Generator spline shaft positioning auxiliary tool

Abstract

The utility model relates to aviation maintenance tool technical field, concretely is a kind of generator spline shaft positioning auxiliary tool, including generator base, annular array in four bolt holes on generator base, generator bolt is screwed in bolt hole in one end, inner spline bushing is rotatably installed in generator base, the axle center formed by four bolt holes is coaxially arranged with inner spline bushing, it is characterized by: it further includes round shaft body, auxiliary outer spline is set to one end of round shaft body, auxiliary inner spline groove is set to the other end of round shaft body, the side of the round shaft body is connected with extension arm, the side of the extension arm is provided with indicating positioning pin, and the other side is provided with positioning hole;The utility model can assist positioning spline shaft and base inner spline bushing, quickly complete the installation of generator and base, reduce the labor intensity of generator spline shaft assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of aviation maintenance tool technology, specifically to an auxiliary tooling for positioning a generator spline shaft. Background Technology

[0002] Currently, during the installation of a certain type of aircraft permanent magnet generator, it is necessary to align the splines on the splined shaft with the inner spline grooves on the inner splined bushing of the generator base. However, the connection between the inner splined bushing and the splined shaft is not visually accessible, making it difficult for the inner spline grooves to precisely mesh with the splined shaft teeth. This makes the rapid and accurate installation of the generator a challenging issue in the scheduled maintenance and repair of aviation equipment. During the scheduled maintenance and repair of this component, multiple adjustments to the spline angle are required for trial installations before the generator and its base can be successfully and accurately installed. This makes the entire installation process time-consuming and labor-intensive, and it is also prone to causing additional wear on the relevant spline meshing pairs and sealing rings, affecting the quality and efficiency of scheduled maintenance work. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing an auxiliary tooling for positioning the spline shaft of a generator. This tooling can assist in positioning the spline shaft and the spline bushing inside the base, enabling the generator to be installed quickly and reducing the labor intensity of installing and removing the generator spline shaft.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A generator spline shaft positioning auxiliary tooling includes a generator base, four bolt holes arranged in a ring on the generator base, a generator bolt with one end screwed into the bolt holes, and an inner spline bushing rotatably installed in the generator base. The shaft formed by the four bolt holes is coaxially arranged with the inner spline bushing. The tooling is characterized by further including a round shaft, an auxiliary external spline disposed at one end of the round shaft, an auxiliary internal spline groove disposed at the other end of the round shaft, an extension arm connected to one side of the round shaft, an indicator positioning pin disposed on one side of the extension arm, and a positioning hole disposed on the other side.

[0006] Furthermore, the indicator positioning pin is coaxially arranged with the positioning hole.

[0007] Furthermore, the outer diameter of the indicating positioning pin is smaller than the inner diameter of the bolt hole, and the inner diameter of the positioning hole is the same as the outer diameter of the generator bolt.

[0008] Furthermore, the circular shaft, auxiliary external spline, auxiliary internal spline groove, extension arm, and indicator positioning pin are all made using 3D printing.

[0009] The beneficial effects of this utility model are:

[0010] In practical applications, the auxiliary external spline is first vertically inserted into the spline groove of the inner spline bushing of the generator base. One of the four generator bolts on the base is selected as the reference point. The extension arm is rotated, and the angle of the inner spline bushing of the base is slowly adjusted so that the positioning hole coincides with the generator bolt. After ensuring that the inner spline bushing on the base is in a stationary state, this application is vertically removed. Then, the auxiliary inner spline groove is vertically inserted into the generator spline shaft and engaged with it. The generator bolt at the reference point is removed. The round shaft is then placed coaxially with the inner spline bushing of the base. The extension arm of this application is rotated so that the indicator positioning pin is aligned with the selected bolt hole on the generator base. At this time, the gear angle of the spline shaft and the inner spline bushing is the same. This application is then removed, and the generator spline shaft is straightly inserted into the inner spline bushing of the base, thus achieving one-time installation of the generator. This utility model can assist in positioning the spline shaft and the inner spline bushing of the base, quickly completing the installation of the generator and the base, and reducing the labor intensity of installing and removing the generator spline shaft. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model;

[0013] Figure 3 This is a side view of the present invention;

[0014] Figure 4 yes Figure 3 Cross-sectional view at point AA;

[0015] Reference numerals: 1. Generator base; 101. Bolt hole; 102. Generator bolt; 2. Inner spline bushing; 3. Round shaft; 4. Auxiliary outer spline; 5. Auxiliary inner spline groove; 6. Extension arm; 7. Indicator positioning pin; 8. Positioning hole. Detailed Implementation

[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a generator spline shaft positioning auxiliary tooling includes a generator base 1, four bolt holes 101 arranged in a ring on the generator base 1, a generator bolt 102 screwed into the bolt holes 101 at one end, and an inner spline bushing 2 rotatably installed in the generator base 1. The shaft formed by the four bolt holes 101 is coaxially arranged with the inner spline bushing 2. The tooling is characterized by further including a round shaft 3, an auxiliary external spline 4 disposed at one end of the round shaft 3, an auxiliary inner spline groove 5 disposed at the other end of the round shaft 3, an extension arm 6 connected to one side of the round shaft 3, an indicator positioning pin 7 disposed on one side of the extension arm 6, and a positioning hole 8 disposed on the other side.

[0017] In use, first vertically insert the auxiliary external spline 4 into the inner spline groove of the inner spline bushing 2 of the generator base 1. Select one of the four generator bolts 102 on the base as a reference point, rotate the extension arm 6, and slowly adjust the angle of the inner spline bushing 2 on the base so that the positioning hole 8 coincides with the generator bolt 102. After ensuring that the inner spline bushing 2 on the base is in a stationary state, vertically remove this application. Then vertically insert the auxiliary inner spline groove 5 into the generator spline shaft and engage it with it. Remove the generator bolt 102 on the reference point, and then remove the round shaft. Place body 3 coaxially with the inner spline bushing 2 of the base, rotate the extension arm 6 of this application so that the indicator positioning pin 7 is aligned with the selected bolt hole 101 on the generator base 1. At this time, the gear angle of the spline shaft and the inner spline bushing 2 is the same. Remove this application and insert the generator spline shaft straight into the inner spline bushing 2 of the base, so that the generator can be installed in one step. This utility model can assist in positioning the spline shaft and the inner spline bushing 2 of the base, quickly complete the installation of the generator and the base, and reduce the labor intensity of assembling and disassembling the generator spline shaft.

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the indicator positioning pin 7 and the positioning hole 8 are coaxially arranged; in this embodiment, the positioning of the reference point can be more accurate when the indicator positioning pin 7 and the positioning hole 8 are coaxially arranged.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the outer diameter of the indicator positioning pin 7 is smaller than the inner diameter of the bolt hole 101, and the inner diameter of the positioning hole 8 is the same as the outer diameter of the generator bolt 102. In this embodiment, when the outer diameter of the indicator positioning pin 7 is smaller than the inner diameter of the bolt hole 101, the indicator positioning pin 7 is inserted into the bolt hole 101, which can better align the reference point. When the inner diameter of the positioning hole 8 is the same as the outer diameter of the generator bolt 102, the angle can be determined more quickly.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the cylindrical shaft 3, auxiliary external spline 4, auxiliary internal spline groove 5, extension arm 6, and indicator positioning pin 7 are all made by 3D printing. In this embodiment, when the cylindrical shaft 3, auxiliary external spline 4, auxiliary internal spline groove 5, extension arm 6, and indicator positioning pin 7 are all made by 3D printing, the process is simpler and faster.

[0021] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A generator spline shaft positioning auxiliary tooling, comprising a generator base (1), four bolt holes (101) arranged in a ring on the generator base (1), a generator bolt (102) with one end screwed into the bolt hole (101), an inner spline bushing (2) rotatably installed in the generator base (1), wherein the axis formed by the four bolt holes (101) is coaxially arranged with the inner spline bushing (2), characterized in that: It also includes a round shaft (3), an auxiliary external spline (4) at one end of the round shaft (3), an auxiliary internal spline groove (5) at the other end of the round shaft (3), an extension arm (6) connected to one side of the round shaft (3), an indicator positioning pin (7) on one side of the extension arm (6), and a positioning hole (8) on the other side.

2. The generator spline shaft positioning auxiliary tooling according to claim 1, characterized in that, The indicator positioning pin (7) is coaxially arranged with the positioning hole (8).

3. The generator spline shaft positioning auxiliary tooling according to claim 1, characterized in that, The outer diameter of the indicator positioning pin (7) is smaller than the inner diameter of the bolt hole (101), and the inner diameter of the positioning hole (8) is the same as the outer diameter of the generator bolt (102).

4. The generator spline shaft positioning auxiliary tooling according to claim 1, characterized in that, The circular shaft (3), auxiliary external spline (4), auxiliary internal spline groove (5), extension arm (6) and indicator positioning pin (7) are all made by 3D printing.

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