Welding positioning tool for welding thin-wall part with U-shaped pipe

Abstract

The utility model relates to a welding positioning tool, in particular to a welding positioning tool for welding a thin-wall part with U-shaped pipes, a plurality of U-shaped pipes are positioned to a welding position by corresponding U-shaped pipe positioning grooves, and the thin-wall part is positioned to the welding position by a thin-wall part positioning structure, so that uniform welding operation can be carried out. Deformation and machining errors caused by multiple times of moving and positioning are avoided, and then the machining efficiency and the machining precision are improved.

Description

Technical Field

[0001] This utility model relates to welding positioning fixtures, and more particularly to welding positioning fixtures for welding thin-walled parts with U-shaped tubes. Background Technology

[0002] In terms of structural design, welding fixtures and parts need to be easy to assemble and disassemble. During the assembly process, the pressure of the welding fixture on the parts should be evenly distributed to avoid clamping deformation of the parts. For thin-walled parts, clamping deformation will cause uneven welds, increase welding difficulty, and make the welding process time-consuming and labor-intensive. In addition, once clamping deformation occurs, the dimensions of the parts cannot be guaranteed after welding, which can easily lead to the scrapping of the parts.

[0003] Based on the tooling design requirements, the parts to be welded should be assembled in the tooling for easy positioning. The welding position should be on the outside of the tooling, with no interfering structures around it. The tooling material should have good heat transfer performance to facilitate heat dissipation and reduce welding deformation of the parts.

[0004] Direct welding of machined parts results in uneven surfaces at the weld location after heating, and stress deformation of the weld surface, which cannot be corrected after welding, leading to product defects. When processing large batches of products, the overall quality of the batch cannot be guaranteed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a welding positioning fixture for welding thin-walled parts with U-shaped tubes, which can simultaneously weld multiple U-shaped tubes to thin-walled parts.

[0006] This utility model is achieved through the following technical solution: a welding positioning fixture for welding thin-walled parts with U-shaped tubes, including a welding fixture body, a plurality of U-shaped tube positioning grooves are provided on the welding fixture body, and the welding fixture body is also connected to a thin-walled part positioning structure, wherein the U-shaped tube and the thin-walled part are respectively positioned to the welding position by the corresponding U-shaped tube positioning grooves and the thin-walled part positioning structure.

[0007] Furthermore, the main body of the welding fixture is disc-shaped, and multiple U-shaped tube positioning grooves are distributed on the same circumference of the main body of the welding fixture.

[0008] Furthermore, the main body of the welding fixture is connected to a cooling device, which includes a ventilation slot on the main body of the welding fixture, a U-shaped tube positioning slot at the bottom of the ventilation slot, an air inlet at the bottom of the ventilation slot, and an upper surface of the ventilation slot that mates with a thin-walled part.

[0009] Furthermore, the air inlet is located on the outer wall of at least one U-shaped tube positioning groove.

[0010] Furthermore, the thin-walled component positioning structure includes an outer pressure ring that mates with the outer edge of the thin-walled component and an inner pressure plate that mates with the inner edge of the thin-walled component, with a welding operation port formed between the outer pressure ring and the inner pressure plate.

[0011] Furthermore, it also includes a welding fixture base, which has an installation groove that mates with the welding fixture body, and the outer pressure ring is connected to the welding fixture base.

[0012] The beneficial effects of this utility model are as follows: multiple U-shaped tubes are positioned to the welding position by the corresponding U-shaped tube positioning grooves, and thin-walled parts are positioned to the welding position by the thin-walled part positioning structure, thereby enabling unified welding operations, avoiding deformation and processing errors caused by multiple positioning movements, and thus improving processing efficiency and processing accuracy. Attached Figure Description

[0013] Figure 1 Schematic diagram of the main view section;

[0014] Figure 2 This is a top view of Example 1;

[0015] Figure 3 This is a top view of the main body of the welding fixture;

[0016] Figure 4 This is a top view of a thin-walled component;

[0017] Figure 5 This is a schematic diagram of the front view of a U-shaped tube.

[0018] The components are: 1. Welding fixture base; 2. Welding fixture body; 3. U-shaped tube positioning groove; 4. U-shaped tube; 5. Ventilation slot; 6. Thin-walled component; 7. Outer pressure ring; 8. Welding operation port; 9. Bolt 1; 10. Inner pressure plate; 11. Bolt 2; 12. Connecting hole; 13. Threaded hole. Detailed Implementation

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0020] 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 scope of protection of the present utility model.

[0021] Example 1

[0022] like Figure 1-5 As shown, a welding positioning fixture for welding thin-walled parts with U-shaped tubes is used to weld multiple U-shaped tubes 4 onto a circular thin-walled part 6, specifically 10 U-shaped tubes 4. The two ends of the U-shaped tubes 4 have different lengths. A connecting hole 12 that matches the long end is machined on the thin-walled part 6. The long end is welded and fixed to the connecting hole 12, and a gap is reserved between the short end and the thin-walled part 6.

[0023] The assembly includes a welding fixture body 2, which is disc-shaped and mounted on a welding fixture base 1. The welding fixture base 1 has mounting grooves that mate with the welding fixture body 2, thus making the welding fixture body 2 more stable. Ten upward-facing U-shaped tube positioning grooves 3 are machined on the welding fixture body 2, which are distributed on the same circumference of the welding fixture body 2 to match the shape of the workpiece and facilitate welding operations. U-shaped tubes 4 are inserted into the U-shaped tube positioning grooves 3 with both ends facing upwards. There is a clearance fit between the U-shaped tubes 4 and the inner wall of the U-shaped tube positioning grooves 3, thereby positioning the U-shaped tubes 4 in the welding position.

[0024] The welding fixture body 2 is also connected to a thin-walled part positioning structure. The upper end of the welding fixture body 2 is machined into a contour seat that matches the thin-walled part 6, and then conforms to the lower end face of the thin-walled part 6 to protect the thin-walled part 6. The thin-walled part positioning structure includes an outer pressure ring 7 that matches the outer edge of the thin-walled part 6 and an inner pressure plate 10 that matches the inner edge of the thin-walled part 6. A welding operation port 8 is formed between the outer pressure ring 7 and the inner pressure plate 10. The outer pressure ring 7 is connected to the welding fixture base 1 by bolt 1 9, and the inner pressure plate 10 is connected to the welding fixture body 2 by bolt 2 11. A threaded hole 13 that matches bolt 2 11 is machined in the middle of the welding fixture body 2. Both the outer pressure ring 7 and the inner pressure plate 10 conform to the upper end face of the thin-walled part 6 to protect the thin-walled part 6. After positioning, the thin-walled part 6 is positioned in the welding position, and the U-shaped tube 4 matches the thin-walled part 6 to perform the welding operation.

[0025] The welding fixture body 2 is connected to a cooling device, which includes a ventilation groove 5 machined on the welding fixture body 2. The ventilation groove 5 is machined along the middle position of the contour seat and is a continuous annular groove. U-shaped tube positioning grooves 3 are distributed at the bottom of the ventilation groove 5. An air inlet is connected to the bottom of the ventilation groove 5. In this embodiment, the air inlet is connected to the outer wall of one of the U-shaped tube positioning grooves 3, so that air is sent from the bottom to the top. The upper end face of the ventilation groove 5 is matched with the thin-walled part 6, so as to form a ventilation channel with walls on all sides. After the compressed gas enters from the air inlet, part of it enters through the short end of the U-shaped tube 4 and is discharged from the long end of the U-shaped tube 4, which cools the inner wall of the welding area and removes welding debris.

[0026] Ten U-shaped tubes 4 are positioned to the welding position by the corresponding U-shaped tube positioning grooves 3, and the thin-walled parts 6 are positioned to the welding position by the thin-walled parts positioning structure, so that a unified welding operation can be performed, avoiding deformation and processing errors caused by multiple positioning movements, thereby improving processing efficiency and processing accuracy, and enabling rapid cooling.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding positioning fixture for welding thin-walled parts with U-shaped tubes, characterized in that, The welding tool body is provided with a plurality of U-shaped tube positioning grooves, and is further connected with a thin-walled part positioning structure, and the U-shaped tube and the thin-walled part are positioned to the welding position by the corresponding U-shaped tube positioning groove and thin-walled part positioning structure.

2. The welding positioning tool for welding a thin-walled member of a U-shaped pipe according to claim 1, wherein The welding tool body is disc-shaped, and the plurality of U-shaped tube positioning grooves are distributed on the same circumference of the welding tool body.

3. The welding positioning tool for welding a thin-walled member of a U-shaped pipe according to claim 2, wherein The welding tool body is connected with a cooling device, which comprises a ventilation groove arranged on the welding tool body, the U-shaped tube positioning groove is arranged at the bottom of the ventilation groove, the bottom of the ventilation groove is connected with an air inlet, and the upper end surface of the ventilation groove is matched with the thin-walled part.

4. The welding positioning tool for welding a thin-walled member with a U-shaped pipe according to claim 3, wherein The air inlet is arranged at the outer wall of at least one U-shaped tube positioning groove.

5. The welding positioning tool for welding a thin-walled member of a U-shaped pipe according to claim 4, wherein The thin-walled part positioning structure comprises an outer pressing ring matched with the outer edge of the thin-walled part and an inner pressing plate matched with the inner edge of the thin-walled part, and a welding operation opening is formed between the outer pressing ring and the inner pressing plate.

6. The welding positioning tool for welding a thin-walled member of a U-shaped pipe according to claim 5, wherein The welding tool base is further provided with a mounting groove matched with the welding tool body, and the outer pressing ring is connected with the welding tool base.

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