Digital virtual assembly use method and detection system

Abstract

The invention discloses a digital virtual assembly use method and a detection system, and relates to the technical field of detection, the digital virtual assembly detection system use method comprises a laser scanner, the laser scanner obtains 3D point cloud data of a part, and performs size matching analysis in combination with 3DCS assembly software; virtual matching analysis is carried out on a to-be-detected workpiece through big data, automatic early warning is achieved for workpiece matching in advance, manpower and material resources can be greatly reduced, the cost is reduced, the production efficiency is improved, virtual matching simulates the real process of part assembling through software, 3D point cloud data of the part is obtained through a laser scanner, and the accuracy of part assembling is improved. Size matching analysis is carried out in combination with 3DCS assembly software, virtual assembly is carried out under a unified vehicle body coordinate system according to a three-dimensional scanning model, and the functions of deviation analysis, three-dimensional point measurement and legend report are provided.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically to a digital virtual assembly method and testing system. Background Technology

[0002] In the process of automobile body manufacturing, it is necessary to control the body parts in order to control the overall body quality. The traditional measurement method is to match the actual body parts. The matching process requires the installation of corresponding brackets and the adjustment of body parts, which is quite difficult. Moreover, problems are only discovered after the parts are matched. This leads to untimely information feedback, high costs, and low efficiency.

[0003] Based on this, we propose to use big data to perform virtual matching analysis on car bodies, reduce measurement errors, and provide automatic early warnings for matching car parts in advance. This can greatly reduce manpower and material resources, lower costs, and improve production efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a digital virtual assembly method and inspection system, which solves the problem of large manual measurement errors in existing devices. To achieve the above objectives, this invention is implemented through the following technical solution: A method for using a digital virtual assembly inspection system, comprising a laser scanner (8), wherein the laser scanner (8) acquires 3D point cloud data of parts and performs dimensional matching analysis in conjunction with 3DCS assembly software. The specific steps are as follows: S1: Acquire complete 3D data of the part and 3D data of the assembly area through optical measurement; S2: Fit the three-dimensional data of the parts to the measurement coordinate system required by the product using 3DCS assembly software; S3: Define the location of DTS measurement points; S4: The assembly area is the variable, the tolerance is the adjustment amount, and the DTS tolerance is the constraint condition. S5: Complete the above assembly and output the following process files: script file, executable file, and model file; S6: Calculate using the islight optimization software, based on the product requirements, defined optimization methods, constraints, and optimization objectives; S7: The optimization software performs calculations in 2000 or fewer iterations; S8: Extract the results that satisfy both the perimeter DTS tolerance range and the assembly area tolerance range, and assign them to the 3DCS assembly software; S9: Finally, issue a correction instruction and a virtual lighting and shadow effect diagram; S10: Virtual assembly is performed using 3D data calculated by the Islight optimization software. This allows for early warning, rectification, and avoidance of problems. The virtual lighting and shadows generate zebra stripe patterns to determine the continuity of the curved surface and the trend of the shaped curved surface. Material properties are used to render and verify the best fit before assembly. Combined with the car paint color, it can be displayed in VR.

[0005] Preferably, the system includes a mobile gripping system, which comprises a support frame fixed to the ground. A slide rail is located below the support frame and slidably connected to it. A first support plate, a second support plate, and a robotic arm are slidably connected to the support frame. A first storage unit is located on one side of the support frame, and a second storage unit is located on the other side. The first storage unit stores positioning components. A platform plate is located below the support frame, and rivet plates are slidably connected to the platform plate. Flexible support columns are provided on each rivet plate and movably connected to the flexible support columns. The positioning components are movably connected to the flexible support columns. The first and second support plates are used to store the flexible support columns. The robotic arm pneumatically controls the flexible support columns. The second storage unit is used to store the flexible support columns.

[0006] Preferably, the rivet plate has a plurality of rivet holes, a first rivet is screwed into each rivet hole, the first rivet is movably connected to one end of the flexible support, the flexible support has two ventilation holes on its side wall, the flexible support is a hollow cavity, the upper end of the flexible support has an upper rivet hole, a second rivet is movably connected to the upper rivet hole, the positioning component is screwed onto the top of the second rivet, the top of the first rivet and the second rivet both have arc-shaped grooves around their tops, the lower end of the flexible support has a lower rivet hole, the lower rivet hole is movably connected to the first rivet, an upper spring is sleeved around the outer perimeter of the upper rivet hole, and a lower spring is sleeved around the outer perimeter of the lower rivet hole. An upper limit block is provided below the spring, and a lower limit block is provided above the lower spring. The upper limit block has an upper receiving cavity, and the lower limit block has a lower receiving cavity. Both the upper and lower limit blocks are arranged around the outside of the upper and lower pull pin holes. The upper receiving cavity has an upper slope on its side wall, and an upper limit bead is provided inside the upper receiving cavity, which fits against the upper slope. The lower receiving cavity has a lower slope on its side wall, and a lower limit bead is provided inside the lower receiving cavity, which fits against the lower slope. The upper limit bead is embedded in the arcuate groove of the second pull pin, and the lower limit bead is embedded in the arcuate groove of the first pull pin. Pneumatic components are provided inside the flexible support column.

[0007] Preferably, the pneumatic component is provided with a first output end and a second output end at its upper and lower ends, respectively. The pneumatic component is connected to both of the air vents. An upper push plate is connected above the first output end, and a lower push plate is connected below the second output end. The upper push plate is connected to the upper limit block, and the lower push plate is connected to the lower limit block. The pneumatic component is provided with an air vent.

[0008] Preferably, the upper receiving cavity gradually increases in size from the bottom to the upper opening, and the lower receiving cavity gradually increases in size from the top to the bottom opening.

[0009] Preferably, the first support plate is provided with a third rivet, and the second support plate is provided with a fourth rivet, both of which are movably connected to the flexible support column.

[0010] Preferably, the positioning component includes a base, a connecting block, a support seat, a support rod, a pressure block, and a handle. The two ends of the connecting block are movably connected to the base and the support seat, respectively. The support seat is rotatably connected to the support rod. The support rod is provided with a pressure block and a handle.

[0011] Preferably, the first rivet and the second rivet are provided with limiting plates. Beneficial effects

[0012] This invention provides a digital virtual assembly method and inspection system, which has the following advantages: First, a robotic arm installs a positioning component on a flexible column on a first or second support plate. Second, the robotic arm fixes the flexible column to a rivet base plate as needed. When the positioning component grips the workpiece to be tested, virtual matching analysis of the workpiece is performed using big data, providing automatic early warning for workpiece matching. This significantly reduces manpower and material resources, lowers costs, and improves production efficiency. Virtual matching simulates the real process of parts assembly using software, acquires 3D point cloud data of the parts using a laser scanner, and performs dimensional matching analysis using 3DCS assembly software. Based on the 3D scanning model, under a unified vehicle body coordinate system... Virtual assembly provides functions such as deviation analysis, 3D measurement points, and legend reports. It can intuitively display correlations in 3D within the software. By analyzing and predicting on-site vehicle matching problems through 3D scanning data, it reduces the number and frequency of on-site vehicle verification, shortens the rectification cycle of body matching problems, and provides the final rectification direction of parts through light and shadow simulation. It provides accurate and traceable measurement data support with body coordinate orientation for the final approval of parts. By comparing the advantages and disadvantages of virtual matching and traditional PCF matching methods, virtual matching can completely replace traditional matching methods and has derived virtual light and shadow. Therefore, it can visually perceive the preliminary conclusions 2-3 months in advance and issue guidance and suggestions, making the process more controllable and visual, and guiding rectification conclusions more professional. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a schematic diagram of the support frame of the present invention.

[0014] Figure 3 This is a schematic diagram of the flexible support structure of the present invention.

[0015] Figure 4 This is a cross-sectional view of the flexible support column of the present invention.

[0016] Figure 5 This is a schematic diagram of the flexible support structure of the present invention.

[0017] Figure 6 This is a schematic diagram of the structure of the first pull stud of the present invention.

[0018] In the diagram: 1. Support frame; 2. Robotic arm; 3. First automated storage unit; 4. Positioning component; 5. Platform plate; 6. Rivet plate; 7. Flexible support column; 8. Laser scanner; 9. Rivet hole; 10. First rivet; 11. First support plate; 12. Second support plate; 13. Vent hole; 14. Upper rivet hole; 15. Second rivet; 16. Arc groove; 17. Lower rivet hole; 18. Upper spring; 19. Lower spring; 20. Upper limit block; 21. Lower limit block; 22. Upper container 23. Lower receiving cavity; 24. Upper ramp; 25. Upper limit bead; 26. Lower ramp; 27. Lower limit bead; 28. First output end; 29. ​​Second output end; 30. Upper push plate; 31. Lower push plate; 32. Third pull pin; 33. Fourth pull pin; 401. Base; 402. Connecting block; 403. Support seat; 404. Support rod; 405. Pressure block; 406. Handle; 40. Vent pipe; 41. Limiting plate; 42. Slide rail; 43. Second automated storage unit. Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 This invention provides a technical solution: a method for using a digital virtual assembly inspection system, including a laser scanner (8), wherein the laser scanner (8) acquires 3D point cloud data of parts and performs dimensional matching analysis in conjunction with 3DCS assembly software, the specific steps of which are as follows: S1: Acquire complete 3D data of the part and 3D data of the assembly area through optical measurement; S2: Fit the three-dimensional data of the parts to the measurement coordinate system required by the product using 3DCS assembly software; S3: Define the location of DTS measurement points; S4: The assembly area is the variable, the tolerance is the adjustment amount, and the DTS tolerance is the constraint condition. S5: Complete the above assembly and output the following process files: script file, executable file, and model file; S6: Calculate using the islight optimization software, based on the product requirements, defined optimization methods, constraints, and optimization objectives; S7: The optimization software performs calculations in 2000 or fewer iterations; S8: Extract the results that satisfy both the perimeter DTS tolerance range and the assembly area tolerance range, and assign them to the 3DCS assembly software; S9: Finally, issue a correction instruction and a virtual lighting and shadow effect diagram; S10: Virtual assembly is performed using 3D data calculated by Islight optimization software. This allows for early warning, rectification, and problem avoidance. Virtual lighting and shadows generate zebra stripe patterns to determine the continuity of curved surfaces and the trend of the shaped surfaces. Material property rendering is used to verify the best fit before assembly. Combined with car paint color, this can be displayed via VR. A digital virtual assembly inspection system includes a mobile gripping system. The mobile gripping system includes a support frame 1, which is fixed to the ground. A slide rail 42 is provided below the support frame 1 and slidably connected to it. The support frame 1 is slidably connected to a first support plate 11, a second support plate 12, and a robotic arm 2. A first three-dimensional warehouse is located on one side of the support frame 1. 3. A second automated storage unit 43 is provided on the other side of the support frame 1. The first automated storage unit 3 stores the positioning component 4. A platform plate 5 is provided below the support frame 1. A rivet plate 6 is slidably connected to the platform plate 5. Flexible support columns 7 are provided on the rivet plates 6 and are movably connected to the flexible support columns 7. The positioning component (4) is movably connected to the flexible support column (7). The first support plate 11 and the second support plate 12 are used to store the flexible support column 7. The robotic arm 2 pneumatically controls the flexible support column 7. The second automated storage unit (43) is used to store the flexible column (7). The rivet plate 6 is provided with a plurality of rivet holes 9. A first rivet 10 is screwed onto the rivet hole 9. The first rivet 10 is connected to one end of the flexible support column 7. The flexible support column 7 is connected in a movable manner. Two ventilation holes 13 are provided on the side wall of the flexible support column 7. The flexible support column 7 has a hollow cavity inside. An upper pull pin hole 14 is provided at the upper end of the flexible support column 7, and a second pull pin 15 is movably connected to the upper pull pin hole 14. The positioning component 4 is screwed onto the top of the second pull pin 15. Arc-shaped grooves 16 are provided around the top of both the first pull pin 10 and the second pull pin 15. A lower pull pin hole 17 is provided at the lower end of the flexible support column 7, and the lower pull pin hole 17 is movably connected to the first pull pin 10. An upper spring 18 is sleeved around the outer perimeter of the upper pull pin hole 14, and a lower spring 19 is sleeved around the outer perimeter of the lower pull pin hole 17. An upper limit block 20 is provided below the upper spring 18, and a lower limit block 21 is provided above the lower spring 19. The upper receiving cavity 22 is provided in the upper limiting block 20, and the lower limiting block 21 is provided in the lower receiving cavity 23. The upper limiting block 20 and the lower limiting block 21 are both arranged around the outside of the upper pull pin hole 14 and the lower pull pin hole 17. The side wall of the upper receiving cavity 22 has an upper slope 24, and the upper limiting bead 25 is provided in the upper receiving cavity 22. The upper limiting bead 25 is in contact with the upper slope 24. The side wall of the lower receiving cavity 23 has a lower slope 26, and the lower receiving cavity 23 is provided in the lower limiting bead 27. The lower limiting bead 27 is in contact with the lower slope 26. The upper limiting bead 25 is embedded in the arc groove 16 of the second pull pin 15, and the lower limiting bead 27 is embedded in the arc groove 16 of the first pull pin 10. The flexible support column 7 is provided with pneumatic components.The pneumatic component has a first output end 28 and a second output end 29 at its upper and lower ends, respectively. The pneumatic component is simultaneously connected to two air vents 13. An upper push plate 30 is connected above the first output end 28, and a lower push plate 31 is connected below the second output end 29. The upper push plate 30 is connected to the upper limit block 20, and the lower push plate 31 is connected to the lower limit block 21. The pneumatic component is equipped with an air vent 40. The upper receiving cavity 22 gradually increases in size from bottom to top, and the lower receiving cavity 23 gradually increases in size from top to bottom. A third pull stud 32 is provided on the first support plate 11, and a fourth pull stud 33 is provided on the second support plate 12. Both the third pull stud 32 and the fourth pull stud 33 are movably connected to the flexible support column 7. The positioning assembly 4 includes a base 401, a connecting block 402, a support seat 403, a support rod 404, and a pressure block 405. The connecting block 402 has a handle 406, and its two ends are movably connected to the base 401 and the support 403, respectively. The support 403 is rotatably connected to the support rod 404. The support rod 404 is provided with a pressure block 405 and a handle 406. The first pull stud 10 and the second pull stud 15 are provided with limiting plates 41.

[0021] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0022] Example 1: When using this system and method for virtual assembly, firstly, a positioning component 4 matching the item to be measured is set in the automated storage and retrieval system 3. The positioning component 4 can be made in different sizes and specifications according to the workpiece to be measured, so as to be suitable for different workpieces and facilitate gripping. Secondly, the robotic arm 2 slides on the support frame 1 through program control. The robotic arm 2 takes the flexible support column 7 out of the automated storage and retrieval system 43 and fixes it on the first support plate 11 for later use. When installing the positioning component 4, it slides to the side of the automated storage and retrieval system 3. The flexible support column 7 on the first support plate 11 is gripped by the ventilation control inside the robotic arm 2. The robotic arm 2 vents the interior through the ventilation hole 13 on the side wall of the flexible support column 7, so that the second output end 29 pushes the lower limit block 2 by pushing the lower push plate 31. 1. Moving away from the first support plate 11, due to the downward slope 26 in the lower receiving cavity 23, the lower limit bead 27 in the lower receiving cavity 23 will disperse within the lower receiving cavity 23, thereby causing the lower limit bead 27 to disengage from the arc groove 16 of the third pull stud 32 on the first support plate 11, and thus causing the flexible support column to detach from the first support plate 11. Next, the robotic arm 2 clamps the flexible support column to the side of the positioning component 4 and the three-dimensional storage 3, and cuts off the air supply to control the flexible support column, so that the positioning component 4 is installed in the upper pull stud hole 14 of the flexible support column through the positioning pull stud. Since the upper pull stud hole 14 is fitted with an upper spring 18, the upper spring 18 has a downward reaction force after being squeezed and the air supply is cut off, causing the upper spring 18 to push the upper limit bead 25 of the upper receiving cavity 22 in the upper block along the upper... The ramp 24 moves, and the upper limit bead 25 in the upper limit block 20 is limited and locked by the arc groove 16 on the positioning rivet, so as to fix the positioning component 4 on the flexible support 7. Then, the robotic arm 2 clamps the flexible support to the position of the second support plate 12. The robotic arm 2 pneumatically controls the flexible support, and the air is cut off inside through the vent hole 13 on the side wall of the flexible support 7. The flexible support with the positioning component 4 placed is fixed on the second support plate 12 through the pull pin hole 17 for storage and clamping. When measuring the part, the robotic arm 2 pneumatically controls the flexible support to remove the flexible support from the second support plate 12 and pneumatically fix it on the rivet plate 6. The part to be measured is fixed with the pressure block by pressing down the handle 406 through the positioning component 4. The system is fixed and used for inspection. Upon arrival at the test location in the virtual assembly system, complete 3D data of the part and the 3D data of the assembly area are acquired via optical measurement. Simultaneously, 3DCS assembly software fits the part's 3D data to a measurement coordinate system required by the product, defining DTS measurement point positions for matching and optimization reference targets. The assembly area is used as a variable, the tolerance as the adjustment amount, and the DTS tolerance as a constraint. After completing the assembly, process files are output: script file, execution file, and model file. Using Islight optimization software, calculations are performed based on the defined optimization methods, constraints, and optimization objectives according to the product requirements. The optimization software performs 2000 or fewer iterations to obtain the adjustment amounts.Then, results that satisfy both the peripheral DTS tolerance range and the assembly area tolerance range are extracted and applied to the 3DCS assembly software to obtain the final adjustment effect, achieve optimal assembly, and finally generate a correction instruction sheet and a virtual lighting and shadow effect diagram. Finally, virtual assembly is performed using 3D data calculated by the Islight optimization software. This allows for early warning of rectification and avoidance of problem points. The generated virtual lighting and shadow pattern produces zebra stripes to determine the continuity of the curved surface and the trend of the shaped curved surface. Material property rendering is used to verify the best fit assembly. Combined with the car paint color, it can be displayed in VR, providing pre-visual guidance for the matching effect after rectification. In summary, based on the required workpiece assembly process, assembly analysis is performed in the virtual matching software to simulate the overall assembly process, thereby guiding the overall assembly process quality. This replaces the previous manual measurement method, reducing labor costs and ultimately achieving digital virtual matching to guide matching rectification.

[0023] Example 2: When the gaps between the windshield and the left and right side panels of the vehicle body are inconsistent, the gaps are smaller on the upper side and larger on the lower side, and the gaps on the left and right sides are different, affecting the appearance. The traditional solution is to take windshields from the same batch and verify them multiple times on CUBING. If the problem is the same, take windshields from different recent batches for verification and require the supplier to verify the dimensions. If the dimensions are incorrect, the supplier needs to return the windshields to the factory for repair. If the windshield is verified to be fine on CUBING, the vehicle body needs to be verified. The vehicle body is measured and a rectification plan is confirmed. Therefore, the problem is that there are issues during the verification process. Errors in manual measurement and component installation necessitate multiple matching processes, resulting in high costs and impacting the overall vehicle assembly schedule. The digital assembly solution addresses this by using a system to select the left and right front side panel sheet metal clamps, and then employing a robotic arm to install modules onto a mobile, universal work platform. After acquiring 3D data of the windshield using an optical inspection system, virtual installation and matching are performed under a digital virtual assembly and inspection system. A problem analysis report is generated on-site, showcasing the issues and solutions. This proactive approach, adjusting components according to the rectification plan in the early stages, prevents problems from recurring, improves work efficiency, and reduces cost losses.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method of using a digital virtual assembly inspection system, characterized in that, The system includes a laser scanner (8), which acquires 3D point cloud data of the part and performs dimensional matching analysis in conjunction with 3DCS assembly software. The specific steps are as follows: S1: Acquire complete 3D data of the part and 3D data of the assembly area through optical measurement; S2: Fit the three-dimensional data of the parts to the measurement coordinate system required by the product using 3DCS assembly software; S3: Define the location of DTS measurement points; S4: The assembly area is the variable, the tolerance is the adjustment amount, and the DTS tolerance is the constraint condition. S5: Complete the above assembly and output the following process files: script file, executable file, and model file; S6: Calculate using the islight optimization software, based on the product requirements, defined optimization methods, constraints, and optimization objectives; S7: The optimization software performs calculations in 2000 or fewer iterations; S8: Extract the results that satisfy both the perimeter DTS tolerance range and the assembly area tolerance range, and assign them to the 3DCS assembly software; S9: Finally, issue a correction instruction and a virtual lighting and shadow effect diagram; S10: Virtual assembly is performed using 3D data calculated by the Islight optimization software. This allows for early warning, rectification, and avoidance of problems. The virtual lighting and shadows generate zebra stripe patterns to determine the continuity of the curved surface and the trend of the shaped curved surface. Material properties are used to render and verify the best fit before assembly. Combined with the car paint color, it can be displayed in VR.

2. A digital virtual assembly and inspection system, characterized in that, The system includes a mobile grasping system, which comprises a support frame (1) fixed to the ground. A slide rail (42) is provided below the support frame (1) and slidably connected to it. A first support plate (11), a second support plate (12), and a robotic arm (2) are slidably connected to the support frame (1). A first automated storage unit (3) is located on one side of the support frame (1), and a second automated storage unit (43) is located on the other side. The first automated storage unit (3) stores positioning components (4). The support frame (1) is provided with a platform plate (5) below it. A rivet plate (6) is slidably connected to the platform plate (5). A flexible support column (7) is provided on each of the rivet plates (6) and is movably connected to the flexible support column (7). The positioning component (4) is movably connected to the flexible support column (7). The first support plate (11) and the second support plate (12) are used to store the flexible support column (7). The robotic arm (2) pneumatically controls the flexible support column (7). The second automated storage unit (43) is used to store the flexible column (7).

3. The digital virtual assembly and inspection system according to claim 2, characterized in that, The rivet plate (6) has several rivet holes (9), and a first rivet (10) is screwed onto each rivet hole (9). The first rivet (10) is movably connected to one end of the flexible support column (7). The side wall of the flexible support column (7) has two ventilation holes (13). The flexible support column (7) has a hollow cavity inside. The upper end of the flexible support column (7) has an upper rivet hole (14), and a second rivet (15) is movably connected to the upper rivet hole (14). The second rivet (15) is topped with... The positioning component (4) is screwed onto the part. The top circumference of both the first pull stud (10) and the second pull stud (15) is provided with arc-shaped grooves (16). The lower end of the flexible support column (7) is provided with a pull-down pin hole (17), which is movably connected to the first pull stud (10). An upper spring (18) is sleeved around the outer perimeter of the upper pull stud hole (14), and a lower spring (19) is sleeved around the outer perimeter of the pull-down pin hole (17). An upper limit block is provided below the upper spring (18). 20), a lower limiting block (21) is provided above the lower spring (19), an upper receiving cavity (22) is provided inside the upper limiting block (20), and a lower receiving cavity (23) is provided inside the lower limiting block (21). The upper limiting block (20) and the lower limiting block (21) are both arranged around the outside of the upper pull pin hole (14) and the lower pull pin hole (17). The side wall of the upper receiving cavity (22) has an upper slope (24). An upper limiting bead (25) is provided inside the upper receiving cavity (22). (25) is in contact with the upper slope (24), the lower receiving cavity (23) has a lower slope (26) on its side wall, the lower receiving cavity (23) is provided with a lower limiting bead (27), the lower limiting bead (27) is in contact with the lower slope (26), the upper limiting bead (25) is embedded in the arc groove (16) of the second pull stud (15), the lower limiting bead (27) is embedded in the arc groove (16) of the first pull stud (10), and the flexible support is provided with pneumatic components.

4. The digital virtual assembly and inspection system according to claim 3, characterized in that, The pneumatic component has a first output end (28) and a second output end (29) at its upper and lower ends, respectively. The pneumatic component is connected to both of the air vents (13). An upper push plate (30) is connected above the first output end (28), and a lower push plate (31) is connected below the second output end (29). The upper push plate (30) is connected to the upper limit block (20), and the lower push plate (31) is connected to the lower limit block (21). The pneumatic component is provided with an air vent (40).

5. The digital virtual assembly and inspection system according to claim 3, characterized in that, The upper cavity (22) gradually increases in size from the bottom to the top opening, and the lower cavity (23) gradually increases in size from the top to the bottom opening.

6. The digital virtual assembly and inspection system according to claim 2, characterized in that, The first support plate (11) is provided with a third rivet (32), and the second support plate (12) is provided with a fourth rivet (33). Both the third rivet (32) and the fourth rivet (33) are movably connected to the flexible support column (7).

7. A digital virtual assembly and inspection system according to claim 2, characterized in that... The positioning component (4) includes a base (401), a connecting block (402), a support seat (403), a support rod (404), a pressure block (405), and a handle (406). The two ends of the connecting block (402) are movably connected to the base (401) and the support seat (403) respectively. The support seat (403) is rotatably connected to the support rod (404). The support rod (404) is provided with a pressure block (405) and a handle (406).

8. The digital virtual assembly and inspection system according to claim 3, characterized in that, The first rivet (10) and the second rivet (15) are provided with limiting plates (41).

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