Fixture for welding automobile rear axle

Abstract

The utility model discloses a clamp for welding an automobile rear axle, which belongs to the technical field of automobile part processing and comprises a clamping mechanism, a pair of supporting mechanisms and a lifting mechanism. The clamping mechanism comprises a pair of arc-shaped clamping plates, and the arc-shaped clamping plates are close to or away from each other through a distance adjusting assembly. The supporting mechanism is vertically arranged on the clamping mechanism in a penetrating mode and comprises a U-shaped bottom support and an n-shaped connecting frame, and the U-shaped bottom support is used for supporting and fixing a rear axle cross beam of an automobile rear axle; the lifting mechanism is connected with the bottom of the clamping mechanism and used for adjusting the height of the clamping mechanism. By means of the design, the two ends of the rear axle beam can be kept in the same horizontal state during welding, and welding concentricity is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing technology, and in particular relates to a fixture for welding automotive rear axles. Background Technology

[0002] The rear axle of an automobile, also known as the axle shaft, is the shaft that supports the rear wheels of a car and allows them to rotate. It not only bears the weight of the vehicle but also transmits power to the wheels, playing a crucial role in the vehicle's driving stability and driving performance. With the rapid development of the automotive industry, the requirements for the welding process of the rear axle are becoming increasingly stringent. As an important component of the vehicle, the welding quality of the rear axle directly affects the safety and reliability of the entire vehicle.

[0003] However, during the welding process, especially for irregular structures to be welded, such as the rear axle crossbeam, it is difficult to keep the two ends at the same level during welding, resulting in inaccurate positioning and tilting problems. In order to solve the concentricity problem, the traditional method usually requires fixing the four corners of the structure separately before welding, which not only increases the labor intensity of the operators, but also makes it difficult to guarantee the concentricity of the product.

[0004] To address the shortcomings of existing technologies, this invention provides a fixture for welding automotive rear axles, aiming to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fixture for welding the rear axle of automobiles, which can ensure that both ends of the rear axle crossbeam remain at the same level during welding, thereby improving the concentricity of the welding.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A fixture for welding automotive rear axles includes:

[0008] A clamping mechanism, comprising a pair of arc-shaped clamping plates, wherein the pair of arc-shaped clamping plates are brought closer together or further apart by a spacing adjustment component;

[0009] A pair of support mechanisms, which are vertically inserted through the clamping mechanism, include a "U"-shaped base and an "n"-shaped connecting frame. The "U"-shaped base is used to support and fix the rear axle crossbeam of the vehicle's rear axle.

[0010] And a lifting mechanism, which is connected to the bottom of the clamping mechanism and is used to adjust the height of the clamping mechanism.

[0011] Preferably, the spacing adjustment assembly includes a mounting base, on which a pair of side plates are vertically mounted. A bidirectional lead screw and a guide rod are mounted between the pair of side plates. Each threaded section of the bidirectional lead screw is threadedly connected to a pair of nuts. A guide block is connected to the outer periphery of the nuts. The guide block is movably connected to the guide rod, and an expansion base plate is connected to the top of the guide block. The expansion base plate is connected to the arc-shaped clamping plate. A motor is also mounted on one of the side plates, and the output end of the motor is connected to one end of the bidirectional lead screw via a coupling.

[0012] Preferably, the mounting base is also provided with a plurality of rectangular holes for the "n"-shaped connecting bracket to pass through.

[0013] Preferably, the lifting mechanism includes cylinders and a base. There are four cylinders in total, which are symmetrically installed at opposite corners of the base, and the output end of the cylinder is connected to the bottom of the mounting base. The base is also used to connect the "n"-shaped connecting frame.

[0014] Preferably, the arc-shaped clamp is adapted to the side shape of the support seat of the rear axle of the vehicle.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0016] 1. The clamping mechanism designed in this utility model firstly uses arc-shaped clamping plates to enable the clamp to adapt to automobile rear axles of different sizes, thereby improving the versatility and adaptability of the clamp; secondly, the spacing adjustment component enables the arc-shaped clamping plates to move closer or further apart, allowing for precise adjustment of the clamping force and position, ensuring that both ends of the rear axle crossbeam remain at the same level during welding, thus improving the concentricity of the welding.

[0017] 2. This utility model introduces a support mechanism. The "U"-shaped base is specifically used to support and fix the rear axle crossbeam of the car's rear axle. The bottom of the "n"-shaped connecting frame is connected to the base. This design can ensure that the crossbeam remains horizontal during the welding process, reduce the problems of tilting and inaccurate positioning, and ensure the stability and rigidity of the rear axle crossbeam during the welding process. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the fixture structure of this utility model.

[0020] Figure 3 This is a top view of one embodiment of the present invention.

[0021] Figure 4 This is a partial structural schematic diagram of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the rear axle of an automobile according to this utility model.

[0023] in:

[0024] 1. Clamping mechanism; 11. Spacing adjustment assembly; 111. Bidirectional lead screw; 112. Guide rod; 113. Nut; 114. Motor; 115. Guide block; 12. Expanded base plate; 13. Arc-shaped clamping plate; 14. Mounting base; 141. Rectangular hole; 15. Side plate;

[0025] 2. Supporting mechanism; 21. "U"-shaped base; 22. "n"-shaped connecting frame;

[0026] 3. Lifting mechanism; 31. Cylinder; 32. Base;

[0027] 4. Rear axle of the vehicle; 41. Rear axle crossbeam; 42. Support seat. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0029] In the description of this utility model, it should be understood that the terms "middle," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] refer to Figures 1-5 This embodiment provides a fixture for welding the rear axle of an automobile, including: a clamping mechanism 1, a pair of support mechanisms 2 and a lifting mechanism 3;

[0032] Specifically, the clamping mechanism 1 includes a pair of arc-shaped clamping plates 13, which are brought closer or further apart by a spacing adjustment component 11.

[0033] Furthermore, the spacing adjustment assembly 11 includes a mounting base 14, on which a pair of side plates 15 are vertically mounted. A bidirectional lead screw 111 and a guide rod 112 are mounted between the pair of side plates 15. A pair of nuts 113 are threadedly connected to both threaded sections of the bidirectional lead screw 111. A guide block 115 is connected to the outer periphery of the nuts 113. The guide block 115 is movably connected to the guide rod 112, and an expansion base plate 12 is connected to the top of the guide block 115. The expansion base plate 12 is connected to the arc-shaped clamping plate 13. A motor 114 is also mounted on one of the side plates 15. The output end of the motor 114 is connected to one end of the bidirectional lead screw 111 via a coupling.

[0034] Furthermore, in order to provide a flexible adjustment method so that the clamping mechanism 1 can adjust its height according to actual needs through the lifting mechanism 3, in this embodiment, the mounting base 14 is also provided with a number of rectangular holes 141 for the "n"-shaped connecting frame 22 to pass through.

[0035] Specifically, the support mechanism 2 is vertically inserted into the clamping mechanism 1 through the rectangular hole 141. It includes a "U"-shaped base 21 and an "n"-shaped connecting frame 22. The "U"-shaped base 21 is used to support and fix the rear axle crossbeam 41 of the automobile rear axle 4.

[0036] Specifically, the lifting mechanism 3 is connected to the bottom of the clamping mechanism 1 and is used to adjust the height of the clamping mechanism 1.

[0037] Furthermore, the lifting mechanism 3 includes cylinders 31 and a base 32. There are four cylinders 31, which are symmetrically installed at opposite corners of the base 32, and the output end of the cylinders 31 is connected to the bottom of the mounting base 14. The base 32 is also used to connect the "n"-shaped connecting frame 22.

[0038] The design of the cylinder 31 in the lifting mechanism 3 allows the height of the clamping mechanism 1 to be quickly adjusted to adapt to welding operations at different heights, improving the flexibility and operating efficiency of the clamp; and the four cylinders 31 are symmetrically installed at the diagonal of the base 32, providing a stable lifting force to ensure the balance and stability of the clamping mechanism 1 during the lifting process.

[0039] Furthermore, in order to ensure a tight fit between the clamp and the rear axle and improve the stability of clamping and the accuracy of welding, in this embodiment, the arc-shaped clamp 13 is adapted to the side shape of the support seat 42 of the rear axle 4 of the vehicle.

[0040] Working principle: Before welding the rear axle crossbeam 41 and support seat 42 of the rear axle 4 of the automobile, the rear axle crossbeam 41 of the automobile rear axle 4 is first placed on the support mechanism 2 to ensure its stable placement; then the support seats 42 of the rear axle 4 are placed on the expansion plate respectively, and with the limiting effect of the arc-shaped clamp 13, the support seats 42 of the rear axle 4 can be temporarily fixed. After the rear axle crossbeam 41 and the support seats 42 on both sides of the rear axle 4 are in place, the motor 114 is started, and the correct motor 114 is selected. When steering, the motor 114 drives the bidirectional lead screw 111 to rotate, thereby causing a pair of nuts 113 to move closer together until the support seat 42 of the rear axle 4 of the car is in close contact with the rear axle crossbeam 41 of the rear axle 4 of the car, thus completing the positioning in the x direction; at the same time, the cylinder 31 is also activated, so that the support seat 42 of the rear axle 4 of the car and the rear axle crossbeam 41 of the rear axle 4 of the car are at the same height, thus completing the positioning in the y direction. With accurate positioning in both the x and y directions, the welding positioning of the rear axle 4 of the car is achieved.

[0041] In summary, the fixture designed in this utility model, through its unique design, not only improves the concentricity and quality of welding, but also reduces the labor intensity of operators and improves welding efficiency and operational flexibility; these design improvements are of great significance for improving the quality and efficiency of the welding process for the rear axle of automobiles.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fixture for welding the rear axle of an automobile, characterized in that, include: The clamping mechanism (1) includes a pair of arc-shaped clamps (13), which are brought closer or further apart by a spacing adjustment component (11). A pair of support mechanisms (2) are vertically inserted through the clamping mechanism (1), which includes a "U"-shaped base (21) and an "n"-shaped connecting frame (22). The "U"-shaped base (21) is used to support the rear axle crossbeam (41) of the vehicle rear axle (4). And a lifting mechanism (3), which is connected to the bottom of the clamping mechanism (1) and is used to adjust the height of the clamping mechanism (1).

2. The fixture for welding the rear axle of an automobile according to claim 1, characterized in that, The spacing adjustment assembly (11) includes a mounting base (14), on which a pair of side plates (15) are vertically mounted. A double-acting lead screw (111) and a guide rod (112) are mounted between the pair of side plates (15). A pair of nuts (113) are threadedly connected to both threaded sections of the double-acting lead screw (111). A guide block (115) is connected to the outer periphery of the nut (113). The guide block (115) is movably connected to the guide rod (112). An expansion base plate (12) is connected to the top of the guide block (115). The expansion base plate (12) is connected to the arc-shaped clamp (13). A motor (114) is also mounted on one of the side plates (15). The output end of the motor (114) is connected to one end of the double-acting lead screw (111) through a coupling.

3. The fixture for welding the rear axle of an automobile according to claim 2, characterized in that, The mounting base (14) is also provided with several rectangular holes (141) for the "n"-shaped connecting bracket (22) to pass through.

4. The fixture for welding the rear axle of an automobile according to claim 3, characterized in that, The lifting mechanism (3) includes a cylinder (31) and a base (32). There are four cylinders (31) in total, which are symmetrically installed at opposite corners of the base (32). The output end of the cylinder (31) is connected to the bottom of the mounting base (14). The base (32) is also used to connect the "n"-shaped connecting frame (22).

5. The fixture for welding the rear axle of an automobile according to claim 2, characterized in that, The arc-shaped clamp (13) is adapted to the side shape of the support seat (42) of the rear axle (4) of the vehicle.

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