White body rear wall matching device and matching method

Abstract

The present application relates to a kind of body-in-white rear wall matching devices, body-in-white rear wall matching device is used to match rear wall outer plate and rear wall reinforcing beam, body-in-white rear wall matching device includes pedestal, first positioning assembly and second positioning assembly, first positioning assembly is fixedly installed on pedestal, and first positioning assembly is configured to support rear wall outer plate;Second positioning assembly is provided on pedestal, second positioning assembly is used to support rear wall reinforcing beam, and make rear wall reinforcing beam and rear wall outer plate in second direction fit arrangement;Second positioning assembly includes measuring block, measuring block and rear wall outer plate are gap arrangement in first direction, to measure the gap between measuring block and rear wall outer plate;First direction and second direction intersect.It can be directly judged on matching device the matching state between rear wall reinforcing beam and rear wall outer plate, without needing to place parts on welding fixture, so that when judging the matching state between the two, the relevant station of welding can normally operate, avoid occupying production resources.

Description

Technical Field

[0001] This invention relates to the field of body-in-white matching technology, and in particular to a body-in-white rear panel matching device and matching method. Background Technology

[0002] The body-in-white matching process for commercial vehicles refers to the adaptive verification of matching surfaces such as lap surfaces, mating surfaces, and contour surfaces between parts through process methods to improve the dimensional accuracy of the body-in-white. The matching process involves the adjustment of fixtures and the correction of stamped parts. Compared with adjusting the positioning of fixtures, correcting stamped parts has a longer rectification cycle and higher mold modification costs. However, sometimes the dimensional condition of stamped parts is poor, and it is not possible to produce a qualified assembly by adjusting the fixture alone. Therefore, the matching process is particularly important for ensuring the dimensional qualification of the assembly and reducing the need for part correction.

[0003] In existing technologies, determining the matching status between parts often requires placing the parts on welding fixtures, which necessitates stopping the production line at relevant stations and consuming production resources. Summary of the Invention

[0004] Therefore, it is necessary to provide a body-in-white rear panel matching device to address the issue of production resources being consumed when determining the matching status between parts.

[0005] A body-in-white rear panel matching device, the body-in-white rear panel matching device being used to match the rear panel outer plate with the rear panel reinforcing beam, characterized in that the body-in-white rear panel matching device comprises:

[0006] Base;

[0007] A first positioning component is fixedly mounted on the base and configured to support the rear outer panel.

[0008] The second positioning component is disposed on the base and is used to support the rear reinforcing beam and to make the rear reinforcing beam fit against the rear outer plate in the second direction.

[0009] The second positioning component includes a measuring block, which is spaced apart from the rear outer panel in a first direction to measure the gap between the measuring block and the rear outer panel;

[0010] The first direction intersects with the second direction.

[0011] In one embodiment, the rear reinforcing beam is provided with a first positioning hole;

[0012] The second positioning component also includes a reinforcing beam positioning column extending along the first direction;

[0013] The reinforcing beam positioning column is inserted into and adapted to the first positioning hole.

[0014] In one embodiment, the bottom of the second positioning component is provided with a slide table, the base is provided with a slide rail along the first direction, and the slide table is movably mounted on the slide rail.

[0015] In one embodiment, the base is provided with a first limiting member located at the bottom of the slide, and the slide is provided with a second limiting member;

[0016] After the slide table moves to the preset position, the first limiting member and the second limiting member are detachably connected to restrict the slide table from continuing to move.

[0017] In one embodiment, the base is provided with third limiting members at both ends in the direction of movement of the slide table;

[0018] The third limiting member can abut against the slide in the direction of movement of the slide to limit the range of movement of the slide.

[0019] In one embodiment, the second positioning component further includes a first clamping device and a first positioning block, wherein the first clamping device is mounted on the first positioning block;

[0020] The first clamping device is configured to clamp the rear reinforcing beam to apply a clamping force to the rear reinforcing beam in the first direction so that the rear reinforcing beam is fitted to the first positioning block in the first direction.

[0021] In one embodiment, the body-in-white rear panel matching device is further used to match the rear panel longitudinal beam with the rear panel reinforcing beam, wherein the rear panel longitudinal beam is provided with a second positioning hole;

[0022] The body-in-white rear panel matching device also includes a third positioning component, which includes a rear longitudinal beam positioning column and a second clamping device.

[0023] The rear longitudinal beam positioning post extends along the second direction, and the rear longitudinal beam positioning post is inserted into the second positioning hole.

[0024] The second clamping device is used to clamp and fix the rear longitudinal beam.

[0025] A method for matching the rear bulkhead of a white body, the method comprising the following steps:

[0026] Provide a body-in-white rear panel matching device as described above;

[0027] Install the rear outer panel onto the first positioning assembly, and install the rear reinforcing beam onto the second positioning assembly; measure the first gap value between the rear outer panel and the measuring block in the first direction, and measure the second gap value between the rear outer panel and the rear reinforcing beam in the second direction;

[0028] Adjust the matching degree between the rear outer panel and the rear reinforcing beam according to the first gap value and the second gap value;

[0029] Remove the rear outer panel and install the rear longitudinal beam onto the third positioning assembly; measure the third gap value between the rear longitudinal beam and the rear reinforcing beam in the first direction;

[0030] Adjust the matching degree between the rear longitudinal beam and the rear reinforcing beam according to the third gap value.

[0031] In one embodiment, after adjusting the matching degree between the rear outer panel and the rear reinforcing beam and adjusting the matching degree between the rear longitudinal beam and the rear reinforcing beam, the first gap value between the rear outer panel and the measuring block in the first direction, the second gap value between the rear outer panel and the rear reinforcing beam in the second direction, and the third gap value between the rear longitudinal beam and the rear reinforcing beam in the first direction are measured again.

[0032] Check whether the first gap value, the second gap value, and the third gap value measured again are qualified;

[0033] If the gap is not qualified, the matching degree between the rear outer panel and the rear reinforcing beam and the matching degree between the rear longitudinal beam and the rear reinforcing beam shall be adjusted according to the first gap value, the second gap value and the third gap value measured again, until the first gap value, the second gap value and the third gap value are qualified.

[0034] In one embodiment, adjusting the matching degree between the rear outer panel and the rear reinforcing beam according to the first gap value and the second gap value includes:

[0035] Determine the theoretical clearance value between the rear outer panel and the measuring block in the first direction, and obtain the absolute value of the difference between the theoretical clearance value and the first clearance value. Compare the absolute value with a first tolerance. If the absolute value is less than the first tolerance, the first clearance value is acceptable; if the absolute value is greater than the first tolerance, adjust the dimensions of the stamping die according to the first clearance value and the second clearance value; and / or

[0036] The step of adjusting the matching degree between the rear outer panel and the rear reinforcing beam according to the first gap value and the second gap value includes:

[0037] Measure and record the first positioning gap value between the rear outer panel and the rear reinforcing beam in the second direction at the positioning post of the reinforcing beam;

[0038] Determine the size of the second gap value and the second tolerance. If the second gap value is less than the second tolerance, then the second gap value is acceptable.

[0039] If the second gap value is greater than the second tolerance, then determine the difference between the actual overlap height of the welding surface of the rear reinforcing beam and the side wall in the second direction and the minimum required height of the welding surface. If the actual overlap height is greater than the minimum required height of the welding surface, then adjust the fixture positioning by the amount of the adjustment being the first positioning gap value; if the actual overlap height is less than the minimum required height of the welding surface, then modify the stamping die; and / or

[0040] The step of adjusting the matching degree between the rear longitudinal beam and the rear reinforcing beam according to the third gap value includes:

[0041] Measure the second positioning gap value between the rear longitudinal beam and the rear reinforcing beam at the positioning post of the rear longitudinal beam in the first direction;

[0042] Determine the magnitude of the third gap value and the third tolerance. If the third gap value is greater than the third tolerance, then correct the stamping die. If the third gap value is less than the third tolerance, then adjust the fixture positioning, and the adjustment amount is the second positioning gap value.

[0043] The aforementioned body-in-white rear panel matching device includes a base, a first positioning component, and a second positioning component. Both the first and second positioning components are mounted on the base. The second positioning component includes a measuring block, which is spaced apart from the rear panel in a first direction.

[0044] When installing the rear outer panel and the rear reinforcing beam, the rear outer panel is supported on the first positioning component. At this time, the measuring block on the second positioning component has a certain gap with the rear outer panel in the first direction. The operator measures the gap between the rear outer panel and the measuring block. Based on the relationship between the measured gap value and the preset value, it is determined whether the rear outer panel needs to be corrected. The rear reinforcing beam is then installed on the second positioning component. At this time, the rear reinforcing beam and the rear outer panel should be fitted together in the second direction. The operator measures the gap between the rear reinforcing beam and the rear outer panel in the second direction. Based on the gap value, it is determined whether the positioning of the welding fixture for the rear reinforcing beam needs to be adjusted, or whether the rear reinforcing beam needs to be corrected.

[0045] The body-in-white rear panel matching device provided in this application can directly determine the matching status between the rear panel reinforcing beam and the rear panel outer panel on the matching device itself, without having to place the parts on the welding fixture. Thus, when determining the matching status between the rear panel reinforcing beam and the rear panel outer panel, the relevant welding stations can operate normally, avoiding the occupation of production resources. Attached Figure Description

[0046] Figure 1 A schematic diagram of the structure of the body-in-white rear panel matching device provided by the present invention;

[0047] Figure 2 A schematic diagram of the matching of the rear bulkhead assembly of the body-in-white rear bulkhead matching device provided by the present invention;

[0048] Figure 3 A schematic diagram of the structure of the second positioning component of the body-in-white rear panel matching device provided by the present invention;

[0049] Figure 4 A schematic diagram of the third positioning component of the body-in-white rear panel matching device provided by the present invention;

[0050] Figure 5 A schematic diagram of the matching device for the rear panel of the body-in-white provided by the present invention;

[0051] Figure 6 A schematic diagram of the matching of the rear longitudinal beam and the rear reinforcing beam of the body-in-white rear panel matching device provided by the present invention;

[0052] Figure 7 A side view of the rear assembly of the body-in-white rear panel matching device provided by the present invention.

[0053] In the diagram: 1. Base; 2. First positioning component; 3. Second positioning component; 4. Third positioning component; 5. Rear outer panel; 6. Rear reinforcing beam; 7. Rear longitudinal beam; 8. Reinforcing beam bracket; 9. Flip block; 10. Reinforcing beam positioning post; 11. Measuring block; 12. Limiting block; 13. First locking knob; 14. Mounting platform; 15. Second locking knob; 16. Side panel; 17. Slide table; 18. Slide rail; 19. Slider; 20. First limiting component; 21. ... 21. Limiting component; 22. Limiting seat; 23. Pin hole; 24. Third limiting component; 25. First clamping device; 26. First positioning block; 27. Connecting rod; 28. Clamping component; 29. ​​Rear longitudinal beam positioning post; 30. Longitudinal beam bracket; 31. Second positioning block; 32. Third positioning block; 33. Fourth positioning block; 34. Third locking knob; 35. Clamping device; 36. Pull rod; 37. Fourth locking knob; 38. Fifth locking knob; 39. Sixth locking knob. Detailed Implementation

[0054] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0060] This application provides a body-in-white rear panel matching device, see reference. Figures 1-7 The body-in-white rear panel matching device is used to match the rear panel 5 with the rear reinforcing beam 6. In some embodiments, the body-in-white rear panel matching device includes a base 1, a first positioning component 2, and a second positioning component 3. The first positioning component 2 is fixedly installed on the base 1 and is configured to support the rear panel 5. The second positioning component 3 is disposed on the base 1 and is used to support the rear reinforcing beam 6 and to make the rear reinforcing beam 6 and the rear panel 5 fit together in a second direction. The second positioning component 3 includes a measuring block, which is spaced apart from the rear panel 5 in the first direction to measure the gap between the measuring block and the rear panel 5. The first direction intersects with the second direction.

[0061] Specifically, the first direction is Figure 2 The Y direction in the middle, the second direction is Figure 6 In the X direction, the rear reinforcing beam 6 has an L-shaped structure, the base 1 has a cuboid structure, the first positioning component 2 includes a rear outer panel bracket and a positioning element. The positioning element is located at the upper end of the rear outer panel bracket, and the top surface of the positioning element is the positioning surface of the rear outer panel 5 in the X direction. Six first positioning components 2 are evenly distributed on the base 1. When the rear outer panel 5 is supported on the six first positioning components 2, the positioning surfaces of the six first positioning components 2 are all in contact with the corresponding positions on the bottom surface of the rear outer panel 5. That is, the shape of the positioning surfaces of the six first positioning components 2 is set according to the shape of the bottom surface of the corresponding rear outer panel 5.

[0062] The second positioning component 3 includes a reinforcing beam support 8, a tilting block 9, and a measuring block 11. The reinforcing beam support 8 is located on the upper surface of the base 1, and the tilting block 9 can rotate around... Figure 6 The rotating block 9 is rotatably mounted on the top of the reinforcing beam bracket 8 in the Z direction. The bottom of the rotating block 9 on the side away from the rear outer panel 5 is provided with a limiting block 12. The maximum rotation angle of the rotating block 9 can be limited to 90 degrees by the limiting block 12. The rotating block 9 is provided with a first locking knob 13. The top of the rotating block 9 is fixedly connected to the measuring block 11.

[0063] Four second positioning components 3 are respectively arranged in pairs on both sides of the base 1 in the Y direction, and the two second positioning components 3 on the same side are spaced apart in the Z direction. The measuring blocks 11 on the four second positioning components 3 are respectively arranged parallel to the side of the corresponding rear outer panel 5. That is, the overall orientation of the two measuring blocks 11 on the same side in the Z direction is the same as the orientation of the side of the rear outer panel 5 near the measuring block 11 in the Z direction, and the overall length of the two measuring blocks 11 on the same side is greater than or equal to one-quarter of the side length of the rear outer panel 5.

[0064] When installing the rear outer panel 5 and the rear reinforcing beam 6, the rear outer panel 5 is supported on the six first positioning components 2, and the bottom surface of the rear outer panel 5 is respectively attached to the positioning surfaces of the six first positioning components 2; the rear reinforcing beam 6 is supported on the second positioning component 3.

[0065] After the rear outer panel 5 and the rear reinforcing beam 6 are installed onto the first positioning component 2 and the second positioning component 3 respectively, there is a gap between the two sides of the rear outer panel 5 and the measuring block 11 in the Y direction. The operator sets the preset value and the first tolerance of the gap between the rear outer panel 5 and the measuring block 11. Along the Z direction, a measuring point is set every 50mm-200mm. The first gap value between the rear outer panel 5 and the measuring block 11 in the Y direction is measured at each measuring point. The measured first gap value is compared with the preset value. The preset value can be fixed at 3mm-5mm. If the absolute value of the difference between the first gap value and the preset value is greater than the first tolerance, the size of the stamping die of the rear outer panel 5 is corrected to the range of the first tolerance.

[0066] After installation, the rear reinforcing beam 6 is located above the rear outer panel 5, and the top surface of the rear outer panel 5 and the bottom surface of the rear reinforcing beam 6 should theoretically fit together in the X direction. The staff sets the second tolerance for the fit between the rear outer panel 5 and the rear reinforcing beam 6 in the X direction, and sets measuring points along the Z direction according to the overlap. At least two measuring points are set at the curvature transition points of the surface, and one measuring point is set every 50mm-200mm at the continuous curvature points of the surface. The theoretical overlap height of the welding surfaces of the rear reinforcing beam 6 and the side panel 16 in the X direction at the measuring points is set, as well as the minimum height required for the welding surfaces of the two. The side panel 16 is a part located on the right side of the rear reinforcing beam 6 and welded to the vertical end face of the rear reinforcing beam 6. During the matching process, the side panel 16 is set to the theoretical position.

[0067] Measure the second gap value between the rear outer panel 5 and the rear reinforcing beam 6 in the X direction at the measuring point, and determine the relationship between the second gap value and the second tolerance. If the second gap value is less than the second tolerance, then the second gap value is qualified.

[0068] If the second gap value is greater than the second tolerance, the difference between the theoretical overlap height and the second gap value at each measuring point is calculated, and the difference between the two and the minimum height required for the welding surface is determined. If it is less than the minimum height required for the welding surface, since the rear outer panel 5 and the first positioning component 2 are in contact in the X direction, the rear outer panel 5 is in the theoretical position in the X direction, and the second gap value reflects the dimensional deviation of the rear reinforcing beam 6 in the X direction. Therefore, the position of the reinforcing beam positioning pin on the fixture in the X direction is adjusted. If the difference between the theoretical overlap height and the second gap value is greater than the minimum height required for the welding surface, the profile of the rear reinforcing beam 6 and the rear welding surface at the local out-of-tolerance position or the profile of the rear reinforcing beam 6 and the side panel 16 welding surface is corrected.

[0069] The body-in-white rear panel matching device provided in this application can directly determine the matching status between the rear panel reinforcing beam 6 and the rear panel outer plate 5 on the matching device, without having to place the parts on the welding fixture. Thus, when determining the matching status between the rear panel reinforcing beam 6 and the rear panel outer plate 5, the relevant welding stations can operate normally, avoiding the occupation of production resources.

[0070] The uniform distribution of six first positioning components 2 on the base 1 can make the rear outer panel 5 bear the force evenly and avoid the deformation of the rear outer panel 5 due to gravity. Optionally, other numbers of first positioning components 2 can be set, or the first positioning components 2 can be set unevenly on the base 1.

[0071] The overall length of the two measuring blocks 11 on the same side is greater than or equal to one-quarter of the side length of the rear outer panel 5, which can increase the number of positions where measuring points can be set, thereby improving the matching accuracy. Optionally, the length of the measuring block 11 can also be set according to requirements.

[0072] Alternatively, other suitable measuring point distances and numbers can be selected according to requirements.

[0073] In some embodiments, the rear reinforcing beam 6 is provided with a first positioning hole;

[0074] The second positioning component 3 also includes a reinforcing beam positioning column 10 extending along the first direction;

[0075] The reinforcing beam positioning column 10 is inserted and adapted to the first positioning hole.

[0076] Specifically, the reinforcing beam positioning post 10 is located inside the mounting platform 14 at the top of the flipping block 9. The reinforcing beam positioning post 10 is connected to the second locking knob 15. When installing the rear outer panel 5 and the rear reinforcing beam 6, the rear outer panel 5 is supported on the six first positioning components 2, and the bottom surface of the rear outer panel 5 is respectively attached to the positioning surfaces of the six first positioning components 2. Tighten the second locking knob 15 to fix the reinforcing beam positioning post 10. At this time, the axis of the reinforcing beam positioning post 10 is parallel to the Y direction. Flip the flipping block 9 backward and support it on the limiting block 12. At this time, the axis of the reinforcing beam positioning post 10 is parallel to the X direction. Insert the two first positioning holes of the rear reinforcing beam 6 into the reinforcing beam positioning posts 10 on the two second positioning components 3 respectively. Rotate the flipping block 9 to drive the rear reinforcing beam 6 closer to the rear outer panel 5 until the flipping block 9 is in a vertical state. Tighten the first locking knob 13 to fix the flipping block 9 so that the rear reinforcing beam 6 is in the designated position.

[0077] When matching the rear reinforcing beam 6 and the rear outer panel 5, measure the second gap value between the rear outer panel 5 and the rear reinforcing beam 6 in the X direction at the measuring point. The gap corresponding to the reinforcing beam positioning column 10 is recorded as the first positioning gap value. Determine the relationship between the second gap value and the second tolerance. If the second gap value is less than the second tolerance, then the second gap value is qualified.

[0078] If the second gap value is greater than the second tolerance, the difference between the theoretical overlap height and the second gap value at each measuring point is calculated, and the difference between the two and the minimum height required for the welding surface is determined. If it is less than the minimum height required for the welding surface, since the rear outer panel 5 and the first positioning component 2 are in contact in the X direction, the rear outer panel 5 is in the theoretical position in the X direction. The second gap value reflects the dimensional deviation of the rear reinforcing beam 6 in the X direction. Therefore, the position of the reinforcing beam positioning pin on the fixture in the X direction is adjusted. During welding, the reinforcing beam positioning pin is inserted into the first positioning hole on the rear reinforcing beam 6. Since the fixture and the second positioning component 3 are designed according to the theoretical position, the adjustment amount of the reinforcing beam positioning pin on the fixture is the first positioning gap value at the corresponding reinforcing beam positioning column 10. If the difference between the theoretical overlap height and the second gap value is greater than the minimum height required for the welding surface, the profile of the rear reinforcing beam 6 and the rear welding surface at the local out-of-tolerance position or the profile of the rear reinforcing beam 6 and the side panel 16 welding surface is corrected.

[0079] The reinforcing beam positioning column 10 can support the rear reinforcing beam 6 and makes it easier to know the adjustment amount when adjusting the clamp, thus improving the matching and adjustment efficiency.

[0080] The second positioning component 3 is equipped with a flipping block 9, which facilitates the installation of the rear reinforcing beam 6 and avoids interference between the rear reinforcing beam 6 and the rear outer panel 5 during installation.

[0081] In some embodiments, the bottom of the second positioning component 3 is provided with a slide table 17, and the base 1 is provided with a slide rail 18 along the first direction, and the slide table 17 is movably mounted on the slide rail 18.

[0082] Specifically, a slide table 17 is connected to the bottom of two second positioning components 3 on the same side in the Y direction. Three slide rails 18 are arranged at intervals below the slide table 17 on the base 1. The slide table 17 is connected to the three slide rails 18 respectively through a slider 19, and the slide table 17 can move along the Y direction on the slide rails 18.

[0083] When the rear outer panel 5 is installed on the first positioning component 2, the slide table 17 is moved away from the first positioning component 2, which will drive the second positioning component 3 away from the first positioning component 2, thereby avoiding interference between the rear outer panel 5 and the second positioning component 3 when the rear outer panel 5 is installed. After the rear reinforcing beam 6 is installed on the second positioning component 3, the operator pushes the slide table 17 to move closer to the first positioning component 2 so that the rear reinforcing beam 6 is in the matching position with the rear outer panel 5, that is, above the rear outer panel 5.

[0084] By setting up the slide table 17 and the slide rail 18, the installation space of the rear outer panel 5 can be expanded to facilitate the installation of the rear outer panel 5. At the same time, it can accommodate rear outer panels 5 of different sizes and improve the applicability of the matching device.

[0085] Since the two second positioning components 3 are connected to the same slide 17, setting three spaced slide rails 18 can improve the support force of the slide rails 18 on the slide 17 and maintain the balance of the slide 17 during movement. Optionally, other numbers of slide rails 18 can also be set.

[0086] Optionally, two second positioning components 3 can be connected to a slide 17 respectively.

[0087] In some embodiments, the base 1 is provided with a first limiting member 20 located at the bottom of the slide 17, and the slide 17 is provided with a second limiting member 21;

[0088] After the slide table 17 moves to the preset position, the first limiting member 20 and the second limiting member 21 are detachably connected to restrict the slide table 17 from continuing to move.

[0089] Specifically, each slide rail 18 on the base 1 is provided with a U-shaped limiting seat 22. The slide table 17 is located in the groove of the limiting seat 22. The first limiting member 20 is a positioning pin sleeve provided at the bottom of the groove of the limiting seat 22. The slide table 17 is provided with a pin hole 23 at the position corresponding to the positioning pin sleeve. At least two positioning pin sleeves are spaced apart along the Y direction at the bottom of the groove, and multiple positioning pin sleeves on two adjacent limiting seats 22 are provided in a one-to-one correspondence. The second limiting member 21 is the positioning pin of the slide table 17. The positioning pin of the slide table 17 can pass through the pin hole 23 and be inserted and engaged with the positioning pin sleeve.

[0090] By setting positioning pin sleeves and pin holes 23, the second positioning component 3 can be fixed on the limiting seat 22, thereby maintaining the stability of the rear reinforcing beam 6 during the matching process. The multiple positioning pin sleeves on the two adjacent limiting seats 22 are set one-to-one, which can keep the two second positioning components 3 on the same side vertical in the Z direction when fixing the second positioning component 3. In addition, setting multiple positioning pin sleeves allows the staff to select the fixing position of the second positioning component 3 according to the size of the rear outer panel 5, which expands the applicability of the matching device while ensuring the stability of the second positioning component 3 during matching.

[0091] Optionally, the number of other limit seats 22 and positioning pin sleeves can also be set according to requirements.

[0092] In some embodiments, the base 1 is provided with third limiting members at both ends in the moving direction of the slide table 17;

[0093] The third limiting member 24 can abut against the slide 17 in the moving direction of the slide 17 to limit the moving range of the slide 17.

[0094] Specifically, the third limiting member 24 is provided on the inner walls of both ends of the groove in the limiting seat 22 in the Y direction. When the slide table 17 moves along the slide rail 18 and gradually approaches the inner wall of the limiting seat 22, the third limiting member 24 abuts against the side wall of the slide table 17 in the Y direction to limit the slide table 17 from continuing to move, thereby preventing the slide table 17 from moving excessively and colliding with and being damaged by the rear outer panel 5.

[0095] The end of the third limiting member 24 that abuts against the slide table 17 is made of plastic material to avoid collision damage to the slide table 17. At the same time, the plastic deformation of the plastic material can provide a buffer space for the slide table 17.

[0096] Optionally, the limiting seat 22 can also be configured with other shapes.

[0097] Optionally, a third limiting element 24 may be separately provided on the base 1.

[0098] In some embodiments, the second positioning component 3 further includes a first clamping device 25 and a first positioning block 26, wherein the first clamping device 25 is mounted on the first positioning block 26;

[0099] The first clamping device 25 is configured to clamp the rear reinforcing beam 6 to apply a clamping force to the rear reinforcing beam 6 in a first direction so that the rear reinforcing beam 6 is fitted with the first positioning block 26 in the first direction.

[0100] Specifically, the first positioning block 26 is located at the top of the flipping block 9. The first positioning block 26 is a cuboid structure. Its end face near the rear outer panel 5 in the Y direction is the positioning surface of the rear reinforcing beam 6 in the Y direction. A magnet is provided at one end of the first positioning block 26 located on the positioning surface. The first clamping device 25 includes a connecting rod 27 and a clamping member 28. One end of the connecting rod 27 is detachably installed on the first positioning block 26, and the other end is provided with a threaded hole. One end of the clamping member 28 is provided through the threaded hole, and the two are threadedly connected. The axial direction of the clamping member 28 is parallel to the Y direction.

[0101] When installing the rear reinforcing beam 6, insert the first positioning hole on the rear reinforcing beam 6 into the reinforcing beam positioning post 10. At this time, the upper end of the L-shaped structure of the rear reinforcing beam 6 is located between the positioning surface of the first clamping device 25 and the first positioning block 26. Since the first positioning block 26 is equipped with a magnet, the rear reinforcing beam 6 is in contact with the positioning surface under the action of the magnetic force of the magnet. Rotate the clamping member 28 so that the clamping member 28 moves along the Y direction and gradually approaches the rear reinforcing beam 6 until the clamping member 28 contacts the rear reinforcing beam 6 and clamps the rear reinforcing beam 6.

[0102] The first positioning block 26 and the magnet on its positioning surface can make the rear reinforcing beam 6 be in the theoretical position in the Y direction, thereby improving the accuracy of matching other parts with the rear reinforcing beam 6 in the Y direction. At the same time, the magnetic force of the magnet will attract and fix the rear reinforcing beam 6 to the positioning surface. The first clamping device 25 can apply clamping force to the rear reinforcing beam 6, thereby improving the stability of the rear reinforcing beam 6.

[0103] Optionally, the first clamping device 25 may not be provided, or a first clamping device 25 with other structures may be provided.

[0104] In some embodiments, the body-in-white rear panel matching device is also used to match the rear panel longitudinal beam 7 with the rear panel reinforcing beam 6, and the rear panel longitudinal beam 7 is provided with a second positioning hole.

[0105] The body-in-white rear panel matching device also includes a third positioning component 4, which includes a rear longitudinal beam positioning post and a second clamping device.

[0106] The rear longitudinal beam positioning post 29 extends along the second direction, and the rear longitudinal beam positioning post 29 is inserted into the second positioning hole;

[0107] The second clamping device is configured to clamp and secure the rear longitudinal beam 7.

[0108] Specifically, the rear longitudinal beam 7 has a stepped structure, and the top of the rear longitudinal beam 7 is a vertical structure. This vertical structure needs to be welded to the upper end of the rear longitudinal beam 7 in the Y direction. Four third positioning components 4 are respectively located on the side of the four second positioning components 3 near the first positioning component 2 in the Y direction. The third positioning component 4 includes a longitudinal beam support 30, a rear longitudinal beam positioning post 29, a second clamping device, a second positioning block 31, a third positioning block 32, and a fourth positioning block 33. The longitudinal beam support 30 is a cuboid structure. The second positioning block 31 is detachably connected to the longitudinal beam support 30 through a third locking knob 34. The upper end of the second positioning block 31 has a stepped structure. The upper surface of the stepped structure is the positioning surface of the rear longitudinal beam 7 in the X direction. The second clamping device includes a clamp 35, a pull rod 36, and a fourth locking knob 37. The clamp 35 is located at the top of the second positioning block 31, and the bottom of the clamp 35 is connected to the pull rod 36. The clamp 35 can be moved in the X direction and rotated around the X direction through the pull rod 36. The clamp 35 has a barbed structure. The rear longitudinal beam positioning post 29 is also located at the top of the second positioning block 31, and a through groove is provided in the middle of the rear longitudinal beam positioning post 29. The hook end of the clamp 35 is located in the through groove, and the bottom surface of the hook end of the clamp 35 can contact the positioning surface on the second positioning block 31.

[0109] The third positioning block 32 and the fourth positioning block 33 are respectively located on both sides of the longitudinal beam support 30. The bottom of the third positioning block 32 is detachably connected to the longitudinal beam support 30 through the fourth locking knob 37. The bottom of the fourth positioning block 33 is fixed to the longitudinal beam support 30 through the fifth locking knob 38. The third positioning block 32 is used to assist in supporting the rear longitudinal beam 7. The top surface of the fourth positioning block 33 is the positioning surface of the rear outer panel 5 on both sides in the Y direction. When installing the rear outer panel 5, the rear outer panel 5 and the fourth positioning block 33 are fitted together in the X direction.

[0110] When matching the rear longitudinal beam 7 and the rear reinforcing beam 6, move the second positioning component 3 in the Y direction away from the first positioning component 2 until the rear reinforcing beam 6 and the rear outer plate 5 are completely misaligned in the X direction. Remove the rear outer plate 5, install the second positioning block 31 and the third positioning block 32 onto the longitudinal beam bracket 30, and fix them respectively by the third locking knob 34 and the fourth locking knob 37. Insert the second positioning hole on the rear longitudinal beam 7 into the rear longitudinal beam positioning post 29. Since the second positioning hole is a waist-shaped hole with a certain length, the outer wall of the rear longitudinal beam positioning post 29 needs to be in contact with the inner wall of one end of the second positioning hole, and the hook end of the clamp 35 may be located inside the second positioning hole. Push the pull rod 36 upward in the X direction so that the hook end of the clamp 35 is higher than the rear longitudinal beam positioning post 29. Rotate the pull rod 36 180 degrees. With the hook end of the clamp 35 facing outward from the second positioning hole, pull the lever 36 downward in the X direction so that the hook end of the clamp 35 is embedded in the through groove, and the bottom end of the hook end contacts the surface of the rear longitudinal beam 7 and clamps the rear longitudinal beam 7 in the X direction. Fix the clamp 35 by the sixth locking knob 39 to ensure the stable fixation of the rear longitudinal beam 7. The rear longitudinal beam 7 is also supported on the third positioning block 32. Move the second positioning component 3 towards the direction closer to the first positioning component 2 to the theoretical position. At this time, the rear reinforcing beam 6 should theoretically be in contact with the rear longitudinal beam 7 in the Y direction. The rear reinforcing beam 6 is set in contact with the positioning surface in the Y direction. Therefore, the rear reinforcing beam 6 is in the theoretical position. If there is a gap between the rear reinforcing beam 6 and the rear longitudinal beam 7, the gap is the surface deviation of the rear longitudinal beam 7 in the Y direction.

[0111] The staff sets a third tolerance for the matching of the rear reinforcing beam 6 and the rear longitudinal beam 7, and sets a measuring point every 50mm-200mm along the Z direction. At the measuring point, the third gap value between the rear reinforcing beam 6 and the rear longitudinal beam 7 is measured. The gap between the rear longitudinal beam 7 and the rear reinforcing beam 6 corresponding to the rear longitudinal beam positioning post 29 is specially recorded as the second positioning gap value. The size of the third gap value is compared with the third tolerance. If the third gap value is greater than the third tolerance, the stamping die is corrected to the range of the third tolerance. If the third gap value is less than the third tolerance, the Y-direction position of the rear longitudinal beam positioning post 29 on the fixture is adjusted, and the adjustment amount is the second positioning gap value at the corresponding rear longitudinal beam positioning post 29.

[0112] By setting the third positioning component 4, the rear reinforcing beam 6 and the rear longitudinal beam 7 can be directly matched on the matching device. The gap between the parts can be measured by using the parts as references, which greatly reduces the number of inspection blocks required for traditional inspection. At the same time, it can inspect the key surfaces on the assembly, reducing the manufacturing cost of the inspection structure.

[0113] This application also provides a method for matching the rear bulkhead of a white body, including:

[0114] Step S1: Provide a body-in-white rear panel matching device as described in any of the above items;

[0115] Step S2: Install the rear outer panel 5 onto the first positioning component 2, and install the rear reinforcing beam 6 onto the second positioning component 3; measure the first gap value between the rear outer panel 5 and the measuring block in the first direction, and measure the second gap value between the rear outer panel 5 and the rear reinforcing beam 6 in the second direction.

[0116] Step S3: Adjust the matching degree between the rear outer panel 5 and the rear reinforcing beam 6 according to the first gap value and the second gap value;

[0117] Step S4: Remove the rear outer panel 5 and install the rear longitudinal beam 7 onto the third positioning component 4; measure the third gap value between the rear longitudinal beam 7 and the rear reinforcing beam 6 in the first direction;

[0118] Step S5: Adjust the matching degree between the rear longitudinal beam 7 and the rear reinforcing beam 6 according to the third gap value.

[0119] The above method can be used to achieve the matching degree between the rear outer panel 5, the rear longitudinal beam 7, and the rear reinforcing beam 6 on the rear body matching device, thereby reducing the time occupied on the production line and improving production efficiency.

[0120] In some embodiments, after step S4 adjusts the matching degree between the rear longitudinal beam 7 and the rear reinforcing beam 6 according to the third gap value, it further includes:

[0121] Step S6: After adjusting the matching degree between the rear outer panel 5 and the rear reinforcing beam 6 and the matching degree between the rear longitudinal beam 7 and the rear reinforcing beam 6, measure again the first gap value between the rear outer panel 5 and the measuring block in the first direction, the second gap value between the rear outer panel 5 and the rear reinforcing beam 6 in the second direction, and the third gap value between the rear longitudinal beam 7 and the rear reinforcing beam 6 in the first direction.

[0122] Step S7: Check whether the first gap value, second gap value and third gap value measured again are qualified;

[0123] Step S8: If it is not qualified, adjust the matching degree between the rear outer panel 5 and the rear reinforcing beam 6 and the matching degree between the rear longitudinal beam 7 and the rear reinforcing beam 6 according to the first gap value, the second gap value and the third gap value measured again, until the first gap value, the second gap value and the third gap value are qualified.

[0124] Specifically, first, place a set of rear outer panels 5, rear reinforcing beams 6 and rear longitudinal beams 7 on the matching device and perform matching tests according to the steps. Adjust the fixture or modify the size of the stamping die based on the test results. Use the adjusted fixture and stamping die to make a new set of rear outer panels 5, rear reinforcing beams 6 and rear longitudinal beams 7, and weld the various parts of the new set into the rear assembly as required.

[0125] Position the rear assembly on the matching device, raise the flip block 9 and tighten the first locking knob 13, remove the clamping piece 28 on the first clamping device 25, loosen the second locking knob 15, take out the reinforcing beam positioning post 10 and replace it with a scribing pin. At this time, the scribing pin is in a state where it can rotate around its axis. According to the width model of the rear outer panel 5, move the slide table 17 along the slide rail 18 and fix it in the designated position so that the second positioning component 3 is close to the rear assembly. At this time, the scribing pin is inserted into the first positioning hole on the rear reinforcing beam 6. The positioning surface on the second positioning component 3 in the Y direction should theoretically be close to the rear reinforcing beam 6, and a gap is formed between the rear outer panel 5 and the measuring block 11 in the Y direction.

[0126] Set a fourth tolerance for matching between the rear reinforcing beam 6 and the positioning surface on the second positioning component 3. Repeat the previous matching steps to measure the gap between the rear reinforcing beam 6 and the positioning surface on the second positioning component 3, and the gap between the rear outer plate 5 and the measuring block 11 in the Y direction. Compare each gap value with the fourth tolerance and the first tolerance. If each gap value is qualified, the rear assembly can be mass-produced using the above-mentioned stamping die and fixture. If any gap value is unqualified, a new set of rear outer plate 5, rear reinforcing beam 6 and rear longitudinal beam 7 can be produced using the above-mentioned corrected stamping die. The parts of the new set can be inspected according to the matching steps. Adjust the fixture or correct the stamping die according to the inspection results until each gap value is qualified. Then, mass production can be carried out using the finally adjusted fixture and stamping die.

[0127] The various parts of the rear assembly can be directly matched on the matching device, which is intuitive and the measurement results can guide the adjustment and positioning of the fixture, making the adjustment target clearer and reducing the time spent on welding line stoppage for fixture adjustment.

[0128] In some embodiments, step S3, adjusting the matching degree between the rear outer panel 5 and the rear reinforcing beam 6 based on the first gap value and the second gap value, includes:

[0129] Step S31: Determine the theoretical gap value between the rear outer panel 5 and the measuring block 11 in the first direction, and obtain the absolute value of the difference between the theoretical gap value and the first gap value. Compare the absolute value with the first tolerance. If the absolute value is less than the first tolerance, the first gap value is qualified. If the absolute value is greater than the first tolerance, the size of the stamping die is corrected according to the first gap value and the second gap value.

[0130] Specifically, using the above method, it is possible to determine whether to adjust the fixture positioning or correct the stamping die based on the size of the first gap value. This provides a clear adjustment method for how to adjust the gap between the rear outer plate 5 and the measuring block 11, thereby reducing the number of matching tests and improving the efficiency of testing and adjustment correction.

[0131] In some embodiments, step S3, adjusting the matching degree between the rear outer panel 5 and the rear reinforcing beam 6 based on the first gap value and the second gap value, includes:

[0132] Step S32: Measure and record the first positioning gap value between the rear outer panel 5 and the rear reinforcing beam 6 in the second direction at the location of the reinforcing beam positioning column 10.

[0133] Step 33: Determine the size of the second gap value and the second tolerance. If the second gap value is less than the second tolerance, then the second gap value is qualified.

[0134] Step S34: If the second gap value is greater than the second tolerance, then determine the actual overlap height of the welding surfaces of the rear reinforcing beam 6 and the side wall 16 in the second direction and the minimum height required for the welding surfaces. If the actual overlap height is greater than the minimum height required for the welding surfaces, then adjust the fixture positioning, and the adjustment amount is the first positioning gap value; if the actual overlap height is less than the minimum height required for the welding surfaces, then correct the stamping die.

[0135] Specifically, using the above method, the size of the second gap value can be used to determine whether to adjust the fixture positioning or correct the stamping die. This provides a clear adjustment method for how to adjust the gap between the rear reinforcing beam 6 and the rear outer plate 5, thereby reducing the number of matching tests and improving the efficiency of testing and adjustment. At the same time, the second positioning gap value can provide a clear amount of fixture adjustment, which is intuitive and convenient and can improve the efficiency of fixture adjustment.

[0136] In some embodiments, step S5, adjusting the matching degree between the rear longitudinal beam 7 and the rear reinforcing beam 6 according to the third gap value, includes:

[0137] Step S51: Measure the second positioning gap value between the rear longitudinal beam 7 and the rear reinforcing beam 6 in the first direction at the positioning post 29 of the rear longitudinal beam.

[0138] Step S52: Determine the size of the third gap value and the third tolerance. If the third gap value is greater than the third tolerance, then correct the stamping die. If the third gap value is less than the third tolerance, then adjust the fixture positioning, and the adjustment amount is the second positioning gap value.

[0139] Specifically, using the above method, the size of the third gap value can be used to determine whether to adjust the fixture positioning or correct the stamping die. This provides a clear adjustment method for how to adjust the gap between the rear reinforcing beam 6 and the rear longitudinal beam 7, thereby reducing the number of matching tests and improving the efficiency of testing and adjustment. At the same time, the third positioning gap value can provide a clear amount of fixture adjustment, which is intuitive and convenient, and improves the efficiency of fixture adjustment.

[0140] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0141] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A body-in-white rear quarter matching device for matching a rear quarter outer panel (5) with a rear quarter reinforcement beam (6), characterized in that, The body-in-white rear wall matching device comprises: a base (1); a first positioning assembly (2) fixedly installed on the base (1) and configured to support the rear wall outer plate (5); a second positioning assembly (3) provided on the base (1) and configured to support the rear wall reinforcement beam (6) and make the rear wall reinforcement beam (6) and the rear wall outer plate (5) fit in a second direction; the second positioning assembly (3) comprises a measuring block (11) which is gap-provided with the rear wall outer plate (5) in a first direction to measure the gap between the measuring block (11) and the rear wall outer plate (5); the first direction intersects the second direction; the body-in-white rear wall matching device is further configured to match a rear wall longitudinal beam (7) with the rear wall reinforcement beam (6), the rear wall longitudinal beam (7) being provided with a second positioning hole; the body-in-white rear wall matching device further comprises a third positioning assembly (4) comprising a rear wall longitudinal beam positioning column (29) and a second clamping device; the rear wall longitudinal beam positioning column (29) extends along the second direction, and the rear wall longitudinal beam positioning column (29) is inserted and matched with the second positioning hole; the second clamping device is configured to clamp and fix the rear wall longitudinal beam (7).

2. The body-in-white rear quarter matching device according to claim 1, characterized by, the rear wall reinforcement beam (6) is provided with a first positioning hole; the second positioning assembly (3) further comprises a reinforcement beam positioning column (10) extending along the first direction; the reinforcement beam positioning column (10) is inserted and matched with the first positioning hole.

3. The body-in-white rear quarter matching device according to claim 1, characterized by, a slide table (17) is provided at the bottom of the second positioning assembly (3), the base (1) is provided with a slide rail (18) along the first direction, and the slide table (17) is movably installed on the slide rail (18).

4. The body-in-white rear quarter matching device according to claim 3, characterized by, a first limiting piece (20) is provided on the base (1) at the bottom of the slide table (17), and the slide table (17) is provided with a second limiting piece (21); after the slide table (17) moves to a preset position, the first limiting piece (20) and the second limiting piece (21) are detachably connected to limit the continuous movement of the slide table (17).

5. The body-in-white rear quarter matching device according to claim 4, characterized by, third limiting pieces (24) are respectively provided at both ends of the base (1) in the movement direction of the slide table (17); the third limiting pieces (24) can abut against the slide table (17) in the movement direction of the slide table (17) to limit the movement range of the slide table (17).

6. The BIW rear quarter matching device according to any one of claims 1 to 5, characterized in that, the second positioning assembly (3) further comprises a first clamping device (25) and a first positioning block (26), and the first clamping device (25) is installed on the first positioning block (26); the first clamping device (25) is configured to clamp the rear wall reinforcement beam (6) to apply a clamping force in the first direction to the rear wall reinforcement beam (6) to make the rear wall reinforcement beam (6) and the first positioning block (26) fit in the first direction.

7. A body-in-white rear quarter matching method, characterized by, the method comprises the following steps: The body-in-white rear quarter matching device according to any one of claims 1-6 is provided. The rear quarter outer panel (5) is installed on the first positioning assembly (2), and the rear quarter reinforcement beam (6) is installed on the second positioning assembly (3); the first gap value of the rear quarter outer panel (5) and the measuring block (11) in the first direction is measured, and the second gap value of the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) in the second direction is measured. The matching degree between the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) is adjusted according to the first gap value and the second gap value. The rear quarter outer panel (5) is removed, and the rear quarter longitudinal beam (7) is installed on the third positioning assembly (4); the third gap value of the rear quarter longitudinal beam (7) and the rear quarter reinforcement beam (6) in the first direction is measured. The matching degree between the rear quarter longitudinal beam (7) and the rear quarter reinforcement beam (6) is adjusted according to the third gap value.

8. The body-in-white rear quarter matching method of claim 7, wherein, After adjusting the matching degree between the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) and adjusting the matching degree between the rear quarter longitudinal beam (7) and the rear quarter reinforcement beam (6), the first gap value of the rear quarter outer panel (5) and the measuring block (11) in the first direction, the second gap value of the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) in the second direction, and the third gap value of the rear quarter longitudinal beam (7) and the rear quarter reinforcement beam (6) in the first direction are measured again. It is verified whether the first gap value, the second gap value, and the third gap value measured again are qualified. If not, the matching degree between the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) and the matching degree between the rear quarter longitudinal beam (7) and the rear quarter reinforcement beam (6) are adjusted according to the first gap value, the second gap value, and the third gap value measured again until the first gap value, the second gap value, and the third gap value are qualified.

9. The body-in-white rear quarter matching method of claim 8, wherein, The adjustment of the matching degree between the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) according to the first gap value and the second gap value comprises: The absolute value of the difference between the theoretical gap value of the rear quarter outer panel (5) and the measuring block (11) in the first direction and the first gap value is obtained, the absolute value is compared with the first tolerance, if the absolute value is less than the first tolerance, the first gap value is qualified, and if the absolute value is greater than the first tolerance, the size of the stamping die is corrected according to the first gap value and the second gap value; and / or The adjustment of the matching degree between the rear quarter outer panel (5) and the rear quarter reinforcement beam (6) according to the first gap value and the second gap value comprises: The first positioning gap value of the corresponding rear quarter outer panel (5) and the rear quarter reinforcement beam (6) in the second direction at the reinforcement beam positioning column (10) is measured and recorded; It is judged whether the second gap value is less than the second tolerance, if so, the second gap value is qualified; If the second gap value is greater than the second tolerance, the actual overlap height of the welding surface of the rear wall reinforcement beam (6) and the side wall (16) in the second direction is determined, and if the actual overlap height is greater than the minimum required height of the welding surface, the jig positioning is adjusted, and the adjustment amount is the first positioning gap value; if the actual overlap height is less than the minimum required height of the welding surface, the stamping die is corrected; and / or The adjustment of the matching degree between the rear wall longitudinal beam (7) and the rear wall reinforcement beam (6) according to the third gap value comprises: Measuring a second positioning gap value of the rear wall longitudinal beam (7) and the rear wall reinforcement beam (6) in the first direction at the corresponding rear wall longitudinal beam positioning column; Determining the size of the third gap value and a third tolerance, if the third gap value is greater than the third tolerance, the stamping die is corrected; if the third gap value is less than the third tolerance, the jig positioning is adjusted, and the adjustment amount is the second positioning gap value.

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