Arc clamping device for automobile swing arm welding positioning

Abstract

The novel arc-shaped clamping device for automobile swing arm welding positioning comprises a welding table, a rotatable welding frame arranged in the center of the welding table, a plurality of movable upper end clamping mechanisms arranged on the top of the long side frame edges of the welding frame, a plurality of supporting rods fixedly installed in the inner cavity of the welding frame, and an equal interval distribution between the supporting rods, wherein the middle part is concave downward; the clamping mechanism comprises a mounting frame and two double-rotation-direction screw rods, the two double-rotation-direction screw rods are respectively rotatably installed on the left and right sides of the mounting frame, and the two double-rotation-direction screw rods are symmetrically arranged; the upper and lower ends of each double-rotation-direction screw rod are threadedly connected with a moving block, and the two moving blocks on the upper side and the two moving blocks on the lower side are fixedly installed with a connecting plate, and the inner side of each connecting plate is fixedly installed with an arc-shaped clamping plate. The rotatable welding frame and the clamping mechanism movable along the frame are combined to realize the rapid positioning of the swing arm and adapt to the different welding position requirements.

Description

Technical Field

[0001] This utility model relates to the field of automotive swing arm welding technology, specifically to an arc-shaped clamping device for positioning automotive swing arm welding. Background Technology

[0002] The control arm is the connection mechanism between the vehicle frame and the wheels. Its main function is to support the vehicle body and shock absorbers, and to buffer vibrations during the shock absorber's operation. Specifically, the control arm guides and supports the suspension. Deformation of the control arm will affect wheel alignment and reduce driving stability.

[0003] During the production of automotive swing arms, they need to be welded to other components such as axle sleeves. Traditional clamping devices suffer from the following technical challenges in the welding and manufacturing process of automotive swing arms: insufficient adaptability – automotive swing arms typically have complex arc-shaped structures, and traditional rigid clamps struggle to conform to the curved surfaces, leading to low positioning accuracy and welding deformation. Especially for different swing arm models, frequent clamp changes are necessary, resulting in low efficiency. Poor adjustment flexibility – existing clamping mechanisms mostly use unidirectional screws or fixed jaws, making it impossible to simultaneously adjust the distance between the upper and lower clamping points. This makes it difficult to adapt to workpieces of different thicknesses or curvatures, and manual adjustment is time-consuming and labor-intensive. Limited welding accessibility – fixed welding tables require manual rotation of the workpiece to complete multi-sided welding, while ordinary rotating mechanisms lack precise angle control, affecting the consistency of weld quality. Therefore, this paper proposes an arc-shaped clamping device for automotive swing arm welding positioning. Through an innovative design of a rotatable welding frame, an arc-shaped clamping mechanism driven by dual-directional screws, and a recessed support rod, the above problems are specifically addressed. Utility Model Content

[0004] To address the problems in existing technologies, this utility model proposes an arc-shaped clamping device for welding and positioning automotive swing arms. Through the innovative design of a rotatable welding frame, an arc-shaped clamping mechanism driven by dual-directional screws, and a recessed support rod, it achieves advantages such as high-precision positioning, rapid form change, stable clamping, and automated welding. It is suitable for welding production of complex curved surface parts such as automotive swing arms, and can significantly improve welding quality, efficiency, and consistency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An arc-shaped clamping device for welding and positioning automotive control arms includes a welding table. A rotatable welding frame is located at the center of the welding table. Several upper clamping mechanisms that move along the long edge of the welding frame are located at the top of the frame's long edge. Several support rods are fixedly installed inside the welding frame, and these support rods are evenly spaced. The middle portion of each support rod is concave. The clamping mechanism includes a mounting frame and two double-rotation screws. The two double-rotation screws are rotatably mounted on the left and right sides of the mounting frame, and are symmetrically arranged. Each double-rotation screw has a moving block threaded to its upper and lower ends. A connecting plate is fixedly installed between the two upper moving blocks and between the two lower moving blocks. An arc-shaped clamping plate is fixedly installed on the inner side of each connecting plate.

[0007] Furthermore, connecting seats are fixedly installed on both the left and right sides of the top of the welding table by bolts. A connecting shaft is rotatably installed inside each of the two connecting seats. One end of the connecting shaft is connected to the welding frame. Stepper motors are provided on both the left and right sides of the welding table. The output end of the stepper motor is connected to the other end of the connecting shaft.

[0008] Furthermore, the upper end of the long side edge of the welding frame is provided with the same slide rail, and the upper end of the slide rail is provided with multiple limiting grooves; the bottom of the mounting frame of the upper clamping mechanism is provided with a sliding seat; the sliding seat is slidably mounted on the slide rail.

[0009] Furthermore, a sliding groove is provided at the bottom of the sliding seat, and a limiting hole is provided on the side of the sliding groove; when the sliding seat slides to the point where the limiting hole and the limiting groove are aligned, a pin is inserted into the limiting hole for positioning.

[0010] Furthermore, the dual-rotation screw is driven by a handwheel or by electricity.

[0011] Furthermore, anti-slip raised pads are installed on the inner side of the arc-shaped clamping plate.

[0012] Furthermore, the bottom of the welding station is hollowed out.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This novel design incorporates a rotatable welding frame, a dual-directional screw-driven arc-shaped clamping mechanism, and a recessed support rod. The dual-directional screw-driven arc-shaped clamping plate allows for simultaneous adjustment of the distance between the upper and lower clamping points, ensuring uniform distribution of clamping force, preventing workpiece displacement or deformation, and improving welding alignment accuracy. The recessed support rod, with its concave design in the middle, provides stable support for protruding parts of the weldment, preventing displacement caused by vibration or thermal deformation during welding.

[0015] 2. The clamping mechanism can be flexibly adjusted on the slide rail of the welding frame to adapt to swing arms of different lengths.

[0016] The clamping mechanism is quickly fixed by the limiting groove and the pin, which improves the efficiency of changing shapes and reduces the time for manual adjustment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a top view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall side view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall right-side structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the upper clamping mechanism of this utility model installed on the slide rail;

[0022] Figure 5 This is a schematic diagram of the sliding seat structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the axial structure of the upper clamping mechanism of this utility model;

[0024] Figure 7 This is a front view structural diagram of the upper clamping mechanism of this utility model.

[0025] The diagram is labeled as follows: 1-Welding table; 101-Stepper motor; 102-Connecting seat; 2-Welding frame; 20-Supporting rod; 21-Slide rail; 22-Sliding seat; 221-Slide groove; 222-Limiting hole; 23-Pin; 3-Upper clamping mechanism; 31-Double-rotating screw; 32-Moving block; 33-Connecting plate; 34-Arc-shaped clamping plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figure 1-4 As shown, this embodiment provides an arc-shaped clamping device for welding and positioning automotive swing arms, including a welding table 1 with a hollowed-out bottom.

[0029] The welding table 1 has a rotatable welding frame 2 in the center. The welding frame 2 has several upper clamping mechanisms 3 that move along its long edge on the top of the long edge. Several support rods 20 are fixedly installed in the inner cavity of the welding frame 2, and the support rods 20 are evenly distributed. The middle part of the support rods 20 is concave downward.

[0030] The welding table 1 has connecting seats 102 fixedly installed on both the left and right sides of the top by bolts. Each of the two connecting seats 102 has a connecting shaft rotatably installed inside. One end of the connecting shaft is connected to the welding frame 2. Stepper motors 101 are provided on both the left and right sides of the welding table 1. The output end of the stepper motor 101 is connected to the other end of the connecting shaft.

[0031] The clamping mechanism 3 includes a mounting frame and two double-rotating screws 31. The two double-rotating screws 31 are rotatably mounted on the left and right sides of the mounting frame, and are arranged symmetrically. Each double-rotating screw 31 has a moving block 32 threadedly connected to its upper and lower ends. A connecting plate 33 is fixedly installed between the two upper moving blocks 32 and between the two lower moving blocks 32. An arc-shaped clamping plate 34 is fixedly installed on the inner side of each connecting plate 33. Anti-slip convex pads are installed on the inner side of the arc-shaped clamping plate (34). The double-rotating screws 31 are driven by a handwheel or by electricity.

[0032] The upper end of the long side edge of the welding frame 2 is provided with the same slide rail 21, and the upper end of the slide rail 21 is provided with multiple limiting grooves; the bottom of the mounting frame of the upper clamping mechanism 3 is provided with a sliding seat 22; the sliding seat 22 is slidably mounted on the slide rail 21.

[0033] A sliding groove 221 is provided at the bottom of the sliding seat 22, and a limiting hole 222 is provided on the side of the sliding groove 221; when the sliding seat 22 slides to the point where the limiting hole 222 and the limiting groove are aligned, a pin 23 is inserted into the limiting hole 222 for positioning.

[0034] In actual operation, the car swing arm workpiece is placed on the support rod 20 inside the welding frame 2, and the initial positioning is achieved by using the concave structure in the middle of the support rod; the operator turns the handwheel or starts the motor to drive the double-rotating screw 31 to rotate. The rotation of the screw drives the upper and lower moving blocks 32 to move synchronously in opposite directions. The connecting plate 33 links the two arc-shaped clamping plates 34 on both sides to close / open. The anti-slip convex pads are tightly attached to the curved surface of the workpiece to complete the fixation of both ends of the car swing arm.

[0035] Loosen the pin 23, push the sliding seat 22 along the slide rail 21, and slide the slide groove 221 in cooperation with the slide rail. After adjusting the spacing of the clamping mechanism 3 to align with the limiting hole 222 and the limiting groove, insert the pin to lock the position. The stepper motor 101 drives the welding frame 2 to rotate through the connecting shaft, and precisely controls the rotation angle (0-360° continuously adjustable) so that the part to be welded is always in the best welding position.

[0036] After completing the current welding position, the stepper motor drives the workpiece to rotate, enabling continuous circumferential welding without disassembly. During the workpiece removal stage, the double-rotating screw 31 is rotated in the opposite direction to loosen the clamping plate 34, and the stepper motor 101 resets the welding frame 2 to the initial angle, hoisting the welded finished product and preparing for the next workpiece clamping.

[0037] The design incorporates a rotatable welding frame, a dual-directional screw-driven arc-shaped clamping mechanism, and a recessed support rod. The dual-directional screw-driven arc-shaped clamping plate allows for simultaneous adjustment of the distance between the upper and lower clamping points, ensuring uniform clamping force distribution, preventing workpiece displacement or deformation, and improving welding alignment accuracy. The recessed support rod, with its concave design in the middle, provides stable support for protruding parts of the weldment, preventing displacement caused by vibration or thermal deformation during welding.

[0038] The clamping mechanism can be flexibly adjusted on the slide rail of the welding frame to accommodate swing arms of different lengths. The clamping mechanism is quickly secured using limit slots and pins, improving changeover efficiency and reducing manual adjustment time.

[0039] The above description is merely an illustrative example of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in the claims, all of which should fall within the protection scope of this utility model.

Claims

1. An arc-shaped clamping device for welding and positioning automotive swing arms, comprising a welding table (1), characterized in that, The welding table (1) has a rotatable welding frame (2) in the center. The welding frame (2) has several upper clamping mechanisms (3) that move along its long edge. The welding frame (2) has several support rods (20) fixedly installed in its inner cavity. The support rods (20) are evenly spaced and the middle part of the support rods (20) is recessed downward. The clamping mechanism (3) includes a mounting frame and two double-rotation screws (31). The two double-rotation screws (31) are rotatably installed on the left and right sides of the mounting frame, and the two double-rotation screws (31) are symmetrically arranged. Each double-rotation screw (31) has a moving block (32) threadedly connected to its upper and lower ends. A connecting plate (33) is fixedly installed between the two upper moving blocks (32) and between the two lower moving blocks (32). An arc-shaped clamping plate (34) is fixedly installed on the inner side of each connecting plate (33).

2. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 1, characterized in that, The welding table (1) has connecting seats (102) fixedly installed on the left and right sides of the top by bolts. The two connecting seats (102) have connecting shafts rotatably installed inside. One end of the connecting shaft is connected to the welding frame (2). The welding table (1) has stepper motors (101) on both the left and right sides. The output end of the stepper motor (101) is connected to the other end of the connecting shaft.

3. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 1, characterized in that, The upper end of the long side edge of the welding frame (2) is provided with the same slide rail (21), and the upper end of the slide rail (21) is provided with multiple limiting grooves; the bottom of the mounting frame of the upper clamping mechanism (3) is provided with a sliding seat (22); the sliding seat (22) is slidably mounted on the slide rail (21).

4. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 3, characterized in that, The bottom of the sliding seat (22) is provided with a sliding groove (221), and the side of the sliding groove (221) is provided with a limiting hole (222); when the sliding seat (22) slides to the point where the limiting hole (222) and the limiting groove are aligned, a pin (23) is inserted into the limiting hole (222) for positioning.

5. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 1, characterized in that, The dual-rotating screw (31) is driven by a handwheel or by electricity.

6. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 1, characterized in that, Anti-slip convex pads are installed on the inner side of the arc-shaped clamping plate (34).

7. The arc-shaped clamping device for welding and positioning automotive swing arms according to claim 1, characterized in that, The bottom of the welding table (1) is hollowed out.

Images