Drive axle spiral bevel gear contact mark adjusting method and system and electronic equipment

Abstract

The invention relates to the technical field of spiral bevel gears, and provides a drive axle spiral bevel gear contact mark adjusting method and system and electronic equipment. The method comprises the steps of obtaining target torque data based on vehicle operation condition analysis; constructing a drive axle assembly flexible model through mechanical simulation software, and analyzing the rigid characteristic data to obtain spiral bevel gear dislocation data corresponding to the target torque data; based on the first gear data, the spiral bevel gear is calculated through design software, and second gear data of the spiral bevel gear are obtained; based on the first gear data and the second gear data, inputting the dislocation data into design software, and calculating first contact mark data of the spiral bevel gear at the target torque data; and on the basis of the offset between the first contact mark data of the spiral bevel gear and the standard contact mark, the optimal contact mark data is obtained by adjusting the second gear data. The reliability and the stability of the spiral bevel gear can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of spiral bevel gears, and in particular to a method, system and electronic equipment for adjusting the contact footprint of spiral bevel gears of a drive axle. Background Art

[0002] The drive axle is an important part of the vehicle transmission system. Its main function is to reduce speed and increase torque. The spiral bevel gear is a key component of the drive axle, affecting the reliability and comfort of the vehicle. Since the two axes of the spiral bevel gear are perpendicular or staggered, the tooth surface shape is generally a spiral involute surface or a quasi-hyperboloid surface. Unlike the cylindrical gears with two parallel axes, the meshing principle is more complicated than that of the cylindrical gears, so the design quality is more difficult to control. Market users have reported many problems such as broken teeth, abnormal tooth surface wear, and noise.

[0003] There are many factors that affect the reliability and stability of spiral bevel gears, among which the gear contact mark, one of the main factors, is a very important evaluation index. The current design method of spiral bevel gears generally designs the contact mark under no-load conditions. In theory, the gears can mesh well, but in actual work, the drive axle needs to transmit torque. Under the action of load, the drive axle housing and the reducer housing will inevitably deform, resulting in changes in the installation position of the spiral bevel gears, causing the meshing contact mark to shift, affecting the gear reliability and running smoothness.

[0004] Based on the above content, there is an urgent need for a drive axle spiral bevel gear contact mark adjustment method, system and electronic equipment to overcome the situation where the spiral bevel gear meshing produces a large offset in the contact mark, affects the gear reliability and operating stability, and causes gear damage. Summary of the invention

[0005] The purpose of this application is to provide a method, system and electronic equipment for adjusting the contact footprint of spiral bevel gears of a drive axle, which overcomes the technical problems of poor reliability and stability of spiral bevel gears in the prior art. The specific scheme is as follows:

[0006] A method for adjusting the contact mark of spiral bevel gears of a drive axle, the method comprising the following steps:

[0007] S1: Obtain target torque data based on the vehicle's operating condition analysis;

[0008] S2: constructing a flexible model of the drive axle assembly through mechanical simulation software, and analyzing the rigidity characteristic data to obtain the spiral bevel gear misalignment data corresponding to the target torque data; the rigidity characteristic data at least includes: the rigidity characteristics of the drive axle housing, the reducer housing and each supporting gear bearing;

[0009] S3: Based on the first gear data, the spiral bevel gear is calculated by design software to obtain second gear data of the spiral bevel gear;

[0010] S4: Based on the first gear data and the second gear data, the misalignment data is input into the design software to calculate the first contact imprint data of the spiral bevel gear at the target torque data;

[0011] S5: Based on the offset between the first contact mark data of the spiral bevel gear and the standard contact mark, the optimal contact mark data is obtained by adjusting the second gear data.

[0012] Optionally, step S1 specifically includes:

[0013] Acquiring first torque data of the vehicle within a preset time;

[0014] By analyzing and calculating the first torque data, second torque data is obtained in which the ratio of the working time to the preset time in the first torque data is greater than or equal to a preset threshold;

[0015] The second torque data is used as target torque data.

[0016] Optionally, the misalignment data at least includes: a first bevel gear misalignment amount △H, a second bevel gear misalignment amount △J, an offset amount △V between two bevel gear shafts, and an angle △∑ between two bevel gear shafts.

[0017] Optionally, the step S5 specifically includes:

[0018] When the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, the second gear data is adjusted so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value;

[0019] The second gear data at least includes: gear pressure angle deviation, helix angle deviation, tooth length direction crown amount, tooth height direction crown amount, and diagonal direction distortion amount.

[0020] Optionally, when the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, adjusting the second gear data so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value specifically includes:

[0021] Based on the acquired second torque data, priority is defined; wherein the adjustment priority of the second torque data with a high proportion of working time is higher than that of the second torque data with a low proportion of working time;

[0022] According to the priority order, the preset standard value is matched, and the first contact mark data of the second torque data with a high priority is adjusted preferentially until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value.

[0023] Optionally, the method of matching the preset standard value according to the priority order and preferentially adjusting the first contact mark data corresponding to the second torque data with a high priority until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value further includes:

[0024] When the offset between the first contact mark corresponding to the second torque data of the second priority after adjustment and the standard contact mark is less than the preset standard value, so that the offset between the first contact mark corresponding to the second torque data of the high priority and the standard contact mark increases or is greater than or equal to the preset standard value, then, the first contact mark corresponding to the second torque data of the second priority is readjusted by adjusting the third data; the third data at least includes: adjustment direction, adjustment amplitude and contact mark size;

[0025] When the offset between the first contact mark corresponding to the adjusted high-priority second torque data and the standard contact mark is less than the preset standard value, the offset between the first contact mark corresponding to the second high-priority torque data and the standard contact mark increases. In this case, the first contact mark corresponding to the high-priority second torque data is readjusted by adjusting the third data.

[0026] A drive axle spiral bevel gear contact footprint adjustment system, comprising:

[0027] An acquisition module configured to acquire target torque data based on an analysis of a vehicle's operating conditions;

[0028] A simulation analysis module is configured to construct a flexible model of the drive axle assembly through mechanical simulation software, and analyze rigidity characteristic data to obtain spiral bevel gear misalignment data corresponding to target torque data; the rigidity characteristic data at least includes: rigidity characteristics of the drive axle housing, the reducer housing, and each supporting gear bearing;

[0029] a gear construction module configured to calculate the spiral bevel gear through design software based on the first gear data to obtain second gear data of the spiral bevel gear;

[0030] a calculation module configured to input the misalignment data into the design software based on the first gear data and the second gear data, and calculate the first contact imprint data of the spiral bevel gear at the target torque data;

[0031] The adjustment module is configured to obtain optimal contact print data by adjusting the second gear data based on the offset between the first contact print data of the spiral bevel gear and the standard contact print.

[0032] An electronic device comprises: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the method.

[0033] A computer-readable storage medium stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of the method.

[0034] A computer program product comprises a computer program / instruction, which implements the method when executed by a processor.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention provides a contact print adjustment method, system and electronic equipment for a spiral bevel gear of a drive axle, which obtain target torque data by analyzing the operating conditions of a vehicle; use mechanical simulation software to build a flexible model of a drive axle assembly, and analyze rigid characteristic data to obtain misalignment data of the spiral bevel gear under different working conditions; use design software to build the spiral bevel gear, calculate the first gear data and the second gear data of the spiral bevel gear, and calculate the first contact print data corresponding to the target torque data; according to the offset between the first contact print data and the standard contact print, the second gear data is adjusted to obtain the optimal contact print data, thereby improving the reliability and stability of the spiral bevel gear and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of the contact mark adjustment method of the spiral bevel gear of the drive axle;

[0038] Figure 2 The structural block diagram of the contact mark adjustment system for the spiral bevel gear of the drive axle;

[0039] Figure 3 It is a schematic diagram of the analysis results based on the vehicle operating conditions;

[0040] Figure 4 and Figure 5 It is a schematic diagram of the misalignment of the spiral bevel gear in each axial direction of the present invention;

[0041] Figure 6 This is a schematic diagram of the calculation results of the misalignment amount;

[0042] Figure 7 Schematic diagram of the contact mark of spiral bevel gear under different working conditions. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of this application clearer, the following will be combined with the attached Figure 1-7 The present application is further described in detail. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0044] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, and unless the context clearly indicates other meanings, "multiple" generally includes at least two.

[0045] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0047] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0048] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0049] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0050] Combine the following Figure 1 The embodiments of the present application are described in detail.

[0051] A method for adjusting the contact mark of spiral bevel gears of a drive axle, the method comprising the following steps:

[0052] S1: Obtain target torque data based on the vehicle's operating condition analysis;

[0053] S2: constructing a flexible model of the drive axle assembly through mechanical simulation software, and analyzing the rigidity characteristic data to obtain the misalignment data of the spiral bevel gear corresponding to the target torque data; the rigidity characteristic data at least includes: the rigidity characteristics of the drive axle housing, the reducer housing and each supporting gear bearing;

[0054] S3: Calculate the spiral bevel gear through design software to obtain first gear data and second gear data of the spiral bevel gear;

[0055] S4: Based on the first gear data and the second gear data, the misalignment data is input into the design software to calculate the first contact imprint data of the spiral bevel gear at the target torque data;

[0056] S5: Based on the offset between the first contact mark data of the spiral bevel gear and the standard contact mark, the optimal contact mark data is obtained by adjusting the second gear data.

[0057] Specifically, the present application obtains target torque data according to the operating conditions of the vehicle and after analysis; wherein the target torque data indicates the torque data output under the vehicle load in which the user's working time accounts for a relatively high proportion in the recent period; constructs the flexible model of the drive axle assembly through mechanical simulation software, and analyzes the rigid characteristic data in the model to obtain the spiral bevel gear misalignment data corresponding to the target torque data; constructs the spiral bevel gear by using design software, and calculates the second gear data of the spiral bevel gear; obtains the optimal contact print data by adjusting the second gear data according to the offset between the first contact print data of the target torque data and the standard contact print. It can be understood that the optimal contact print data can ensure the working stability and reliability of the spiral bevel gear of the vehicle under different loads corresponding to the target torque data, and avoid problems such as broken teeth, abnormal wear and noise of the spiral bevel gear.

[0058] In a specific embodiment, Figure 3 As shown, in step S1, based on the operating condition analysis of the vehicle, the target torque data is obtained, which specifically includes:

[0059] Acquiring first torque data of the vehicle within a preset time;

[0060] By analyzing and calculating the first torque data, second torque data is obtained in which the ratio of the working time to the preset time in the first torque data is greater than or equal to a preset threshold;

[0061] The second torque data is used as target torque data.

[0062] For example, taking vehicle model X as an example, the working load of the vehicle in the last 14 days and the corresponding first input torque are obtained; according to the rated torque of the vehicle, several torque intervals are preset; the working time during which the first input torque falls into the torque interval within the preset time is calculated; when the ratio of the working time to the preset time is greater than a preset threshold, the second input torque data is obtained, and the second input torque data is used as the target torque data.

[0063] like Figure 2 As shown in , the vehicle is divided into six input torque intervals according to the rated torque; wherein, a negative torque indicates that the vehicle is in a reverse working condition, and a positive torque indicates that the vehicle is in a forward working condition; it can be understood that the six working conditions in this example indicate several working load working conditions with a higher running time of vehicle X, and also indicate several working conditions with higher user demand; for ease of understanding, the six working conditions are represented by D1, D2, D3, C1, C2, and C3 respectively.

[0064] It can be understood that the present application obtains the target torque data through calculation and analysis, so as to be able to accurately combine the user's usage needs in the subsequent optimization design and adjustment of the contact mark of the spiral bevel gear, thereby improving the service life of the spiral bevel gear.

[0065] In order to further improve the accuracy of the target torque data and facilitate the user's application experience, the first torque data of multiple vehicles within a preset time can be obtained through the cloud, so that the design of the spiral bevel gears of the same model can have higher stability and reliability, and have a longer service life.

[0066] In a specific embodiment, in combination Figure 4-Figure 6 As shown, step S2, constructing a flexible model of the drive axle assembly through mechanical simulation software, and analyzing the rigid characteristic data to obtain the spiral bevel gear misalignment data corresponding to the target torque data; the rigid characteristic data at least includes: the rigid characteristics of the drive axle housing, the reducer housing and each supporting gear bearing; wherein, the misalignment data at least includes: the misalignment amount △H of the first bevel gear, the misalignment amount △J of the second bevel gear, the offset amount △V of the two bevel shafts, and the angle △∑ of the two bevel gear shafts.

[0067] The flexible model of the drive axle assembly includes: main housings such as the drive axle housing, the reducer housing, as well as spiral bevel gears and various supporting bearings.

[0068] Specifically, the present application constructs a flexible model of the drive axle assembly through mechanical simulation software, and inputs the rigid matrix data of the drive axle housing, the reducer housing, and the supporting gear bearings for supporting the spiral bevel gear into the model to analyze the misalignment of the spiral bevel gear of the vehicle under the target torque data condition; Continuing with the previous example, combined with Figure 3-Figure 4 As shown in the figure, the misalignment of the spiral bevel gear under the working conditions of D1, D2, D3, C1, C2, and C3 is calculated to optimize the contact footprint of the spiral bevel gear for subsequent adjustment. Among them, the misalignment can be divided into three linear directions and one rotation direction according to the spatial position of the spiral bevel gear. The three linear directions are the axial misalignment of the first bevel gear (e.g., the active bevel gear) △H, the axial misalignment of the second bevel gear (e.g., the driven bevel gear) △J, and the offset of the two bevel gear shafts (e.g., the active and driven bevel gears) △V. The rotation direction is the angle △∑ between the two bevel gear shafts (e.g., the angle between the two axes of the active and driven bevel gears).

[0069] Step S3, based on the first gear data, the spiral bevel gear is calculated by design software to obtain the second gear data of the spiral bevel gear; wherein, the first gear data at least includes: the number of gear teeth, module, tooth height, and pitch cone angle. According to the first gear data, the macroscopic dimensions of the spiral bevel gear are constructed by using design software (such as KIMoS software), and the second gear data of the spiral bevel gear is obtained by analysis and calculation; the second gear data at least includes: gear pressure angle deviation, helix angle deviation, tooth length direction drum amount, tooth height direction drum amount, diagonal direction distortion amount and other data; it can be understood that the second gear data, as the microscopic parameter of the spiral bevel gear, determines the tooth surface shape, and the contact mark position of the spiral bevel gear at this time indicates the contact mark without load, that is, the theoretical installation state.

[0070] Optionally, in step S4, based on the first gear data and the second gear data, the misalignment data is input into the design software to calculate the first contact print data of the spiral bevel gear at the target torque data.

[0071] The present application calculates the first contact print data of the spiral bevel gear at the target torque data by inputting the misalignment data of step S2 into the design software, thereby being able to accurately obtain the contact print data of the spiral bevel gear under different loads.

[0072] like Figure 7 As shown, step S5, based on the offset between the first contact print data of the spiral bevel gear and the standard contact print, obtains the optimal contact print data by adjusting the second gear data, specifically including:

[0073] When the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, the second gear data is adjusted so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value;

[0074] The second gear data at least includes: gear pressure angle deviation, helix angle deviation, tooth length direction crown amount, tooth height direction crown amount, and diagonal direction distortion amount.

[0075] It can be understood that the standard contact imprint is used to characterize the theoretical design value of the spiral bevel gear under various working conditions under the target torque data; the preset standard value is used to characterize the ideal offset under different load conditions;

[0076] If the offset between the first contact mark data and the standard contact mark is less than the preset standard value, then the overall stability and reliability of the spiral bevel gear are the best and the service life is the longest.

[0077] Further, when the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, the second gear data is adjusted so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value, specifically including:

[0078] Based on the acquired second torque data, priority is defined; wherein the adjustment priority of the second torque data with a high proportion of working time is higher than that of the second torque data with a low proportion of working time;

[0079] According to the priority order, the preset standard value is matched, and the first contact mark data corresponding to the second torque data with a high priority is adjusted preferentially until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value.

[0080] Continuing with the previous example, based on the priority definition, the priority order of the six working condition adjustments is: D2>D3>D1>C3>C2>C1; among them, the preset standard value of D2>the preset standard value of D3>the preset standard value of D1>the preset standard value of C3>the preset standard value of C2>the preset standard value of C1; among them, the preset standard value of C1 is higher than the minimum value required by the design of the spiral bevel gear; the advantage of this design is that, in combination with the actual operating conditions, through the priority definition, the preset standard value is matched, and the contact marks of the spiral bevel gear are finely distributed, so as to ensure the overall stability and reliability of the spiral bevel gear and ensure that the overall use effect of the spiral bevel gear is optimized, for example, the D2 working condition with the highest proportion of working time is given priority, so that the service life of the spiral bevel gear is the longest.

[0081] Furthermore, the method of matching the preset standard value according to the priority order and preferentially adjusting the first contact mark data corresponding to the second torque data with a high priority until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value further includes:

[0082] When the offset between the first contact mark corresponding to the second torque data of the second priority after adjustment and the standard contact mark is less than the preset standard value, so that the offset between the first contact mark corresponding to the second torque data of the high priority and the standard contact mark increases or is greater than or equal to the preset standard value, then, the first contact mark corresponding to the second torque data of the second priority is readjusted by adjusting the third data; the third data at least includes: adjustment direction, adjustment amplitude and contact mark size;

[0083] When the offset between the first contact mark corresponding to the adjusted high-priority second torque data and the standard contact mark is less than the preset standard value, the offset between the first contact mark corresponding to the second high-priority torque data and the standard contact mark increases. In this case, the first contact mark corresponding to the high-priority second torque data is readjusted by adjusting the third data.

[0084] For example, when the adjustment of the secondary priority contact mark is completed, the deviation between the adjusted high priority contact mark and the standard mark increases or exceeds the preset standard value. In this case, it is necessary to adjust the third data to readjust the second gear data parameters to change the size of the offset; for example, change the adjustment direction or reduce the adjustment range of the second gear data or fine-tune the length and width of the contact mark.

[0085] It should be noted that the present application completes the adjustment of the second gear data by adjusting the direction, amplitude and contact mark size, and finally obtains an offset that meets the design requirements, thereby improving the adjustment efficiency of the contact mark of the spiral bevel gear and shortening the adjustment time.

[0086] It can be understood that the present application obtains target torque data by adopting a method for adjusting the contact footprint of the spiral bevel gear of the drive axle in combination with the vehicle operating conditions, and obtains the optimal contact footprint by finely allocating the contact footprint of the spiral bevel gear, thereby improving the reliability and stability of the spiral bevel gear, reducing the noise between gear transmissions, and extending the service life.

[0087] Figure 2 As shown, the present application provides a drive axle spiral bevel gear contact footprint adjustment system, comprising:

[0088] An acquisition module configured to acquire target torque data based on an analysis of a vehicle's operating conditions;

[0089] A simulation analysis module is configured to construct a flexible model of the drive axle assembly through mechanical simulation software, and analyze rigidity characteristic data to obtain spiral bevel gear misalignment data corresponding to target torque data; the rigidity characteristic data at least includes: rigidity characteristics of the drive axle housing, the reducer housing, and each supporting gear bearing;

[0090] a gear construction module configured to calculate the spiral bevel gear through design software based on the first gear data to obtain second gear data of the spiral bevel gear;

[0091] a calculation module configured to input the misalignment data into the design software based on the first gear data and the second gear data, and calculate the first contact imprint data of the spiral bevel gear at the target torque data;

[0092] The adjustment module is configured to obtain optimal contact print data by adjusting the second gear data based on the offset between the first contact print data of the spiral bevel gear and the standard contact print.

[0093] It is worth noting that although the present system only discloses an acquisition module, a simulation analysis module, a gear construction module, a calculation module, and an adjustment module, it does not mean that the present device is limited to the above-mentioned basic functional modules; what the present invention wants to express is that, based on the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions, that is to say, the present system is open rather than closed, and because the present embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the above-mentioned disclosed basic functional modules.

[0094] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0095] On the other hand, the present application provides a computer-readable storage medium storing a computer program executable by an electronic device, wherein when the computer program runs on the electronic device, the electronic device executes the steps of the method.

[0096] On the other hand, the present application provides an electronic device, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the method.

[0097] On the other hand, the present application provides a computer-readable storage medium storing a computer program executable by an electronic device, wherein when the computer program runs on the electronic device, the electronic device executes the steps of the method.

[0098] On the other hand, the present application provides a computer program product, comprising a computer program / instruction, which implements the method when executed by a processor.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting the contact mark of spiral bevel gear of a drive axle, characterized in that: The method comprises the following steps: S1: Obtain target torque data based on the vehicle's operating condition analysis; S2: constructing a flexible model of the drive axle assembly through mechanical simulation software, and analyzing the rigidity characteristic data to obtain the spiral bevel gear misalignment data corresponding to the target torque data; the rigidity characteristic data at least includes: the rigidity characteristics of the drive axle housing, the reducer housing and each supporting gear bearing; S3: Based on the first gear data, the spiral bevel gear is calculated by design software to obtain second gear data of the spiral bevel gear; S4: Based on the first gear data and the second gear data, the misalignment data is input into the design software to calculate the first contact imprint data of the spiral bevel gear at the target torque data; S5: Based on the offset between the first contact mark data of the spiral bevel gear and the standard contact mark, the optimal contact mark data is obtained by adjusting the second gear data.

2. The contact mark adjustment method of the drive axle spiral bevel gear according to claim 1, characterized in that: Step S1 specifically includes: Acquiring first torque data of the vehicle within a preset time; By analyzing and calculating the first torque data, second torque data is obtained in which the ratio of the working time to the preset time in the first torque data is greater than or equal to a preset threshold; The second torque data is used as target torque data.

3. The contact mark adjustment method of the drive axle spiral bevel gear according to claim 2, characterized in that: The misalignment data at least includes: a first bevel gear misalignment amount △H, a second bevel gear misalignment amount △J, an offset amount △V between two bevel gear shafts, and an angle △∑ between two bevel gear shafts.

4. The method for adjusting the contact mark of the spiral bevel gear of the drive axle according to claim 3, characterized in that: The step S5 specifically includes: When the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, the second gear data is adjusted so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value; The second gear data at least includes: gear pressure angle deviation, helix angle deviation, tooth length direction crown amount, tooth height direction crown amount, and diagonal direction distortion amount.

5. The contact mark adjustment method of the drive axle spiral bevel gear according to claim 4, characterized in that: When the offset between the first contact mark data of the spiral bevel gear and the standard contact mark is greater than or equal to a preset standard value, the second gear data is adjusted so that the offset between the adjusted first contact mark data and the standard contact mark is less than the preset standard value, specifically including: Based on the acquired second torque data, priority is defined; wherein the adjustment priority of the second torque data with a high proportion of working time is higher than that of the second torque data with a low proportion of working time; According to the priority order, the preset standard value is matched, and the first contact mark data corresponding to the second torque data with a high priority is adjusted preferentially until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value.

6. The method for adjusting the contact mark of the spiral bevel gear of the drive axle according to claim 5, characterized in that: The method of matching the preset standard value according to the priority order and preferentially adjusting the first contact mark data corresponding to the second torque data with a high priority until the offset between all the first contact mark data and the standard contact mark is less than the preset standard value further includes: When the offset between the first contact mark corresponding to the second torque data of the second priority after adjustment and the standard contact mark is less than the preset standard value, so that the offset between the first contact mark corresponding to the second torque data of the high priority and the standard contact mark increases or is greater than or equal to the preset standard value, then, the first contact mark corresponding to the second torque data of the second priority is readjusted by adjusting the third data; the third data at least includes: adjustment direction, adjustment amplitude and contact mark size; When the offset between the first contact mark corresponding to the adjusted high-priority second torque data and the standard contact mark is less than the preset standard value, the offset between the first contact mark corresponding to the second high-priority torque data and the standard contact mark increases. In this case, the first contact mark corresponding to the high-priority second torque data is readjusted by adjusting the third data.

7. A drive axle spiral bevel gear contact footprint adjustment system, characterized in that: include: An acquisition module configured to acquire target torque data based on an analysis of a vehicle's operating conditions; A simulation analysis module is configured to construct a flexible model of the drive axle assembly through mechanical simulation software, and analyze rigid characteristic data to obtain spiral bevel gear misalignment data corresponding to target torque data; The rigidity characteristic data at least includes: rigidity characteristics of the drive axle housing, the reducer housing and each supporting gear bearing; a gear construction module configured to calculate the spiral bevel gear through design software based on the first gear data to obtain second gear data of the spiral bevel gear; a calculation module configured to input the misalignment data into the design software based on the first gear data and the second gear data, and calculate the first contact imprint data of the spiral bevel gear at the target torque data; The adjustment module is configured to obtain optimal contact print data by adjusting the second gear data based on the offset between the first contact print data of the spiral bevel gear and the standard contact print.

8. An electronic device, characterized in that: include: A processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: It stores a computer program executable by an electronic device, and when the computer program runs on the electronic device, the electronic device executes the steps of the method described in any one of claims 1 to 6.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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