Device for installing centering pin

Abstract

The utility model relates to the technical field of aviation machining, in particular to a device for installing a centering pin. The device comprises a handheld body, a mounting body, a fastening body and a connecting screw, the handheld body is connected with the mounting body; the mounting body main body is of a cylindrical structure, one end is of a plane structure, and the other end is of a threaded structure; a central inner hole of the mounting body is a stepped hole, the large end face of the stepped hole is a threaded structure end face, and the small end is internally provided with internal threads and is a plane structure end face; the connecting screw is inserted from the large end of the stepped hole and extends out from the small end of the stepped hole, and external threads of the connecting screw are matched with internal threads of the small end of the stepped hole to adjust the length of the connecting screw extending out of the small end of the stepped hole. According to the embodiment of the utility model, the centering pin part is convenient and fast to install, a set of complete centering pin installation device is formed, and the repeatability of the installation tool is ensured.

Description

Technical Field

[0001] This utility model relates to the field of aerospace mechanical processing technology, and more particularly to a device for installing centering pins. Background Technology

[0002] In the assembly of aviation hydraulic valve assemblies, numerous centering pins are involved to connect valve sleeves and valve bodies. In existing centering pin assembly processes, a threaded retaining rod is connected to the centering pin thread, and the part is pressed in manually. During use, the threaded retaining rod gradually wears down, requiring frequent adjustments, and eventually necessitates replacement with new tooling after a period of use. Therefore, a more rational design is needed to improve the centering pin installation device. Utility Model Content

[0003] The purpose of this invention is to provide a device for installing centering pins that is highly efficient, reliable, and reusable.

[0004] The technical solution of this utility model is:

[0005] A device for easy installation of a centering pin is provided, the device comprising: a hand-held body, a mounting body, a fastener, and a connecting screw;

[0006] The handheld unit is connected to the mounting unit;

[0007] The main body of the mounting body is a cylindrical structure, with one end being a flat structure and the other end being a threaded structure; the central inner hole of the mounting body is a stepped hole, the large end face of the stepped hole is a threaded structure end face, the small end has an internal thread, and the small end face is a flat structure end face;

[0008] The connecting screw is inserted from the large end of the stepped hole and extends out from the small end of the stepped hole. The external thread of the connecting screw mates with the internal thread of the small end of the stepped hole. Adjust the length of the connecting screw extending out of the small end of the stepped hole.

[0009] The fastening body is a tapered cylindrical rotating structure with a threaded through hole in the center. The threaded through hole is tightened against the protruding connecting screw. After tightening, the connecting screw protruding from the fastening body is used to install the centering pin.

[0010] Furthermore, the handheld body is a non-perfect spherical structure, with one end being a spherical surface and the other end being a spherical cross-section, which connects to the mounting body.

[0011] Furthermore, the centering pin is a rotating part with a threaded structure at one end.

[0012] Furthermore, the outer diameter of the mounting body plane is consistent with the outer diameter of the large end face of the fastener.

[0013] Furthermore, the inner hole at the center of the mounting body and the outer circle of the connecting screw and nut are in clearance fit.

[0014] Furthermore, the outer diameter of the small end of the fastening solid is smaller than the outer diameter of the centering pin part.

[0015] This invention solves the problem of tooling reusability during the installation of center pin parts. The key to its processing lies in designing a suitable connecting screw structure based on the thread size of the center pin parts. During use, the connecting screws cooperate with the thread structure inside the mounting body, allowing the connecting screws to be continuously replenished after wear, thereby improving the reusability of the installation tools and reducing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a device for installing centering pins according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural diagram of the handheld body according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of the mounting body according to an embodiment of the present utility model.

[0020] Figure 4 This is a structural diagram of a solid object according to an embodiment of this utility model.

[0021] Figure 5 This is a structural diagram of the connecting screw according to an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0024] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] refer to Figures 1-5 , Figure 1 The diagram shows a schematic of a device for installing a centering pin according to an embodiment of the present invention. It includes a handheld body 1, which is a non-perfect spherical structure with one end being a spherical surface and the other end being a spherical cross-section, connected to a mounting body via the spherical cross-section; a mounting body 2, whose main body is a cylindrical structure with one end being a planar structure and the other end being a threaded structure, and the center of the mounting body having an internal hole with a threaded structure; a fastening body 3, which is a tapered cylindrical rotating structure with a threaded through hole at its center; and a connecting screw 4, which is a nut with an external thread. Figure 2 , Figure 3 , Figure 4 , Figure 5 The diagram shows the structure of the handheld body, the mounting body, the fastener, and the connecting screw. It includes the internal threaded structure 5 of the handheld body, which is installed in conjunction with the external threaded structure 6 of the mounting body; the connecting screw 9 is installed in conjunction with the internal threaded structure 7 of the mounting body, the internal threaded structure 8 of the fastener, and the threaded structure of the parts.

[0026] Furthermore, the connecting screw has a nut and external thread structure;

[0027] Furthermore, the centering pin is a rotating part with a threaded structure at one end;

[0028] Furthermore, the spherical cross-section end of the handheld body has an internal hole structure, which is connected to the external thread on one side of the mounting body;

[0029] Furthermore, the outer diameter of the mounting body plane is consistent with the outer diameter of the large end face of the fastener;

[0030] Furthermore, the inner hole of the mounting body and the outer circle of the connecting screw and nut are in a clearance fit;

[0031] Furthermore, the internal threaded structure of the mounting body is connected to the external thread of the connecting screw;

[0032] Furthermore, the outer diameter of the small end of the fastening solid is smaller than the outer diameter of the centering pin part;

[0033] Furthermore, the internal thread of one end of the centering pin is engaged with the external thread of the connecting screw.

[0034] This utility model provides a device for installing centering pins. By using this tool, the device is connected to the threaded structure of the centering pin part and pressed into the valve body sleeve structure. If the thread is worn, the connecting screw is rotated so that the connecting screw located inside the through hole of the mounting body is continuously replenished to the outside, realizing a "mechanical pencil-like" function and ensuring the reusability of the centering pin installation device.

[0035] The method of using this tool includes the following steps:

[0036] S1, the connecting screw 4 passes through the inner hole of the mounting body and mates the threaded structure 9 with the threaded structure 7 inside the mounting body for installation;

[0037] S2, continuously unscrew the external thread 9 of the connecting screw along the internal thread structure 7 of the mounting body so that the connecting screw 9 mates with the internal thread 8 of the fastener. Finally, the connecting screw needs to extend about 5mm beyond the fastener to mate with the centering pin.

[0038] S3, the internal threaded structure 5 of the handheld device is installed in conjunction with the external threaded structure 6 of the mounting device;

[0039] S4, during use, when the connecting screw 9 wears out beyond the structure of the fastener, rotating the connecting screw will continuously push the connecting screw 9, which is located inside the through hole of the mounting body, outwards, achieving a "mechanical pencil-like" function.

[0040] This invention solves the problem of tooling being difficult to reuse during the installation of pin parts, thereby reducing production and processing costs.

[0041] It should be noted that, without conflict, those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps as needed.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A device for installing centering pins, characterized in that: The device includes: a handheld body (1), a mounting body (2), a fastener (3), and connecting screws (4); The handheld unit is connected to the mounting unit; The main body of the mounting body is a cylindrical structure, with one end being a flat structure and the other end being a threaded structure; the central inner hole of the mounting body is a stepped hole, the large end face of the stepped hole is a threaded structure end face, the small end has an internal thread, and the small end face is a flat structure end face; The connecting screw (4) is inserted from the large end of the stepped hole and extends out from the small end of the stepped hole. The external thread of the connecting screw (4) is engaged with the internal thread of the small end of the stepped hole. Adjust the length of the connecting screw extending out of the small end of the stepped hole. The fastening body is a tapered cylindrical rotating structure with a threaded through hole in the center. The threaded through hole is tightened against the protruding connecting screw. After tightening, the connecting screw protruding from the fastening body is used to install the centering pin.

2. The apparatus according to claim 1, characterized in that: The handheld part is a non-perfect spherical structure, with one end being a spherical surface and the other end being a spherical cross-section, which connects to the mounting body.

3. The apparatus according to claim 1, characterized in that: The centering pin is a rotating part with a threaded structure at one end.

4. The apparatus according to claim 1, characterized in that: The outer diameter of the mounting body plane is consistent with the outer diameter of the large end face of the fastener.

5. The apparatus according to claim 1, characterized in that: The inner hole at the center of the mounting body is clearance-fitted with the outer circle of the connecting screw and nut.

6. The apparatus according to claim 1, characterized in that: The outer diameter of the small end of the fastener is smaller than the outer diameter of the centering pin.

Images