Virtual verification method and system for tool positioning reference integration

Abstract

The invention relates to the technical field of automobile tool positioning and assembling, in particular to a virtual verification method and system for tool positioning reference integration. Comprising the steps of establishing a positioning tool database; marking and designing the positioning tool; calling a positioning tool in a database; the size and position rationality of the positioning tool is virtually verified on three-dimensional design software; standardized marking is carried out on the positioning tool which is reasonable in size and position after virtual verification; and issuing a standard tool positioning system file. The positioning blocks and the positioning pins of the database are quickly called through software, the reasonability of the sizes and the positions of the positioning blocks and the positioning pins is virtually verified in the early stage of design, and design changes of tool objects in the project commissioning stage are reduced. According to the method, the inheritance and the consistency of the tool positioning reference are ensured, the vehicle body size quality problem checking efficiency is improved, the white vehicle body size quality level is effectively ensured, and the influence on other professional tools can be quickly identified when the positioning information of different professional tools is changed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile tooling positioning and assembly, and in particular to a virtual verification method and system for tooling positioning benchmark integration. Background Art

[0002] The body-in-white process involves the development of multiple professional tooling, from sheet metal stamping parts to welding and assembly of the body-in-white, and then to three-coordinate inspection and door cover assembly. The tooling includes: molds, fixtures, inspection tools, measuring brackets and assembly tooling for doors, hoods, and fenders.

[0003] During the vehicle development and design stage, it is necessary to compile tooling positioning reference files to ensure that the body sheet metal parts have appropriate tooling positioning surfaces and positioning holes, and to ensure that there are technical guidance files when developing body molds, fixtures, gauges, measuring brackets, and door, hood, and fender assembly tooling; There are two common tooling positioning reference files in the industry. The virtual verification method and system based on this method have the following defects: Method 1: The tooling positioning reference file is an Excel or PPT version of a two-dimensional RPS (Reference Point System) file. The positioning blocks are of the same size and are not integrated with the three-dimensional digital model of the part. There is no distinction between the positioning blocks for different professions and uses. The positioning blocks are not placed on the three-dimensional digital model of the part to virtually verify the rationality of their size and position. As a result, after the tooling is physically processed during the production process, the tooling positioning blocks interfere with the parts, affecting the welding channel, resulting in welding failure and excessive quality of the welding assembly size.

[0004] Method 2: The tooling positioning reference file is the three-dimensional fixture MCP (Master Control Point) file. The support and clamping blocks are designed on the three-dimensional digital model of the part, but there is no functional distinction between the positioning blocks, and no integrated design consideration of other professional molds, inspection fixtures, measuring brackets and other tooling positioning information. This results in the transfer of the positioning reference of each professional tooling, unclear analysis of the cause of dimensional problems, and difficulty in improving the dimensional quality of the body in white. Summary of the invention

[0005] The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention proposes a virtual verification method and system for tooling positioning benchmark integration.

[0006] The virtual verification method for tooling positioning reference integration according to the first embodiment of the present invention is applied to three-dimensional design software, and includes: Step S100, establishing a database of multiple positioning tools; Step S200, annotation definition, initial annotation definition is performed on multiple positioning tools, a guide line is used to indicate the center of the positioning tool, and annotation content is added for initial standardized definition; Step S300, importing a body sheet metal into a three-dimensional design software, wherein the body sheet metal includes a plurality of positioning reference domains and a plurality of interference point portions located around each positioning reference domain, and determining a coordinate center position of each positioning reference domain in the three-dimensional design software; Step S400, calling the positioning tooling at each coordinate center position for pre-assembly; Step S500, verifying and calibrating the pre-assembled body sheet metal to determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; Step S600, generating and publishing a vehicle body tooling positioning reference three-dimensional information file.

[0007] In a possible implementation manner of the first aspect, the positioning tool includes a positioning block and a positioning pin, the positioning block is a cubic positioning block, and the positioning pin is a columnar positioning pin.

[0008] In a possible implementation manner of the first aspect, the height of the positioning tool is 10 mm, wherein the cubic positioning block is selected in a sequence of length×width, and the columnar positioning pin is selected in a sequence of diameter.

[0009] In a possible implementation manner of the first aspect, the annotation content includes a positioning symbol, a positioning type, a positioning surface, a control direction, and a professional description position.

[0010] In a possible implementation of the first aspect, in step S400, the positioning tool can be directly selected according to the size of the positioning reference domain on the body sheet metal. If there is no positioning reference domain on the body sheet metal corresponding to the size of the positioning tool, the size of the positioning reference domain on the body sheet metal needs to be changed to match the size of the positioning tool.

[0011] In a possible implementation of the first aspect, the plurality of interference points located on the body sheet metal include a sheet metal side perimeter portion, a part hole, a projection welding nut, a welding gun head, and a welding point center reserved position, wherein: The premise for judging whether the distance between the positioning fixture and the interference point portion meets the preset conditions is that the following conditions must be met at the same time: Condition 1: The distance between the positioning fixture and the side of the sheet metal is not less than 3.0 mm; Condition 2: The distance between the positioning fixture and the part hole is not less than 3.0 mm; Condition 3: The distance between the positioning fixture and the projection welding nut is not less than 3.0 mm; Condition 4: The distance between the positioning fixture and the welding gun head is not less than 5.0 mm; Condition 5: The distance between the positioning fixture and the reserved position at the center of the welding point shall not be less than 15.0 mm.

[0012] In a possible implementation manner of the first aspect, the professional description location includes: Tooling application scenarios; Serial number, used to distinguish the number of positioning tools; Part symbol, used to mark the drawing number of the positioning tooling; The center point coordinate position is used to mark the center point coordinates of the positioning tooling.

[0013] According to the virtual verification method of the tooling positioning benchmark integration of the embodiment of the present invention, a set of tooling positioning blocks and positioning pins database is established, and standardized three-dimensional annotation of the integrated mold, fixture, inspection fixture, measuring bracket and door, hood, and fender assembly tooling information is performed. By quickly retrieving the positioning blocks and positioning pins in the database on the three-dimensional digital model of the parts, the rationality of the size and position of the positioning blocks and positioning pins is virtually verified in the early stage of design, reducing the design changes of the tooling in the project production stage. By integrating the positioning information of each professional tooling, the inheritance and consistency of the tooling positioning benchmark is guaranteed, the efficiency of the investigation and troubleshooting of the body size quality problem is improved, the quality level of the body-in-white size is effectively guaranteed, and it is also conducive to the rapid identification of the impact on other professional tooling when the positioning information of different professional tooling is changed.

[0014] The present invention adopts a standardized tooling positioning block and positioning pin sequence to replace the physical tooling positioning reference structure. During the body sheet metal design stage, the positioning blocks and positioning pins in the database are quickly called on the three-dimensional digital model of the parts to verify the rationality of the size and position of the tooling positioning blocks and positioning pins, and to verify the sheet metal part data to see whether there are suitable positioning surfaces and positioning holes for tooling positioning. It effectively ensures that there are suitable positioning holes and suitable positioning surface positions on the product parts, and ensures the distance between the positioning pins and positioning surfaces and the part fillets, part holes, projection welding nuts, and welding gun heads, saving a large number of molds, fixtures, inspection fixtures, measuring brackets, and assembly tools during the project commissioning stage, and the tooling design change costs caused by the unreasonable size and position of the positioning blocks and positioning pins.

[0015] The three-dimensional integrated annotation of the tooling positioning block and positioning pin of the present invention covers all the relevant tooling positioning reference information of the vehicle body. When the positioning information of such a professional tooling is changed, the impact on other professional tools can be identified in time; it is beneficial to ensure the consistency and inheritance of the positioning system of molds, fixtures, inspection tools, measuring brackets and assembly tools, reduce the vehicle body size quality problems caused by inconsistent tooling positioning systems and poor inheritance relationships, and improve the efficiency of troubleshooting vehicle body parts problems and the size quality level of the white body.

[0016] According to a second aspect of the present invention, a virtual verification system for tooling positioning reference integration is provided. The system is equipped with three-dimensional design software and adopts the virtual verification method for tooling positioning reference integration as described above, which includes: Establishing module for establishing database of multiple positioning tools; A definition module is used to initially define the multiple positioning tools by using guide lines to indicate the center of the positioning tools and adding annotation content for initial standardized definition; A determination module is used to determine the coordinate center position of each positioning reference domain of the body sheet metal; A calling module, used for calling the positioning tooling at each coordinate center position for pre-assembly; A verification module is used to check and verify the pre-assembled body sheet metal, and determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; The publishing module is used to generate and publish the three-dimensional information file of the body tooling positioning benchmark, which can be called directly.

[0017] A computer device according to an embodiment of the third aspect of the present invention includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the virtual verification method for the integration of tooling positioning references as described above is implemented.

[0018] According to a computer storage medium of an embodiment of the fourth aspect of the present invention, instructions are stored in the computer storage medium, and when the instructions are executed on a computer, the computer executes the virtual verification method of tooling positioning reference integration as described above.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a flow chart of a virtual verification method for tooling positioning reference integration according to an embodiment of the present invention; Figure 2 is a schematic diagram of a sequence of cubic positioning blocks integrated with a tooling positioning reference according to an embodiment of the present invention; Figure 3 is a schematic diagram of a sequence of columnar positioning pins integrated with a tooling positioning reference according to an embodiment of the present invention; Figure 4 is a schematic diagram of determining the coordinate center position of a body sheet metal integrated with a tooling positioning reference according to an embodiment of the present invention; Figure 5 is a schematic diagram of a body sheet metal profile modification integrated with a tooling positioning reference according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the position size adjustment verification of the positioning tooling integrated with the tooling positioning reference according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. 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.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The terms "first", "second", "third", etc. in the specification and claims of the present application and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or optionally, steps or units not listed are included, or optionally, other steps or units inherent to these processes, methods, products or devices are included.

[0026] Only the part relevant to the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. When its operation is completed, the process can be terminated, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0027] The terms "component", "module", "system", "unit", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. Units can communicate through local and / or remote processes, for example, based on signals having one or more data packets (e.g., data from a second unit interacting with another unit in a local system, a distributed system, and / or a network. For example, the Internet interacts with other systems via signals).

[0028] The present invention designs a set of three-dimensional positioning tooling (including positioning blocks and positioning pins) that is universal for positioning references of vehicle body molds, fixtures, inspection fixtures, measuring brackets, and door, hood, and fender assembly tooling. In the vehicle body development and design stage, the three-dimensional positioning blocks and positioning pins are quickly called on the product part digital model to virtually verify the rationality of their size and position, thereby avoiding tooling design changes caused by unreasonable tooling positioning reference size and position when the project is put into production.

[0029] The positioning symbols, positioning type, control direction, professional purpose, part drawing number and reference coordinate center point information are integrated on the three-dimensional tooling positioning blocks and positioning pins. It is ensured that different professions can simultaneously identify the use of the same positioning block in the development of different professional tooling. It avoids the low efficiency of vehicle body size problem troubleshooting and the inability to improve the vehicle body size quality caused by the inconsistent types, sizes and positions of positioning blocks of various professional tooling. At the same time, it can help different professional tooling positioning benchmarks to quickly understand the impact on other professional tooling. See the following embodiments for details.

[0030] Example 1 See also Figure 1 As shown, this embodiment provides a virtual verification method for tooling positioning reference integration, which is applied to three-dimensional design software, and includes: Step S100, establishing a database of multiple positioning tools; Step S200, annotation definition, initial annotation definition is performed on multiple positioning tools, a guide line is used to indicate the center of the positioning tool, and annotation content is added for initial standardized definition; It should be noted that the center includes the center of the upper surface of the positioning tool or the center line of the positioning tool.

[0031] Step S300, importing the body sheet metal into the 3D design software, the body sheet metal comprising a plurality of positioning reference domains and a plurality of interference point portions located around each positioning reference domain, and determining the coordinate center position of each positioning reference domain in the 3D design software, such as Figure 4 As shown; Step S400, calling the positioning tooling at each coordinate center position for pre-assembly; Step S500, verifying and calibrating the pre-assembled body sheet metal to determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; Step S600, generating and publishing a three-dimensional information file of the positioning reference of the vehicle body tooling, which can be directly called on the three-dimensional design software.

[0032] It should be noted that the positioning tool includes a positioning block and a positioning pin, the positioning block is a cubic positioning block, and the positioning pin is a columnar positioning pin.

[0033] It should be noted that the 3D design software includes but is not limited to CATIA software or UG software.

[0034] It should be noted that the height of the positioning fixture is 10mm, wherein the cubic positioning block is selected in a sequence of length × width, and the columnar positioning pin is selected in a sequence of diameter. It should be noted that the sequence of the cubic positioning block includes 20mm×20mm, 20mm×15mm, 15mm×15mm, 15mm×10mm, 10mm×10mm, 10mm×5mm. The above sequence is preferred. If the sequence is insufficient, it is increased or decreased in units of 5mm. Figure 2 As shown, the series of cylindrical positioning pins includes Φ25mm, Φ19mm, Φ16mm, Φ12mm, Φ10mm, Φ8mm, which is convenient for subsequent tooling standard parts, see Figure 3 shown.

[0035] It should be noted that the marking content includes positioning symbols, positioning types, positioning surfaces, control directions and professional description positions.

[0036] It should be noted that the positioning block type is standardized and defined with the guide line indicating the center of the positioning block. The annotation is divided into: positioning symbols, such as circular or square; positioning types, such as positioning holes H, h; positioning surfaces S, s, CO, CK, J; control directions, such as X, Y, Z; professional descriptions, such as stamping dies and inspection fixtures marked O, welding fixtures marked S, assembly inspection fixtures marked K, and main assembly fixtures marked C. In the professional description position, if this positioning block is used in all professions, mark OSKC; in the serial number position, distinguish the number of positioning blocks; part symbol, mark the drawing number of the product part; the center point coordinate position is marked with the center point coordinates of the positioning block. For instructions on the three-dimensional standard annotation of positioning blocks, see Figure 5 ; The three-dimensional integrated marking of the positioning pin is the same as the positioning block marking method, pointing to the center point of the cylinder.

[0037] It should be noted that the positioning reference domain includes positioning reference holes and positioning reference surfaces on the vehicle body.

[0038] It should be noted that in step S400, the positioning tool can be directly selected according to the size of the positioning reference domain on the body sheet metal. If there is no positioning reference domain on the body sheet metal corresponding to the size of the positioning tool, the size of the positioning reference domain on the body sheet metal needs to be changed to match the size of the positioning tool.

[0039] Specifically, call the positioning blocks and positioning pins in the tooling positioning system database at the coordinate center. The positioning pins can be directly selected according to the size of the part's positioning hole. If the part does not have a positioning hole corresponding to the positioning pin diameter sequence, the size of the part's positioning hole needs to be changed. The size of the positioning block is generally selected from large to small, and the 20mm×20mm positioning block is preferred. If the part position cannot be arranged, select 20mm×15mm, 15mm×15mm, 15mm×10mm, 10mm×10mm, 10mm×5mm positioning blocks. If the part does not have a suitable positioning block placement position, the part needs to be modified to provide a suitable positioning block placement position structure, see Figure 5 shown.

[0040] It should be noted that the multiple interference points located on the body sheet metal include the sheet metal side perimeter, part holes, projection welding nuts, welding gun heads, and welding point center reserved positions, wherein: The premise for judging whether the distance between the positioning fixture and the interference point portion meets the preset conditions is that the following conditions must be met at the same time: Condition 1: The distance between the positioning fixture and the side of the sheet metal is not less than 3.0 mm; Condition 2: The distance between the positioning fixture and the part hole is not less than 3.0 mm; Condition 3: The distance between the positioning fixture and the projection welding nut is not less than 3.0 mm; Condition 4: The distance between the positioning fixture and the welding gun head is not less than 5.0 mm; Condition 5: The distance between the positioning fixture and the reserved position of the welding point center is not less than 15.0 mm, which is used to reduce the interference effect of the positioning fixture on the body sheet metal during assembly.

[0041] It is worth mentioning that if the position and size of the positioning block do not meet the distance requirements, the size and position of the positioning block need to be adjusted. Figure 6 As shown, the distance to the fillet of the sheet metal in the figure refers to the distance between the positioning tool and the side surrounding part of the sheet metal.

[0042] It should be noted that the professional description positions include: Tooling application scenarios; Serial number, used to distinguish the number of positioning tools; Part symbol, used to mark the drawing number of the positioning tooling; The center point coordinate position is used to mark the center point coordinates of the positioning tooling.

[0043] According to the virtual verification method of the tooling positioning benchmark integration of the embodiment of the present invention, a set of tooling positioning blocks and positioning pins database is established, and standardized three-dimensional annotation of the integrated mold, fixture, inspection fixture, measuring bracket and door, hood, and fender assembly tooling information is performed. By quickly retrieving the positioning blocks and positioning pins in the database on the three-dimensional digital model of the parts, the rationality of the size and position of the positioning blocks and positioning pins is virtually verified in the early stage of design, reducing the design changes of the tooling in the project production stage. By integrating the positioning information of each professional tooling, the inheritance and consistency of the tooling positioning benchmark is guaranteed, the efficiency of the investigation and troubleshooting of the body size quality problem is improved, the quality level of the body-in-white size is effectively guaranteed, and it is also conducive to the rapid identification of the impact on other professional tooling when the positioning information of different professional tooling is changed.

[0044] The present invention adopts a standardized tooling positioning block and positioning pin sequence to replace the physical tooling positioning reference structure. During the body sheet metal design stage, the positioning blocks and positioning pins in the database are quickly called on the three-dimensional digital model of the parts to verify the rationality of the size and position of the tooling positioning blocks and positioning pins, and to verify the sheet metal part data to see whether there are suitable positioning surfaces and positioning holes for tooling positioning. It effectively ensures that there are suitable positioning holes and suitable positioning surface positions on the product parts, and ensures the distance between the positioning pins and positioning surfaces and the part fillets, part holes, projection welding nuts, and welding gun heads, saving a large number of molds, fixtures, inspection fixtures, measuring brackets, and assembly tools during the project commissioning stage, and the tooling design change costs caused by the unreasonable size and position of the positioning blocks and positioning pins.

[0045] The three-dimensional integrated annotation of the tooling positioning block and positioning pin of the present invention covers all the relevant tooling positioning reference information of the vehicle body. When the positioning information of such a professional tooling is changed, the impact on other professional tools can be identified in time; it is beneficial to ensure the consistency and inheritance of the positioning system of molds, fixtures, inspection tools, measuring brackets and assembly tools, reduce the vehicle body size quality problems caused by inconsistent tooling positioning systems and poor inheritance relationships, and improve the efficiency of troubleshooting vehicle body parts problems and the size quality level of the white body.

[0046] Example 2 This embodiment provides a virtual verification system for tooling positioning reference integration, the system is equipped with three-dimensional design software, and adopts the virtual verification method for tooling positioning reference integration as described above, which includes: Establishing module for establishing database of multiple positioning tools; A definition module is used to initially define the multiple positioning tools by using guide lines to indicate the center of the positioning tools and adding annotation content for initial standardized definition; A determination module is used to determine the coordinate center position of each positioning reference domain of the body sheet metal; A calling module, used for calling the positioning tooling at each coordinate center position for pre-assembly; A verification module is used to check and verify the pre-assembled body sheet metal, and determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; The publishing module is used to generate and publish the three-dimensional information file of the body tooling positioning reference, which can be directly called on the three-dimensional design software.

[0047] Example 3 This embodiment provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the virtual verification method for the integration of tooling positioning references as described above is implemented.

[0048] Example 4 This embodiment provides a computer storage medium, wherein the computer storage medium stores instructions, and when the instructions are executed on a computer, the computer executes the virtual verification method for tooling positioning reference integration as described above.

[0049] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0051] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A virtual verification method for tooling positioning benchmark integration, applied to three-dimensional design software, characterized in that: include: Step S100, establishing a database of multiple positioning tools; Step S200, annotation definition, initial annotation definition is performed on multiple positioning tools, a guide line is used to indicate the center of the positioning tool, and annotation content is added for initial standardized definition; Step S300, importing a body sheet metal into a three-dimensional design software, wherein the body sheet metal includes a plurality of positioning reference domains and a plurality of interference point portions located around each positioning reference domain, and determining a coordinate center position of each positioning reference domain in the three-dimensional design software; Step S400, calling the positioning tooling at each coordinate center position for pre-assembly; Step S500, verifying and calibrating the pre-assembled body sheet metal to determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; Step S600, generating and publishing a vehicle body tooling positioning reference three-dimensional information file.

2. The virtual verification method for tooling positioning reference integration according to claim 1, characterized in that: The positioning tool comprises a positioning block and a positioning pin, wherein the positioning block is a cubic positioning block and the positioning pin is a columnar positioning pin.

3. The virtual verification method for tooling positioning reference integration according to claim 2 is characterized in that: The height of the positioning tool is 10 mm, wherein the cubic positioning block is selected in a sequence of length×width, and the columnar positioning pin is selected in a sequence of diameter.

4. The virtual verification method for tooling positioning reference integration according to claim 1, characterized in that: The marking content includes positioning symbols, positioning types, positioning surfaces, control directions and professional description positions.

5. The virtual verification method for tooling positioning reference integration according to claim 1, characterized in that: In step S400, the positioning tool is directly selected according to the size of the positioning reference domain on the body sheet metal. If there is no positioning reference domain on the body sheet metal corresponding to the size of the positioning tool, the size of the positioning reference domain on the body sheet metal needs to be changed to match the size of the positioning tool.

6. The virtual verification method for tooling positioning reference integration according to claim 1, characterized in that: The multiple interference points located on the body sheet metal include the sheet metal side perimeter, part holes, projection welding nuts, welding gun heads, and welding point center reserved positions, wherein: The premise for judging whether the distance between the positioning fixture and the interference point portion meets the preset conditions is that the following conditions must be met at the same time: Condition 1: The distance between the positioning fixture and the side of the sheet metal is not less than 3.0 mm; Condition 2: The distance between the positioning fixture and the part hole is not less than 3.0 mm; Condition 3: The distance between the positioning fixture and the projection welding nut is not less than 3.0 mm; Condition 4: The distance between the positioning fixture and the welding gun head is not less than 5.0 mm; Condition 5: The distance between the positioning fixture and the reserved position at the center of the welding point shall not be less than 15.0 mm.

7. The virtual verification method for tooling positioning reference integration according to claim 1, characterized in that: The professional description positions include: Tooling application scenarios; Serial number, used to distinguish the number of positioning tools; Part symbol, used to mark the drawing number of the positioning tooling; The center point coordinate position is used to mark the center point coordinates of the positioning tooling.

8. A virtual verification system for tooling positioning reference integration, the system is equipped with three-dimensional design software, and adopts the virtual verification method for tooling positioning reference integration as claimed in any one of claims 1 to 7, characterized in that: include: Establishing module for establishing database of multiple positioning tools; A definition module is used to initially define the multiple positioning tools by using guide lines to indicate the center of the positioning tools and adding annotation content for initial standardized definition; A determination module is used to determine the coordinate center position of each positioning reference domain of the body sheet metal; A calling module, used for calling the positioning tooling at each coordinate center position for pre-assembly; A verification module is used to check and verify the pre-assembled body sheet metal, and determine whether the spacing between the positioning tool and the interference point portion meets the preset conditions. If not, the positioning tool needs to be adjusted until the preset conditions are met, and the adjusted positioning tool is re-annotated and defined to replace the initial annotation definition; The publishing module is used to generate and publish the three-dimensional information file of the body tooling positioning benchmark.

9. A computer device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the virtual verification method for tooling positioning reference integration as claimed in any one of claims 1 to 7 when executing the computer program.

10. A computer storage medium, characterized in that: The computer storage medium stores instructions, and when the instructions are executed on a computer, the computer executes the virtual verification method for tooling positioning reference integration as described in any one of claims 1 to 7.

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