Inner sleeve assembly welding tool

Abstract

The utility model belongs to the technical field of automobile steering, and particularly relates to an inner sleeve assembly welding tool. The device comprises a bottom plate, a first vertical plate, a second vertical plate, an axial pressing device and a radial pressing device are arranged on the bottom plate, a to-be-welded part fixing support is fixed by matching the first vertical plate with a plug pin, another to-be-welded part inner sleeve is arranged above the fixing support, a mounting groove is formed in one end of a small-diameter section of the inner sleeve, and a clamping groove is formed in the other end of the small-diameter section of the inner sleeve. The second vertical plate is arranged on one side of the small-diameter section of the inner sleeve, the axial pressing device is arranged on one side of the large-diameter section of the inner sleeve, an angle limiting mandrel is arranged between the second vertical plate and the inner sleeve, a limiting protrusion matched with the mounting groove is arranged on the side face of the angle limiting mandrel, and a cushion block is arranged between the angle limiting mandrel and the second vertical plate. The inner sleeve is limited and clamped through the angle limiting mandrel, the cushion block, the radial pressing device and the axial pressing device, the size and angle deviation in the welding process is reduced, and the stability and the yield are improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive steering technology, specifically relating to a welding tool for an inner sleeve assembly. Background Technology

[0002] With economic development, automobile ownership has increased significantly, making the steering column an ​​indispensable component. The steering column is the connecting part installed between the steering wheel and the steering gear, primarily used to control the vehicle's direction of travel, transmit torque, and absorb energy during a collision. The structural precision and welding quality of the steering column directly affect the vehicle's handling stability and safety. A steering column typically consists of several parts: an outer sleeve assembly, an inner sleeve assembly, a steering shaft assembly, and a support assembly. The inner and outer sleeve assemblies provide the column's collapsible function, the sleeve assembly and support assembly provide the column's tilt function, and the sleeve assembly and steering shaft assembly enable the steering function. The inner sleeve assembly includes the inner sleeve and a fixed support, which require welding during production and assembly. Traditional inner sleeve welding uses keyhole positioning, which suffers from large angular dimensional deviations and poor stability. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a welding fixture for inner sleeve components, which achieves precise positioning through an angle-limiting mandrel and an axial-limiting pad, thus solving the problem of angle deviation in traditional welding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution, including a base plate, on which a first upright plate, a second upright plate, an axial pressing device, and a radial pressing device are provided. A fixing bracket is fixed to the first upright plate, and an inner sleeve is provided above the fixing bracket. One end of the small diameter section of the inner sleeve is provided with several mounting grooves. The second upright plate is provided on one side of the small diameter section of the inner sleeve, and the axial pressing device is provided on one side of the large diameter section of the inner sleeve. An angle limiting mandrel is provided between the second upright plate and the inner sleeve. The side of the angle limiting mandrel is provided with several limiting protrusions that match the mounting grooves. A pad is provided between the angle limiting mandrel and the second upright plate.

[0005] As a preferred embodiment of this utility model, the fixed bracket is provided with a through hole, and the first upright plate is provided with a corresponding mounting hole. The fixed bracket and the first upright plate are fixedly connected through the through hole, the mounting hole and the pin.

[0006] As another preferred embodiment of this utility model, the axial clamping device and the radial clamping device are quick clamps.

[0007] As a third preferred embodiment of this utility model, a support plate is provided between the inner sleeve and the base plate, and the support plate corresponds to the position of the radial pressing device.

[0008] The beneficial effects of this utility model are as follows: This utility model proposes a welding fixture for inner sleeve components. By aligning the mounting groove of the small-diameter section of the inner sleeve with the limiting protrusion on the angle limiting mandrel, and then restricting the degree of freedom of the inner sleeve through an axial clamping device and a radial clamping device, the inner sleeve of the component to be welded is fixed. The other component to be welded is fixedly connected to the first upright plate through a pin, ensuring that both components to be welded can be securely fixed, improving dimensional stability and production efficiency, and reducing the scrap rate. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the inner sleeve structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the angle-limiting mandrel structure of this utility model.

[0012] In the attached diagram, 1 is the axial clamping device, 2 is the inner sleeve, 3 is the fixed bracket, 4 is the pin, 5 is the radial clamping device, 6 is the support plate, 7 is the base plate, 8 is the angle limiting mandrel, 9 is the pad, 10 is the second vertical plate, 11 is the welding point, 12 is the mounting groove, 13 is the through hole, and 14 is the limiting protrusion. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figures 1-3 As shown, the present invention adopts the following specific solution, including a base plate 7, on which a first upright plate, a second upright plate 10, an axial pressing device 1, and a radial pressing device 5 are provided. A fixing bracket 3 is fixed by the two first upright plates. An inner sleeve 2 is provided above the fixing bracket 3. A plurality of mounting grooves 12 are evenly provided circumferentially at one end of the small diameter section of the inner sleeve 2. The second upright plate 10 is provided on one side of the small diameter section of the inner sleeve 2. The axial pressing device 1 is provided on one side of the large diameter section of the inner sleeve 2. An angle limiting mandrel 8 is provided between the second upright plate 10 and the inner sleeve 2. A plurality of limiting protrusions 14 matching the mounting grooves 12 are provided on the side of the angle limiting mandrel 8. A pad 9 is provided between the angle limiting mandrel 8 and the second upright plate 10.

[0015] After the limiting protrusion 14 on the angle limiting mandrel 8 is aligned with the mounting groove 12 on the inner sleeve 2, the rotational freedom of the inner sleeve 2 can be restricted and accurately positioned. The axial degree of freedom of the inner sleeve 2 is restricted by the axial clamping device 1 in conjunction with the angle limiting mandrel 8 and the pad 9. The radial degree of freedom of the inner sleeve 2 is restricted by the radial clamping device 5.

[0016] As a preferred embodiment of this utility model, the fixed bracket 3 is provided with a through hole 13, and the first upright plate is provided with a corresponding mounting hole. The fixed bracket 3 and the first upright plate are fixedly connected through the through hole 13, the mounting hole and the pin 4.

[0017] As another preferred embodiment of this utility model, the axial clamping device 1 and the radial clamping device 5 are quick clamps.

[0018] As a third preferred embodiment of this utility model, a support plate 6 is provided between the inner sleeve 2 and the base plate 7. The support plate 6 corresponds to the radial pressing device 5 and plays an auxiliary support function to improve the stability of welding.

[0019] The inner sleeve 2 and the fixed bracket 3 are provided with welding points 11. There are four sets of welding points 11, which are symmetrically distributed on the inner sleeve 2 and the fixed bracket 3.

[0020] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A welding fixture for assembling an inner sleeve, characterized in that, The device includes a base plate (7), on which a first upright plate, a second upright plate (10), an axial pressing device (1), and a radial pressing device (5) are provided. A fixing bracket (3) is fixed through the first upright plate. An inner sleeve (2) is provided above the fixing bracket (3). Several mounting grooves (12) are provided at one end of the small diameter section of the inner sleeve (2). The second upright plate (10) is located on one side of the small diameter section of the inner sleeve (2). The axial pressing device (1) is located on one side of the large diameter section of the inner sleeve (2). An angle limiting mandrel (8) is provided between the second upright plate (10) and the inner sleeve (2). Several limiting protrusions (14) matching the mounting grooves (12) are provided on the side of the angle limiting mandrel (8). A pad (9) is provided between the angle limiting mandrel (8) and the second upright plate (10).

2. The welding fixture for assembling an inner sleeve as described in claim 1, characterized in that, The fixed bracket (3) is provided with a through hole (13), and the first upright plate is provided with a corresponding mounting hole. The fixed bracket (3) and the first upright plate are fixedly connected through the through hole (13), the mounting hole and the pin (4).

3. The welding fixture for assembling an inner sleeve as described in claim 1, characterized in that, The axial clamping device (1) and the radial clamping device (5) are quick clamps.

4. The welding fixture for assembling an inner sleeve as described in claim 1, characterized in that, A support plate (6) is provided between the inner sleeve (2) and the base plate (7), and the support plate (6) corresponds to the position of the radial pressing device (5).

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