Method for checking color eligibility of meshing state of bevel gear pair tooth surface in aero-engine

Abstract

A kind of bevel gear pair tooth surface meshing color qualification inspection method in aero-engine, design from the maximum measured value of the installation play of driving gear bearing, driven gear bearing, based on the relationship between the axial displacement of gear shaft, the tensile load applied on gear shaft, determine the minimum value of axial tensile load F1, F2 required to eliminate the installation play of driving gear bearing, driven gear bearing, and according to the boundary conditions of driving gear, driven gear and its bearing mounting seat, strength deformation characteristics, determine the maximum value of axial tensile load F1, F2 required to eliminate the installation play of driving gear, driven gear bearing, and then select the use value of axial tensile load F1, F2 required to eliminate the installation play of driving gear, driven gear bearing in the maximum value, minimum range when coloring qualification inspection, which can reliably ensure the stability of the axial position of driving gear, driven gear, and avoid driving gear, driven gear and its bearing mounting seat to be significantly deformed so as to be damaged.

Description

Technical Field

[0001] This application belongs to the field of methods for inspecting the conformity of coloring of bevel gear tooth surfaces in aero engines, and specifically relates to a method for inspecting the conformity of coloring of bevel gear tooth surfaces in aero engines. Background Technology

[0002] In aero engines, bevel gear pairs are often used as the power transmission components. The bevel gear pairs need to achieve the best meshing state of tooth surface contact under full load. Therefore, a coloring test for the conformity of tooth surface meshing state has been designed.

[0003] A coloring inspection is performed on the meshing state of the bevel gear pair teeth. Specifically, coloring is applied to the tooth surfaces of the driving and driven gears. The driving gear is then driven to mesh with the driven gear teeth. The marks on the tooth surfaces of the driving and driven gears are then inspected to determine whether the meshing state of the bevel gear pair teeth is qualified.

[0004] When performing a colorimetric conformity inspection on the meshing state of bevel gear pairs, tensile and compressive loads need to be applied to the drive and driven gear shafts to eliminate installation clearances in the drive and driven gear bearings, ensuring the stability of the axial position of the drive and driven gears, and thus ensuring the stability of the size and position of the imprints on the drive and driven gear tooth surfaces. However, currently, there is a lack of standard references for applying tensile and compressive loads to the drive and driven gear shafts. When different personnel conduct tests, the repeatability of the size and position of the imprints on the drive and driven gear tooth surfaces is poor, resulting in different test results. In addition, the lack of precise control over the uniformity of the rotational input load of the drive rotating gear and the meshing resistance load of the driven rotating gear further affects the stability of the size of the imprints on the drive and driven gear tooth surfaces, making it difficult to obtain reliable test results.

[0005] This application is made in view of the aforementioned technical deficiencies.

[0006] It should be noted that the above background information is only used to assist in understanding the inventive concept and technical solution of this invention, and it does not necessarily belong to the prior art of this application. In the absence of clear evidence that the above information was disclosed on the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0007] The purpose of this application is to provide a method for inspecting the conformity of bevel gear tooth surface meshing color in aero-engines, so as to overcome or mitigate at least one of the known technical defects.

[0008] The technical solution of this application is:

[0009] A method for inspecting the conformity of bevel gear tooth surface meshing color in an aero-engine, comprising:

[0010] Step 1: Based on the free clearance parameters of the drive gear bearing, preliminarily determine the axial displacement of the drive gear shaft required to eliminate the installation clearance of the drive gear bearing;

[0011] Step 2: Using the maximum measured value of the drive gear bearing installation clearance, and based on the relationship between the axial displacement of the drive gear shaft and the tensile and compressive loads applied to the drive gear shaft, determine the minimum value of the axial tensile and compressive load F1 required to eliminate the drive gear bearing installation clearance;

[0012] Step 3: Based on the boundary conditions and strength deformation characteristics of the drive gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F1 required to eliminate the bearing mounting clearance of the drive gear;

[0013] Step 4: Within the minimum and maximum range of the axial tensile and compressive load F1 required to eliminate the installation clearance of the driven gear bearing, select the applicable value of the axial tensile and compressive load F1 required to eliminate the installation clearance of the driven gear bearing.

[0014] Step 5: Based on the free clearance parameters of the driven gear bearing, preliminarily determine the axial displacement of the driven gear shaft required to eliminate the installation clearance of the driven gear bearing;

[0015] Step 6: Using the maximum measured value of the driven gear bearing installation clearance, and based on the relationship between the axial displacement of the driven gear shaft and the tensile and compressive loads applied to the driven gear shaft, determine the minimum value of the axial tensile and compressive load F2 required to eliminate the driven gear bearing installation clearance;

[0016] Step 7: Based on the boundary conditions and strength deformation characteristics of the driven gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F2 required to eliminate the bearing mounting clearance of the driven gear;

[0017] Step 8: Within the minimum and maximum range of the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing, select the applicable value of the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing.

[0018] According to at least one embodiment of this application, in the above-mentioned method for inspecting the conformity of bevel gear tooth surface meshing in aero-engines, in step four, the axial tensile and compressive load F1 required to eliminate the installation clearance of the drive gear bearing is specifically selected as the intermediate value between the minimum and maximum values.

[0019] In step eight, the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing is specifically selected as the intermediate value between its minimum and maximum values.

[0020] According to at least one embodiment of this application, the above-described method for checking the conformity of bevel gear tooth surface meshing coloring in aero-engines further includes:

[0021] Step 9: Analyze the relationship between the meshing resistance load of the driven rotating gear and the size of the gear tooth surface imprint. Select the driven rotating gear meshing resistance load value that keeps the size of the gear tooth surface imprint stable as the usage value of the driven rotating gear meshing resistance load M.

[0022] Step 10: Analyze the relationship between the uniformity of the input load of the driving rotating gear and the meshing load of the driven rotating gear. Select the uniformity of the input load of the driving rotating gear with a stable magnitude of the meshing load of the driven rotating gear as the value of the uniformity of the input load of the driving rotating gear N.

[0023] This application has at least the following beneficial technical effects:

[0024] A method for coloring the meshing conformity of bevel gear pairs in aero-engines is provided. The design starts with the maximum measured values ​​of the installation clearance of the driving and driven gear bearings. Based on the relationship between the axial displacement of the gear shaft and the tensile and compressive loads applied to the gear shaft, the minimum values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving and driven gear bearings are determined. Furthermore, based on the boundary conditions and strength deformation characteristics of the driving gear, driven gear, and their bearing mounting seats, the maximum values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving and driven gear bearings are determined. Then, within the range of the maximum and minimum values, the applicable values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving and driven gear bearings are selected for the coloring conformity inspection. This method reliably ensures the stability of the axial position of the driving and driven gears and avoids significant deformation or damage to the driving gear, driven gear, and their bearing mounting seats. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the method for checking the conformity of bevel gear tooth surface meshing coloring in an aero-engine provided in the embodiments of this application.

[0026] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. Furthermore, the drawings are for illustrative purposes only and should not be construed as limiting this application. Detailed Implementation

[0027] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0028] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0029] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a 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; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0030] The following is in conjunction with the appendix Figure 1 This application provides a further detailed description of the method for checking the conformity of coloring on the meshing of bevel gear pairs in aero-engines.

[0031] Step 1: Based on the free clearance parameters of the drive gear bearing, which can be obtained by consulting the technical manual or by actual measurement, preliminarily determine the axial displacement of the drive gear shaft required to eliminate the installation clearance of the drive gear bearing.

[0032] Step 2: Using the maximum measured value of the drive gear bearing installation clearance, and based on the relationship between the axial displacement of the drive gear shaft and the applied tensile and compressive loads on the drive gear shaft (this relationship can be determined experimentally or through simulation), determine the minimum axial tensile and compressive load F1 required to eliminate the drive gear bearing installation clearance. In this step, the maximum measured value of the drive gear bearing installation clearance can be compared with the free-state clearance parameters of the drive gear bearing, or the axial displacement of the drive gear shaft required to eliminate the drive gear bearing installation clearance corresponding to the maximum measured value of the drive gear bearing installation clearance can be compared to preliminarily determine the axial displacement of the drive gear shaft required to eliminate the drive gear bearing installation clearance. If the difference is too large, this step needs to be repeated to redetermine the minimum axial tensile and compressive load F1 required to eliminate the drive gear bearing installation clearance.

[0033] Step 3: Based on the boundary conditions and strength deformation characteristics of the drive gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F1 required to eliminate the bearing mounting clearance of the drive gear.

[0034] Step 4: Within the minimum and maximum range of the axial tensile and compressive load F1 required to eliminate the installation clearance of the drive gear bearing, select the applicable value of the axial tensile and compressive load F1 required to eliminate the installation clearance of the drive gear bearing. This ensures the stability of the axial position of the drive gear during the coloring conformity inspection process and avoids significant deformation or damage to the drive gear and its bearing mounting. Specifically, the applicable value of the axial tensile and compressive load F1 required to eliminate the installation clearance of the drive gear bearing can be selected as the intermediate value between the minimum and maximum values.

[0035] Step 5: Based on the free clearance parameters of the driven gear bearing, which can be obtained by consulting the technical manual or by actual measurement, preliminarily determine the axial displacement of the driven gear shaft required to eliminate the installation clearance of the driven gear bearing.

[0036] Step Six: Using the maximum measured value of the driven gear bearing installation clearance, and based on the relationship between the axial displacement of the driven gear shaft and the applied tensile and compressive loads on the driven gear shaft (this relationship can be determined experimentally or through simulation), determine the minimum axial tensile and compressive load F2 required to eliminate the driven gear bearing installation clearance. In this step, the maximum measured value of the driven gear bearing installation clearance can be compared with the free-state clearance parameters of the driven gear bearing, or the axial displacement of the driven gear shaft required to eliminate the driven gear bearing installation clearance corresponding to the maximum measured value of the driven gear bearing installation clearance can be compared to preliminarily determine the axial displacement of the driven gear shaft required to eliminate the driven gear bearing installation clearance. If the difference is too large, this step needs to be repeated to redetermine the minimum axial tensile and compressive load F2 required to eliminate the driven gear bearing installation clearance.

[0037] Step 7: Based on the boundary conditions and strength deformation characteristics of the driven gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F2 required to eliminate the bearing mounting clearance of the driven gear.

[0038] Step 8: Within the minimum and maximum range of the axial tensile and compressive load F2 required to eliminate the bearing clearance of the driven gear, select the applicable value of the axial tensile and compressive load F2 required to eliminate the bearing clearance of the driven gear. This ensures the stability of the axial position of the driven gear during the coloring conformity inspection process and avoids significant deformation or damage to the driven gear and its bearing mounting. Specifically, the applicable value of the axial tensile and compressive load F2 required to eliminate the bearing clearance of the driven gear can be the intermediate value between the minimum and maximum values.

[0039] Step 9: Analyze the relationship between the meshing resistance load of the driven rotating gear and the size of the gear tooth surface imprint. This relationship can be determined by experiment or simulation. Select a driven rotating gear meshing resistance load value that keeps the size of the gear tooth surface imprint stable as the usage value of the driven rotating gear meshing resistance load M. This usage value should not cause significant deformation or damage to the driven rotating gear and its bearing housing, and it should be applicable.

[0040] Step 10: Analyze the relationship between the uniformity of the input load of the driving rotating gear and the meshing load of the driven rotating gear. This relationship can be determined by experiment or simulation. Select the uniformity of the input load of the driving rotating gear with a stable meshing load of the driven rotating gear as the applicable value of the uniformity N of the input load of the driving rotating gear. This applicable value ensures that the size of the imprint on the gear tooth surface remains stable and does not cause significant deformation or damage to the driving rotating gear and its bearing housing. It can also be applied. During the coloring qualification inspection, a small automatic motor and a small torque reducer can be used to apply the load so that the gear pair can achieve uniform and low-speed rotation.

[0041] Regarding the method for coloring the meshing compliance of bevel gear pairs in aero-engines disclosed in the above embodiments, those skilled in the art will understand that its design starts from the maximum measured values ​​of the installation clearance of the driving gear bearing and the driven gear bearing. Based on the relationship between the axial displacement of the gear shaft and the tensile and compressive loads applied to the gear shaft, it determines the minimum values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving gear bearing and the driven gear bearing. Furthermore, based on the boundary conditions and strength deformation characteristics of the driving gear, the driven gear, and their bearing mounting seats, it determines the maximum values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving gear and the driven gear bearing. Then, within the range of the maximum and minimum values, it selects the applicable values ​​of the axial tensile and compressive loads F1 and F2 required to eliminate the installation clearance of the driving gear and the driven gear bearing during the coloring compliance inspection. This design reliably ensures the stability of the axial positions of the driving and driven gears and prevents significant deformation or damage to the driving and driven gears and their bearing mounting seats. Furthermore, by analyzing the relationship between the meshing resistance load of the driven rotating gear and the size of the gear tooth surface imprint, a value for the driven rotating gear meshing resistance load M that maintains a stable gear tooth surface imprint size is selected. Similarly, by analyzing the relationship between the uniformity of the input load of the driving rotating gear and the meshing load of the driven rotating gear, a value for the uniformity of the input load of the driving rotating gear N that maintains a stable driven rotating gear meshing load size is selected. This ensures the stability of the size and position of the imprints on the driving and driven gear tooth surfaces, resulting in reliable experimental results.

[0042] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0043] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A method for inspecting the conformity of bevel gear tooth surface meshing coloring in aero-engines, characterized in that, include: Step 1: Based on the free clearance parameters of the drive gear bearing, preliminarily determine the axial displacement of the drive gear shaft required to eliminate the installation clearance of the drive gear bearing; Step 2: Using the maximum measured value of the drive gear bearing installation clearance, and based on the relationship between the axial displacement of the drive gear shaft and the tensile and compressive loads applied to the drive gear shaft, determine the minimum value of the axial tensile and compressive load F1 required to eliminate the drive gear bearing installation clearance; Step 3: Based on the boundary conditions and strength deformation characteristics of the drive gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F1 required to eliminate the bearing mounting clearance of the drive gear; Step 4: Within the minimum and maximum range of the axial tensile and compressive load F1 required to eliminate the installation clearance of the driven gear bearing, select the applicable value of the axial tensile and compressive load F1 required to eliminate the installation clearance of the driven gear bearing. Step 5: Based on the free clearance parameters of the driven gear bearing, preliminarily determine the axial displacement of the driven gear shaft required to eliminate the installation clearance of the driven gear bearing; Step 6: Using the maximum measured value of the driven gear bearing installation clearance, and based on the relationship between the axial displacement of the driven gear shaft and the tensile and compressive loads applied to the driven gear shaft, determine the minimum value of the axial tensile and compressive load F2 required to eliminate the driven gear bearing installation clearance; Step 7: Based on the boundary conditions and strength deformation characteristics of the driven gear and its bearing mounting base, determine the maximum value of the axial tensile and compressive load F2 required to eliminate the bearing mounting clearance of the driven gear; Step 8: Within the minimum and maximum range of the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing, select the applicable value of the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing.

2. The method for inspecting the conformity of bevel gear tooth surface meshing coloring in aero-engines according to claim 1, characterized in that, In step four, the axial tensile and compressive load F1 required to eliminate the installation clearance of the drive gear bearing is specifically selected as the intermediate value between the minimum and maximum values. In step eight, the axial tensile and compressive load F2 required to eliminate the installation clearance of the driven gear bearing is specifically selected as the intermediate value between its minimum and maximum values.

3. The method for inspecting the conformity of bevel gear tooth surface meshing coloring in aero-engines according to claim 1, characterized in that, Also includes: Step 9: Analyze the relationship between the meshing resistance load of the driven rotating gear and the size of the gear tooth surface imprint. Select the driven rotating gear meshing resistance load value that keeps the size of the gear tooth surface imprint stable as the usage value of the driven rotating gear meshing resistance load M. Step 10: Analyze the relationship between the uniformity of the input load of the driving rotating gear and the meshing load of the driven rotating gear. Select the uniformity of the input load of the driving rotating gear with a stable magnitude of the meshing load of the driven rotating gear as the value of the uniformity of the input load of the driving rotating gear N.

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