Positioning tool for stud welding

Abstract

The utility model relates to the technical field of bullet train part welding tools, in particular to a positioning tool for stud welding, which comprises a positioning plate and a support plate, and the positioning plate is rotatably connected with one side end of the support plate through a hinge structure. A panel positioning groove is formed in the positioning plate, and a stud positioning hole and an exhaust hole are formed in the panel positioning groove and connected through an exhaust groove. The tool has the beneficial effects that the structure is precise, the operation is simple and convenient, the positioning is accurate, and the problems that the welding tolerance exceeds the requirement, the repair rate is high and the production efficiency is low in the prior art are effectively solved. Through the innovative design, high-precision welding is achieved, the welding quality is ensured, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding tooling for motor vehicle parts, and particularly relates to a positioning tooling for stud welding. Background Art

[0002] In the field of EMU manufacturing, panels are a key component of the EMU's internal structure and need to be installed in the reserved position of the EMU by welding studs from the back. Welding accuracy is crucial to the quality of panel installation.

[0003] 1. Traditional welding schemes rely on manual marking and positioning. Although this method can guide the welding position to a certain extent, it is often difficult to achieve high-precision welding requirements due to human factors and limitations of tool accuracy. Especially in the welding process of EMU panels and studs, the drawings ( Figure 1 and 2 ) The specified finished product size tolerance is ±0.25mm. Excluding other process tolerances, the welding tolerance is required to be controlled within ±0.10mm to ensure that the welded panel can be accurately installed in the reserved position of the EMU.

[0004] The inefficiencies and inaccuracies of traditional welding methods lead to a high rate of rework during production, which not only increases production costs but also reduces efficiency. Furthermore, errors in the welding process can lead to deviations in the installation position of the EMU panels. Utility Model Content

[0005] This utility model aims to provide a stud welding positioning fixture with a precise structure, simple operation, and accurate positioning. It aims to address the existing problems of welding tolerances exceeding requirements, high rework rates, and low production efficiency. Through innovative design, it achieves high-precision welding, ensures welding quality, improves production efficiency, and reduces production costs.

[0006] In order to achieve the above-mentioned utility model purpose, the technical solution of the utility model is as follows:

[0007] Provided is a positioning fixture for stud welding, comprising a positioning plate and a support plate, wherein one end of the positioning plate is rotatably connected to one end of the support plate;

[0008] A panel positioning groove is provided on the positioning plate, a stud positioning hole and an exhaust hole penetrating the positioning plate are opened in the panel positioning groove, the stud positioning hole and the exhaust hole are connected through the exhaust groove, and the exhaust groove is provided in the panel positioning groove.

[0009] In one embodiment, a grounding handle is provided on one side of the support plate.

[0010] In one embodiment, an operating handle is provided on one side of the positioning plate.

[0011] In one embodiment, the positioning plate is made of insulating material.

[0012] In one embodiment, the positioning plate is connected to the support plate via a hinge structure.

[0013] In one embodiment, the diameter of the stud locating hole matches the outer diameter of the welding gun chuck.

[0014] Compared with the existing technology, the advantages and beneficial effects of the present invention are: the positioning tool for stud welding of the present invention significantly improves the welding efficiency and quality with its high-precision positioning, strong stability, simple operation, efficient welding and high safety, while reducing the rework rate, meeting the stringent requirements of modern industry for precision manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the panel product to be welded in the background art;

[0016] Figure 2 It is a right side view of the panel product to be welded in the background art;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Numbers in the figure: 10, positioning plate; 11, panel positioning groove; 12, stud positioning hole; 13, exhaust hole; 14, exhaust groove; 15, operating handle; 20, support plate; 21, grounding handle; 30, hinge structure a, panel; b, stud. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0020] When welding the panel parts of a train, the stud welding positioning fixture of this utility model provides an innovative and efficient solution. Figure 1 and Figure 2 The EMU panel a part shown has been specially optimized to ensure that the stud b is welded to the panel a accurately according to the drawing requirements.

[0021] Positioning tooling for stud welding Figure 3As shown in the figure, its core structure consists of a positioning plate 10 and a support plate 20, which are rotatably connected through a hinge structure 30. The hinge point is located at one end of the support plate 20 and is a hinge structure made of high-strength metal parts. A sleeve is fixed on one end face of the support plate 20, and a corresponding sleeve is fixed on the corresponding end face of the positioning plate 10. A pin shaft passes through the sleeves on the support plate 20 and the positioning plate 10 to achieve rotational connection. This ensures the stability and accuracy of the positioning plate 10 during rotation. The positioning plate 10 is made of heat-resistant and insulating engineering plastics. One side of the positioning plate 10 is fixedly connected with an operation handle 15, which is convenient for manual holding and operation, and has anti-slip texture on the surface.

[0022] One side end of the support plate 20 is fixedly connected with a grounding handle 21. The grounding handle 21 and the support plate 20 are of an integral structure, or can also be fixed by welding or bolts, which is convenient for connection with a grounding clamp.

[0023] On the side of the positioning plate 10 close to the support plate 20, there is a panel positioning groove 11. The outer dimensions of the panel positioning groove 11 are adapted to the panel a to be welded. There are precise stud positioning holes 12 in the panel positioning groove 11, and its diameter is exactly matched with the outer diameter of the welding torch chuck. The edge is finely processed to ensure smoothness without burrs, and the depth is precisely calculated to adapt to welding torch chucks of different lengths.

[0024] An exhaust groove 14 is opened in the panel positioning groove 11. One end of the exhaust groove 14 is connected to the stud positioning hole 12, and the other end is connected to an exhaust hole 13. The exhaust hole 13 penetrates through the positioning plate 10. The design of the exhaust hole 13 and the exhaust groove 14 work together to effectively exhaust the gas in the welding area and prevent gas accumulation from affecting the welding quality. The exhaust hole 13 is located in the panel positioning groove 11, and its size and shape are designed to ensure smooth gas discharge without interfering with the welding process.

[0025] In addition, the positioning plate 10 is made of a high-performance insulating material, which effectively isolates the high temperature and current generated during the welding process and protects the safety of the operator. The design of the entire tooling not only improves the welding accuracy and efficiency, but also significantly reduces the rework rate through the application of cooperative positioning and energy storage stud b welding technology, meeting the requirements for high-efficiency and high-quality welding in modern industrial production.

[0026] The usage method of the present utility model is as follows:

[0027] Panel a positioning: First, place the moving train panel a part in the panel positioning groove 11 of the positioning tooling according to the drawing requirements. The dimensions of the panel positioning groove 11 are exactly matched with the outer shape of the panel a to ensure the precise positioning of the panel a before welding.

[0028] Tooling closing: Hold the operation handle 15 by hand, and use the rotational connection characteristic of the tooling to close the positioning plate 10 and press the panel a tightly. This step ensures the stability and accuracy of the panel a during the welding process.

[0029] Ground connection: Locate the grounding handle 21 on one side of the support plate 20 and fix the grounding clamp to it to ensure the correct grounding of the current during the welding process, avoid arc damage and improve the welding quality.

[0030] Welding preparation: Pass the welding torch chuck through the stud positioning hole 12 on the positioning plate 10 at the center of the positioning plate 10. The diameter of the stud positioning hole 12 matches the outer diameter of the welding torch chuck to ensure the precise alignment of the welding torch.

[0031] Gas exclusion: Before welding, exclude the air between the panel a and the positioning plate 10 through the exhaust holes 13 and exhaust grooves 14 in the positioning plate 10 to reduce porosity and deformation during welding.

[0032] Precise welding: Start the welding power supply and perform welding using the energy storage stud welding technology. During the welding process, the stability and precision of the tooling ensure the precise connection between the stud b and the panel a.

[0033] Tooling release: After welding is completed, remove the panel a from the tooling for subsequent inspection and processing.

[0034] The working principle of this positioning tooling for stud welding ensures high precision and high efficiency in the welding process. First, the panel positioning groove 11 adopted by the tooling precisely matches the outer dimensions of the EMU panel a part. Combined with the rotation and closing mechanism of the positioning plate 10, precise positioning of the panel a before welding is achieved, which is the key to the precise positioning principle. The maintenance of stability benefits from the design of the connection mechanism, which together ensure the stability of the panel a during the welding process and effectively prevent displacement caused by vibration or external forces.

[0035] The importance of current grounding is self-evident during the welding process. Through the connection between the grounding handle 21 on the support plate 20 and the grounding clamp, effective grounding of the welding current is achieved, which not only improves the welding quality but also enhances the safety of operation. The gas exclusion mechanism is realized through the design of the exhaust holes 13 and exhaust grooves 14, which work together to exclude the gas in the welding area and avoid welding defects that may be caused by gas accumulation.

[0036] The realization of precise welding technology depends on the application of energy storage stud welding technology. This technology combines the precise matching of the positioning hole and the welding torch chuck to ensure the precise welding of the stud b and the panel a, thereby improving the welding quality and consistency. Finally, the design of the tooling fully considers the convenience of operation. From the placement, positioning, welding to the removal of the panel a, the whole process is designed to be smooth and easy to operate, greatly improving the production efficiency and operation experience. The comprehensive application of these designs makes this tooling have significant application value and market potential in modern industrial production.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. A positioning tooling for stud welding, characterized in that, It includes a positioning plate (10) and a support plate (20), and one side end of the positioning plate (10) is rotatably connected to one side end of the support plate (20); The positioning plate (10) is provided with a panel positioning groove (11), and a stud positioning hole (12) and an exhaust hole (13) penetrating the positioning plate (10) are formed in the panel positioning groove (11). The stud positioning hole (12) is connected to the exhaust hole (13) through an exhaust groove (14), and the exhaust groove (14) is arranged in the panel positioning groove (11).

2. The positioning tooling for stud welding according to claim 1, wherein, One side of the support plate (20) is provided with a grounding handle (21).

3. The positioning tooling for stud welding according to claim 1, characterized in that, One side of the positioning plate (10) is provided with an operation handle (15).

4. The positioning tooling for stud welding according to claim 1, characterized in that, The positioning plate (10) is made of insulating material.

5. The positioning tooling for stud welding according to claim 1, wherein The positioning plate (10) is connected to the support plate (20) through a hinge structure.

6. The positioning tooling for stud welding according to claim 1, characterized in that, The diameter of the stud positioning hole (12) matches the outer diameter of the welding torch chuck.

Images