vehicle to obtain part numbers of each initial part possibly connected with each welding spot;
screening actual connecting parts of the welding points from the initial parts corresponding to the welding points according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relation of a structure tree in the 3D digital analogy of the vehicle;
deriving part information of actually connected parts of each welding spot from the vehicle 3D digital analogy, wherein the part information comprises part names, part materials and part plate thicknesses;
determining relevant welding performance of each welding spot based on the derived actual connecting part information of each welding spot;
the welding spot number comprises a part number of the welding spot in the 3D digital analogy of the vehicle;
the method for screening the actual connecting parts of the welding points from the initial parts corresponding to the welding points respectively according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relationship of the structure tree in the 3D digital analogy of the vehicle comprises the following steps:
and comparing the welding point number of each welding point with the level of the part number of each initial part corresponding to the welding point in the hierarchical relation of the structure tree through the hierarchical relation of the structure tree in the 3D digital analog of the vehicle, and determining the initial part in the same level with the welding point in each initial part as the actual connecting part of the welding point.
2. The method for extracting welding spot information of the body-in-white of the vehicle according to claim 1, before extracting the information of each welding spot in the 3D digital model of the vehicle, further comprising the steps of:
acquiring part numbers of parts in a bill of materials and corresponding part information, wherein the part information comprises part names, part materials and plate thicknesses;
and writing the part information of each part into the attribute of the part corresponding to the part number in the 3D digital model of the vehicle according to the part number of each part.
3. The method for extracting welding spot information of the body-in-white of the vehicle according to claim 1, before extracting the information of each welding spot in the 3D digital model of the vehicle, further comprising the steps of:
numbering each welding spot to obtain the welding spot number of each welding spot, wherein the welding spot number comprises a part number of the welding spot in the 3D digital analogy of the vehicle;
for a solder joint without a corresponding spherical feature, a spherical feature for the solder joint is created.
4. The vehicle body-in-white welding spot information extraction method according to claim 1, further comprising the steps of:
determining the number of the connecting parts of each welding spot, the total welding thickness and the material thickness ratio according to the derived part information of each actual connecting part of each welding spot;
and when the number of the connecting parts of the welding spots is larger than the threshold value of the number of the parts, the total welding thickness of the welding spots is larger than the threshold value of the welding thickness, or the material thickness ratio of the welding spots is larger than the threshold value of the material thickness ratio, giving prompt information.
5. The vehicle body-in-white welding point information extraction method according to claim 4, wherein the number of the connecting parts is the number of actual connecting parts of the welding point, the total welding thickness is the sum of plate thicknesses of the actual connecting parts of the welding point, and the material thickness ratio is the ratio of the maximum value to the minimum value of the plate thicknesses of the actual connecting parts of the welding point.
6. A vehicle body-in-white welding spot information extraction device is characterized by comprising:
the welding spot information extraction module is used for extracting welding spot information of each welding spot in the 3D digital analog of the vehicle, wherein the welding spot information comprises a welding spot number and a spherical feature body taking the welding spot as a center;
the spherical interference module is used for performing spherical interference processing on the welding spots and parts in the 3D digital analog of the vehicle according to the spherical characteristic bodies of the welding spots to obtain part numbers of initial parts possibly connected with the welding spots;
the part screening module is used for screening actual connecting parts of the welding points from the initial parts corresponding to the welding points according to the welding point numbers of the welding points, the part numbers of the initial parts corresponding to the welding points and the hierarchical relation of the structure tree in the 3D digital analogy of the vehicle;
the part information acquisition module is used for deriving part information of actually connected parts of each welding spot from the vehicle 3D digital analogy, and the part information comprises part names, part materials and part plate thicknesses;
the related welding performance determining module is used for determining the related welding performance of each welding spot based on the derived actual connecting part information of each welding spot;
the welding spot number comprises a part number of the welding spot in a 3D digital-to-analog model of the vehicle;
the part screening module compares the welding point number of each welding point with the level of the part number of each initial part corresponding to the welding point in the hierarchical relation of the structure tree through the hierarchical relation of the structure tree in the 3D digital analog of the vehicle, and determines the initial part in the initial parts, which is at the same level with the welding point, as the actual connecting part of the welding point.
7. The vehicle body-in-white weld point information extraction device according to claim 6, further comprising:
the part information import module is used for acquiring part numbers of parts in the bill of materials and corresponding part information, wherein the part information comprises part names, part materials and plate thicknesses; and writing the part information of each part into the attribute of the part corresponding to the part number in the 3D digifax of the vehicle according to the part number of each part.
8. The vehicle body-in-white weld point information extraction device according to claim 6, further comprising:
the welding spot numbering module is used for numbering each welding spot to obtain the welding spot number of each welding spot, and the welding spot number comprises a part number of the welding spot in the 3D digital analogy of the vehicle;
and the spherical feature body creating module is used for creating the spherical feature body of the welding spot for the welding spot without the corresponding spherical feature body.
9. The vehicle body-in-white weld point information extraction device according to claim 6, further comprising:
the welding spot performance determining module is used for determining the number of the connecting parts, the total welding thickness and the material thickness ratio of each welding spot according to the derived part information of each actual connecting part of each welding spot;
and the prompting module is used for giving prompting information when the number of the connecting parts of the welding spots is larger than the threshold value of the number of the parts, the total welding thickness of the welding spots is larger than the threshold value of the welding thickness, or the material thickness ratio of the welding spots is larger than the threshold value of the material thickness ratio.
10. The vehicle body-in-white weld information extraction device according to claim 9, wherein: the welding total thickness refers to the sum of the plate thicknesses of the actual connecting parts of the welding point, and the material thickness ratio refers to the ratio of the maximum value to the minimum value of the plate thicknesses of the actual connecting parts of the welding point.
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| CN108465964B (en) * | 2018-03-19 | 2021-06-01 | 武汉天喻软件股份有限公司 | Three-dimensional white car body welding process card compiling method based on welding spot structured data |
| CN108763843B (en) * | 2018-07-27 | 2022-02-01 | 江铃汽车股份有限公司 | Automatic modeling method and system for spot welding connection of automobile body in white |
| CN111191416B (en) * | 2019-11-14 | 2023-12-05 | 广州明珞汽车装备有限公司 | Control method and system for welding spot information conversion |
| CN111639449B (en) * | 2020-05-26 | 2023-04-21 | 东风小康汽车有限公司重庆分公司 | Welding spot modeling method, device and system |
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