A flexible welding tooling assembly platform for rear axle housing accessory bracket

Abstract

The utility model provides a kind of flexible welding tool assembly platform of rear axle housing accessory support, comprising: tool base, rear axle main reduction flange positioning unit, pneumatic supercharger cylinder, main slide rail, clamping mechanism, rear axle wheel end flange positioning unit, rear axle wheel end flange positioning unit is slidably arranged in pairs on main slide rail, two rear axle wheel end flange positioning units are located at the both ends of tool base, rear axle main reduction flange positioning unit is arranged between two rear axle wheel end flange positioning units, clamping mechanism is installed on rear axle main reduction flange positioning unit and clamps rear axle main reduction flange, one end of pneumatic supercharger cylinder is fixed on tool base and one end is connected with rear axle wheel end flange positioning unit, pneumatic chuck is installed on rear axle wheel end flange positioning unit.The utility model improves the flexibility of tool assembly platform, positioning unit and positioning block can be flexibly adjusted according to target vehicle size and position, realize a set of tool compatible form and different vehicle rear axle housing product specifications.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing technology, specifically a flexible welding tooling assembly table for a rear axle housing accessory bracket. Background Technology

[0002] Currently, each rear axle housing for a single vehicle model requires a custom design, necessitating the development of specialized welding fixtures. Examples include the automotive rear axle housing flange press-fit welding device disclosed in Chinese Patent CN108213923A, and the press-fitting equipment and method for a tube-type rear axle housing assembly disclosed in Chinese Patent CN111730311A. However, these press-fitting devices are dedicated to axle housings for specific vehicle models, exhibiting poor compatibility.

[0003] The existing rear axle housing structures mainly include three-section type, upper and lower shell type, insert type, and coaxial assembly type. For new rear axle products, mass production tooling is often incompatible and special tooling needs to be developed separately. Tooling development and design cycle and tooling cost often trouble the early stage of new project development and sample delivery. The types of rear axle models are increasing day by day, and the storage and management of a large number of vehicle-specific tooling is a huge workload.

[0004] The development cycle of welding fixtures with a single structural form is long, the flexibility for modification and compatibility with other vehicle models is poor, and the cost is high. Utility Model Content

[0005] This utility model provides a flexible welding tooling assembly platform for rear axle housing accessory brackets, which improves the flexibility of the tooling assembly platform. The design covers all current rear axle housing types and can be quickly adjusted and assembled to match the positioning and welding of the target vehicle's rear axle housing products. The positioning unit and positioning block can be flexibly adjusted according to the size and position of the target vehicle, realizing the ability of one tooling to be compatible with rear axle housing products of different types and specifications.

[0006] In this utility model, the rear axle housing is defined as the metal housing of the automobile drive rear axle, the positioning unit is defined as a small assembly unit composed of various positioning elements, and the positioning block is defined as a tooling block for fixing products to be welded.

[0007] To achieve the above objectives, this utility model provides a flexible welding fixture assembly platform for rear axle housing accessory brackets, used for welding rear axle housings. The platform includes: a fixture base, a rear axle main reduction flange positioning unit, a pneumatic booster cylinder, a main slide rail, a clamping mechanism, and a rear axle wheel end flange positioning unit. The main slide rail and the rear axle main reduction flange positioning unit are mounted on the fixture base.

[0008] The rear axle wheel end flange positioning units are slidably mounted in pairs on the main slide rail. This means the rear axle wheel end flange positioning units can slide longitudinally, and the distance between the two units can be adjusted to achieve compatible positioning for products of different sizes and axle housing types. A slider is located below each rear axle wheel end flange positioning unit, which cooperates with the main slide rail to slide. A locking mechanism is also included, which is fixedly connected to the slider. Once the rear axle wheel end flange positioning unit is positioned correctly, the locking mechanism secures the slider to the main slide rail, thereby locking the rear axle wheel end flange positioning unit firmly onto the main slide rail.

[0009] The two rear axle wheel end flange positioning units are located at both ends of the tooling base, and the rear axle main reducer flange positioning unit is located between the two rear axle wheel end flange positioning units. The rear axle wheel end flange positioning unit cooperates with the rear axle wheel end flange, and the rear axle main reducer flange positioning unit cooperates with the rear axle main reducer housing to achieve overall positioning of the rear axle housing.

[0010] The clamping mechanism is installed on the rear axle main reduction flange positioning unit to clamp the rear axle main reduction flange. Different sizes of pneumatic jaws are customized and different clamping heads can be used to cover rear axle main reduction flanges of different sizes, which improves the flexibility of the tooling assembly platform.

[0011] One end of the pneumatic booster cylinder is fixed to the tooling base, and the other end is connected to the rear axle wheel end flange positioning unit. A pneumatic chuck is installed on the rear axle wheel end flange positioning unit, which is used to clamp the rear axle wheel end flanges at both ends of the rear axle housing. In this invention, the pneumatic chuck is in contact with the rear axle wheel end flange parts. With customized stroke and pressure, it can theoretically achieve a support / clamping force of over 4.5KN. The pneumatic chuck has replaceable and detachable jaws with a stroke of 15mm. Different jaw clamping heads can cover rear axle flange heads of different diameters, enabling clamping of rear axle housings of different sizes. Multiple sets of clamping heads cover all rear axle flange head products on platforms with diameters of 55-100mm. The tooling assembly has high adaptability and greatly improves its flexibility.

[0012] Preferably, this utility model further includes an accessory bracket positioning unit disposed on the tooling base. The accessory bracket positioning unit includes a positioning block and a support base connecting block. The support base connecting block is connected to the positioning block in a detachable manner, and the installation angle is adjustable. The support base connecting block includes several joints, which can be connected to different joints in an adjustable direction to achieve adjustable positioning points. Both the positioning block and the support base connecting block are provided in multiples. The accessory bracket positioning unit is used to clamp the tubular part of the rear axle housing. It is designed as a combination of a simple positioning block and a three-way adjustable support base connecting block. The accessory bracket positioning unit is used to position the tubular structure part of the rear axle, which greatly improves the versatility of the positioning unit. At the same time, the connection part that contacts the part uses standard parts from the inspection module to ensure repeatability and positioning accuracy.

[0013] Preferably, the clamping mechanism includes a clamping cylinder and pneumatic jaws mounted on the clamping cylinder. The pneumatic jaws are detachably mounted on the free end of the clamping cylinder. Different sizes of customized pneumatic jaws, combined with different clamping heads, can cover different sizes of rear axle main reduction flanges.

[0014] Preferably, the rear axle wheel end flange positioning unit further includes a housing disposed between the pneumatic chuck and the pneumatic booster cylinder. An indexing plate is installed inside the housing, with the pneumatic chuck and the pneumatic booster cylinder connected to its two ends respectively. Using an indexing plate as the positioning plate ensures positioning and installation accuracy, guarantees the positioning accuracy of the chucks at both ends, and allows adjustment of the flange head's rotation direction and positioning angle to accommodate rear axle main reduction flanges of different sizes, thus improving the flexibility of the tooling assembly platform.

[0015] In this utility model, a 10T pneumatic booster cylinder is connected to the rear of the housing, which can realize the press-fit assembly of the interference fit flange head and the bridge pipe.

[0016] Preferably, the perpendicularity of the concentric axes of the two pneumatic chucks is less than 0.1 mm, and the rotational positioning angle accuracy of the rear axle wheel end flange is less than 0.1 degrees. This ensures welding accuracy and improves the yield rate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention solves the problems of limited compatibility and poor flexibility of traditional rear axle housing welding positioning fixtures. It allows for rapid adjustment and assembly to match the positioning and welding of rear axle housing products for the target vehicle model. The positioning unit and positioning block can be flexibly adjusted according to the size and position of the target vehicle model, enabling a single set of fixtures to be compatible with rear axle housing products of different forms and specifications. It covers the positioning and welding of all current rear axle housing forms, such as three-section, upper and lower shell, insert, and coaxial assembly axle housings.

[0019] This reduces the number of welding tooling development investments, saving on tooling development and manufacturing costs. The use of pneumatic and mechanical manual adjustment significantly reduces equipment failure rates and operator difficulty, improving the economic efficiency of tooling manufacturing and use. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a flexible welding tooling assembly platform for a rear axle housing accessory bracket as described in this utility model.

[0021] Figure 2 This is a schematic diagram of the flexible welding tooling assembly platform for the rear axle housing accessory bracket described in this utility model in its working state.

[0022] Figure 3This is an enlarged view of the structure of the rear axle wheel end flange positioning unit described in this utility model.

[0023] Figure 4 This is an enlarged view of the structure of the rear axle main reduction flange positioning unit described in this utility model.

[0024] Figure 5 This is a schematic diagram of the accessory bracket positioning unit of this utility model in its working state.

[0025] In the picture:

[0026] 1-Tooling base, 2-Rear axle main reduction flange positioning unit, 3-Pneumatic booster cylinder, 4-Main slide rail, 5-Clamping mechanism, 501-Clamping cylinder, 502-Pneumatic chuck, 6-Rear axle wheel end flange positioning unit, 601-Box body, 602-Indexing plate, 7-Pneumatic chuck, 8-Accessory bracket positioning unit, 9-Rear axle housing, 901-Rear axle main reduction flange, 902-Rear axle wheel end flange, 10-Secondary slide rail. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0028] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "front", "back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Example 1:

[0030] like Figures 1-3As shown, a flexible welding fixture assembly platform for a rear axle housing accessory bracket includes: a fixture base 1, a rear axle main reduction flange positioning unit 2, a pneumatic booster cylinder 3, a main slide rail 4, a clamping mechanism 5, and a rear axle wheel end flange positioning unit 6. The main slide rail 4 and the rear axle main reduction flange positioning unit 2 are mounted on the fixture base 1. The rear axle wheel end flange positioning units 6 are slidably mounted in pairs on the main slide rail 4. The two rear axle wheel end flange positioning units 6 are located at both ends of the fixture base 1, and the rear axle main reduction flange positioning unit 2 is positioned between the two rear axle wheel end flange positioning units 6. The clamping mechanism 5 is mounted on the rear axle main reduction flange positioning unit 2 to clamp the rear axle main reduction flange 901. One end of the pneumatic booster cylinder 3 is fixed to the fixture base 1 and the other end is connected to the rear axle wheel end flange positioning unit 6. A pneumatic chuck 7 is mounted on the rear axle wheel end flange positioning unit 6, and the pneumatic chuck 7 is used to position and clamp the rear axle wheel end flange 902.

[0031] The working principle of this embodiment is as follows: select the jaws of the pneumatic chuck 7, the jaws of the rear axle main reduction flange positioning unit 2, and the jaws of the clamping mechanism 5 that match the rear axle housing 9. The jaws of the main reduction flange positioning unit 2 are used for centering, and the jaws of the clamping mechanism 5 are used for clamping. Adjust the position of the rear axle wheel end flange positioning unit 6 on the main slide rail 4 to adapt to the size of the rear axle housing 9. Then fix the rear axle wheel end flange positioning unit 6. The rear axle main reduction flange positioning unit 2 positions the rear axle main reduction flange 901 of the rear axle housing 9 workpiece. The clamping mechanism 5 clamps the rear axle main reduction flange 901. The two rear axle wheel end flange positioning units 6 position and clamp the rear axle wheel end flange 902 of the rear axle housing 9 workpiece.

[0032] Example 2:

[0033] like Figures 1-3 As shown, a flexible welding fixture assembly platform for rear axle housing accessory brackets is used for welding rear axle housing 9. It includes: a fixture base 1, a rear axle main reduction flange positioning unit 2, a pneumatic booster cylinder 3, a main slide rail 4, a clamping mechanism 5, and a rear axle wheel end flange positioning unit 6. The main slide rail 4 and the rear axle main reduction flange positioning unit 2 are mounted on the fixture base 1.

[0034] The rear axle wheel end flange positioning units 6 are slidably mounted in pairs on the main slide rail 4, meaning that the rear axle wheel end flange positioning units 6 can slide longitudinally, and the distance between the two rear axle wheel end flange positioning units 6 can be adjusted to achieve adaptive combination positioning for products of different sizes and axle housing forms. A locking mechanism is also included, which is used to fix and lock the rear axle wheel end flange positioning units 6 onto the main slide rail 4 after the position of the rear axle wheel end flange positioning units 6 is adjusted.

[0035] like Figure 2As shown, the two rear axle wheel end flange positioning units 6 are located at both ends of the tooling base 1. The two rear axle wheel end flange positioning units 6 are symmetrical about the main reducer housing of the rear axle housing 9. The rear axle main reducer flange positioning unit 2 is located between the two rear axle wheel end flange positioning units 6. The rear axle wheel end flange positioning unit 6 cooperates with the rear axle wheel end flange 902, and the rear axle main reducer flange positioning unit 2 cooperates with the rear axle main reducer housing to achieve overall positioning of the rear axle housing 9.

[0036] like Figure 4 As shown, the clamping mechanism 5 is installed on the rear axle main reduction flange positioning unit 2 to clamp the rear axle main reduction flange 901. Different sizes of pneumatic jaws 502 are customized and different clamping heads can be used to cover the rear axle main reduction flange 901 of different sizes, which improves the flexibility of the tooling assembly platform.

[0037] like Figure 3 As shown, in this embodiment, one end of the pneumatic booster cylinder 3 is fixed to the tooling base 1, and the other end is connected to the rear axle wheel end flange positioning unit 6. A pneumatic chuck 7 is installed on the rear axle wheel end flange positioning unit 6. The pneumatic chuck 7 is used to clamp the rear axle wheel end flanges 902 at both ends of the rear axle housing 9. In this embodiment, the pneumatic chuck 7 is in contact with the rear axle wheel end flange 902. With customized stroke and pressure, it can achieve a theoretical support / clamping force of over 4.5KN. The pneumatic chuck 7 has replaceable and detachable jaws with a stroke of 15mm. Different jaw clamping heads can cover rear axle flange heads of different diameters, achieving clamping of rear axle housings 9 of different sizes. Multiple sets of clamping heads cover all rear axle flange head products on platforms with diameters of 55-100mm. The tooling assembly has high adaptability and greatly improves its flexibility.

[0038] like Figure 5 As shown, this embodiment also includes an accessory bracket positioning unit 8 disposed on the tooling base 1. The accessory bracket positioning unit 8 includes a positioning block 801 and a support base connecting block 802, which is connected to the positioning block 801. The support base connecting block 802 includes several joints, which can be connected to different joints in an adjustable direction to achieve adjustable positioning points. Both the positioning block 801 and the support base connecting block 802 are provided in multiples. The accessory bracket positioning unit 8 is used to clamp the tubular part of the rear axle housing 9. It is designed as a combination of a simple positioning block 801 and a three-way adjustable support base connecting block 802. The accessory bracket positioning unit 8 is used to position the tubular structure part of the rear axle.

[0039] like Figure 4As shown, in this embodiment, the clamping mechanism 5 includes a clamping cylinder 501 and a pneumatic jaw 502 mounted on the clamping cylinder 501. The pneumatic jaw 502 is detachably mounted on the free end of the clamping cylinder 501. Different sizes of customized pneumatic jaws 502 can be replaced, and different clamping heads can be used to cover different sizes of rear axle main reduction flanges 901.

[0040] This embodiment also includes a secondary slide rail 10, which is connected to the middle of the tooling base 1. The rear axle main reduction flange positioning unit 2 can be laterally slidably mounted on the secondary slide rail 10, realizing the lateral position adjustment of the rear axle main reduction flange positioning unit 2 and further improving the flexibility of the tooling assembly platform.

[0041] like Figure 3 As shown, in this embodiment, the rear axle wheel end flange positioning unit 6 further includes a housing 601 disposed between the pneumatic chuck 7 and the pneumatic booster cylinder 3, and an indexing plate 602 is installed inside the housing 601.

[0042] In this implementation, a 10T pneumatic booster cylinder 3 is connected to the rear of the housing 601, which can realize the press-fit assembly of the rear axle wheel end flange 902 and the axle tube with interference fit.

[0043] In this embodiment, the perpendicularity of the concentric axes of the two pneumatic chucks 7 is less than 0.1 mm, and the rotational positioning angle accuracy of the rear axle wheel end flange 902 is less than 0.1 degrees.

Claims

1. A flexible welding tooling assembly table for rear axle housing accessory brackets, characterized in that... include: The fixture base (1), rear axle main reduction flange positioning unit (2), pneumatic booster cylinder (3), main slide rail (4), clamping mechanism (5), and rear axle wheel end flange positioning unit (6) are provided. The main slide rail (4) and rear axle main reduction flange positioning unit (2) are mounted on the fixture base (1). The rear axle wheel end flange positioning units (6) are slidably mounted in pairs on the main slide rail (4). The two rear axle wheel end flange positioning units (6) are located at both ends of the fixture base (1). The rear axle main reduction flange positioning unit (3) is mounted on the main slide rail (4). The flange positioning unit (2) is located between the two rear axle wheel end flange positioning units (6). The clamping mechanism (5) is installed on the rear axle main reduction flange positioning unit (2) to clamp the rear axle main reduction flange (901). One end of the pneumatic booster cylinder (3) is fixed on the tooling base (1) and the other end is connected to the rear axle wheel end flange positioning unit (6). A pneumatic chuck (7) is installed on the rear axle wheel end flange positioning unit (6). The pneumatic chuck (7) is used to position and clamp the rear axle wheel end flange (902).

2. The flexible welding tooling assembly platform for rear axle housing accessory brackets according to claim 1, characterized in that: It also includes an accessory bracket positioning unit (8) disposed on the tooling base (1), the accessory bracket positioning unit (8) includes a positioning block (801) and a support connection block (802), the support connection block (802) and the positioning block (801) are connected.

3. The flexible welding tooling assembly platform for rear axle housing accessory brackets according to claim 1, characterized in that: The clamping mechanism (5) includes a clamping cylinder (501) and a pneumatic chuck (502) mounted on the clamping cylinder (501).

4. The flexible welding tooling assembly platform for rear axle housing accessory brackets according to claim 1, characterized in that... The rear axle wheel end flange positioning unit (6) also includes a housing (601) disposed between the pneumatic chuck (7) and the pneumatic booster cylinder (3), and an indexing plate (602) is installed inside the housing (601).

5. The flexible welding tooling assembly platform for rear axle housing accessory brackets according to claim 1, characterized in that: The perpendicularity of the concentric axes of the two pneumatic chucks (7) is less than 0.1 mm, and the rotational positioning angle accuracy of the rear axle wheel end flange (902) is less than 0.1 degrees.

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