A flexible servo welding fixture for side wall assembly

Abstract

The present application belongs to the technical field of automobile tooling, and particularly relates to a flexible servo repair welding clamp for a side wall assembly, which comprises a Base plate and a fixing mechanism installed on the Base plate and used for fixing the side wall assembly. The fixing mechanism comprises a fixing and positioning mechanism, a first fixing and clamping mechanism, a first fixing and supporting mechanism, a first servo positioning mechanism, a second fixing and clamping mechanism, a servo clamp mechanism and a second servo positioning mechanism. A Y-direction supporting structure and a Y-direction clamping structure are further installed on the fixing mechanism. A moving end of an X-direction servo module is connected with a fourth support. The servo clamp mechanism further comprises a seventh Z-direction servo module, a moving end of which is connected with a seventh support. The second servo positioning mechanism further comprises an eighth Z-direction servo module, a moving end of which is connected with an eighth support. The purpose is to solve the problems of high cost, complex mechanism and being not conducive to fast rhythm production caused by the structural defects of the existing repair welding clamp.

Description

Technical Field

[0001] This invention belongs to the field of automotive tooling technology, specifically relating to a flexible servo welding fixture for side panel assemblies. Background Technology

[0002] With the rapid development of the automotive industry, major car brands are placing increasingly higher demands on the intelligence of welding production lines for new models, thereby promoting flexible co-production of multiple models. Currently, the main solutions adopted in the co-production of side panel assemblies for multiple models are: fixture library and shared rigid fixtures.

[0003] The fixture library consists of developing separate welding fixtures for each vehicle model. The fixtures for different vehicle models can be switched using a drum, turntable, or cross slide solution. This solution requires additional tooling and equipment, as well as an increased workstation footprint, which in turn increases the cost of project development.

[0004] The shared rigid fixture is a set of fixtures shared by multiple models. The shared fixture is achieved through measures such as sharing some positioning mechanisms, switching using a windmill mechanism, lifting to avoid obstacles, and fixing units to avoid obstacles based on model differences. However, it has great restrictions on the side assembly of the shared models, the number of shared models is small, the overall fixture mechanism is complex, and the positioning units of different models are set on the base, which increases the number of units, affects welding accessibility, and is not conducive to fast-paced production. Summary of the Invention

[0005] The purpose of this invention is to provide a flexible servo welding fixture for side panel assemblies to solve the problems of high cost, complex mechanism, and unfavorable to fast-paced production caused by the structural defects of existing welding fixtures.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A flexible servo welding fixture for a side panel assembly includes a base plate and a fixing mechanism mounted on the base plate for fixing the side panel assembly. The fixing mechanism includes a fixing and positioning mechanism, a first fixing and clamping mechanism, a first fixing and supporting mechanism, a first servo positioning mechanism, a second fixing and clamping mechanism, a servo clamping mechanism, and a second servo positioning mechanism.

[0008] The fixed positioning mechanism is located in front of the A-pillar of the side panel assembly, and a first limiting block is provided on the side of the fixed positioning mechanism near the side panel assembly.

[0009] The first fixing clamping mechanism is located between the A-pillar and B-pillar of the side panel assembly. The first fixing clamping mechanism includes a second bracket and a second limiting block. The second limiting block is installed on the side of the second bracket near the sill beam of the side panel assembly.

[0010] The first fixed support mechanism is located between the B-pillar and C-pillar of the side panel assembly. The first fixed support mechanism includes a third bracket and a third limiting block. The third limiting block is installed on the side of the third bracket near the sill beam of the side panel assembly.

[0011] The first servo positioning mechanism is located on the C-pillar of the side panel assembly, away from the B-pillar. The first servo positioning mechanism includes a fourth bracket and a fourth limiting block. The fourth limiting block is installed on the fourth bracket on the side of the side panel assembly near the C-pillar.

[0012] The servo clamping mechanism is located between the B-pillar and C-pillar of the side panel assembly. The servo clamping mechanism includes a seventh bracket and a seventh limiting block. The seventh limiting block is installed on the side of the seventh bracket near the upper side beam of the side panel assembly.

[0013] The second servo positioning mechanism is located between the A-pillar and the B-pillar of the side panel assembly. The second servo positioning mechanism includes an eighth bracket and an eighth limiting block. The eighth limiting block is installed on the side of the eighth bracket near the upper beam of the side panel assembly.

[0014] The fixing mechanism is also equipped with a Y-direction support structure and a Y-direction clamping structure.

[0015] The first servo positioning mechanism includes an X-axis servo module.

[0016] The X-axis servo module is mounted on the base board, and the moving end of the X-axis servo module is connected to the fourth bracket.

[0017] The servo clamping mechanism also includes a seventh Z-axis servo module.

[0018] The seventh Z-axis servo module is mounted on the base board, and the moving end of the seventh Z-axis servo module is connected to the seventh bracket.

[0019] The second servo positioning mechanism also includes an eighth Z-axis servo module, which is mounted on the Base board and whose moving end is connected to the eighth bracket.

[0020] Further defined, the Y-direction support structure includes a second Y-direction support block, a third Y-direction support block, a sixth Y-direction support block, a seventh Y-direction support block, and an eighth Y-direction support block;

[0021] The second Y-axis support block is mounted on the second bracket, and the third Y-axis support block is mounted on the third bracket. The second fixing and clamping mechanism is located behind the D-pillar area of ​​the side panel assembly. The second fixing and clamping mechanism includes a sixth bracket, on which the sixth Y-axis support block is mounted, the seventh Y-axis support block is mounted on the seventh bracket, and the eighth Y-axis support block is mounted on the eighth bracket. This structural design provides Y-axis support for the side panel assembly through the second, third, sixth, seventh, and eighth Y-axis support blocks. It is simple in structure, provides stable support, and is highly practical. In practice, corresponding Y-axis support blocks can also be installed in other locations depending on the actual situation, as long as Y-axis support for the side panel assembly can be achieved.

[0022] Further specifying, the Y-axis clamping structure includes a second clamping block, a sixth clamping block, and a seventh clamping block. The second clamping block is hinged to the second bracket, the sixth clamping block is hinged to the sixth bracket, and the seventh clamping block is hinged to the seventh bracket. Cylinders are mounted on the second, sixth, and seventh brackets. The movable end of the cylinder on the second bracket is connected to the second clamping block, the movable end of the cylinder on the sixth bracket is connected to the sixth clamping block, and the movable end of the cylinder on the seventh bracket is connected to the seventh clamping block. This structural design achieves Y-axis clamping of the side panel assembly by pulling the clamping blocks with the cylinders. Combined with corresponding Y-axis support blocks, it achieves Y-axis fixation of the side panel assembly. The structure is simple and highly practical. In practice, clamping blocks can also be placed in other locations depending on the actual situation, as long as Y-axis clamping of the side panel assembly is achieved.

[0023] Furthermore, the fixing mechanism also includes a second fixing support mechanism, which is located between the side wall D-pillar area and the base plate. This structural design, by supporting the side wall D-pillar area through the second support mechanism located at the corresponding position, can prevent the side wall D-pillar area from sagging and deforming during welding, making it highly practical.

[0024] Furthermore, the Base plate has several reserved mounting holes at the corresponding positions in the D-pillar area of ​​the side panel. These reserved mounting holes are used to install the second fixed support mechanism and the second fixed clamping mechanism. This structural design allows for changes in the installation positions of the second fixed support mechanism and the second fixed clamping mechanism depending on the model of the side panel assembly, providing better support for the side panel assembly and demonstrating strong practicality.

[0025] Furthermore, the first servo positioning mechanism also includes a fourth Z-axis servo module, which is installed between the X-axis servo module and the fourth bracket. This structural design, through the fourth Z-axis servo module to realize the Z-axis movement of the fourth limiting block, can provide better X-axis pushing and fixing functions for side assemblies with different C-pillar outer contours, making it highly practical.

[0026] Further specifying, the servo clamping mechanism includes a seventh Y-axis servo module, which is installed between the seventh Y-axis servo module and the seventh bracket. This structural design, through the seventh Y-axis servo module to realize the Y-axis movement of the seventh limiting block, can provide better support for different side assemblies of the upper frame, and has strong practicality.

[0027] Furthermore, the movement direction of the eighth Z-axis servo module is shifted from top to bottom and then to the left. This structural design, by shifting the movement direction of the eighth Z-axis servo module from top to bottom and then to the left, causes the actual movement direction of the eighth limiting block to shift. This makes the eighth limiting block correspond to the tilted state of the front part of the upper beam in the side assembly. Consequently, under the push of the eighth Z-axis servo module, the eighth limiting block can both push and fix the side assembly in the Z-axis direction, as well as push and fix the side assembly in the X-axis direction, resulting in a more stable fixation and stronger practicality.

[0028] Furthermore, the second servo positioning mechanism includes an eighth Y-axis servo module, which is installed between the eighth Y-axis servo module and the eighth bracket. This structural design, through the eighth Y-axis servo module to realize the Y-axis movement of the eighth limiting block, can provide better support for different side assemblies of the upper frame, and has strong practicality.

[0029] The invention employing the above technical solution has the following advantages:

[0030] 1. The X-axis positioning of the side panel assembly is achieved through the first and fourth limiting blocks; the Z-axis positioning of the side panel assembly is achieved through the second, third, seventh, and eighth limiting blocks; the Y-axis support structure and Y-axis clamping structure complete the Y-axis positioning and fixing of the side panel assembly; in conjunction with the X-axis servo module, the seventh Z-axis servo module, and the eighth Z-axis servo module, the positioning and fixing of the side panel assembly are completed; on the one hand, the absence of drum, turntable, and cross slide mechanisms reduces the investment in tooling equipment and the warehouse floor space, thus reducing project investment costs; on the other hand, the use of servo module mechanisms effectively simplifies the number and complexity of fixture unit mechanisms while meeting the requirement of sharing fixtures among multiple vehicle models, resulting in good welding accessibility and meeting the requirements of high-speed production.

[0031] 2. The side panel assembly is supported in the Y direction by the second Y-direction support block, the third Y-direction support block, the sixth Y-direction support block, the seventh Y-direction support block and the eighth Y-direction support block. The structure is simple, the support is stable and the practicality is strong.

[0032] 3. By pulling each clamping block with a cylinder, the side panel assembly is clamped in the Y direction. With the corresponding Y-direction support block, the side panel assembly is fixed in the Y direction. The structure is simple and highly practical.

[0033] 4. The second support mechanism located at the corresponding position of the side wall D-pillar area supports the side wall D-pillar area, which can prevent the side wall D-pillar area from sagging and deforming during welding, and has strong practicality.

[0034] 5. The fourth limit block can be moved in the Z direction by the fourth Z-axis servo module, which can provide better X-axis pushing and fixing functions for side assemblies with different C-pillar outer contours, and has strong practicality.

[0035] 6. The seventh Y-axis servo module enables the Y-axis movement of the seventh limit block, which can provide better support for different side assemblies of the upper frame and has strong practicality.

[0036] 7. By shifting the movement direction of the eighth Z-axis servo module from top to bottom and to the left, the actual movement direction of the eighth limit block is shifted, so that the eighth limit block corresponds to the tilt state of the front part of the upper beam in the side assembly. Thus, under the push of the eighth Z-axis servo module, the eighth limit block can push and fix the side assembly in the Z-axis, as well as push and fix the side assembly in the X-axis, making the fixation more stable and more practical.

[0037] 8. The eighth limit block can move in the Y direction by using the eighth Y-axis servo module, which can provide better support for different side assemblies of the upper frame and is highly practical. Attached Figure Description

[0038] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0039] Figure 1 This is a schematic diagram of an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention;

[0040] Figure 2 This is a schematic diagram of the structure after the side panel assembly is installed in an embodiment of the flexible servo welding fixture for side panel assembly of the present invention;

[0041] Figure 3 This is a schematic diagram of the fixed positioning mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0042] Figure 4 for Figure 1Enlarged structural diagram at point A;

[0043] Figure 5 This is a schematic diagram of the first fixing and clamping mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0044] Figure 6 This is a schematic diagram of the first fixed support mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0045] Figure 7 This is a schematic diagram of the first servo positioning mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0046] Figure 8 for Figure 1 Enlarged structural diagram at point B;

[0047] Figure 9 This is a schematic diagram of the servo clamp mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0048] Figure 10 This is a schematic diagram of the second servo positioning mechanism in an embodiment of a flexible servo welding fixture for a side panel assembly according to the present invention.

[0049] The symbols for the main components are explained below:

[0050] Fixed positioning mechanism 1, first limit block 11

[0051] First fixed clamping mechanism 2, second bracket 20, second limiting block 21, second clamping block 22, second Y-axis support block 23.

[0052] First fixed support mechanism 3, third bracket 30, third limiting block 31, third Y-direction support block 33

[0053] First servo positioning mechanism 4, fourth bracket 40, fourth limit block 41, X-axis servo module 44, fourth Z-axis servo module 45

[0054] Second fixed support mechanism 5, reserved mechanism mounting hole 50

[0055] Second fixed clamping mechanism 6, sixth bracket 60, sixth clamping block 62, sixth Y-axis support block 63

[0056] Servo clamping mechanism 7, seventh bracket 70, seventh limit block 71, seventh clamping block 72

[0057] 73. Seventh Y-axis support block; 74. Seventh Y-axis servo module; 75. Seventh Z-axis servo module

[0058] Second servo positioning mechanism 8, eighth bracket 80, eighth limit block 81, eighth Y-axis support block 83

[0059] Eighth Y-axis servo module 84, Eighth Z-axis servo module 85

[0060] Base plate 9, cylinder 90, side wall D-pillar area 91, side wall rear water channel assembly 92. Detailed Implementation

[0061] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0062] like Figures 1-10 As shown, a flexible servo welding fixture for side panel assembly according to the present invention includes a base plate 9 and a fixing mechanism mounted on the base plate 9 for fixing the side panel assembly.

[0063] The fixing mechanism includes a fixing and positioning mechanism 1, a first fixing and clamping mechanism 2, a first fixing and supporting mechanism 3, a first servo positioning mechanism 4, a second fixing and supporting mechanism 5, a second fixing and clamping mechanism 6, a servo clamping mechanism 7, and a second servo positioning mechanism 8.

[0064] like Figures 1-3 As shown, the fixed positioning mechanism 1 is located in front of the A-pillar of the side panel assembly, and a first limiting block 11 is provided on the side of the fixed positioning mechanism 1 near the side panel assembly.

[0065] like Figure 1 , 2 As shown in Figures 4 and 5, the first fixing clamping mechanism 2 is located between the A-pillar and B-pillar of the side panel assembly. The first fixing clamping mechanism 2 includes a second bracket 20 and a second limiting block 21. The second limiting block 21 is installed on the side of the second bracket 20 near the sill beam of the side panel assembly.

[0066] like Figure 1 , 2 As shown in Figure 6, the first fixed support mechanism 3 is located between the B-pillar and C-pillar of the side assembly. The first fixed support mechanism 3 includes a third bracket 30 and a third limiting block 31. The third limiting block 31 is installed on the side of the third bracket 30 near the sill beam of the side assembly.

[0067] like Figure 1 , 2As shown in Figure 7, the first servo positioning mechanism 4 is located on the side of the side assembly's C-pillar away from the side assembly's B-pillar. The first servo positioning mechanism 4 includes a fourth bracket 40 and a fourth limiting block 41. The fourth limiting block 41 is installed on the side of the fourth bracket 40 near the C-pillar of the side assembly.

[0068] like Figure 1 , 2 As shown in Figure 9, the servo clamping mechanism 7 is located between the B-pillar and C-pillar of the side assembly. The servo clamping mechanism 7 includes a seventh bracket 70 and a seventh limiting block 71. The seventh limiting block 71 is installed on the side of the seventh bracket 70 near the upper beam of the side assembly.

[0069] like Figure 1 , 2 As shown in Figure 10, the second servo positioning mechanism 8 is located between the A-pillar and the B-pillar of the side assembly. The second servo positioning mechanism 8 includes an eighth bracket 80 and an eighth limiting block 81. The eighth limiting block 81 is installed on the side of the eighth bracket 80 near the upper beam of the side assembly.

[0070] The first limiting block 11, the second limiting block 21, the third limiting block 31, the fourth limiting block 41, the seventh limiting block 71, and the eighth limiting block 81 are all strip structures with semi-circular side walls. The semi-circular side walls of the strip structures allow the limiting blocks to make line contact with the side assembly, which can adapt to the cutting edge limiting positions of various vehicle models and effectively ensure that the limiting cutting edge and the support clamping position of the parts do not deform.

[0071] The X-direction positioning of the side panel assembly is achieved by the first limiting block 11 and the fourth limiting block 41;

[0072] The Z-axis positioning of the side panel assembly is achieved by the second limiting block 21, the third limiting block 31, the seventh limiting block 71 and the eighth limiting block 81;

[0073] like Figure 1 , 2 As shown in Figures 4, 5, 8-10, a second Y-axis support block 23 is installed on the second bracket 20.

[0074] A third Y-axis support block 33 is installed on the third bracket 30.

[0075] The second fixing clamping mechanism 6 is located on the rear side of the side wall D-pillar area 91 of the side wall assembly.

[0076] The second fixing clamping mechanism 6 includes a sixth bracket 60.

[0077] A sixth Y-axis support block 63 is installed on the sixth bracket 60.

[0078] The seventh Y-axis support block 73 is installed on the seventh bracket 70.

[0079] The eighth Y-axis support block 83 is installed on the eighth bracket 80.

[0080] The second Y-axis support block 23, the third Y-axis support block 33, the sixth Y-axis support block 63, the seventh Y-axis support block 73, the eighth Y-axis support block 83, the second clamping block 22, the sixth clamping block 62, and the seventh clamping block 72 are all spherical structures.

[0081] The spherical clamping block allows for point contact between the clamping block and the side assembly, which can adapt to the surface changes of the support and clamping positions of various vehicle models, effectively ensuring that the limiting cut edges of parts and the support and clamping positions do not deform.

[0082] The Y-direction support of the side wall assembly is achieved by the second Y-direction support block 23, the third Y-direction support block 33, the sixth Y-direction support block 63, the seventh Y-direction support block 73 and the eighth Y-direction support block 83;

[0083] like Figure 1 , 2 As shown in Figures 8-10, a second clamping block 22 is hinged to the second bracket 20.

[0084] A sixth clamping block 62 is hinged to the sixth bracket 60.

[0085] A seventh clamping block 72 is hinged to the seventh bracket 70.

[0086] Cylinders 90 are all installed on the second bracket 20, the sixth bracket 60, and the seventh bracket 70.

[0087] The movable end of the cylinder 90 on the second bracket 20 is connected to the second clamping block 22.

[0088] The movable end of the cylinder 90 on the sixth bracket 60 is connected to the sixth clamping block 62.

[0089] The movable end of the cylinder 90 on the seventh bracket 70 is connected to the seventh clamping block 72;

[0090] By retracting the cylinder 90, the second clamping block 22, the sixth clamping block 62 and the seventh clamping block 72 are driven to close, and together with the second Y-direction support block 23, the sixth Y-direction support block 63 and the seventh Y-direction support block 73, the side panel assembly is clamped, thereby achieving Y-direction positioning and fixation of the side panel assembly.

[0091] like Figure 1 , 2 As shown in Figure 8, the second fixing clamping mechanism 6 located on the rear side of the side wall D-pillar area 91 can support and clamp the side wall rear water channel assembly 92 of the side wall assembly.

[0092] like Figure 1 and 2As shown, the fixing mechanism also includes a second fixing support mechanism 5, which is located between the side wall D-pillar area 91 and the Base plate 9.

[0093] like Figure 1 and 2 As shown, the Base plate 9 also has several reserved mounting holes 50 at the corresponding positions in the side D-pillar area 91.

[0094] The reserved mounting hole 50 is used to install the second fixed support mechanism 5 and the second fixed clamping mechanism 6.

[0095] like Figure 1 , 2 As shown in Figure 7, the first servo positioning mechanism 4 includes an X-axis servo module 44.

[0096] The X-axis servo module 44 is mounted on the base board 9, and the moving end of the X-axis servo module 44 is connected to the fourth bracket 40.

[0097] The first servo positioning mechanism 4 also includes a fourth Z-axis servo module 45.

[0098] The fourth Z-axis servo module 45 is installed between the X-axis servo module 44 and the fourth bracket 40.

[0099] like Figure 1 , 2 As shown in Figure 9, the servo clamping mechanism 7 also includes a seventh Z-axis servo module 75.

[0100] The seventh Z-axis servo module 75 is mounted on the base board 9, and the moving end of the seventh Z-axis servo module 75 is connected to the seventh bracket 70.

[0101] The servo clamping mechanism 7 includes a seventh Y-axis servo module 74.

[0102] The seventh Y-axis servo module 74 is installed between the seventh Y-axis servo module 74 and the seventh bracket 70.

[0103] like Figure 1 , 2 As shown in Figure 10, the second servo positioning mechanism 8 also includes an eighth Z-axis servo module 85.

[0104] The eighth Z-axis servo module 85 is mounted on the base board 9, and the moving end of the eighth Z-axis servo module 85 is connected to the eighth bracket 80.

[0105] The eighth Z-axis servo module 85 moves from top to bottom and then shifts to the left.

[0106] The second servo positioning mechanism 8 includes an eighth Y-axis servo module 84.

[0107] The eighth Y-axis servo module 84 is installed between the eighth Y-axis servo module 84 and the eighth bracket 80.

[0108] In this embodiment, during installation, according to the structure of the side panel assembly, the second fixed support mechanism 5 and the second fixed clamping mechanism 6 are installed on the corresponding reserved mechanism mounting holes 50. Then, the Z-direction position of the fourth limit block 41 is adjusted by the fourth Z-direction servo module 45, the Y-direction position of the seventh Y-direction support block 73 is adjusted by the seventh Y-direction servo module 74, and the Y-direction position of the eighth Y-direction support block 83 is adjusted by the eighth Y-direction servo module 84.

[0109] Then, using the first limiting block 11, the second limiting block 21, the second Y-direction support block 23, the third limiting block 31, and the third Y-direction support block 33 as references, the assembly posture of the side panel assembly on the fixture is determined, and the side panel assembly is installed on the welding fixture.

[0110] Then, the X-axis servo module 44 controls the fourth limit block 41 to move in the Z-axis, thereby achieving precise X-axis positioning of the side assembly.

[0111] The seventh Z-axis servo module 75 controls the seventh limit block 71 to move in the Z-axis, and the eighth Z-axis servo module 85 controls the eighth limit block 81 to move in the Z-axis, so as to achieve precise Z-axis positioning of the side assembly.

[0112] Finally, the second clamping block 22, the sixth clamping block 62 and the seventh clamping block 72 are moved by the cylinder 90, so that each clamping block cooperates with the corresponding Y-direction support block to clamp the side assembly.

[0113] The foregoing has provided a detailed description of a flexible servo welding fixture for a side panel assembly provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A flexible servo welding fixture for a side panel assembly, comprising a base plate (9) and a fixing mechanism mounted on the base plate (9) for fixing the side panel assembly. Its features are: The fixing mechanism includes a fixing positioning mechanism (1), a first fixing clamping mechanism (2), a first fixing support mechanism (3), a first servo positioning mechanism (4), a second fixing clamping mechanism (6), a servo clamping mechanism (7), and a second servo positioning mechanism (8). The fixing positioning mechanism (1) is located in front of the A-pillar of the side panel assembly. The fixing positioning mechanism (1) is provided with a first limiting block (11) on the side of the side panel assembly. The first fixing clamping mechanism (2) is located between the A-pillar and B-pillar of the side panel assembly. The first fixing clamping mechanism (2) includes a second bracket (20) and a second limiting block (21). The second limiting block (21) is installed on the side of the second bracket (20) near the sill beam of the side panel assembly. The first fixing support mechanism (3) is located between the B-pillar and C-pillar of the side panel assembly. The first fixing support mechanism (3) includes a third bracket (30) and a third limiting block (31). The third limiting block (31) is installed... On the side of the third bracket (30) near the sill beam of the side assembly, the first servo positioning mechanism (4) is located on the side of the C pillar of the side assembly away from the B pillar of the side assembly. The first servo positioning mechanism (4) includes a fourth bracket (40) and a fourth limiting block (41). The fourth limiting block (41) is installed on the side of the fourth bracket (40) near the C pillar of the side assembly. The servo clamping mechanism (7) is located between the B pillar and the C pillar of the side assembly. The servo clamping mechanism (7) includes a seventh bracket (70) and a seventh limiting block (71). The seventh limiting block (71) is installed on the side of the seventh bracket (70) near the upper beam of the side assembly. The second servo positioning mechanism (8) is located between the A pillar and the B pillar of the side assembly. The second servo positioning mechanism (8) includes an eighth bracket (80) and an eighth limiting block (81). The eighth limiting block (81) is installed on the side of the eighth bracket (80) near the upper beam of the side assembly. The fixing mechanism is also equipped with a Y-direction support structure and a Y-direction clamping structure. The first servo positioning mechanism (4) includes an X-axis servo module (44), which is mounted on a Base plate (9). The moving end of the X-axis servo module (44) is connected to the fourth bracket (40). The servo clamping mechanism (7) also includes a seventh Z-axis servo module (75), which is mounted on a Base plate (9). The moving end of the seventh Z-axis servo module (75) is connected to the seventh bracket (70). The second servo positioning mechanism (8) also includes an eighth Z-axis servo module (85), which is mounted on a Base plate (9). The moving end of the eighth Z-axis servo module (85) is connected to the eighth bracket (80). The eighth Z-axis servo module (85) moves from top to bottom and then shifts to the left.

2. The flexible servo welding fixture for side panel assembly according to claim 1, characterized in that: The Y-direction support structure includes a second Y-direction support block (23), a third Y-direction support block (33), a sixth Y-direction support block (63), a seventh Y-direction support block (73), and an eighth Y-direction support block (83). The second Y-axis support block (23) is mounted on the second bracket (20). The third Y-axis support block (33) is mounted on the third bracket (30). The second fixing clamping mechanism (6) is located on the rear side of the side wall D-pillar area (91) of the side wall assembly. The second fixing clamping mechanism (6) includes a sixth bracket (60). The sixth Y-axis support block (63) is mounted on the sixth bracket (60). The seventh Y-axis support block (73) is mounted on the seventh bracket (70). The eighth Y-axis support block (83) is mounted on the eighth bracket (80).

3. A flexible servo welding fixture for a side panel assembly according to claim 2, characterized in that: The Y-axis clamping structure includes a second clamping block (22), a sixth clamping block (62), and a seventh clamping block (72). The second clamping block (22) is hinged to the second bracket (20). The sixth clamping block (62) is hinged to the sixth bracket (60). The seventh clamping block (72) is hinged to the seventh bracket (70). Cylinders (90) are installed on the second bracket (20), the sixth bracket (60) and the seventh bracket (70). The movable end of the cylinder (90) on the second bracket (20) is connected to the second clamping block (22). The movable end of the cylinder (90) on the sixth bracket (60) is connected to the sixth clamping block (62). The movable end of the cylinder (90) on the seventh bracket (70) is connected to the seventh clamping block (72).

4. The flexible servo welding fixture for side panel assembly according to claim 1, characterized in that: The fixing mechanism also includes a second fixing support mechanism (5), which is located between the side wall D-pillar area (91) and the Base plate (9).

5. A flexible servo welding fixture for a side panel assembly according to claim 4, characterized in that: The Base plate (9) is also provided with several reserved mechanism mounting holes (50) at the corresponding positions of the side D-pillar area (91). The reserved mounting hole (50) is used to install the second fixed support mechanism (5) and the second fixed clamping mechanism (6).

6. A flexible servo welding fixture for a side panel assembly according to claim 1, characterized in that: The first servo positioning mechanism (4) also includes a fourth Z-axis servo module (45). The fourth Z-axis servo module (45) is installed between the X-axis servo module (44) and the fourth bracket (40).

7. A flexible servo welding fixture for a side panel assembly according to claim 1, characterized in that: The servo clamping mechanism (7) includes a seventh Y-axis servo module (74). The seventh Y-axis servo module (74) is installed between the seventh Y-axis servo module (74) and the seventh bracket (70).

8. A flexible servo welding fixture for a side panel assembly according to claim 1, characterized in that: The second servo positioning mechanism (8) includes an eighth Y-axis servo module (84). The eighth Y-axis servo module (84) is installed between the eighth Y-axis servo module (84) and the eighth bracket (80).

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