Fixing device for mounting angle of connecting arm bearing of rear suspension center of V2500 engine

Abstract

The utility model discloses a V2500 engine rear suspension center connecting arm bearing installation angle fixing device which comprises a base used for being fixedly clamped on a machine tool and two angle positioning and centering devices installed at the two ends of the base respectively, a supporting table is arranged at the bottoms of the angle positioning and centering devices, a centering column is arranged in the middle of the upper face of the supporting table, and the supporting table is provided with a bearing. The centering column can be inserted into an inner ring of a bearing on the rear lifting point connecting arm in a matched mode, the centering column is in transition fit with the inner ring of the bearing, arc-shaped protrusions are arranged on the two sides of the upper face of the supporting table respectively, and the center of the circumference where the arc-shaped protrusions are located coincides with the center of the centering column. The two arc-shaped protrusions can be inserted into arc-shaped grooves of a bearing on the rear lifting point connecting arm in a matched mode, and the arc-shaped protrusions are in transition fit with the arc-shaped grooves of the bearing. According to the utility model, the mounting angle of the bearing in the rear lifting point connecting arm can be fixed, so that the mounting angle of the bearing is prevented from being changed during flanging processing.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary processing of the rear suspension point connecting arm bearing of an aviation V2500 engine, and particularly relates to a device for fixing the installation angle of the rear suspension point connecting arm bearing of a V2500 engine. Background Technique

[0002] As Figure 5 shown is a schematic structural diagram of the rear suspension point connecting arm of a V2500 engine. Bearing mounting holes 401 are respectively provided at both ends of the rear suspension point connecting arm 400. Bearings 500 are respectively installed in the two bearing mounting holes 401. The bearing 500 includes an inner ring 502 and an outer ring 501. Two arc-shaped grooves 503 are provided on the inner side of the outer ring 501. The two arc-shaped grooves 503 are located on opposite sides and on the same circumference.

[0003] During processing, it often involves the flanging of the bearing 500 on the rear suspension point connecting arm of the V2500 engine. In the past flanging processing, whether it is flanging by a machine tool or by manual tools, the special tools involved do not have the function of fixing the installation angle of the bearing 500. This makes it easy for the bearing 500 to rotate in the bearing mounting hole 401 of the rear suspension point connecting arm 400 during the flanging operation of the bearing 500. However, in the processing manual, there are certain requirements for the installation angle of the bearing 500 in the bearing mounting hole 401 of the rear suspension point connecting arm 400. Therefore, we designed a device that can fix the installation angle of the rear suspension point connecting arm bearing of the V2500 engine to eliminate the problem that the installation angle of the bearing 500 may change due to the rotation of the bearing 500 in the bearing mounting hole 401 of the rear suspension point connecting arm 400 during the flanging process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for fixing the installation angle of the rear suspension point connecting arm bearing of a V2500 engine, which can fix the installation angle of the bearing in the rear suspension point connecting arm and avoid the change of the bearing installation angle during flanging processing.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A fixing device for the installation angle of the rear suspension link bearing of a V2500 engine, characterized in that it includes a base for fixedly clamping on a machine tool and two angle positioning and centering devices respectively installed at both ends of the base. The bottom of the angle positioning and centering device is a support platform. In the middle of the upper surface of the support platform, there is a centering column. The centering column can be inserted into the inner ring of the bearing on the rear suspension link in a mating manner, and the fit between the centering column and the inner ring of the bearing is an interference fit. On both sides of the upper surface of the support platform, there are respectively arc-shaped protrusions. The center of the circle where the arc-shaped protrusions are located coincides with the center of the centering column. The two arc-shaped protrusions can be inserted into the arc-shaped grooves of the bearing on the rear suspension link in a mating manner, and the fit between the arc-shaped protrusions and the arc-shaped grooves of the bearing is an interference fit.

[0007] Further, a middle through hole for fixedly connecting to an external manual flanging tool is provided in the middle of the angle positioning and centering device.

[0008] Further, clamping planes are respectively provided on both sides of the support platform of the angle positioning and centering device, and the clamping planes on both sides are parallel to each other.

[0009] Further, the installation angle fixing device further includes a fixing screw. An oval countersunk hole is provided on the base, and a threaded hole is provided at the bottom of the angle positioning and centering device. The fixing screw passes through the oval countersunk hole and is connected to the threaded hole.

[0010] Further, the support platform, the centering column and the arc-shaped protrusions are integrally formed.

[0011] Further, the base is in the shape of a cuboid.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] The present utility model can insert the centering column into the inner ring of the bearing on the rear suspension link in an interference fit manner to center the bearing, and at the same time insert the arc-shaped protrusions into the arc-shaped grooves of the bearing on the rear suspension link in an interference fit manner to limit the rotation of the bearing, thereby realizing the fixation of the installation angle of the bearing in the rear suspension link, avoiding the change of the installation angle of the bearing during flanging processing, better ensuring the quality of flanging processing, and making it meet the requirements of the processing manual. Description of the Drawings

[0014] Figure 1 is a top view schematic diagram of the installation angle fixing device of the present utility model;

[0015] Figure 2 is a front view schematic diagram of the installation angle fixing device of the present utility model;

[0016] Figure 3 is a side view schematic diagram of the installation angle fixing device of the present utility model;

[0017] Figure 4 It is a bottom view schematic diagram of the installation angle fixing device of the present utility model;

[0018] Figure 5 It is a structural schematic diagram of the rear suspension point connecting arm equipped with bearings.

[0019] Meanings of the reference numerals in the figure:

[0020] 100 - base; 101 - oval countersunk hole; 200 - angle positioning and centering device; 201 - support platform; 202 - arc-shaped protrusion; 203 - centering column; 204 - clamping plane; 205 - middle through hole; 300 - fixing screw; 400 - rear suspension point connecting arm; 401 - bearing mounting hole; 500 - bearing; 501 - outer ring; 502 - inner ring; 503 - arc-shaped groove. Specific embodiments

[0021] The present utility model will be further described below in conjunction with embodiments.

[0022] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, understand greater than, less than, exceeding, etc. as not including the present number, and understand above, below, within, etc. as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Embodiment:

[0026] As Figures 1 to 4 shown is the bearing installation angle fixing device for the rear suspension point connecting arm of the V2500 engine in this embodiment, which includes a base 100, two angle positioning and centering devices 200, and four fixing screws 300.

[0027] The base 100 is used to be fixedly clamped on a machine tool. The base 100 in this embodiment is in the shape of a cuboid, and the size of the base 100 is designed according to the size of the rear suspension point connecting arm. Four oval countersunk holes 101 are provided on the base 100.

[0028] Two threaded holes are respectively provided at the bottoms of the two angle positioning and centering devices 200. The fixing screws 300 respectively pass through the oval countersunk holes 101 and are connected to the threaded holes, so as to fix the two angle positioning and centering devices 200 to the two end parts of the base 100 respectively. The setting of the oval countersunk holes 101 enables the fixing screws 300 to have a certain movement space after being loosened, so that the position of the angle positioning and centering device 200 can be finely adjusted. The fixing screws 300 adopted in this embodiment are internal hexagonal screws.

[0029] Wherein, the bottom of the angle positioning and centering device 200 is a support platform 201, and the support platform 201 is used to support under the bearing 500. A centering column 203 is provided in the middle of the upper surface of the support platform 201. The size of the centering column 203 is adapted to the inner ring 502 of the bearing 500 on the rear suspension point connecting arm 400. During use, the centering column 203 can be inserted into the inner ring 502 of the bearing 500 in cooperation, and the fit between the centering column 203 and the inner ring 502 of the bearing 500 is an interference fit, and the interference fit can make the fit between the inner ring 502 of the bearing 500 and the centering column 203 tighter.

[0030] Arc-shaped protrusions 202 are respectively provided on both sides of the upper surface of the support platform 201. The center of the circle where the arc-shaped protrusions 202 are located coincides with the center of the centering column 203. The size and position of the arc-shaped protrusions 202 are adapted to the arc-shaped grooves 503 of the bearing 500 on the rear suspension point connecting arm 400. During use, the two arc-shaped protrusions 202 can be inserted into the arc-shaped grooves 503 of the rear bearing 500 in cooperation, and the fit between the arc-shaped protrusions 202 and the arc-shaped grooves 503 of the bearing 500 is an interference fit, and the interference fit can make the fit between the arc-shaped protrusions 202 and the arc-shaped grooves 503 of the bearing 500 tighter.

[0031] The support platform 201, the centering column 203 and the arc-shaped protrusions 202 in this embodiment are integrally formed.

[0032] A middle through hole 205 is provided in the middle of the angle positioning and centering device, and the middle through hole 205 is used for fixed connection to an external manual flanging tool. Clamping planes 204 are respectively provided on both sides of the support platform 201 of the angle positioning and centering device, and the clamping planes 204 on both sides are parallel to each other.

[0033] The using process of the bearing installation angle fixing device for the rear suspension point connecting arm of the V2500 engine in this embodiment is as follows:

[0034] First, perform the assembly. During the assembly, pass four fixing screws 300 through the oval countersunk holes 101 respectively and connect them to the corresponding angle positioning and centering device 200. At this time, do not tighten the fixing screws 300 first, so that the angle positioning and centering device 200 can be finely adjusted within a certain range. Assemble the bearing 500 to be flanged onto the rear lifting point connecting arm 400 according to the installation angle required by the manual. Correspondingly, fit the rear lifting point connecting arm 400 with the bearing 500 already installed onto the installation angle fixing device. During the installation process, the position of the angle positioning and centering device 200 can be finely adjusted to ensure that the centering column 203 is inserted into the inner ring 502 of the bearing 500, and the arc-shaped protrusion 202 is inserted into the arc-shaped groove 503 of the bearing 500. Then tighten the fixing screws 300 to fix the position of the angle positioning and centering device 200 and complete the assembly.

[0035] During the flanging process, place the installation angle fixing device with the rear lifting point connecting arm installed on the pedestal of the machine tool as a whole, clamp and fix the base, and then the processing can be carried out.

[0036] The angle positioning and centering device 200 of the installation angle fixing device in this embodiment can be used individually. The use of a single angle positioning and centering device 200 is mainly for manual flanging processing.

[0037] When using a single angle positioning and centering device 200, the angle positioning and centering device 200 does not need to be fixed to the base 100. The following two methods can be used for fixation:

[0038] 1. Pass another screw through the middle through hole 205 of the angle positioning and centering device 200 and fixedly connect it to an external manual flanging tool, and then install the bearing onto the angle positioning and centering device 200 to perform manual flanging processing.

[0039] 2. Clamp the angle positioning and centering device 200 by an external tool on the clamping planes 204 on both sides of the angle positioning and centering device 200, clamp and fix the angle positioning and centering device 200, and then install the bearing onto the angle positioning and centering device 200 to perform manual flanging processing.

[0040] The above embodiments of the present utility model do not limit the protection scope of the present utility model. The implementation manners of the present utility model are not limited thereto. All kinds of modifications, substitutions or changes made to the above structure of the present utility model according to the above content of the present utility model, in accordance with the common general technical knowledge and customary means in the art, without departing from the above basic technical idea of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A fixing device for the installation angle of the rear suspension link bearing of a V2500 engine, characterized in that: It includes a base for fixing and clamping on a machine tool and two angle positioning and centering devices respectively installed at both ends of the base. The bottom of the angle positioning and centering device is a support platform. In the middle of the upper surface of the support platform, there is a centering column. The centering column can be inserted into the inner ring of the bearing on the rear suspension point connecting arm in a fitting manner, and the fit between the centering column and the inner ring of the bearing is an interference fit. On both sides of the upper surface of the support platform, there are respectively arc-shaped protrusions. The center of the circle where the arc-shaped protrusions are located coincides with the center of the centering column. The two arc-shaped protrusions can be inserted into the arc-shaped grooves of the bearings on the rear suspension point connecting arm in a fitting manner, and the fit between the arc-shaped protrusions and the arc-shaped grooves of the bearings is an interference fit.

2. The V2500 engine rear suspension link bearing installation angle fixing device according to claim 1, characterized in that: In the middle of the angle positioning and centering device, there is a middle through hole for fixedly connecting to an external manual flanging tool.

3. The V2500 engine rear suspension link bearing installation angle fixing device according to claim 1, characterized in that: On both sides of the support platform of the angle positioning and centering device, there are respectively clamping planes, and the clamping planes on both sides are parallel to each other.

4. The V2500 engine rear suspension link bearing installation angle fixing device according to claim 1, characterized in that: The installation angle fixing device further includes a fixing screw. The base is provided with an oval countersunk hole, and the bottom of the angle positioning and centering device is provided with a threaded hole. The fixing screw passes through the oval countersunk hole and is connected to the threaded hole.

5. The V2500 engine rear suspension link bearing installation angle fixing device according to claim 1, characterized in that: The support platform, centering column and arc-shaped protrusions are integrally formed.

6. The V2500 engine rear suspension link bearing installation angle fixing device according to claim 1, characterized in that: The base is in the shape of a cuboid.

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