Manufacturing tool for outer wall of diffusion spray pipe

Abstract

The utility model relates to a diffusion spray pipe outer wall manufacturing tool which comprises a spray pipe and an attaching inner sleeve, covering outer sleeves are arranged on the left side and the right side of the attaching inner sleeve respectively, and welding pressing strips are arranged on the front side and the rear side of the attaching inner sleeve respectively. The spraying pipe is composed of two material pieces, the two material pieces are attached to the left side and the right side of the inner sleeve body respectively, then the outer sleeve body covers the outer sides of the left sides or the right sides of the material pieces, and then the pressing strip body covers the outer sides of the front sides or the rear sides of the material pieces. The tool is high in structural strength, not only can achieve forming, but also can achieve welding positioning and shaping after welding, and is a multipurpose tool.

Description

Technical Field

[0001] The utility model relates to the technical field related to engine nozzle processing, in particular to a tool for manufacturing the outer wall of a diffusion nozzle. Background Art

[0002] As part of the rocket engine, the nozzle provides the rocket with ascending power, but it also needs to save its own weight and withstand a certain high temperature, so high-temperature alloys or titanium alloys are used. There is nothing wrong with machining the outer wall of the nozzle through forging, but this will increase the cost of the engine.

[0003] The outer wall of the nozzle must have a small fit error with the inner wall. Only when the error is small can diffusion welding be performed. According to the traditional stainless steel rolling idea, the fit with the inner wall cannot be perfect, which affects the quality of subsequent diffusion welding.

[0004] The traditional one-step rolling process can achieve the forming of stainless steel, but it is not suitable for high-temperature alloys and titanium alloys due to the serious springback. High-temperature alloys and titanium alloys are strong and extremely difficult to form, so it is necessary to assist with manual heating to reduce the height and complete the forming work with less effort.

[0005] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a tooling for manufacturing the outer wall of a diffusion nozzle to make it more valuable for industrial use. Utility Model Content

[0006] In order to solve any of the above technical problems, the purpose of the utility model is to provide a tooling for manufacturing the outer wall of a diffusion nozzle.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A tool for manufacturing the outer wall of a diffusion nozzle, comprising a nozzle and a fitting inner sleeve, a covering outer sleeve being arranged on both the left and right sides of the fitting inner sleeve, and a welding pressure strip being arranged on both the front and rear sides of the fitting inner sleeve;

[0009] The covered coat comprises a coat body, a coat upper cover is arranged on the top of the coat body, and a coat lower cover is arranged on the bottom of the coat body;

[0010] The fitting inner sleeve comprises an inner sleeve body, an inner sleeve upper cover is arranged on the top of the inner sleeve body, and an inner sleeve lower cover is arranged on the bottom of the inner sleeve body;

[0011] The welding pressure strip comprises a pressure strip body, a pressure strip upper cover is arranged on the top of the pressure strip body, and a pressure strip lower cover is arranged on the bottom of the pressure strip body;

[0012] The nozzle is composed of two pieces, which are respectively attached to the left and right sides of the inner sleeve body, and then the outer sleeve body is covered on the outside of the left or right side of the piece, and then the pressure strip body is covered on the outside of the front or rear side of the piece;

[0013] The outer cover is covered on the left or right outer side of the inner cover, the outer cover is covered on the left or right outer side of the inner cover, the pressure strip upper cover is covered on the front or rear outer side of the inner cover, and the pressure strip lower cover is covered on the front or rear outer side of the inner cover.

[0014] As a further improvement of the utility model, positioning gaskets are provided at the middle positions of the top and bottom of the material piece, and positioning holes are provided on the positioning gaskets; inner sleeve positioning columns that are compatible with the above-mentioned positioning holes are provided on the inner sleeve upper cover or the inner sleeve lower cover on the inner side of the positioning holes; and outer sleeve avoidance grooves are provided on the inner sides of the outer sleeve upper cover and the outer sleeve lower cover outside the inner sleeve positioning columns.

[0015] As a further improvement of the utility model, inner sleeve first guide holes are provided on the left and right sides of the inner sleeve upper cover and the inner sleeve lower cover, outer sleeve guide rods distributed along the left and right directions are provided between the two corresponding inner sleeve first guide holes, and outer sleeve guide holes are provided in the middle of the outer sleeve upper cover and the outer sleeve lower cover, and the outer sleeve guide holes are connected to the inner outer sleeve guide rods.

[0016] As a further improvement of the utility model, a plurality of inner sleeve slide grooves are arranged on the left and right sides of the bottom of the inner sleeve lower cover, an outer sleeve slide track distributed along the left and right directions is installed at the bottom between the two corresponding inner sleeve slide grooves, and an outer sleeve slide groove is arranged on the outer sleeve lower cover outside the inner sleeve slide groove, and the outer sleeve slide groove moves along the left and right directions on the outer sleeve slide track below.

[0017] As a further improvement of the utility model, inner sleeve second guide holes are provided on the front and rear sides of the inner sleeve upper cover and the inner sleeve lower cover, a pressure strip guide rod distributed along the front and rear direction is provided between the two corresponding inner sleeve second guide holes, and a pressure strip guide hole is provided in the middle of the pressure strip upper cover and the pressure strip lower cover, and the pressure strip guide hole is connected to the inner pressure strip guide rod.

[0018] As a further improvement of the utility model, inner sleeve weld avoidance grooves are provided on both the front and rear sides of the inner sleeve body, and a bead weld avoidance groove is provided on the bead body outside the inner sleeve weld avoidance groove.

[0019] As a further improvement of the utility model, a plurality of pressure strip locking bolts are evenly distributed on the pressure strip body on the left and right sides of the pressure strip weld avoidance groove.

[0020] By means of the above solution, the utility model has at least the following advantages:

[0021] The tooling structure of the utility model has great strength, and can not only realize molding, but also realize welding positioning and post-welding shaping, and is a multi-purpose tooling.

[0022] The utility model can save welding tools and shaping tools, thereby saving manufacturing costs.

[0023] The utility model can reduce the material and processing costs of the outer wall of the nozzle and shorten the cycle.

[0024] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the nozzle of the utility model before processing;

[0027] Figure 2 It is a schematic diagram of the structure of the nozzle of the utility model after processing;

[0028] Figure 3 It is a structural schematic diagram of the utility model in the first working state;

[0029] Figure 4 It is a structural schematic diagram of the utility model in the second working state;

[0030] Figure 5 yes Figure 3 A schematic diagram of the structure of one side of the middle cover and outer jacket;

[0031] Figure 6 yes Figure 3 A schematic diagram of the structure of the other side of the middle cover jacket;

[0032] Figure 7 yes Figure 3 A schematic diagram of the structure of the middle fitting inner sleeve;

[0033] Figure 8 yes Figure 3 Schematic diagram of the structure of the welded pressure strip.

[0034] The meanings of the various reference numerals in the figures are as follows.

[0035] Sheet 1, positioning gasket 2, positioning hole 3, nozzle 4, covering outer sleeve 5, fitting inner sleeve 6, welding pressure strip 7, outer sleeve guide rod 8, outer sleeve slide 9, pressure strip guide rod 10;

[0036] A jacket body 51, a jacket upper cover 52, a jacket lower cover 53, a jacket guide hole 54, a jacket slide groove 55, and a jacket avoidance groove 56;

[0037] Inner sleeve body 61, inner sleeve upper cover 62, inner sleeve lower cover 63, inner sleeve first guide hole 64, inner sleeve positioning column 65, inner sleeve second guide hole 66, inner sleeve sliding groove 67, inner sleeve welding seam avoidance groove 68;

[0038] The bead body 71 , the bead upper cover 72 , the bead lower cover 73 , the bead guide hole 74 , the bead weld avoidance groove 75 , and the bead locking bolt 76 . DETAILED DESCRIPTION

[0039] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0041] Example

[0042] like Figures 1 to 8 As shown,

[0043] A tool for manufacturing the outer wall of a diffusion nozzle comprises a nozzle 4 and a fitting inner sleeve 6, a covering outer sleeve 5 is arranged on both the left and right sides of the fitting inner sleeve 6, and welding strips 7 are arranged on both the front and rear sides of the fitting inner sleeve 6.

[0044] 1. The covering coat 5 comprises a coat body 51 , a coat upper cover 52 is arranged on the top of the coat body 51 , and a coat lower cover 53 is arranged on the bottom of the coat body 51 .

[0045] 2. The fitting inner sleeve 6 comprises an inner sleeve body 61 , an inner sleeve upper cover 62 is arranged on the top of the inner sleeve body 61 , and an inner sleeve lower cover 63 is arranged on the bottom of the inner sleeve body 61 .

[0046] 3. The welding pressure strip 7 includes a pressure strip body 71 , a pressure strip upper cover 72 is arranged on the top of the pressure strip body 71 , and a pressure strip lower cover 73 is arranged on the bottom of the pressure strip body 71 .

[0047] The inner sleeve body 61 is provided with inner sleeve weld avoidance grooves 68 on both the front and rear sides, and a bead weld avoidance groove 75 is provided on the bead body 71 outside the inner sleeve weld avoidance groove 68. A plurality of bead locking bolts 76 are evenly distributed on the bead body 71 on both sides of the bead weld avoidance groove 75.

[0048] 4. The nozzle 4 is composed of two sheets 1, which are respectively attached to the left and right sides of the inner sleeve body 61, and then the outer sleeve body 51 covers the outer side of the left or right side of the sheet 1, and then the pressure strip body 71 covers the outer side of the front or rear side of the sheet 1.

[0049] The outer sleeve upper cover 52 covers the outer side of the left or right side of the inner sleeve upper cover 62, the outer sleeve lower cover 53 covers the outer side of the left or right side of the inner sleeve lower cover 63, the pressure strip upper cover 72 covers the outer side of the front or rear side of the inner sleeve upper cover 62, and the pressure strip lower cover 73 covers the outer side of the front or rear side of the inner sleeve lower cover 63.

[0050] 5. Positioning and installation structure of sheet 1:

[0051] Positioning gaskets 2 are provided at the middle positions of the top and bottom of the material piece 1, and positioning holes 3 are provided on the positioning gaskets 2; inner sleeve positioning columns 65 matched with the above-mentioned positioning holes 3 are provided on the inner sleeve upper cover 62 or the inner sleeve lower cover 63 inside the positioning holes 3; outer sleeve avoidance grooves 56 are provided on the inner sides of the outer sleeve upper cover 52 and the outer sleeve lower cover 53 outside the inner sleeve positioning columns 65.

[0052] 6. Guide structure of covering jacket 5:

[0053] Inner sleeve first guide holes 64 are provided on the left and right sides of the inner sleeve upper cover 62 and the inner sleeve lower cover 63, and outer sleeve guide rods 8 distributed along the left and right directions are provided between the two corresponding inner sleeve first guide holes 64. Outer sleeve guide holes 54 are provided in the middle of the outer sleeve upper cover 52 and the outer sleeve lower cover 53, and the outer sleeve guide holes 54 are connected to the inner outer sleeve guide rods 8.

[0054] A plurality of inner sleeve slide grooves 67 are provided on both the left and right sides of the bottom of the inner sleeve lower cover 63, and an outer sleeve slideway 9 distributed along the left and right directions is installed at the bottom between two corresponding inner sleeve slide grooves 67, and an outer sleeve slide groove 55 is provided on the outer sleeve lower cover 53 outside the inner sleeve slide groove 67, and the outer sleeve slide groove 55 moves along the left and right directions on the outer sleeve slideway 9 below.

[0055] 7. Guide structure of welding pressure strip 7:

[0056] Inner sleeve second guide holes 66 are provided on the front and rear sides of the inner sleeve upper cover 62 and the inner sleeve lower cover 63, and a molding guide rod 10 distributed along the front and rear direction is provided between the two corresponding inner sleeve second guide holes 66, and a molding guide hole 74 is provided in the middle of the molding upper cover 72 and the molding lower cover 73, and the molding guide hole 74 is connected to the inner molding guide rod 10.

[0057] The outer wall of the nozzle is generally made of titanium alloy and high-temperature alloy. The cost of machining with forgings is relatively high. Therefore, the use of a petal forming method can save costs. The petal manufacturing method requires welding, which causes deformation after welding and involves shape correction. Therefore, after a reasonable tooling structure is given, the solution of the utility model is feasible, providing a new idea and method for the manufacture of outer wall nozzles.

[0058] The forming + welding + shaping scheme can perfectly achieve gapless fit between the inner and outer walls. The inner and outer walls of the gas pressure diffusion welding nozzle are welded to the thinnest possible state, thus achieving bidirectional pressurization.

[0059] This tooling scheme has two main purposes: 1. No thinning during the forming process; 2. It is suitable for the outer wall manufacturing of titanium alloy, high temperature alloy and heat-resistant stainless steel.

[0060] The working principle of this utility model is briefly described as follows:

[0061] 1. The nozzle 4 is composed of two left and right sheets 1, and positioning pads 2 are provided on both sheets 1 for positioning processing to prevent deviation during the molding process.

[0062] 2. The covering outer sleeves 5 on the left and right sides are respectively covered on the fitting inner sleeve 6 on the inner side, thereby achieving molding.

[0063] 3. Then, the covering outer sleeve 5 is locked on the inner fitting inner sleeve 6 by means of a plurality of nuts installed on the guide rods.

[0064] 4. Pre-treatment of welding: pickling, scraping and acetone cleaning.

[0065] 5. The welding strips 7 on the front and rear sides are respectively covered on the inner fitting inner sleeve 6, and the strip locking bolts 76 adjust the surface height of the butt joint, and then the welding strips 7 are locked on the inner fitting inner sleeve 6 through multiple nuts installed on the guide rods.

[0066] 6. For electron beam welding, the three-claw chuck is formed into the large end of the inner cone, the weld is leveled, and electron beam welding is completed.

[0067] 7. X-ray flaw detection and electron beam welding comply with GJB1718A-2005 welding quality level I.

[0068] 8. Treatment of excess height on the front and back of the weld.

[0069] 9. Apply anti-solder on the inner and outer surfaces of the workpiece, and reassemble it on the tooling after drying.

[0070] 10. Vacuum shaping.

[0071] 11. Shape inspection after finalization.

[0072] 12. After shaping, treat the inner and outer surfaces to remove micro-oxidation or surface deposits.

[0073] The tooling of the utility model has multiple uses, firstly, it is a forming tooling, secondly, it is a welding tooling, and thirdly, it is a shaping tooling. It can be applied to the forming and welding of 3-6mm high-temperature alloys and titanium alloys. In addition, it is also applicable to the curved surface of the outer wall of the nozzle.

[0074] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0075] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A tool for manufacturing the outer wall of a diffusion nozzle, characterized in that: It comprises a nozzle (4) and a fitting inner sleeve (6), a covering outer sleeve (5) is arranged on both the left and right sides of the fitting inner sleeve (6), and a welding pressure strip (7) is arranged on both the front and rear sides of the fitting inner sleeve (6); The covering jacket (5) comprises a jacket body (51), a jacket upper cover (52) is arranged on the top of the jacket body (51), and a jacket lower cover (53) is arranged on the bottom of the jacket body (51); The fitting inner sleeve (6) comprises an inner sleeve body (61), an inner sleeve upper cover (62) is arranged on the top of the inner sleeve body (61), and an inner sleeve lower cover (63) is arranged on the bottom of the inner sleeve body (61); The welding pressure strip (7) comprises a pressure strip body (71), a pressure strip upper cover (72) is arranged on the top of the pressure strip body (71), and a pressure strip lower cover (73) is arranged on the bottom of the pressure strip body (71); The nozzle (4) is composed of two pieces (1), the two pieces (1) are respectively attached to the left and right sides of the inner sleeve body (61), and then the outer sleeve body (51) covers the outer side of the left or right side of the piece (1), and then the pressure strip body (71) covers the outer side of the front or rear side of the piece (1); The outer sleeve upper cover (52) covers the outer side of the left side or right side of the inner sleeve upper cover (62), the outer sleeve lower cover (53) covers the outer side of the left side or right side of the inner sleeve lower cover (63), the pressure strip upper cover (72) covers the outer side of the front side or rear side of the inner sleeve upper cover (62), and the pressure strip lower cover (73) covers the outer side of the front side or rear side of the inner sleeve lower cover (63).

2. A diffuser nozzle outer wall manufacturing tool as claimed in claim 1, characterized in that: Positioning pads (2) are provided at the middle positions of the top and bottom of the material sheet (1), and positioning holes (3) are provided on the positioning pads (2); inner sleeve positioning columns (65) matching the positioning holes (3) are provided on the inner sleeve upper cover (62) or the inner sleeve lower cover (63) inside the positioning holes (3); and outer sleeve avoidance grooves (56) are provided on the inner sides of the outer sleeve upper cover (52) and the outer sleeve lower cover (53) outside the inner sleeve positioning columns (65).

3. A diffuser nozzle outer wall manufacturing tool as claimed in claim 1, characterized in that: Inner sleeve first guide holes (64) are provided on both left and right sides of the inner sleeve upper cover (62) and the inner sleeve lower cover (63); outer sleeve guide rods (8) distributed along the left and right directions are provided between the two corresponding inner sleeve first guide holes (64); outer sleeve guide holes (54) are provided in the middle of the outer sleeve upper cover (52) and the outer sleeve lower cover (53); and the outer sleeve guide holes (54) are connected to the inner outer sleeve guide rods (8).

4. A diffuser nozzle outer wall manufacturing tool as claimed in claim 1, characterized in that: A plurality of inner sleeve slide grooves (67) are provided on both left and right sides of the bottom of the inner sleeve lower cover (63); an outer sleeve slideway (9) distributed along the left and right directions is installed at the bottom between two corresponding inner sleeve slide grooves (67); an outer sleeve slide groove (55) is provided on the outer sleeve lower cover (53) outside the inner sleeve slide groove (67); and the outer sleeve slide groove (55) moves along the left and right directions on the outer sleeve slideway (9) below.

5. A diffuser nozzle outer wall manufacturing tool as claimed in claim 1, characterized in that: Inner sleeve second guide holes (66) are provided on both the front and rear sides of the inner sleeve upper cover (62) and the inner sleeve lower cover (63); a pressure strip guide rod (10) distributed along the front and rear direction is provided between the two corresponding inner sleeve second guide holes (66); and pressure strip guide holes (74) are provided in the middle of the pressure strip upper cover (72) and the pressure strip lower cover (73); the pressure strip guide holes (74) are connected to the inner pressure strip guide rod (10).

6. A diffuser nozzle outer wall manufacturing tool as claimed in claim 1, characterized in that: Inner sleeve weld avoidance grooves (68) are provided on both the front and rear sides of the inner sleeve body (61), and a bead weld avoidance groove (75) is provided on the bead body (71) outside the inner sleeve weld avoidance groove (68).

7. A diffuser nozzle outer wall manufacturing tool as claimed in claim 6, characterized in that: A plurality of beading strip locking bolts (76) are evenly distributed on the beading strip body (71) on the left and right sides of the beading strip weld avoidance groove (75).

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