Multifunctional modularized automobile independent suspension cross beam positioning system and method

Abstract

The invention discloses a multifunctional modularized automobile independent suspension cross beam positioning system and method.The system comprises a cross beam clamp main body structure, a cross beam clamp main body structure and a cross beam clamp main body structure, the cross beam clamp main body structure comprises a bearing structure and a bottom plate structure, and a positioning mechanism and a clamping mechanism are arranged on the bottom plate structure; the positioning mechanism comprises a plurality of positioning subassemblies and is used for accurately positioning the suspension cross beam and related parts of the suspension cross beam and ensuring that the deviation of the welded parts is within the range of design requirements; the clamping mechanism comprises a plurality of clamping assemblies and clamping devices and is used for fixing the suspension cross beam and related parts thereof in the welding process; the supporting modules comprise the first supporting module, the second supporting module and the third supporting module which are symmetrically distributed on the two sides of the clamping mechanism and used for supporting and limiting a suspension cross beam front / rear connecting plate and a suspension lower triangular arm mounting beam, and collapse caused by welding deformation in the welding process is prevented; and the independent positioning assistive device is used for independently positioning the local small parts.

Description

Technical Field

[0001] The invention relates to the technical field of automobile welding and manufacturing, and in particular to a multifunctional modular automobile independent suspension crossbeam positioning system and method. Background Art

[0002] With the rapid development of the automobile industry, the performance and quality requirements of automobiles are constantly improving. Especially in the field of off-road vehicles, the suspension system of the vehicle has a vital impact on the driving stability, handling and ride comfort of the vehicle. Independent suspension systems are widely used in high-performance off-road vehicles because they can provide better wheel movement freedom and better road adaptability. As one of the core components of the independent suspension system, the manufacturing quality and precision of the suspension beam directly affect the performance of the vehicle.

[0003] At present, most automobile manufacturers usually use traditional arc welding process when producing independent suspension beams. Although this process is mature, there are some problems in actual operation. First, the design of traditional welding fixtures is relatively simple and it is difficult to adapt to the changes in different models and structures, resulting in poor versatility and flexibility of the fixtures. Secondly, large thermal deformation is prone to occur during the welding process, which affects the welding quality and dimensional accuracy of the parts. In order to reduce welding deformation, complex pretreatment and subsequent correction processes are usually required, which not only increases production costs, but also prolongs the production cycle. In addition, for the welding of some small parts, such as welding small brackets and bolts, the existing fixture design often cannot provide sufficient positioning support, resulting in the difficulty in ensuring the welding quality of these small parts.

[0004] The existing technology has obvious deficiencies in the manufacturing process of independent suspension cross beams. First, a single fixture design cannot meet the production needs of multiple models and structures, resulting in high management and maintenance costs of the fixture. Secondly, the thermal deformation problem generated during the welding process seriously affects the welding quality and the dimensional accuracy of the parts, and increases the complexity and cost of the subsequent correction process. Finally, for the welding of small parts, the existing fixture design lacks effective positioning support, resulting in unstable welding quality of these small parts, affecting the performance of the overall product. These problems limit the application of existing technologies in the efficient and high-quality production of independent suspension cross beams. Therefore, it is particularly important to develop a multifunctional modular positioning system and its quality control method that can solve the above problems. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide a multifunctional modular automobile independent suspension beam positioning system and method. The system ensures the precise positioning and fixation of the suspension beam and its related components by designing a precise positioning mechanism and a clamping mechanism, effectively controls the deviation of parts after welding within the range of design requirements, improves the welding quality and dimensional accuracy, and prevents deformation during welding through a dedicated support module, thereby ensuring the stability and reliability of the welded structure; and introduces an independent positioning aid specifically for welding small parts such as small brackets and bolts, thereby improving the welding quality and operating efficiency of these small parts, avoiding the problem of insufficient support for small parts welding in traditional fixture design, optimizing the process flow, and ensuring the efficiency and smoothness of the entire production process through reasonable placement, positioning, clamping, welding, cooling and unloading steps.

[0006] According to a first aspect of the present invention, there is provided a multifunctional modular automobile independent suspension crossbeam positioning system, comprising:

[0007] The main structure of the crossbeam fixture includes a bearing structure and a bottom plate structure, and a positioning mechanism and a clamping mechanism are provided on the bottom plate structure; the positioning mechanism includes a plurality of positioning parts, which are used to accurately position the suspension crossbeam and related components to ensure that the deviation of the parts after welding is within the range of design requirements; the clamping mechanism includes a plurality of clamping parts and clamps, which are used to fix the suspension crossbeam and related components during the welding process;

[0008] The support modules include a first support module, a second support module and a third support module, which are symmetrically distributed and used on both sides of the clamping mechanism to support and limit the front / rear connecting plates of the suspension cross beam and the mounting beam of the lower triangular arm of the suspension to prevent collapse due to welding deformation during welding; and

[0009] Independent positioning aids are used to independently position small local parts.

[0010] Furthermore, the bearing structure comprises: a clamp frame (22) as a main frame; a component storage box arranged on the clamp frame and a plurality of foot supports connected to the clamp frame by bolts.

[0011] Furthermore, reinforcing ribs are welded on the clamp frame to further reinforce the clamp frame.

[0012] Furthermore, the multiple positioning components include: a symmetrically arranged first positioning component and a second positioning component, which are respectively used to position the left and right mounting brackets of the front main reducer; a symmetrically arranged third positioning component and a fourth positioning component, which are designed with positioning surfaces and circular step positioning pins, and are used to position the suspension crossbeam; a symmetrically arranged fifth positioning component and a sixth positioning component, which are designed with positioning blocks and diamond-shaped positioning pins, and are mainly used to position the front / rear connecting plates of the suspension crossbeam; a symmetrically arranged seventh positioning component and an eighth positioning component, which are designed with positioning blocks and circular step positioning pins, and are mainly used to position the front / rear connecting plates of the suspension crossbeam; and a ninth positioning component, a tenth positioning component and an eleventh positioning component, which are mainly used to position the connecting beam and the bracket on the crossbeam.

[0013] Furthermore, it also includes a first positioning block, a second positioning block, a third positioning block and a fourth positioning block which assist the fifth positioning assembly and the sixth positioning assembly in more accurately supporting and positioning the front / rear connecting plate of the suspension cross beam.

[0014] Furthermore, the multiple clamping parts include: a symmetrically arranged first clamping part and a second clamping part, which are used to press the lower triangle arm mounting beam of the suspension; a symmetrically arranged third clamping part and a fourth clamping part, which are used to press the front / rear connecting plates of the suspension cross beam; and a fifth clamping part for pressing the special bracket.

[0015] Furthermore, the clamp comprises: a first clamp and a second clamp for clamping and positioning the left and right cover plates of the crossbeam.

[0016] Furthermore, it also includes: a control unit for controlling the clamping and releasing of the clamping mechanism.

[0017] Furthermore, the main structure of the beam clamp also includes: a reducer and a mechanical locking mechanism arranged on both sides of the base plate structure, the reducer is used to ensure that the clamp flipping process is smooth and labor-saving, and the mechanical locking mechanism is used to play an auxiliary protective role in the clamp flipping process.

[0018] According to a second aspect of the present invention, a multifunctional modular automobile independent suspension crossbeam positioning method is provided, which is implemented by applying the above-mentioned multifunctional modular automobile independent suspension crossbeam positioning system, comprising:

[0019] S100, placing the parts on the fixture according to the standard operation manual, fitting the positioning mechanism in the fixture, checking the positioning reliability and fine-tuning with process pads, and then manually operating the clamping mechanism to clamp the parts;

[0020] S200, perform welding operations on the clamped parts according to the process requirements, keep the clamped state after welding, and let the parts stand for several minutes to cool down to prevent deformation;

[0021] S300, loosen the clamping mechanism, keep the beam on the fixture, and use the independent positioning aid to position the small bracket and the welding bolt according to the product structure;

[0022] S400, welding the small bracket and the welding bolts, removing the independent positioning aid, cleaning the welding slag, removing the welded parts and storing them.

[0023] Beneficial effects of the present invention:

[0024] 1. This system ensures the precise positioning and fixing of the suspension crossbeam and its related components by designing precise positioning and clamping mechanisms, effectively controls the deviation of parts after welding within the range of design requirements, improves welding quality and dimensional accuracy, and prevents deformation during welding through a dedicated support module, ensuring the stability and reliability of the welded structure.

[0025] 2. This system introduces independent positioning aids, which are specially used for welding small parts such as small brackets and bolts, thereby improving the welding quality and operation efficiency of these small parts, avoiding the problem of insufficient support for welding of small parts in traditional fixture design, optimizing the process flow, and ensuring the efficiency and smoothness of the entire production process through reasonable placement, positioning, clamping, welding, cooling and unloading steps.

[0026] 3. This system achieves the versatility and flexibility of the fixture by designing the same positioning base plate and frame and combining differentiated positioning modules. It can adapt to changes in different vehicle models and structures and reduce the management and maintenance costs of the fixture.

[0027] 4. This system reduces the number and types of fixtures, simplifies production management, and reduces production costs through modular design and multifunctional positioning system. It also reduces the correction process after welding, shortens the production cycle, and further reduces production costs.

[0028] 5. This system ensures the overall performance of the independent suspension beam through high-precision welding quality and stable dimensional accuracy, and improves the driving stability, handling and ride comfort of the vehicle.

[0029] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1is a schematic diagram of four sets of crossbeam assemblies in an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of a load-bearing structure in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of a clamping mechanism in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0034] Figure 4 It is a schematic diagram of a positioning mechanism in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of a support module in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of a use scenario of a support module in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0037] Figure 7 It is a schematic diagram of a first crossbeam welding auxiliary tool in a multifunctional modular automobile independent suspension crossbeam positioning system in an embodiment of the present invention;

[0038] Figure 8 It is a schematic diagram of a second beam welding auxiliary tool in a multifunctional modular automobile independent suspension beam positioning system in an embodiment of the present invention;

[0039] Fig. 9 It is a schematic diagram of a third beam welding auxiliary tool in a multifunctional modular automobile independent suspension beam positioning system in an embodiment of the present invention;

[0040] Fig.10 This is a flow chart of a multifunctional modular automobile independent suspension beam positioning method in an embodiment of the present invention;

[0041] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0042] 21-foot support, 22-clamp frame, 23-reinforcement ribs, 25-reducer, 26-mechanical locking mechanism, 27-part storage box;

[0043] 41 - first clamping part, 42 - second clamping part, 43 - third clamping part, 44 - fourth clamping part, 45 - fifth clamping part, 46 - first clamp, 47 - second clamp, 48 - control unit;

[0044] 51-first positioning part installation, 52-second positioning part installation, 53-third positioning part installation, 54-fourth positioning part installation, 55-fifth positioning part installation, 56-sixth positioning part installation, 57-first positioning block, 58-second positioning block, 59-third positioning block, 60-fourth positioning block, 61-seventh positioning part installation, 62-eighth positioning part installation, 63-ninth positioning part installation, 64-tenth positioning part installation, 65-eleventh positioning part installation;

[0045] 71-first supporting module, 72-second supporting module, 73-third supporting module; 91-first crossbeam first auxiliary tool, 92-first crossbeam second auxiliary tool, 93-first crossbeam third auxiliary tool; 101-second crossbeam first auxiliary tool, 102-second crossbeam second auxiliary tool, 103-second crossbeam third auxiliary tool; 111-third crossbeam first auxiliary tool, 112-third crossbeam second auxiliary tool. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0049] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as in the embodiments of this application.

[0050] The present invention provides a multifunctional modular automobile independent suspension crossbeam positioning system and method. The system ensures the precise positioning and fixation of the suspension crossbeam and related components by designing a precise positioning mechanism and a clamping mechanism, effectively controls the deviation of parts after welding within the range of design requirements, improves the welding quality and dimensional accuracy, and prevents deformation during welding through a dedicated support module, thereby ensuring the stability and reliability of the welding structure; and introduces an independent positioning aid specifically for welding small parts such as small brackets and bolts, thereby improving the welding quality and operating efficiency of these small parts, avoiding the problem of insufficient support for small parts welding in traditional fixture design, optimizing the process flow, and ensuring the efficiency and smoothness of the entire production process through reasonable placement, positioning, clamping, welding, cooling and unloading steps.

[0051] like Figure 1 As shown in the figure, the frame assembly of a certain off-road vehicle is a ladder-shaped structure, including two left and right longitudinal beam assemblies and four independent cross beam assemblies, which constitute the main load-bearing structure of the frame assembly and the important interface of the chassis assembly. The four suspension cross beam assemblies are the front suspension cross beam welding assembly, the front suspension rear cross beam welding assembly, the rear suspension front cross beam welding assembly, and the rear suspension rear cross beam assembly, respectively referred to as the first cross beam welding assembly, the second cross beam welding assembly, the third cross beam welding assembly, and the fourth cross beam welding assembly. Among them, the first cross beam welding assembly and the second cross beam welding assembly are the main load-bearing structures of the front suspension of the whole vehicle, and the installation mechanism of the front triangle arm and the shock absorber spring, the installation interface of the front main reducer and the brake pipe, etc. are designed on them. The third cross beam welding assembly and the fourth cross beam welding assembly are the main load-bearing structures of the rear suspension of the whole vehicle, and the installation mechanism of the rear triangle arm and the shock absorber spring and the installation interface of the chassis pipe line are designed on them. The main structure of the four cross beams is the same, and there are differences in the local structure. The suspension crossbeam assembly plays an important load-bearing role in the vehicle, and the suspension crossbeam is made using traditional arc welding technology, which has large welding deformation. Now it is necessary to design a special welding positioning system in the welding workshop to realize the welding of the crossbeam assembly and ensure its stable welding quality.

[0052] Embodiment 1:

[0053] Based on the design structure of the suspension crossbeam, the four crossbeam assemblies are similar in size and structure, but there are differences in details. When designing, we consider the positioning base plate and frame of the same structure, use the same positioning form, and achieve it through differentiated positioning modules.

[0054] like Figure 2 As shown, the embodiment of the present invention takes the first crossbeam welding assembly as an example, and provides a multifunctional modular automobile independent suspension crossbeam positioning system, including: a crossbeam clamp main structure, including a load-bearing structure and a base plate structure, and a positioning mechanism and a clamping mechanism are provided on the base plate structure; the positioning mechanism includes a plurality of positioning parts for accurately positioning the suspension crossbeam and related components to ensure that the deviation of the parts after welding is within the range of design requirements; the clamping mechanism includes a plurality of clamping parts and clamps for fixing the suspension crossbeam and related components during the welding process. The bearing structure includes a clamp frame 22 as the main frame; a component storage box 27 arranged on the clamp frame 22 and four foot supports 21 connected to the clamp frame 22 by bolts; the foot supports 21 are made of 20mm thick steel plates processed into a cuboid, and holes are punched on them, and the clamp frame 22 is connected by bolts; the clamp frame 22 is a 80*80 square steel welded to form the main frame of the clamp to ensure the good bearing capacity of the clamp; the reinforcing ribs 23 are made of 10mm thick steel plates cut into triangles and welded on the clamp frame 22, with the help of the superior stability of the triangle , which strengthens and stabilizes the fixture frame 22; the component storage box 27 is a square storage box made of 1.0mm ordinary steel plate, welded to the side of the fixture frame 22, and a triangular reinforcement plate is welded at the bottom, which is mainly used to store small components such as process pads; the bottom plate structure is cut from 28mm thick steel plate. According to the structural characteristics of the product, the bottom plate is arranged with mounting holes and mounting grooves for various positioning components, and a large hollow hole is designed at the position where there is no positioning component on the bottom plate, so that after the fixture is turned over, the worker can complete the welding operation from the back of the fixture, which reduces the working intensity and improves the welding quality.

[0055] Furthermore, a reducer 25 and a mechanical locking mechanism 26 are provided on both sides of the bottom plate structure, wherein the reducer 25 plays an important role in the fixture flipping process, ensuring that the fixture flipping process is smooth and labor-saving. The mechanical locking mechanism 26 has a safety pin, which plays an auxiliary protective role in the fixture flipping process to prevent mechanical damage caused by the failure of the reducer.

[0056] like Figure 3As shown, the clamping components arranged on the positioning mechanism include: a symmetrically arranged first clamping component 41 and a second clamping component 42, which are used to clamp the lower triangular arm mounting beam of the suspension; a symmetrically arranged third clamping component 43 and a fourth clamping component 44, which are used to clamp the front / rear connecting plates of the suspension cross beam; a fifth clamping component 45 for clamping the special bracket; a first clamp 46 and a second clamp 47 for clamping and positioning the left and right covering plates of the cross beam; and a control unit 48 for controlling the clamping and releasing of the clamping mechanism.

[0057] like Figure 4 As shown, the positioning components arranged on the positioning mechanism include: a symmetrically distributed first positioning component 51 and a second positioning component 52, which are used to respectively position the left and right mounting brackets of the front main reducer, and the Y-axis precision adjustment and the fixture replacement of different models are realized by the groove slide designed on the bottom plate, so as to ensure the accurate positioning of the main reducer mounting bracket, and the deviation of the parts after welding is controlled within ±1.0mm of the design requirement; a symmetrically distributed third positioning component 53 and a fourth positioning component 54, which are designed with positioning surfaces and circular step positioning pins, are mainly used for positioning the suspension crossbeam, and belong to one of the main positioning of the set of fixtures, and can control the accuracy of the lower triangle arm mounting hole on the suspension crossbeam to be within ±1.0mm; a symmetrically distributed fifth positioning component 55 and a symmetrically distributed sixth positioning component 56 are a set of symmetrical positioning components, which are designed with positioning blocks and diamond positioning pins, and are mainly used for positioning the front / rear connecting plates of the suspension crossbeam, and belong to the auxiliary positioning of the set of fixtures. One, by adding or subtracting shims between the positioning block and the connecting block, the clamp accuracy can be adjusted and the flexible switching of positioning for different models can be achieved, and the dimensional accuracy required by the design can be controlled within ±1.5mm; the symmetrically distributed seventh positioning component 61 and the eighth positioning component 62 are designed with positioning blocks and circular step positioning pins, which are mainly used to position the front / rear connecting plates of the suspension crossbeam, and belong to one of the main positioning of the set of clamps. By adding or subtracting shims between the positioning block and the connecting block, the clamp accuracy can be adjusted and the flexible switching of positioning for different models can be achieved, and the dimensional accuracy required by the design can be controlled within ±1.5mm; and positioning component 63, positioning component 64, and positioning component 65 are mainly used for positioning the connecting beam and the bracket on the crossbeam. By adding or subtracting shims between the positioning block and the connecting block, the clamp accuracy can be adjusted and the flexible switching of positioning for different models can be achieved, and the dimensional accuracy required by the design can be controlled within ±1.5mm. This system ensures the precise positioning and fixing of the suspension crossbeam and its related components by designing precise positioning and clamping mechanisms, effectively controls the deviation of parts after welding within the range of design requirements, and improves welding quality and dimensional accuracy.

[0058] Furthermore, it also includes a first positioning block 57, a second positioning block 58, a third positioning block 59 and a fourth positioning block 60, which are mainly used to assist the fifth positioning component 55 and the sixth positioning component 56 to more accurately support and position the front / rear connecting plate of the suspension beam.

[0059] like Figure 5 Figure 6 As shown, in addition to the main positioning mechanism and clamping mechanism of the above fixture, in order to ensure the welding quality and accuracy of the crossbeam welding assembly, we have designed a special support module to achieve the welding anti-deformation control of the hollow structure of the assembly. Among them, the three support modules, namely the first support module 71, the second support module 72 and the third support module 73, are of three different specifications and thicknesses, symmetrically distributed and used on both sides of the fixture, to support and limit the front / rear connecting plates of the suspension crossbeam and the mounting beam of the lower triangular arm of the suspension, to prevent collapse due to welding deformation during the welding process, and mainly play a supporting role in pre-controlling deformation. By adding a special support module, this system can effectively prevent deformation during the welding process and ensure the stability and reliability of the welding structure.

[0060] In addition to the above main design structures, the suspension crossbeam assembly is also equipped with installation interfaces for chassis pipe lines, mainly small parts such as some small welding brackets and welding bolts. In order not to affect the usability and convenience of the main positioning of the fixture, we designed and produced a batch of independent positioning aids according to the specific position of the installation interface. After loosening the fixture, the small parts can be welded. This can not only ensure the local welding quality of small parts, but also allow independent welding to improve work efficiency. Figure 7 Figure 8 Fig. 9 As shown, the present embodiment provides a plurality of independent positioning aids for three types of beams, including a first beam first aid 91, a first beam second aid 92, a first beam third aid 93, a second beam first aid 101, a second beam second aid 102, a second beam third aid 103, a third beam first aid 111, and a third beam second aid 112. By providing independent positioning aids specifically for welding small parts such as small brackets and bolts, the welding quality and operation efficiency of these small parts are effectively improved, and the problem of insufficient support for welding of small parts in traditional fixture design is avoided.

[0061] In summary, this system reduces the number and types of fixtures, simplifies production management, reduces production costs, reduces the correction process after welding, shortens the production cycle, and further reduces production costs through modular design and multi-functional positioning system. The high-precision welding quality and stable dimensional accuracy ensure the overall performance of the independent suspension beam and improve the driving stability, handling and ride comfort of the vehicle.

[0062] Embodiment 2:

[0063] like Fig.10 As shown, based on Example 1, the embodiment of the present invention provides a multifunctional modular automobile independent suspension beam positioning method, comprising:

[0064] S100, placing the parts on the fixture according to the standard operation manual, fitting the positioning mechanism in the fixture, checking the positioning reliability and fine-tuning with process pads, and then manually operating the clamping mechanism to clamp the parts;

[0065] S200, perform welding operations on the clamped parts according to the process requirements, keep the clamped state after welding, and let the parts stand for several minutes to cool down to prevent deformation;

[0066] S300, loosen the clamping mechanism, keep the beam on the fixture, and use the independent positioning aid to position the small bracket and the welding bolt according to the product structure;

[0067] S400, welding the small bracket and the welding bolts, removing the independent positioning aid, cleaning the welding slag, removing the welded parts and storing them.

[0068] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0069] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multifunctional modular automobile independent suspension beam positioning system, characterized in that: include: The main structure of the crossbeam fixture includes a bearing structure and a bottom plate structure, and a positioning mechanism and a clamping mechanism are provided on the bottom plate structure; the positioning mechanism includes a plurality of positioning parts, which are used to accurately position the suspension crossbeam and related components to ensure that the deviation of the parts after welding is within the range of design requirements; the clamping mechanism includes a plurality of clamping parts and clamps, which are used to fix the suspension crossbeam and related components during the welding process; The support modules include a first support module (71), a second support module (72) and a third support module (73), which are symmetrically distributed and used on both sides of the clamping mechanism to support and limit the front / rear connecting plates of the suspension cross beam and the lower triangle arm mounting beam of the suspension to prevent collapse due to welding deformation during welding; and Independent positioning aids are used to independently position small local parts.

2. A multifunctional modular automobile independent suspension beam positioning system according to claim 1, characterized in that: The bearing structure comprises: a clamp frame (22) as a main frame; a component storage box (27) arranged on the clamp frame (22); and a plurality of foot supports (21) connected to the clamp frame (22) via bolts.

3. A multifunctional modular automobile independent suspension beam positioning system according to claim 2, characterized in that: A reinforcing rib (23) is also welded on the clamp frame (22) to further reinforce the clamp frame (22).

4. The multifunctional modular automobile independent suspension beam positioning system according to claim 1, characterized in that: The multiple positioning components include: a symmetrically arranged first positioning component (51) and a second positioning component (52), respectively used to position the left and right mounting brackets of the front main reducer; a symmetrically arranged third positioning component (53) and a fourth positioning component (54), designed with positioning surfaces and circular step positioning pins, used to position the suspension crossbeam; a symmetrically arranged fifth positioning component (55) and a sixth positioning component (56), designed with positioning blocks and diamond-shaped positioning pins, mainly used to position the front / rear connecting plates of the suspension crossbeam; a symmetrically arranged seventh positioning component (61) and an eighth positioning component (62), designed with positioning blocks and circular step positioning pins, mainly used to position the front / rear connecting plates of the suspension crossbeam; and a ninth positioning component (63), a tenth positioning component (64) and an eleventh positioning component (65), mainly used to position the connecting beam and the bracket on the crossbeam.

5. The multifunctional modular automobile independent suspension beam positioning system according to claim 4, characterized in that: It also includes a first positioning block (57), a second positioning block (58), a third positioning block (59) and a fourth positioning block (60) for assisting the fifth positioning assembly (55) and the sixth positioning assembly (56) in more accurately supporting and positioning the front / rear connecting plate of the suspension cross beam.

6. The multifunctional modular automobile independent suspension beam positioning system according to claim 1, characterized in that: The multiple clamping parts include: a symmetrically arranged first clamping part (41) and a second clamping part (42) for clamping the lower triangle arm mounting beam of the suspension; a symmetrically arranged third clamping part (43) and a fourth clamping part (44) for clamping the front / rear connecting plate of the suspension cross beam; and a fifth clamping part (45) for clamping the special bracket.

7. The multifunctional modular automobile independent suspension beam positioning system according to claim 1, characterized in that: The clamp comprises: a first clamp (46) and a second clamp (47) for clamping and positioning the left and right sealing plates of the cross beam.

8. A multifunctional modular automobile independent suspension beam positioning system according to any one of claims 1 to 7, characterized in that: Also includes: A control unit (48) is used to control the clamping and releasing of the clamping mechanism.

9. A multifunctional modular automobile independent suspension beam positioning system according to any one of claims 1 to 7, characterized in that: The crossbeam clamp main structure also includes: a reducer (25) and a mechanical locking mechanism (26) arranged on both sides of the bottom plate structure, wherein the reducer (25) is used to ensure that the clamp flipping process is carried out smoothly and labor-savingly, and the mechanical locking mechanism (26) is used to play an auxiliary protective role in the clamp flipping process.

10. A multifunctional modular automobile independent suspension crossbeam positioning method, implemented by using a multifunctional modular automobile independent suspension crossbeam positioning system according to any one of claims 1 to 9, characterized in that: include: S100, placing the parts on the fixture according to the standard operation manual, fitting the positioning mechanism in the fixture, checking the positioning reliability and fine-tuning with process pads, and then manually operating the clamping mechanism to clamp the parts; S200, perform welding operations on the clamped parts according to the process requirements, keep the clamped state after welding, and let the parts stand for several minutes to cool down to prevent deformation; S300, loosen the clamping mechanism, keep the beam on the fixture, and use the independent positioning aid to position the small bracket and the welding bolt according to the product structure; S400, welding the small bracket and the welding bolts, removing the independent positioning aid, cleaning the welding slag, removing the welded parts and storing them.

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