Tool for controlling heat treatment deformation of engine fuel manifold

Abstract

The utility model discloses a tool for controlling heat treatment deformation of a fuel manifold of an engine, which comprises a mounting plate, a plurality of limiting holes, a plurality of clamping plates, a plurality of clamping plates, a plurality of clamping plates, a plurality of clamping plates and a plurality of clamping plates, the limiting holes are circumferentially distributed, and positioning pins are detachably connected in the limiting holes; the pressing plate is arranged on a T-shaped screw shaft above the mounting plate, the T-shaped screw shaft is detachably connected to the mounting plate and the pressing plate, and a fastener is detachably connected to the top end of the T-shaped screw shaft. The engine fuel manifold has the following beneficial effects that the engine fuel manifold is prevented from being twisted, dislocated, warped and other deformations in the destressing annealing heat treatment process; manufacturing cost is low, control is reliable, size is stable, assembling and disassembling are convenient, and manufacturing is easy; certain rigidity and stability are achieved, and the tool is not prone to deformation after repeated high-temperature heating.

Description

Technical Field

[0001] The utility model belongs to the field of heat treatment of metal parts, and in particular relates to a tool for controlling the heat treatment deformation of an engine fuel main pipe. Background Art

[0002] The engine fuel manifold is a ring-shaped assembly consisting of multiple nozzles connected by two rows of pipes. The nozzle housing of the fuel manifold suffers from oil leakage and the threads connecting to the sleeve often suffer from bonding damage due to high temperatures, which affects flight safety. The nozzle housing needs to be expanded and repaired, and high-frequency induction brazing is proposed for repair. After the welding repair, the fuel manifold needs to undergo a post-weld protective atmosphere stress relief annealing heat treatment (heat treatment temperature is approximately 660°C) to reduce or eliminate residual welding stress (stabilize dimensions), reduce the diffusible hydrogen content in the weld, and improve structural stability. Prior art fuel manifold fixtures are mostly used for brazing, and there are no fixtures for stress annealing heat treatment. Moreover, the structure is complex to assemble and disassemble. For example, patent application number 201711146864.4 discloses a fuel manifold brazing fixture used to weld the nozzle to the fuel pipe. During use, the locking nut is tightened to force the pressure block to press the nozzle against the support. Multiple nozzles require multiple assembly and disassembly, which is complicated. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages to be described hereinafter.

[0004] In order to achieve these purposes and other advantages according to the present invention, a tool for controlling the deformation amount of the engine fuel manifold during heat treatment is provided, comprising:

[0005] A mounting plate is provided with a plurality of limiting holes, the limiting holes being distributed in a circumference, and positioning pins are detachably connected to the limiting holes;

[0006] a pressing plate, which is arranged above the mounting plate;

[0007] A T-shaped screw shaft is detachably connected to the mounting plate and the pressing plate, and a fastener is detachably connected to the top end of the T-shaped screw shaft.

[0008] Preferably, a screw shaft hole I is further provided at the center of the mounting plate, and a screw shaft hole II is provided at the center of the pressure plate, the screw shaft hole I and the screw shaft hole II are coaxial, the rod of the T-shaped screw shaft is passed through the screw shaft hole I and the screw shaft hole II, the fastener is detachably connected to the top end of the T-shaped screw shaft through a thread, the bottom surface of the fastener abuts against the upper surface of the pressure plate, and the bottom of the T-shaped screw shaft is detachably connected to the mounting plate through a hexagon socket bolt.

[0009] Preferably, the mounting plate is further provided with a plurality of fan-shaped holes I, and the fan-shaped holes I are distributed around the screw shaft hole I.

[0010] Preferably, the pressure plate is further provided with a plurality of fan-shaped holes II, and the fan-shaped holes II are distributed around the screw shaft hole II.

[0011] Preferably, the fastener comprises:

[0012] A truncated cone-shaped nut with an oblique hole;

[0013] A plate rod is detachably connected in the inclined hole.

[0014] Preferably, the positioning pin is connected to the limiting hole by a thread, and the positioning pin is installed from bottom to top below the mounting plate.

[0015] Preferably, a support foot is detachably connected to the lower end of the mounting plate.

[0016] The utility model has at least the following beneficial effects: the nozzle of the fuel main pipe is positioned and limited by the locating pin in the limiting hole, and the fuel main pipe is clamped by the pressing plate and the mounting plate, thereby preventing the engine fuel main pipe from being twisted, dislocated, warped or other deformations during the stress annealing heat treatment process; the production cost is low, the control is reliable, the size is stable, the assembly and disassembly is convenient, and the manufacturing is simple; the tooling is not easily deformed after repeated high-temperature heating.

[0017] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a tool for controlling the heat treatment deformation of an engine fuel manifold according to the present invention;

[0019] Figure 2 This is a schematic diagram of the mounting plate structure of a tool for controlling the heat treatment deformation of an engine fuel manifold according to the present invention;

[0020] Figure 3 This is a schematic diagram of the pressure plate structure of a tool for controlling the heat treatment deformation of an engine fuel manifold according to the present invention;

[0021] Figure 4 This is a schematic structural diagram of a T-shaped screw shaft of a tool for controlling the heat treatment deformation of an engine fuel manifold according to the present invention;

[0022] Figure 5 This is a cross-sectional view of a tool for controlling the heat treatment deformation of an engine fuel manifold according to the present invention;

[0023] Figure 6 The utility model is a structural schematic diagram of a nut of a tool for controlling the heat treatment deformation of an engine fuel main pipe. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0025] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that in the description of this utility model, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings. These are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, in the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] As shown in the figure, a tool for controlling the heat treatment deformation of an engine fuel manifold includes:

[0030] The mounting plate 1 is provided with a plurality of limiting holes 11, which are distributed in a circumference, and positioning pins 12 are detachably connected in the limiting holes 11;

[0031] A pressing plate 2, which is arranged above the mounting plate 1;

[0032] The T-shaped screw shaft 3 is detachably connected to the mounting plate 1 and the pressing plate 2 , and the top end of the T-shaped screw shaft 3 is detachably connected to a fastener.

[0033] Working principle: Assemble the engine fuel manifold that needs to undergo stress annealing heat treatment on the mounting plate 1. During assembly, the locating pin 12 in the limiting hole 11 is used for assembly positioning. The nozzle of the fuel manifold is inserted into the corresponding limiting hole 11 through the locating pin 12. Then, the pressure plate 2 is placed on the fuel manifold. The T-shaped screw shaft 3 is passed through the mounting plate 1 and the pressure plate 2. The fastener at the top of the T-shaped screw shaft 3 is tightened to fix the fuel manifold. The assembly of the entire tooling is then completed. In addition to assembly positioning, the locating pin 12 also serves as a limiter to prevent deformation such as twisting and misalignment during the heat treatment of the nozzle. The mounting plate 1 and the pressure plate 2 together fix the fuel manifold in the tooling, and then tighten it through the T-shaped screw shaft 3 to ensure that the tooling can fully contact and fix the fuel manifold, ensure the uniformity and consistency of the heat treatment, and limit deformation such as twisting and warping of the fuel manifold as a whole.

[0034] In the above technical solution, a screw hole I13 is further defined in the center of the mounting plate 1, and a screw hole II21 is defined in the center of the pressure plate. The screw hole I13 and the screw hole II21 are coaxial. The rod of the T-shaped screw shaft 3 is inserted into the screw hole I13 and the screw hole II21. The fastener is detachably connected to the top of the T-shaped screw shaft 3 via a thread. The bottom surface of the fastener abuts the upper surface of the pressure plate 2. The bottom of the T-shaped screw shaft 3 is detachably connected to the mounting plate 1 via a hexagon socket head bolt 33. The T-shaped screw shaft 3 and the fastener are used to fasten the mounting plate 1 and the pressure plate 2.

[0035] In the above technical solution, the mounting plate 1 is further provided with a plurality of fan-shaped holes I 14, which are arranged around the screw shaft hole I 13. The hollow design of the plurality of fan-shaped holes I 14 helps reduce the total weight of the entire tooling, facilitates loading and unloading during use, and allows the heating atmosphere to circulate, ensuring uniform heating.

[0036] In the above technical solution, the pressing plate 2 is further provided with a plurality of fan-shaped holes II 22, which are arranged around the screw shaft hole II 21. The hollow design of the plurality of fan-shaped holes II 22 helps reduce the total weight of the entire tooling, facilitates loading and unloading during use, and allows the heating atmosphere to circulate, ensuring uniform heating.

[0037] In the above technical solution, the fastener includes:

[0038] A truncated cone-shaped nut 31 having an oblique hole 311 formed therein;

[0039] The plate rod 32 is detachably connected to the inclined hole 311. The plate rod 32 is used to tighten the nut 31 to fasten the entire tooling.

[0040] In the above technical solution, the positioning pin 12 is threadedly connected to the limiting hole 11. The positioning pin 12 is installed from the bottom to the top of the mounting plate 1. The positioning pin 12 in the limiting hole 11 is used for assembly positioning. In addition to assembly positioning, it also serves as a limiter to prevent deformation such as twisting and misalignment during the nozzle heat treatment.

[0041] In the above technical solution, the lower end of the mounting plate 1 is detachably connected to a support leg 4, which allows the entire tooling to be stably placed in the tempering basket, which is beneficial to atmosphere circulation and uniform heating.

[0042] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A tool for controlling the heat treatment deformation of an engine fuel manifold, characterized in that: include: A mounting plate, on which a plurality of limiting holes are formed, the limiting holes are distributed in a circumference, and positioning pins are detachably connected to the limiting holes; A pressure plate, which is arranged above the mounting plate; The T-shaped screw shaft is detachably connected to the mounting plate and the pressing plate, and the top end of the T-shaped screw shaft is detachably connected with a fastener.

2. The tooling for controlling the heat treatment deformation of the engine fuel manifold according to claim 1, characterized in that: A screw shaft hole I is also provided at the center of the mounting plate, and a screw shaft hole II is provided at the center of the pressure plate. The screw shaft hole I and the screw shaft hole II are coaxial, and the rod of the T-shaped screw shaft is inserted into the screw shaft hole I and the screw shaft hole II. The fastener is detachably connected to the top end of the T-shaped screw shaft, and the bottom surface of the fastener abuts against the upper surface of the pressure plate. The bottom of the T-shaped screw shaft is detachably connected to the mounting plate through a hexagon socket bolt.

3. The tooling for controlling the heat treatment deformation of the engine fuel manifold according to claim 2, characterized in that: The mounting plate is also provided with a plurality of fan-shaped holes I, which are distributed around the screw shaft hole I.

4. The tooling for controlling the heat treatment deformation of an engine fuel manifold according to claim 2, characterized in that: The pressing plate is also provided with a plurality of fan-shaped holes II, and the fan-shaped holes II are distributed around the screw shaft hole II.

5. The tooling for controlling the heat treatment deformation of an engine fuel manifold according to claim 1, characterized in that: The fastener comprises: A truncated cone-shaped nut with an oblique hole; A plate rod is detachably connected in the inclined hole.

6. The tooling for controlling the heat treatment deformation of an engine fuel manifold according to claim 1, characterized in that: The positioning pin is connected to the limiting hole through a thread, and the positioning pin is installed from bottom to top below the mounting plate.

7. The tooling for controlling the heat treatment deformation of an engine fuel manifold according to claim 1, characterized in that: The lower end of the mounting plate is detachably connected with a supporting foot.

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