Wave spring aging tool for high-precision, long-service-life and high-efficiency aero-engine

Abstract

The invention provides a high-precision, long-service-life and high-efficiency waveform spring aging tool for an aero-engine. The high-precision, long-service-life and high-efficiency waveform spring aging tool comprises a bottom plate, a large shaft, a pressing plate, a large opening gasket, a small shaft, a small opening gasket, a small shouldered hexagon nut and a large shouldered hexagon nut. Wherein the bottom plate is of a hollow tubular structure, six holes are evenly distributed in the circumferential direction, one end of the bottom plate is a plane, and the other end of the bottom plate is consistent with the wavy face of the wavy spring; the pressing plate is of a hollow tubular structure corresponding to the bottom plate, six holes are evenly distributed in the circumferential direction, one end of the bottom plate is a plane, and the other end of the bottom plate is consistent with the wavy face of the wavy spring. The wave-shaped surfaces of the bottom plate and the pressing plate are oppositely arranged and used for clamping the wave-shaped spring; the large shaft, the small shaft, the large opening gasket, the small opening gasket, the small shouldered hexagon nut and the large shouldered hexagon nut are made of 1Cr18Ni9Ti. The tool has the advantages that the size precision of parts is improved and the service life of the tool is prolonged while quick assembly and disassembly are met, and the problem that the tool is scrapped due to thread adhesion is effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of metal heat treatment, and in particular to a high-precision, high-life, and high-efficiency wave spring aging tool for an aero-engine. Background Art

[0002] Wave springs have the characteristics of small space and uniform force, which are very suitable for use in conditions with limited space, so they are widely used in the field of aircraft engines. However, due to the complex surface of wave springs and the need to undergo multiple compression processes during use, the technical documents have high requirements for their dimensional accuracy and mechanical properties. Therefore, they need to be subjected to aging heat treatment after initial forming in order to achieve the purpose of finalization.

[0003] For the aging heat treatment of wave springs for aircraft engines, there are currently the following main problems:

[0004] (1) Poor dimensional accuracy of parts

[0005] At present, the aging heat treatment tooling for wave springs can be roughly divided into two types. One is single-piece part clamping, where the upper and lower modules of the tooling are connected by a screw and a nut. Due to the different material properties of this type of tooling during use, for wave springs made of certain alloys with good elasticity, the edge of the part has a poor fit with the tooling after aging, and even manual correction is required to meet the dimensional requirements in the technical documents. The second type is single-time multi-piece clamping. This type of tooling cannot ensure that multiple pieces of parts fit each other completely during installation, so it is not suitable for the manufacture of wave springs for aircraft engines.

[0006] (2) Low service life and loading and unloading efficiency of time-consuming tooling

[0007] The locking method of traditional aging tooling is threaded connection. After repeated use, the threads are deformed due to thermal expansion and contraction. During disassembly, the threads and nuts stick together. In serious cases, the entire tooling will be scrapped. In addition, the threads of this type of tooling are usually long, and loading and unloading are also time-consuming. Summary of the invention

[0008] The purpose of the present invention is to solve the problems existing in the background technology. The present invention proposes a high-precision, high-life, and high-efficiency wave spring aging tool for aircraft engines. The tool is considered from three aspects: part dimensional accuracy, tool life, and loading and unloading efficiency. The main structure includes five parts: base plate, shaft, pressure plate, open washer, and shouldered hexagonal nut. By circumferentially distributing the bolts of the pressure plate and base plate and using open washers, the dimensional accuracy of the parts and the service life of the tool are improved while meeting the requirements of fast loading and unloading.

[0009] The present invention provides a high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines, which is characterized in that the high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines comprises: a base plate 1, a large shaft 2, a pressure plate 3, a large open washer 4 with a specification of 24-60, three small shafts 5, three small open washers 6 with a specification of 16-40, three small shouldered hexagonal nuts 7 with a specification of M16, and a large shouldered hexagonal nut 8 with a specification of M24;

[0010] Wherein: the bottom plate 1 is a hollow tubular structure, with 6 holes evenly distributed along the circumference, one end of the bottom plate 1 is a plane, and the other end of the bottom plate 1 is consistent with the wave surface of the wave spring; the pressure plate 3 is a hollow tubular structure corresponding to the bottom plate 1, with 6 holes evenly distributed along the circumference, one end of the bottom plate 3 is a plane, and the other end of the bottom plate 3 is consistent with the wave surface of the wave spring; the wave surfaces of the bottom plate 1 and the pressure plate 3 are placed opposite to each other for clamping the wave spring;

[0011] The large shaft 2 and the small shaft 5 are both two-stage boss structures, the first-stage boss is provided with threads, and the diameter of the second-stage boss is larger than the first-stage boss;

[0012] The bottom plate 1 passes through the second-stage bosses of the large shaft 2 and the small shaft 5, and the pressure plate 3 passes through the first-stage bosses of the large shaft 2 and the small shaft 5; the large open washer 4 and the small open washer 6 pass through the first-stage bosses of the large shaft 2 and the small shaft 5 respectively and are placed on the plane end of the pressure plate 3, and the large open washer 4 contacts the large shaft 2, and the small open washer 6 contacts the small shaft 5; the small open washer 6, the large open washer 4, the pressure plate 3 and the bottom plate 1 are clamped by tightening the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 to realize the clamping of the wave spring;

[0013] The inner ring size of the split washer is larger than the shoulder size of the shouldered hexagon nut.

[0014] There is one wave spring placed between the base plate 1 and the pressure plate 3 .

[0015] The base plate 1 and the pressure plate 3 are made of GH3044 high temperature alloy.

[0016] The material of the large shaft 2, the small shaft 5, the large open washer 4, the small open washer 6, the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 is 1Cr18Ni9Ti.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The high-precision, high-life, and high-efficiency wave spring aging tool for aircraft engines described in the present invention distributes the bolts of the pressure plate and the base plate circumferentially and uses open washers. While meeting the requirements of fast loading and unloading, it improves the dimensional accuracy of the parts and the service life of the tooling, and effectively prevents the tooling from being scrapped due to thread adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 A schematic diagram of the structure of the aging tooling for the wave spring provided by the present invention;

[0021] Base plate 1, large shaft 2, pressure plate 3, large open washer 4 (specification 24-60), small shaft 5 (3 pieces), small open washer 6 (3 pieces, specification 16-40), small shouldered hexagonal nut 7 (3 pieces, specification M16), large shouldered hexagonal nut 8 (specification M24))

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 for Figure 2 AA section view;

[0024] Figure 4 for Figure 2 BB cross-section diagram. DETAILED DESCRIPTION

[0025] The present invention will be further explained below in conjunction with specific implementation plans, but the present invention is not limited thereto. The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] A high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines, comprising: a base plate 1, a large shaft 2, a pressure plate 3, a large open washer 4 with a specification of 24-60, 3 small shafts 5, 3 small open washers 6 with a specification of 16-40, 3 small shouldered hexagonal nuts 7 with a specification of M16, and a large shouldered hexagonal nut 8 with a specification of M24;

[0027] Wherein: the bottom plate 1 is a hollow tubular structure, with 6 holes evenly distributed along the circumference, one end of the bottom plate 1 is a plane, and the other end of the bottom plate 1 is consistent with the wave surface of the wave spring; the pressure plate 3 is a hollow tubular structure corresponding to the bottom plate 1, with 6 holes evenly distributed along the circumference, one end of the bottom plate 3 is a plane, and the other end of the bottom plate 3 is consistent with the wave surface of the wave spring; the wave surfaces of the bottom plate 1 and the pressure plate 3 are placed opposite to each other for clamping the wave spring;

[0028] The large shaft 2 and the small shaft 5 are both two-stage boss structures, the first-stage boss is provided with threads, and the diameter of the second-stage boss is larger than the first-stage boss;

[0029] The bottom plate 1 passes through the second-stage bosses of the large shaft 2 and the small shaft 5, and the pressure plate 3 passes through the first-stage bosses of the large shaft 2 and the small shaft 5; the large open washer 4 and the small open washer 6 pass through the first-stage bosses of the large shaft 2 and the small shaft 5 respectively and are placed on the plane end of the pressure plate 3, and the large open washer 4 contacts the large shaft 2, and the small open washer 6 contacts the small shaft 5; the small open washer 6, the large open washer 4, the pressure plate 3 and the bottom plate 1 are clamped by tightening the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 to realize the clamping of the wave spring;

[0030] The inner ring size of the split washer is larger than the shoulder size of the shouldered hexagon nut.

[0031] There is one wave spring placed between the base plate 1 and the pressure plate 3 .

[0032] The base plate 1 and the pressure plate 3 are made of GH3044 high temperature alloy.

[0033] The material of the large shaft 2, the small shaft 5, the large open washer 4, the small open washer 6, the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 is 1Cr18Ni9Ti.

[0034] like Figure 1 to Figure 4 As shown, when using this tooling to perform aging heat treatment on the wave spring, first, the three small shafts 5 are evenly distributed at an angle of 120° along the circumference of the base plate 1, and then the base plate 1 is passed through the second-level bosses of the large shaft 2 and the three small shafts 5, and then the wave spring is placed on the wave surface of the base plate 1, and it is ensured that the profile of the wave spring is in contact with the wave surface on the base plate 1. Then the pressing plate 3 is passed through the first-level bosses of the large shaft 2 and the three small shafts 5. Then the large open washer 4 and the three small open washers 6 are placed on the upper plane of the pressing plate 3, and they are in contact with the large shaft 2 and the three small shafts 5 respectively. Finally, the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 are tightened to achieve the clamping of the tooling to complete the aging heat treatment and ensure the dimensional accuracy of the parts.

[0035] After the aging heat treatment, it is only necessary to slightly loosen the small shouldered hexagonal nut 7 and the large shouldered hexagonal nut 8 and remove the open washer, then the pressure plate 3 can be removed and the preparation of the wave spring can be quickly completed.

[0036] Matters not covered by the present invention are known technologies.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines, characterized by: The high-precision, high-life, and high-efficiency wave spring aging tool for aircraft engines comprises: a base plate (1), a large shaft (2), a pressure plate (3), a large open washer (4) with a specification of 24-60, three small shafts (5), three small open washers (6) with a specification of 16-40, three small shouldered hexagonal nuts (7) with a specification of M16, and a large shouldered hexagonal nut (8) with a specification of M24; Wherein: the bottom plate (1) is a hollow tubular structure, with 6 holes evenly distributed along the circumference, one end of the bottom plate (1) is a plane, and the other end of the bottom plate (1) is consistent with the wave surface of the wave spring; the pressure plate (3) is a hollow tubular structure corresponding to the bottom plate (1), with 6 holes evenly distributed along the circumference, one end of the bottom plate (3) is a plane, and the other end of the bottom plate (3) is consistent with the wave surface of the wave spring; the wave surfaces of the bottom plate (1) and the pressure plate (3) are placed opposite to each other, and are used for clamping the wave spring; The large shaft (2) and the small shaft (5) are both two-stage boss structures, the first-stage boss is provided with threads, and the diameter of the second-stage boss is larger than that of the first-stage boss; The bottom plate (1) passes through the second-stage bosses of the large shaft (2) and the small shaft (5), and the pressure plate (3) passes through the first-stage bosses of the large shaft (2) and the small shaft (5); the large open washer (4) and the small open washer (6) respectively pass through the first-stage bosses of the large shaft (2) and the small shaft (5) and are placed on the plane end of the pressure plate (3), and the large open washer (4) contacts the large shaft (2), and the small open washer (6) contacts the small shaft (5); the small open washer (6), the large open washer (4), the pressure plate (3) and the bottom plate (1) are tightened to clamp the wave spring.

2. The high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines according to claim 1 is characterized by: The inner ring dimensions of the large-opening washer (4) and the small-opening washer (6) are both larger than the shoulder dimensions of the large-shoulder hexagonal nut (8) and the small-shoulder hexagonal nut (7).

3. The high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines according to claim 1 is characterized by: There is one wave spring placed between the bottom plate (1) and the pressure plate (3).

4. The high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines according to claim 1 is characterized by: The base plate (1) and the pressure plate (3) are made of GH3044 high-temperature alloy.

5. The high-precision, high-life, high-efficiency wave spring aging tool for aircraft engines according to claim 1 is characterized by: The material of the large shaft (2), the small shaft (5), the large open washer (4), the small open washer (6), the small shouldered hexagonal nut (7) and the large shouldered hexagonal nut (8) is 1Cr18Ni9Ti.

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