Titanium alloy blade welding tool based on thin-wall cavity

Abstract

The utility model relates to a titanium alloy blade welding tool based on a thin-wall cavity, the welding tool optimizes the ultra-long size processing of a titanium alloy blade, the welding tool comprises an arc-shaped bottom plate, the arc-shaped bottom plate is provided with a plurality of plate characteristic bodies, and the arc-shaped bottom plate is formed by splicing the plurality of plate characteristic bodies; an upper pressing plate is arranged on the end face of the arc-shaped bottom plate and is formed by splicing a plurality of strip-shaped characteristic bodies, the number and the single length of the strip-shaped characteristic bodies are consistent with those of plate characteristic bodies in the arc-shaped bottom plate, and the strip-shaped characteristic bodies are structurally divided into upper and lower material structure characteristics; side pressing plates are arranged on the two sides of the upper pressing plate and are made of die steel, holes in the side pressing plates correspond to the threaded hole positions in the arc-shaped bottom plate, and after the whole welding tool and the titanium alloy blade are assembled, the inner sides of the side pressing plates evenly press the side wings of the blade. According to the novel welding tool, reliable and rigid fixing of the blade in the high-temperature welding process can be achieved, the back face of a welding seam is effectively protected, and the welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing technology, in particular to a titanium alloy blade welding tool based on a thin-wall cavity. Background Art

[0002] The louvers in a new type of air intake filter utilize thin-walled titanium alloy blades with centrally positioned blades. The lower section of the blades is V-shaped, with wider wings on either side. The upper section is slightly concave, forming a closed cavity with the lower section. Because thin-walled titanium alloy profiles are difficult and expensive to manufacture, they are formed from separate sheets of sheet metal and then welded together.

[0003] The difficulties in welding thin-walled titanium alloy parts lie in the following: first, the weld area is easily contaminated by gases and other impurities, causing embrittlement; second, the low elastic modulus makes it difficult to correct deformation at room temperature after the high-temperature stage. Furthermore, the blade structure itself is irregular, thin, and has long welds, resulting in poor rigidity, making it difficult to securely clamp it using conventional tooling. Therefore, it is urgent to design a tooling that can process thin-walled titanium alloy blades. Utility Model Content

[0004] To solve the above technical problems, the utility model provides a titanium alloy blade welding tool based on a thin-walled cavity. The welding tool is optimized for the ultra-long processing of titanium alloy blades and includes a curved bottom plate. The curved bottom plate is provided with a plurality of plate feature bodies, and the curved bottom plate is composed of multiple plate feature bodies;

[0005] An upper pressing plate is provided at the end surface of the arc-shaped bottom plate. The upper pressing plate is composed of a plurality of strip-shaped feature bodies. The number and length of the strip-shaped feature bodies are consistent with the plate feature bodies in the arc-shaped bottom plate. The strip-shaped feature bodies are structurally divided into upper and lower material structural features.

[0006] Side pressure plates are provided on both sides of the upper pressure plate. The side pressure plates are made of die steel. The holes on them correspond to the threaded holes on the arc-shaped bottom plate. After the welding fixture is assembled with the titanium alloy blade, the inner side of the side pressure plates evenly presses the blade side wings.

[0007] After the arc-shaped bottom plate and the upper pressure plate are initially assembled, fixing clips are provided at the aligned end faces. The fixing clips are made of die steel and have a C-shaped cross-section. The bottom of the fixing clip buckles the arc-shaped bottom plate, and a threaded hole is provided at the other end. The screw is turned until the bottom surface of the screw contacts the concave surface of the side pressure plate and gradually tightens the side pressure plate.

[0008] In one embodiment of the present invention, the concave surface of the top of the plate feature body in the arc-shaped bottom plate matches the linear feature of the lower part of the processed blade. At the same time, threaded holes are provided on both sides of the plate feature body, and a boss corresponding to the slide groove of the processing workbench is provided at the bottom.

[0009] In one embodiment of the present invention, the strip-shaped features include upper structural features and lower structural features. The lower structural features are made of brass material to assist welding and heat dissipation, and its shape fits the upper surface of the clamped titanium alloy blade. The upper structural features are made of mold steel and are connected and pressed between the threads and the arc-shaped bottom plate. The overall feature of the upper pressure plate after assembly is narrow at the top and wide at the bottom.

[0010] In one embodiment of the present invention, sufficient working space is formed between the upper pressing plate and the side pressing plates for the welding equipment to move.

[0011] In one embodiment of the present invention, the shape of the middle section of the fixing clamp is consistent with the cross section of the blade cavity, and is provided with openings, one side of which is used for the air inlet of the protective gas and the other side is used for the air outlet.

[0012] The above technical solution of the present invention has the following advantages over the existing technology: the welding tooling described in the present invention can achieve reliable rigid fixation of the blade during the high-temperature welding process, effectively protect the back of the weld, and assist in accelerating cooling through the brass block above, thereby ensuring welding quality, controlling deformation risks, and having a high reuse rate, and being convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0014] Figure 1 This is a schematic structural diagram of a titanium alloy blade welding tool based on a thin-walled cavity according to the present invention;

[0015] Figure 2 It is a side view of the welding tool of the present invention;

[0016] Figure 3 It is a cross-sectional view of the welding tool described in the utility model.

[0017] As shown in the figure, 1. curved bottom plate; 2. side pressure plate; 3. upper pressure plate; 4. fixing clip; 5. connecting strip. DETAILED DESCRIPTION

[0018] like Figure 1 and Figure 2 As shown, this embodiment provides a titanium alloy blade welding tool based on a thin-walled cavity, which is optimized for the ultra-long size processing of titanium alloy blades, and includes an arc-shaped base plate 1. The arc-shaped base plate 1 is provided with a plurality of plate feature bodies, and the arc-shaped base plate 1 is composed of multiple plate feature bodies; the top concave surface of the plate feature body in the arc-shaped base plate 1 is consistent with the linear feature of the lower part of the blade to be processed, and at the same time, threaded holes are provided on both sides of the plate feature body, and a boss corresponding to the slide groove of the processing workbench is provided at the bottom.

[0019] An upper pressure plate 3 is provided at the end face of the arc-shaped bottom plate 1. At the same time, the upper pressure plate 3 is composed of a plurality of strip-shaped feature bodies, the number and single length of which are consistent with the plate feature body in the arc-shaped bottom plate 1. The strip feature body is structurally divided into upper and lower structural features of two materials; the strip features include upper structural features and lower structural features. The lower structural features are made of brass material to assist welding and heat dissipation, and its shape fits the upper surface of the clamped titanium alloy blade. The upper structural features are made of mold steel and are connected and pressed between the arc-shaped bottom plate 1 through threads. The overall feature of the assembled upper pressure plate 3 is narrow at the top and wide at the bottom.

[0020] Side pressure plates 2 are provided on both sides of the upper pressure plate 3, and the side pressure plates 2 are made of die steel, and the openings on them correspond to the threaded holes on the arc-shaped bottom plate 1. After the welding fixture is assembled with the titanium alloy blade, the inner side of the side pressure plate 2 evenly presses the blade side wings; Figure 3 As shown, sufficient working space is formed between the upper pressing plate 3 and the side pressing plate 2 for the movement of the welding equipment.

[0021] After the initial assembly of the curved base plate 1 and the upper pressure plate 3, a fixing clamp 4 is installed at the aligned end faces. Made of die steel, the fixing clamp 4 has a C-shaped cross-section. The lower portion of the fixing clamp 4 holds the curved base plate 1 in place, while the other end has a threaded hole. The screw is turned until the bottom surface of the screw contacts the concave surface of the side pressure plate 2, gradually tightening the side pressure plate 2. The midsection of the fixing clamp 4 has a shape that matches the cross-section of the blade cavity and is provided with openings: one for the inlet of the protective gas and one for the outlet. If the blade is too long and multiple sections of the curved base plate 1 are used, connecting strips 5 are installed between adjacent curved base plates 1.

[0022] The welding tooling described in this embodiment adopts different combinations of component designs based on the processing requirements of the blade structure. At the same time, the components in the tooling are combined with production requirements, and different materials are used for heat dissipation itself to ensure welding quality and form an automated process solution.

[0023] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A titanium alloy blade welding tool based on a thin-walled cavity, the welding tool is optimized for the ultra-long size processing of titanium alloy blades, characterized in that: The arc-shaped bottom plate (1) comprises a plurality of plate feature bodies, and the arc-shaped bottom plate (1) is formed by splicing the plurality of plate feature bodies; An upper pressing plate (3) is provided at the end surface of the arc-shaped bottom plate (1). The upper pressing plate (3) is composed of a plurality of strip-shaped characteristic bodies, the number and length of which are consistent with the plate characteristic bodies in the arc-shaped bottom plate (1). The strip-shaped characteristic bodies are structurally divided into upper and lower structural features of two materials. Side pressure plates (2) are provided on both sides of the upper pressure plate (3), and the side pressure plates (2) are made of die steel, and the openings on the side pressure plates correspond to the threaded holes on the arc-shaped bottom plate (1). After the welding fixture is assembled with the titanium alloy blade, the inner side of the side pressure plates (2) uniformly presses the blade side wings; After the arc bottom plate (1) and the upper pressure plate (3) are preliminarily assembled, a fixing clamp (4) is provided at the two aligned end faces, and the fixing clamp (4) is made of die steel and has a C-shaped cross section. The fixing clamp (4) buckles the arc bottom plate (1) at the bottom, and a threaded hole is provided at the other end. By turning the screw until the bottom surface of the screw contacts the concave surface of the side pressure plate (2) and gradually presses the side pressure plate (2).

2. The welding tool according to claim 1, characterized in that: The concave surface on the top of the plate feature body in the arc-shaped bottom plate (1) matches the linear feature of the lower part of the processed blade. Threaded holes are provided on both sides of the plate feature body, and a boss corresponding to the slide groove of the processing workbench is provided on the bottom.

3. The welding tool according to claim 1, characterized in that: The strip-shaped features include upper structural features and lower structural features. The lower structural features are made of brass material to assist welding and dissipate heat. Its shape fits the upper surface of the clamped titanium alloy blade. The upper structural features are made of mold steel and are connected and pressed between the arc-shaped bottom plate (1) through threads. The overall feature of the assembled upper pressure plate (3) is narrow at the top and wide at the bottom.

4. The welding tool according to claim 1, characterized in that: Sufficient working space is formed between the upper pressing plate (3) and the side pressing plate (2) for the movement of welding equipment.

5. The welding tool according to claim 1, characterized in that: The shape of the middle section of the fixing clamp (4) is consistent with the cross section of the blade cavity, and is provided with openings, one side of which is used for the air inlet of the protective gas, and the other side is used for the air outlet.

6. The welding tool according to claim 1, characterized in that: When the blade is too long and multiple arc-shaped bottom plates (1) are used, connecting strips (5) are provided between adjacent arc-shaped bottom plates (1).

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