Gear shape modification method and device, electronic equipment and storage medium

Abstract

The invention discloses a gear shape modification method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring basic data for performing simulation analysis on a gear transmission system; performing nonlinear static analysis on the basic data through a finite element model of the gear transmission system to obtain a deformation quantitative index of the gear transmission system; converting the deformation quantitative index to obtain an initial value of a shape modification parameter of the gear transmission system; and the initial value is adjusted until a target condition corresponding to the gear transmission system is met, and a target value of the shape modification parameter is obtained and output. Therefore, blind parameter adjustment in the design process can be avoided, the dependence on the personal experience of engineers is reduced, and the design efficiency and accuracy are greatly improved. The initial value can be optimized and adjusted without manual repeated adjustment subsequently, a reasonable gear shape modification scheme is obtained, and therefore the design efficiency can be further improved, and scientificity, accuracy and efficiency of gear shape modification design are achieved.

Description

Technical Field

[0001] This application relates to the field of computer technology, and in particular to a method, apparatus, electronic device, and storage medium for modifying the shape of a gear. Background Technology

[0002] In gear transmission systems, due to the combined effects of manufacturing errors, assembly errors, and elastic deformation of the system under load, the gear meshing position often deviates from the ideal state, leading to meshing misalignment and uneven load distribution (i.e., off-center loading). These phenomena are the root causes of fatigue failures such as gear squealing, noise, vibration, noise vibration harshness (NVH), pitting, and tooth breakage.

[0003] Therefore, in practical applications, techniques such as drum-shaped profile modification or tooth tip edge modification can be used to compensate for these errors and deformations by making minor adjustments to the gear geometry, thereby improving tooth surface contact and reducing transmission shock. However, traditional profile modification schemes rely heavily on the personal experience of design engineers, resulting in generally low accuracy and efficiency in the design process. Summary of the Invention

[0004] This application provides a method, apparatus, electronic device, and storage medium for modifying gear shapes to improve the scientific rigor, accuracy, and efficiency of the design process.

[0005] In a first aspect, embodiments of this application provide a method for modifying the shape of a gear, comprising:

[0006] Obtain the basic data for simulation analysis of the gear transmission system;

[0007] Nonlinear static analysis of the basic data is performed using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system.

[0008] The deformation quantification index is converted to obtain the initial values ​​of the shape modification parameters of the gear transmission system;

[0009] The initial value is adjusted until the target condition corresponding to the gear transmission system is met, at which point the target value of the shape modification parameter is obtained and output.

[0010] Optionally, the deformation quantification index is converted to obtain the initial values ​​of the shape modification parameters of the gear transmission system, including:

[0011] Obtain a first quantization relationship model, the first quantization relationship model including a quantization relationship describing the deformation quantization index and the shape modification parameter corresponding to the deformation quantization index;

[0012] The deformation quantification index is analyzed based on the first quantification relationship model to obtain the initial value.

[0013] Optionally, the deformation quantification index includes tooth-direction off-load slope and tooth profile off-load slope. The tooth-direction off-load slope is used to describe the contact height difference at both ends of the effective tooth width of the gear pair caused by the load deformation of the gear transmission system. The tooth profile off-load slope is used to describe the contact path deviation of the gear pair on the effective tooth profile caused by the load deformation of the gear transmission system architecture.

[0014] The process of obtaining the first quantitative relationship model includes:

[0015] Determine the shape modification parameters corresponding to the tooth eccentricity and the tooth profile eccentricity, and the compensation object corresponding to the shape modification parameters;

[0016] Simulation verification was performed based on the tooth eccentric loading slope, the tooth profile eccentric loading slope, the shape modification parameters, and the compensation object to obtain the first quantification relationship model.

[0017] Optionally, the method further includes:

[0018] Obtain a database of shape modification parameter values, the database including historical target values ​​of the shape modification parameters;

[0019] The first quantization relationship model is optimized based on the value database to obtain the second quantization relationship model.

[0020] Optionally, adjusting the initial value until the target condition corresponding to the gear transmission system is met, and then obtaining and outputting the target value of the shape modification parameter, includes:

[0021] The initial values ​​are analyzed to obtain the quantitative evaluation index;

[0022] The adjustment strategy and adjustment range of the shape modification parameters are determined based on the quantitative evaluation indicators.

[0023] The initial value is adjusted based on the adjustment strategy and the adjustment range until the target value is obtained when the target condition is met.

[0024] Optionally, the step of analyzing the initial value to obtain the quantitative evaluation index includes:

[0025] The initial values ​​are substituted into the gear analysis tool, and the simulation is run under multiple load conditions using the gear analysis tool to obtain the transmission error and contact pattern of the gear transmission system as the quantitative evaluation index.

[0026] Optionally, the step of adjusting the initial value based on the adjustment strategy and the adjustment range until the target condition corresponding to the gear transmission system is met, and then obtaining the target value of the shape modification parameter, includes:

[0027] The initial value is adjusted based on the adjustment strategy and the adjustment range to obtain an intermediate value of the shape modification parameter;

[0028] Determine the intermediate quantitative evaluation index of the gear transmission system corresponding to the intermediate value;

[0029] If the intermediate quantitative evaluation index does not meet the target condition, the intermediate value is adjusted until the target condition is met and the target value is obtained.

[0030] Secondly, embodiments of this application provide a gear shape modification device, comprising:

[0031] The data acquisition module is used to acquire the basic data for simulation analysis of the gear transmission system;

[0032] The data analysis module is used to perform nonlinear static analysis on the basic data using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system.

[0033] The index conversion module is used to convert the deformation quantification index to obtain the initial value of the shape modification parameter of the gear transmission system;

[0034] The parameter adjustment module is used to adjust the initial value until the target value of the shape modification parameter is obtained and output when the target condition corresponding to the gear transmission system is met.

[0035] Thirdly, embodiments of this application provide an electronic device, the device including: a processor, a memory, and a system bus;

[0036] The processor and the memory are connected via the system bus;

[0037] The memory is used to store a program, the program including instructions that, when executed by the processor, cause the processor to perform any of the implementation steps of the gear shape modification method described above.

[0038] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements any of the implementation steps of the gear shape modification method described above.

[0039] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0040] In this embodiment, after obtaining the basic data for simulation analysis of the gear transmission system, nonlinear static analysis can be performed on the basic data using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system. Then, the deformation quantification index is converted to obtain the initial value of the shape modification parameter of the gear transmission system. The initial value is adjusted until the target condition corresponding to the gear transmission system is met, at which point the target value of the shape modification parameter is obtained and output. It is evident that nonlinear static analysis using the finite element model of the gear transmission system can accurately obtain the deformation quantification index of the gear under load. By converting these deformation quantification indices into the corresponding initial values ​​of the shape modification parameter, a mathematical correlation between the actual gear deformation and the shape modification parameter can be established, avoiding blind parameter tuning during the design process, reducing reliance on the engineer's personal experience, and significantly improving design efficiency and accuracy. Furthermore, subsequent optimization of the initial value can be achieved without repeated manual adjustments to obtain a reasonable gear shape modification scheme, thereby further improving design efficiency and realizing the scientific, accurate, and efficient nature of gear modification design. Attached Figure Description

[0041] Figure 1 A flowchart illustrating a method for modifying the shape of a gear, as provided in an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of a gear shape modification device provided in an embodiment of this application. Detailed Implementation

[0043] As mentioned earlier, traditional reshaping solutions rely heavily on the personal experience of design engineers, leading to significant uncertainties in the design process, unstable design quality, and low design efficiency.

[0044] Specifically, in traditional approaches, design engineers typically begin with a preliminary design based on macroscopic geometric parameters. They then pre-determine initial values ​​for a set of shape modification parameters, such as the amount of bulging or edge trimming, based on their experience. Next, these parameters are input into gear simulation software such as Romax (a transmission system simulation software) or MASTA (a transmission system design and analysis software) to simulate and verify single or multiple operating conditions. If the simulation results do not meet expectations, the engineer manually adjusts the initial values ​​and repeats the simulation. This process iterates until a relatively satisfactory design is obtained. It is evident that this method essentially relies on manual judgment, with a linear and open process, lacking systematic theoretical guidance and predictive capabilities.

[0045] Therefore, the shape modification process relies on the designer's experience and intuition, leading to significant uncertainty in the design process. Different engineers may arrive at drastically different solutions, making it difficult to guarantee design quality. Furthermore, the process involves long iteration cycles and high trial-and-error costs. In addition, this method fails to accurately quantify system deformation, lacking an effective correlation between the shape modification design and the root cause of deformation. Shape modification solutions often only alleviate surface problems, failing to fundamentally compensate for the structural deformation causing eccentric loading. The effects are limited and unstable under different operating conditions, resulting in generally low design accuracy and efficiency.

[0046] Based on this, in order to solve the above problems, this application provides a method for modifying the shape of a gear, including: after obtaining the basic data for simulating and analyzing the gear transmission system, the basic data can first be subjected to nonlinear static analysis through the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system; then, the deformation quantification index is converted to obtain the initial value of the shape modification parameter of the gear transmission system, and the initial value is adjusted until the target condition corresponding to the gear transmission system is met to obtain the target value of the shape modification parameter and output it.

[0047] It is evident that nonlinear static analysis using the finite element model of the gear transmission system can accurately obtain the quantitative indicators of gear deformation under load. These quantitative deformation indicators can then be converted into initial values ​​for corresponding shape modification parameters, establishing a mathematical correlation between the actual gear deformation and these parameters. This avoids blind parameter tuning during the design process, reduces reliance on engineers' personal experience, and significantly improves design efficiency and accuracy. Furthermore, subsequent optimization of the initial values ​​can be performed without repeated manual adjustments to obtain a reasonable gear shape modification scheme, further enhancing design efficiency and achieving scientific, accurate, and efficient gear modification design.

[0048] It should be noted that the implementation subject of the gear shape modification method in this application is not limited. For example, the gear shape modification method in this application can be applied to data processing devices such as servers or terminal devices. The server can be a standalone server, a cluster server, or a cloud server. The terminal device can be an electronic device such as a smartphone, computer, personal digital assistant (PDA), or tablet computer.

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] Figure 1 A flowchart illustrating a method for modifying the shape of a gear according to an embodiment of this application. (In conjunction with...) Figure 1 As shown, the gear shape modification method provided in this application embodiment may include the following steps S101-S104.

[0051] S101: Obtain the basic data for simulation analysis of the gear transmission system.

[0052] In this embodiment, the basic data may include a three-dimensional model of the gear transmission system, material mechanical properties, bearing stiffness parameters, and target load conditions. For example, the three-dimensional model may include complete three-dimensional digital models corresponding to the gears, shafts, bearings, and housing. Material mechanical properties may include elastic modulus and Poisson's ratio, etc. The target load condition is, for example, a rated torque of 52.5 Nm at 30% forward drive.

[0053] S102: Nonlinear static analysis of the basic data is performed using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system.

[0054] Deformation quantification indexes are indicators used to measure the deformation of gear transmission systems. In practical applications, deformation quantification indexes may include comprehensive misalignment (M_eff), tooth profile eccentricity slope (ΔS_v), and tooth profile eccentricity slope (ΔS_r), etc.

[0055] Among them, the comprehensive misalignment is used to evaluate the degree to which the system rigidity is satisfied. Generally, it is required that the misalignment of the first-stage gear does not exceed 1.1 times the effective tooth width, and the misalignment of the second-stage gear does not exceed 1.2 times the effective meshing tooth width.

[0056] The tooth-direction eccentricity slope describes the difference in contact height between the two ends of the effective tooth width (B) of a gear pair due to the deformation of the gear transmission system under load. It can quantify the degree of eccentricity in the tooth width direction. Its unit is micrometers (μm), for example, ΔS_v = 18μm.

[0057] Tooth profile offset slope describes the contact path deviation of a gear pair on the effective tooth profile (from the meshing start point SAP to the end point EAP) caused by the load deformation of the gear transmission system architecture. Its unit is also micrometers (μm), with positive values ​​indicating offset towards the tooth tip, for example, ΔS_r = +12μm.

[0058] Based on this, firstly, a finite element model including all key components of the gear transmission system can be established. Then, nonlinear static analysis is performed on the aforementioned basic data using this finite element model. Under specified load conditions, the overall structural deformation of the entire gear transmission system is accurately analyzed, thereby obtaining quantitative deformation indices.

[0059] In this way, by using deformation quantification indicators such as tooth eccentricity and tooth profile eccentricity, the influence of system-specific load deformation on gear meshing can be accurately located. Subsequently, as a precise quantitative input, it can provide a basis for gear modification, avoid blind parameter adjustment during the design process, and greatly improve design efficiency and accuracy.

[0060] S103: Convert the deformation quantification index to obtain the initial values ​​of the shape modification parameters of the gear transmission system.

[0061] In this application, by transforming the aforementioned deformation quantification indicators into precise and implementable initial values ​​for shape modification parameters, a leapfrog upgrade from qualitative judgment to quantitative calculation in shape modification design can be achieved, providing a scientific and efficient basis for subsequent shape modification optimization. For ease of understanding, a possible implementation method is described below.

[0062] As one possible implementation, in the process of obtaining the initial value of the shape modification parameter, a first quantization relationship model can first be obtained, which includes a quantization relationship describing the deformation quantization index and the shape modification parameter corresponding to the deformation quantization index.

[0063] In practical implementation, we can first determine the shape modification parameters corresponding to the tooth eccentric loading slope and the tooth profile eccentric loading slope, as well as the compensation objects corresponding to the shape modification parameters. Then, we can perform simulation verification based on the tooth eccentric loading slope, tooth profile eccentric loading slope, shape modification parameters, and compensation objects to obtain the first quantitative relationship model.

[0064] In this way, for different manifestations of deformation under load in gear transmission systems, such as gear shaft bending and tilting, system parallelism error, or tooth profile eccentricity, by establishing a first quantitative relationship model that has been verified by simulation, the initial value of each shape modification parameter can be accurately matched with the corresponding deformation compensation requirements, thereby reducing the possibility of insufficient or excessive shaping.

[0065] To facilitate understanding, Table 1 is used as an example to introduce the specific shape modification parameters, compensation objects, first quantization relationship model and corresponding calculation examples. ΔS_v is used as an example of 18μm, and ΔS_r is used as an example of +12μm.

[0066] Table 1

[0067]

[0068] In this way, after obtaining the first quantitative relationship model as shown in Table 1 above, the deformation quantitative index can be analyzed based on the first quantitative relationship model to obtain the initial value.

[0069] S104: Adjust the initial value until the target value of the shape modification parameter is obtained and output when the target condition corresponding to the gear transmission system is met.

[0070] The target conditions for a gear transmission system refer to the conditions used to quantitatively evaluate the quality of the gear transmission system. For example, target conditions could be the target corresponding to transmission error (TE) or the target corresponding to contact pattern.

[0071] Transmission error refers to the difference between the actual output angular displacement and the theoretical output angular displacement of a gear pair when transmitting motion. It is the fundamental excitation source causing gear vibration and noise. Accordingly, the target for transmission error is a Peak-to-Peak value ≤ 0.4 μm under the corresponding load condition, and the curve should be smooth without abrupt changes.

[0072] Contact spots are a visual representation of the contact area on the tooth surface during gear meshing. They directly reflect the uniformity of load distribution on the tooth surface, and their shape and location are key criteria for judging whether shape modification parameters are reasonable. Accordingly, the specific target for this contact spot is that the contact area is located within 80% of the middle of the tooth surface, the area ratio of the contact spot is >60%, and there is no edge contact.

[0073] Based on this, in the specific implementation of the initial value adjustment process, the initial value can first be analyzed to obtain quantitative evaluation indicators.

[0074] Analyzing the initial values ​​involves substituting them into a gear analysis tool and running simulations under multiple load conditions to obtain the transmission error and contact pattern of the gear transmission system as quantitative evaluation indicators. For example, the multiple load conditions could be 10%, 50%, and 100% of the rated torque, etc. Therefore, the transmission error and contact pattern are evaluated by simulating these conditions using a gear analysis tool.

[0075] Next, the adjustment strategy and adjustment range of the shape modification parameters are determined based on the quantitative evaluation indicators. For ease of understanding, the corresponding adjustment strategies and adjustment ranges are introduced below using Tables 2-1 and 2-2 as examples.

[0076] Table 2-1

[0077]

[0078] Table 2-2

[0079]

[0080] Combining Tables 2-1 and 2-2 above, the quantitative evaluation indicators can indicate the current problems in the gear transmission system and reflect the corresponding physical problems and root causes. Accordingly, the adjustment strategy and adjustment range of the shape modification parameters can be determined based on the above information. Thus, the shape modification process is based on compensating for the physical problems and root causes reflected by the system deformation. Therefore, the modification effect is more fundamental, can simultaneously take into account performance under multiple operating conditions, and significantly improves the NVH performance and robustness of the gear pair.

[0081] In this way, the initial value can be adjusted based on the adjustment strategy and adjustment range until the target value is obtained when the target conditions are met.

[0082] In practice, adjusting the initial value may not meet the target conditions on the first attempt. Therefore, multiple rounds of directional fine-tuning can be used to output the final target value. That is, the initial value can be adjusted based on the adjustment strategy and magnitude to obtain intermediate values ​​for the shape modification parameters. Then, the intermediate quantitative evaluation index of the gear transmission system corresponding to the intermediate value is determined. If the intermediate quantitative evaluation index does not meet the target conditions, the intermediate value is adjusted again until the target conditions are met, thus obtaining the target value. This provides clear and repeatable calculation steps and fine-tuning logic, significantly reducing reliance on the personal experience of senior engineers, thereby further improving design efficiency and achieving scientific, accurate, and efficient gear profile modification design.

[0083] Furthermore, the target values ​​can be output in various forms. For example, a parameter summary table can be used to summarize the target values ​​of each shape modification parameter before outputting them. Alternatively, a point cloud map of quantitative evaluation indicators can be used to compare the transmission error and contact spots under various load conditions to obtain a comparison report before outputting it.

[0084] Furthermore, considering the potential differences between the simulation model and the actual working conditions, the first quantitative relationship model may still have room for optimization. Therefore, in this embodiment, measured data of the entire life cycle of the gear transmission system can be collected to iteratively optimize the first quantitative relationship model in reverse, so as to continuously upgrade and optimize the first quantitative relationship model and improve the accuracy and scientific nature of gear modification design.

[0085] Based on this, firstly, a database of shape modification parameter values ​​can be obtained, including historical target values ​​for the shape modification parameters. Next, the first quantization relationship model is optimized based on this database to obtain the second quantization relationship model.

[0086] It should be noted that the aforementioned historical target value refers to the target value stored during the historical shaping process. Therefore, after obtaining the target value in step S104, the target value can be stored in the value database to optimize the first quantization relation model using the latest target value.

[0087] Based on the relevant content of steps S101-S104 above, it can be seen that in this embodiment, after obtaining the basic data for simulation analysis of the gear transmission system, nonlinear static analysis can be performed on the basic data using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system. Then, the deformation quantification index is converted to obtain the initial value of the shape modification parameter of the gear transmission system, and the initial value is adjusted until the target condition corresponding to the gear transmission system is met, at which point the target value of the shape modification parameter is obtained and output. It is evident that nonlinear static analysis using the finite element model of the gear transmission system can accurately obtain the deformation quantification index of the gear under load. In this way, converting these deformation quantification indices into the corresponding initial values ​​of the shape modification parameter can realize the mathematical correlation between the actual deformation of the gear and the shape modification parameter, avoiding blind parameter adjustment during the design process, reducing reliance on the engineer's personal experience, and significantly improving design efficiency and accuracy. Furthermore, subsequent optimization of the initial value can be achieved without repeated manual adjustments to obtain a reasonable gear shape modification scheme, thereby further improving design efficiency and realizing the scientific, accurate, and efficient design of gear modification.

[0088] Based on the gear shape modification method provided in the above embodiments, this application can also provide a gear shape modification device. The gear shape modification device will be described below with reference to embodiments and accompanying drawings.

[0089] Figure 2 This is a schematic diagram of a gear shape modification device provided in an embodiment of this application. (In conjunction with...) Figure 2 As shown, the gear shape modification device 200 provided in this application embodiment includes:

[0090] The data acquisition module 201 is used to acquire basic data for simulation analysis of the gear transmission system;

[0091] Data analysis module 202 is used to perform nonlinear static analysis on the basic data through the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system.

[0092] The index conversion module 203 is used to convert the deformation quantification index to obtain the initial value of the shape modification parameter of the gear transmission system;

[0093] The parameter adjustment module 204 is used to adjust the initial value until the target value of the shape modification parameter is obtained and output when the target condition corresponding to the gear transmission system is met.

[0094] Optionally, the indicator conversion module 203 includes:

[0095] The model acquisition module is used to acquire a first quantization relationship model, which includes a quantization relationship describing the deformation quantization index and the shape modification parameter corresponding to the deformation quantization index.

[0096] The indicator analysis module is used to analyze the deformed quantitative indicator based on the first quantitative relationship model to obtain the initial value.

[0097] Optionally, the deformation quantification index includes tooth-direction off-load slope and tooth profile off-load slope. The tooth-direction off-load slope is used to describe the contact height difference at both ends of the effective tooth width of the gear pair caused by the load deformation of the gear transmission system. The tooth profile off-load slope is used to describe the contact path deviation of the gear pair on the effective tooth profile caused by the load deformation of the gear transmission system architecture.

[0098] The model acquisition module is specifically used for:

[0099] Determine the shape modification parameters corresponding to the tooth eccentricity and the tooth profile eccentricity, and the compensation object corresponding to the shape modification parameters;

[0100] Simulation verification was performed based on the tooth eccentric loading slope, the tooth profile eccentric loading slope, the shape modification parameters, and the compensation object to obtain the first quantification relationship model.

[0101] Optionally, the gear shape modification device 200 further includes:

[0102] The database acquisition module is used to acquire a database of values ​​for shape modification parameters, the value data including historical target values ​​of the shape modification parameters;

[0103] The model optimization module is used to optimize the first quantized relation model based on the value database to obtain a second quantized relation model.

[0104] Optionally, the parameter adjustment module 204 specifically includes:

[0105] The parameter analysis module is used to analyze the initial values ​​to obtain the quantitative evaluation index;

[0106] The information determination module is used to determine the adjustment strategy and adjustment range of the shape modification parameters based on the quantitative evaluation index;

[0107] The parameter adjustment submodule is used to adjust the initial value based on the adjustment strategy and the adjustment range until the target value is obtained when the target condition is met.

[0108] Optionally, the parameter analysis module is specifically used for:

[0109] The initial values ​​are substituted into the gear analysis tool, and the simulation is run under multiple load conditions using the gear analysis tool to obtain the transmission error and contact pattern of the gear transmission system as the quantitative evaluation index.

[0110] Optionally, the parameter adjustment submodule is specifically used for:

[0111] The initial value is adjusted based on the adjustment strategy and the adjustment range to obtain an intermediate value of the shape modification parameter;

[0112] Determine the intermediate quantitative evaluation index of the gear transmission system corresponding to the intermediate value;

[0113] If the intermediate quantitative evaluation index does not meet the target condition, the intermediate value is adjusted until the target condition is met and the target value is obtained.

[0114] Furthermore, embodiments of this application also provide an electronic device, including: a processor, a memory, and a system bus;

[0115] The processor and the memory are connected via the system bus;

[0116] The memory is used to store one or more programs, the one or more programs including instructions that, when executed by the processor, cause the processor to perform any of the implementation steps of the gear shape modification method described above.

[0117] Furthermore, embodiments of this application also provide a computer-readable storage medium storing instructions that, when executed on an electronic device, cause any of the above-described steps of the gear shape modification method to be implemented.

[0118] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application. It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on describing the differences from other embodiments. The same or similar parts between the various embodiments can be referred to mutually.

[0119] The system disclosed in the embodiments is described simply because it corresponds to the method disclosed in the embodiments; relevant details can be found in the method section.

[0120] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0121] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for modifying the shape of a gear, characterized in that, include: Obtain the basic data for simulation analysis of the gear transmission system; Nonlinear static analysis of the basic data is performed using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system. The deformation quantification index is converted to obtain the initial values ​​of the shape modification parameters of the gear transmission system; The initial value is adjusted until the target condition corresponding to the gear transmission system is met, at which point the target value of the shape modification parameter is obtained and output.

2. The method for modifying the gear shape according to claim 1, characterized in that, The deformation quantification index is converted to obtain the initial values ​​of the shape modification parameters of the gear transmission system, including: Obtain a first quantization relationship model, the first quantization relationship model including a quantization relationship describing the deformation quantization index and the shape modification parameter corresponding to the deformation quantization index; The deformation quantification index is analyzed based on the first quantification relationship model to obtain the initial value.

3. The method for modifying the gear shape according to claim 2, characterized in that, The deformation quantification index includes tooth-direction off-load slope and tooth profile off-load slope. The tooth-direction off-load slope is used to describe the contact height difference at both ends of the effective tooth width of the gear pair caused by the load deformation of the gear transmission system. The tooth profile off-load slope is used to describe the contact path deviation of the gear pair on the effective tooth profile caused by the load deformation of the gear transmission system architecture. The process of obtaining the first quantitative relationship model includes: Determine the shape modification parameters corresponding to the tooth eccentricity and the tooth profile eccentricity, and the compensation object corresponding to the shape modification parameters; Simulation verification was performed based on the tooth eccentric loading slope, the tooth profile eccentric loading slope, the shape modification parameters, and the compensation object to obtain the first quantification relationship model.

4. The method for modifying the gear shape according to claim 2, characterized in that, The method further includes: Obtain a database of shape modification parameter values, the database including historical target values ​​of the shape modification parameters; The first quantization relationship model is optimized based on the value database to obtain the second quantization relationship model.

5. The method for modifying the gear shape according to any one of claims 1 to 4, characterized in that, The step of adjusting the initial value until the target condition corresponding to the gear transmission system is met, and then obtaining and outputting the target value of the shape modification parameter, includes: The initial values ​​are analyzed to obtain the quantitative evaluation index; The adjustment strategy and adjustment range of the shape modification parameters are determined based on the quantitative evaluation indicators. The initial value is adjusted based on the adjustment strategy and the adjustment range until the target value is obtained when the target condition is met.

6. The method for modifying the gear shape according to claim 5, characterized in that, The process of analyzing the initial values ​​to obtain the quantitative evaluation index includes: The initial values ​​are substituted into the gear analysis tool, and the simulation is run under multiple load conditions using the gear analysis tool to obtain the transmission error and contact pattern of the gear transmission system as the quantitative evaluation index.

7. The method for modifying the gear shape according to claim 6, characterized in that, The process of adjusting the initial value based on the adjustment strategy and the adjustment range until the target condition corresponding to the gear transmission system is met, and then obtaining the target value of the shape modification parameter, includes: The initial value is adjusted based on the adjustment strategy and the adjustment range to obtain an intermediate value of the shape modification parameter; Determine the intermediate quantitative evaluation index of the gear transmission system corresponding to the intermediate value; If the intermediate quantitative evaluation index does not meet the target condition, the intermediate value is adjusted until the target condition is met and the target value is obtained.

8. A gear shape modification device, characterized in that, include: The data acquisition module is used to acquire the basic data for simulation analysis of the gear transmission system; The data analysis module is used to perform nonlinear static analysis on the basic data using the finite element model of the gear transmission system to obtain the deformation quantification index of the gear transmission system. The index conversion module is used to convert the deformation quantification index to obtain the initial value of the shape modification parameter of the gear transmission system; The parameter adjustment module is used to adjust the initial value until the target value of the shape modification parameter is obtained and output when the target condition corresponding to the gear transmission system is met.

9. An electronic device, characterized in that, The device includes: a processor, a memory, and a system bus; The processor and the memory are connected via the system bus; The memory is used to store a program, the program including instructions that, when executed by the processor, cause the processor to perform the steps of the gear shape modification method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the gear shape modification method as described in any one of claims 1 to 7.

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