Welding clamp for complex curved surface high-temperature alloy tail spraying assembly

Abstract

The utility model discloses a welding clamp for a complex curved surface high-temperature alloy tail spraying assembly, which belongs to the technical field of welding equipment and comprises a wall body, and a positioning support assembly is arranged on the lower surface of the wall body. The positioning and supporting assembly is arranged, the two annular supports on the bottom plate are used for positioning the mounting edges of the product, the coaxiality of the two mounting edges is guaranteed, the supporting blocks are used for supporting the peripheral position of the welding seam of the product, the fitting position of the molded surface of the sheet metal part of the product and the supporting is optimal, and then the baffle is pushed into the outlet position of the product. The center pressing plate and the large pressing plate are adopted to press the installation edge, then the pressing block, the center pressing plate combination and the pressing strip are adopted to press the periphery of the welding seam, the whole clamp is of a split structure, the material and machining cost is reduced, meanwhile, the multiple structures are adopted to press the periphery of the welding seam of a product, and the machining efficiency is improved. The precision of the welding position of the product and the stability in the welding process are guaranteed, and the using effect of the welding clamp is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and in particular relates to a welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly. Background Technology

[0002] The tail nozzle is a component of the turbojet engine of a jet aircraft. Its main function is to spray out the products of fuel combustion, such as carbon dioxide, sulfur dioxide, carbon monoxide, nitrogen oxides, and unburned small-molecule hydrocarbons, to exhaust the exhaust gases. It also uses the reaction force generated by the air during the injection to propel the aircraft. Due to the high temperature during the welding of the tail nozzle assembly, clamps are used to fix the tail nozzle assembly.

[0003] Most of the structures in the tail spray assembly are curved, which makes it easy for the current welding fixture to not fit tightly around the weld when clamping the structure. This results in deviations in the welding accuracy between the structures in the tail spray assembly, thereby reducing the quality and performance of the tail spray assembly. To address this, a welding fixture for complex curved high-temperature alloy tail spray assemblies is provided. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the current welding fixtures are prone to poor fit between structures during the clamping process, and to propose a welding fixture for complex curved surface high temperature alloy tail spray components.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding fixture for a complex curved surface high-temperature alloy tail spray assembly, including a wall, wherein a positioning support assembly is provided on the lower surface of the wall;

[0006] The positioning support assembly includes a base plate, a positioning plate is fixedly installed on the upper surface of the base plate, a groove is provided on the upper surface of the base plate, a central column is fixedly installed on the inner wall of the groove, one end of the central column extends to the outer surface of the upper surface of the positioning plate, and an annular bracket is fixedly installed on the outer surface of the central column.

[0007] As a further description of the above technical solution:

[0008] The upper surface of the base plate is fixedly connected to the lower surface of the wall, and a central pressure plate assembly is provided on the outer surface of the central column.

[0009] As a further description of the above technical solution:

[0010] The central pressure plate assembly includes a central pressure plate, the inner wall of which is fixedly connected to the outer surface of the central column, and a small pressure plate is fixedly installed on the outer surface of the central pressure plate.

[0011] As a further description of the above technical solution:

[0012] A bracket is fixedly installed on the upper surface of the base plate. A sliding groove is provided on the side wall of the bracket. A baffle is fixedly installed on the inner wall of the sliding groove by a slider. A pin is slidably installed on the inner wall of the sliding groove.

[0013] As a further description of the above technical solution:

[0014] The outer surface of the pin is fixedly connected to the inner wall of the slider, and one end of the pin extends to the outside of the bracket.

[0015] As a further description of the above technical solution:

[0016] A support is fixedly installed on the upper surface of the wall, and a pressure block is rotatably installed on the upper surface of the support via a rotating shaft and a torsion spring.

[0017] As a further description of the above technical solution:

[0018] A pad is fixedly installed on the upper surface of the bracket, and a support block is fixedly installed on the upper surface of the pad. The support block has an air vent and an air nozzle hole inside. An air vent pipe is fixedly installed on the inner wall of the air vent, and an air nozzle is fixedly installed on the inner wall of the air nozzle hole. The input end of the air nozzle is fixedly connected to one end of the air vent pipe.

[0019] As a further description of the above technical solution:

[0020] A large pressure plate is fixedly installed on the upper surface of the base plate, a pressure strip is fixedly installed on the upper surface of the pad, and a tie rod is slidably installed on the inner wall of the wall.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, by setting a positioning support component, the product is placed in the fixture. The mounting edges of the product are positioned by two annular brackets on the base plate to ensure the coaxiality of the two mounting edges. The support block supports the periphery of the product weld, so that the product sheet metal surface fits optimally with the support. Then, the baffle is pushed into the product's outlet position, and the fit between the product and the fixture is checked again. The mounting edges are pressed tightly by a central pressure plate and a large pressure plate. Then, the periphery of the weld is pressed tightly by pressure blocks, a combination of central pressure plates, and pressure strips. The fixture is composed of a split structure, which reduces material and processing costs. At the same time, multiple structures are used to press the periphery of the product weld, ensuring the accuracy of the product welding and the stability of the welding process, further improving the use effect of the welding fixture.

[0023] 2. In this utility model, by setting an air nozzle, argon gas is introduced on the back of the weld according to the process requirements. The argon gas is sprayed out from the air nozzle through the air pipe. The weld is positioned and welded using process parameters. After welding, the weld is corrected by a fitter. After correction, the weld is welded again. Argon gas protection is achieved on the back of the product during the welding process, which ensures the quality of the product after welding and further demonstrates the practicality of the welding fixture. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly.

[0025] Figure 2 This is a top view of a welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly.

[0026] Figure 3 This is a schematic cross-sectional view of a welding fixture for a complex curved high-temperature alloy tail nozzle assembly.

[0027] Figure 4 This is a schematic cross-sectional view of the positioning support component in a welding fixture for a complex curved high-temperature alloy tail nozzle assembly.

[0028] Figure 5 This is a schematic cross-sectional view of the central pressure plate assembly in a welding fixture for a complex curved high-temperature alloy tail nozzle assembly.

[0029] Legend:

[0030] 1. Positioning support assembly; 101. Base plate; 102. Central column; 103. Positioning plate; 104. Circular bracket; 2. Wall; 3. Support block; 4. Central pressure plate assembly; 401. Central pressure plate; 402. Small pressure plate; 5. Bracket; 6. Pin; 7. Pad; 8. Support; 9. Pressure block; 10. Tie rod; 11. Pressure strip; 12. Large pressure plate; 13. Baffle; 14. Air nozzle. Detailed Implementation

[0031] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 This utility model provides a technical solution: a welding fixture for a complex curved surface high-temperature alloy tail spray assembly, including a wall 2, wherein a positioning support assembly 1 is provided on the lower surface of the wall 2;

[0033] The positioning support assembly 1 includes a base plate 101, on which a positioning plate 103 is fixedly installed. A groove is provided on the upper surface of the base plate 101, and a central column 102 is fixedly installed on the inner wall of the groove. One end of the central column 102 extends beyond the upper surface of the positioning plate 103. An annular bracket 104 is fixedly installed on the outer surface of the central column 102. The upper surface of the base plate 101 is fixedly connected to the lower surface of the wall 2. A central pressure plate assembly 4 is provided on the outer surface of the central column 102. The central pressure plate assembly 4 includes a central pressure plate 401. The inner wall of 401 is fixedly connected to the outer surface of the central column 102. A small pressure plate 402 is fixedly installed on the outer surface of the central pressure plate 401. A bracket 5 is fixedly installed on the upper surface of the base plate 101. A sliding groove is provided on the side wall of the bracket 5. A baffle 13 is fixedly installed on the inner wall of the sliding groove through a slider. A pin 6 is slidably installed on the inner wall of the sliding groove. The outer surface of the pin 6 is fixedly connected to the inner wall of the slider. One end of the pin 6 extends to the outside of the bracket 5. A support 8 is fixedly installed on the upper surface of the wall 2. A pressure block 9 is rotatably installed on the upper surface of the support 8 through a rotating shaft and a torsion spring.

[0034] The specific implementation method is as follows: the product is placed in the fixture, and the mounting edge of the product is positioned by the two annular brackets 104 on the base plate 101 to ensure the coaxiality of the two mounting edges. The support block 3 supports the periphery of the product weld, so that the product sheet metal surface fits the support best. Then, the baffle 13 is pushed into the product's outlet position, and the fit between the product and the fixture is checked again. The mounting edge is pressed tightly by the central pressure plate 401 and the large pressure plate 12. Then, the periphery of the weld is pressed tightly by the combination of the pressure block 9, the central pressure plate 401, and the pressure strip 11.

[0035] A pad 7 is fixedly installed on the upper surface of the bracket 5, and a support block 3 is fixedly installed on the upper surface of the pad 7. The support block 3 has an air vent and an air nozzle 14 hole inside. An air vent pipe is fixedly installed on the inner wall of the air vent, and an air nozzle 14 is fixedly installed on the inner wall of the air nozzle 14 hole. The input end of the air nozzle 14 is fixedly connected to one end of the air vent pipe. A large pressure plate 12 is fixedly installed on the upper surface of the base plate 101. A pressure strip 11 is fixedly installed on the upper surface of the pad 7. A tie rod 10 is slidably installed on the inner wall of the wall 2.

[0036] The specific implementation method is as follows: Argon gas is introduced on the back side of the weld according to the process requirements. The argon gas is sprayed out from the gas nozzle 14 through the gas pipe. The weld is tack welded using process parameters. After welding, the fitter corrects the weld. After correction, the weld is welded again. After the weld cools, the part is removed.

[0037] Working principle: The product is placed in the fixture, and the mounting edges of the product are positioned by two annular brackets 104 on the base plate 101 to ensure coaxiality of the two mounting edges. The support block 3 supports the periphery of the product weld, so that the product sheet metal surface fits the support optimally. Then, the baffle 13 is pushed into the product's outlet position, and the fit between the product and the fixture is checked again. The mounting edges are pressed tightly by the central pressure plate 401 and the large pressure plate 12. Then, the periphery of the weld is pressed tightly by the combination of pressure block 9, central pressure plate 401, and pressure strip 11. Argon gas is introduced on the back of the weld according to the process requirements. The argon gas is sprayed out from the gas nozzle 14 through the gas pipe. The weld is tack welded according to the process parameters. After welding, the fitter corrects the weld. After correction, the weld is welded. After the weld cools, the part is removed.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly, comprising a wall (2), characterized in that: The lower surface of the wall (2) is provided with a positioning support assembly (1); The positioning support assembly (1) includes a base plate (101), a positioning plate (103) is fixedly installed on the upper surface of the base plate (101), a groove is provided on the upper surface of the base plate (101), a central column (102) is fixedly installed on the inner wall of the groove, one end of the central column (102) extends to the outside of the upper surface of the positioning plate (103), and an annular bracket (104) is fixedly installed on the outer surface of the central column (102).

2. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 1, characterized in that, The upper surface of the base plate (101) is fixedly connected to the lower surface of the wall (2), and the outer surface of the central column (102) is provided with a central pressure plate assembly (4).

3. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 2, characterized in that, The central pressure plate assembly (4) includes a central pressure plate (401), the inner wall of which is fixedly connected to the outer surface of the central column (102), and a small pressure plate (402) is fixedly installed on the outer surface of the central pressure plate (401).

4. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 3, characterized in that, A bracket (5) is fixedly installed on the upper surface of the base plate (101). A sliding groove is provided on the side wall of the bracket (5). A baffle (13) is fixedly installed on the inner wall of the sliding groove by a slider. A pin (6) is slidably installed on the inner wall of the sliding groove.

5. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 4, characterized in that, The outer surface of the pin (6) is fixedly connected to the inner wall of the slider, and one end of the pin (6) extends to the outside of the bracket (5).

6. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 5, characterized in that, A support (8) is fixedly installed on the upper surface of the wall (2), and a pressure block (9) is rotatably installed on the upper surface of the support (8) via a rotating shaft and a torsion spring.

7. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 6, characterized in that, A pad (7) is fixedly installed on the upper surface of the bracket (5), and a support block (3) is fixedly installed on the upper surface of the pad (7). The support block (3) has an air vent and an air nozzle (14) hole inside. An air vent pipe is fixedly installed on the inner wall of the air vent, and an air nozzle (14) is fixedly installed on the inner wall of the air nozzle (14) hole. The input end of the air nozzle (14) is fixedly connected to one end of the air vent pipe.

8. The welding fixture for a complex curved surface high-temperature alloy tail nozzle assembly according to claim 7, characterized in that, A large pressure plate (12) is fixedly installed on the upper surface of the base plate (101), a pressure strip (11) is fixedly installed on the upper surface of the pad (7), and a tie rod (10) is slidably installed on the inner wall of the wall (2).

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