A gear mesh order coupling evaluation method, device, equipment and storage medium

Abstract

The application discloses a gear meshing order coupling evaluation method and device, equipment and a storage medium. The gear coupling evaluation method comprises the following steps: acquiring the number of teeth of a preset gear; calculating a first to-be-evaluated gear meshing order and a second to-be-evaluated gear meshing order according to the number of teeth of the preset gear; calculating an order coupling coefficient according to the first to-be-evaluated gear meshing order and the second to-be-evaluated gear meshing order; and judging the order coupling degree according to the range where the order coupling coefficient is located. The technical scheme provided in the embodiment of the application realizes the fast judgment of the gear coupling degree through the calculation of the coupling coefficient, thereby confirming whether the gear design is reasonable, and avoiding the noise caused by the gear meshing order coupling problem.

Description

Technical Field

[0001] This invention relates to the field of automotive gear noise technology, and in particular to a gear coupling evaluation method, apparatus, device, and storage medium. Background Technology

[0002] When a car is running, the order coupling problem of the meshing of two-stage reduction gears may cause low-frequency noise with fluctuating pitch, a phenomenon known as "beating" in acoustics. This can cause discomfort to passengers and affect the overall sound quality of the vehicle. Current technology lacks simple and quick calculation and evaluation methods to identify this problem during the product design phase, potentially introducing problematic elements into the vehicle's system, resulting in uncontrollable noise during operation. Summary of the Invention

[0003] This invention provides a gear coupling evaluation method, apparatus, device, and storage medium to achieve rapid evaluation of gear order coupling problems and determine gear fit based on the degree of order coupling.

[0004] According to one aspect of the present invention, a method for evaluating gear meshing order coupling is provided, comprising:

[0005] Obtain the number of teeth of a preset gear in the gear to be evaluated, wherein the gear to be evaluated includes a first gear to be evaluated and a second gear to be evaluated;

[0006] The meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated are calculated based on the number of teeth of the preset gear.

[0007] Calculate the order coupling coefficient based on the first gear meshing order and the second gear meshing order;

[0008] The degree of order coupling is determined based on the range of the order coupling coefficient.

[0009] Optionally, the gear to be evaluated is a wheel-side reduction axle gear, the first gear to be evaluated is a main reduction gear, and the second gear to be evaluated is a planetary gear; the preset gear includes: the driving teeth of the main reduction spiral bevel gear, the driven teeth of the main reduction spiral bevel gear, the sun gear of the wheel-side planetary gear, and the ring gear of the wheel-side planetary gear.

[0010] Optionally, the step of calculating the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated based on the number of teeth of the preset gear includes:

[0011] The meshing order of the first and second gears to be evaluated is calculated using the following formula:

[0012] n1 = x;

[0013] Wherein, n1 is the meshing order of the first gear to be evaluated, n2 is the meshing order of the second gear to be evaluated; x is the number of teeth of the driving teeth of the main reducing spiral bevel gear, y is the number of teeth of the driven teeth of the main reducing spiral bevel gear, a is the number of teeth of the sun gear of the planetary gear on the wheel rim, and b is the number of teeth of the ring gear of the planetary gear on the wheel rim.

[0014] Optionally, the calculation of the order coupling coefficient based on the first and second gear meshing orders includes:

[0015] The order coupling coefficient is calculated using the following formula:

[0016]

[0017] Wherein, ε is the order coupling coefficient.

[0018] Optionally, determining the degree of order coupling based on the range of the order coupling coefficient includes:

[0019] If the order coupling coefficient falls within the range of (k1 / k2)*(1-b)≤ε≤(k1 / k2)*(1+b), then the degree of coupling is unacceptable, and it is evaluated as the k2 order of the first gear to be evaluated being coupled with the k1 order of the second gear to be evaluated; where k1 and k2 are both 1, 2, or 3; 0 < b < 1; and ε is the order coupling coefficient.

[0020] If the order coupling coefficient is equal to k1 / k2, then the degree of coupling is unacceptable.

[0021] If the range of the order coupling coefficient is: (k1 / k2)*(1-2b)≤ε<(k1 / k2)*(1-b), or (k1 / k2)*(1+b)<ε≤(k1 / k2)*(1+2b), then the degree of coupling is considered acceptable.

[0022] If the order coupling coefficient falls within a different range, then the degree of coupling is considered to be completely acceptable.

[0023] Optionally, b can be 0.04.

[0024] Optionally, the gear meshing order coupling evaluation method further includes:

[0025] An evaluation grading table is created based on the values ​​of k1, k2, and b.

[0026] The step of determining the degree of order coupling based on the range of the order coupling coefficient includes: comparing the order coupling coefficient with the evaluation level table to determine the range of the order coupling coefficient.

[0027] According to another aspect of the present invention, an evaluation device for gear meshing order coupling is provided, comprising:

[0028] The acquisition module is configured to acquire the number of teeth of the preset gear.

[0029] The first calculation module is configured to calculate the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated based on the number of teeth of the preset gear.

[0030] The second calculation module is configured to calculate the order coupling coefficient based on the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated.

[0031] The judgment module is configured to determine the degree of order coupling based on the range of the order coupling coefficient.

[0032] According to another aspect of the present invention, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the evaluation method for gear meshing order coupling described above.

[0033] According to another aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the evaluation method for any of the gear meshing order couplings described above.

[0034] The technical solution of this invention calculates the coupling coefficient and determines the severity of the coupling problem between gears based on the degree of coupling corresponding to the coupling coefficient. This allows for the detection of coupling problems caused by gear design issues during the design phase, thereby optimizing the design of the number of gear teeth, resulting in better gear fit and avoiding the occurrence of low-frequency noise between gears due to coupling problems.

[0035] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart of an evaluation method for gear meshing order coupling provided by the present invention;

[0038] Figure 2 This is a module diagram of an evaluation device for gear meshing order coupling provided by the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Figure 1 A flowchart of an evaluation method for gear meshing order coupling provided in an embodiment of the present invention is shown below. Figure 1 The flowchart includes: Step S1, obtaining the number of teeth of the preset gear.

[0042] Specifically, the wheel-side reducer is the final stage of speed reduction and torque amplification in an automotive transmission system. It mainly consists of a sun gear, planetary gears, a ring gear, and a planetary carrier. Generally, the driving component, the sun gear, is connected to the half-shaft, the driven component, the planetary carrier, is connected to the wheel, and the ring gear is connected to the axle housing. The wheel-side reducer is used to increase the vehicle's driving force to meet or correct the force matching of the entire transmission system. During product development, the number of teeth on each gear stage is determined in the conceptual design phase, allowing for the calculation of the preset gear tooth count.

[0043] Step S2: Calculate the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated based on the number of teeth of the preset gear.

[0044] Specifically, the number of teeth on a gear is the gear meshing order. When there are multiple orders, the gear meshing order is the product of the order and the number of teeth on the gear. The first gear to be evaluated can be the main reduction gear, and the second gear to be evaluated can be a planetary gear.

[0045] Step S3: Calculate the order coupling coefficient based on the first gear meshing order and the second gear meshing order.

[0046] Step S4: Determine the degree of order coupling based on the range of the order coupling coefficient.

[0047] Specifically, the coupling coefficient directly corresponds to the degree of coupling. When the degree of coupling is severe, low-frequency noise will occur, and the sound will fluctuate, affecting the sound quality during operation.

[0048] By calculating the coupling coefficient and determining the degree of coupling corresponding to the coupling coefficient, the severity of the coupling problem between gears can be judged. This allows for the detection of coupling problems caused by gear design issues during the design phase, enabling the optimization of the gear tooth count and resulting in better gear fit. This also helps avoid the occurrence of low-frequency noise between gears caused by coupling problems.

[0049] Based on the above embodiments, optionally, taking the gear to be evaluated as a wheel-side reduction axle gear as an example, the preset gear includes: the driving gear of the main reduction spiral bevel gear, the driven gear of the main reduction spiral bevel gear, the sun gear of the wheel-side planetary gear, and the ring gear of the wheel-side planetary gear.

[0050] Specifically, the preset gears typically consist of two stages: the first stage is a spiral bevel gear reduction, and the second stage is a planetary gear reduction. The spiral bevel gear reduction includes the driving teeth of the main reducing spiral bevel gear and the driven teeth of the main reducing spiral bevel gear, while the planetary gear reduction includes the sun gear of the wheel-side planetary gears and the ring gear of the wheel-side planetary gears. The two stages of gear reduction together form a reduction bridge.

[0051] Based on the above embodiments, optionally, calculating the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated according to the preset number of teeth of the gear includes:

[0052] The meshing order of the first and second gears to be evaluated is calculated using the following formula:

[0053] n1 = x;

[0054] Where n1 is the first meshing order of the gear to be evaluated, n2 is the second meshing order of the gear to be evaluated; x is the number of teeth of the driving teeth of the main reducing spiral bevel gear, y is the number of teeth of the driven teeth of the main reducing spiral bevel gear, a is the number of teeth of the sun gear of the planetary gear on the wheel rim, and b is the number of teeth of the ring gear of the planetary gear on the wheel rim.

[0055] Specifically, x, y, a, and b are all obtained directly from the number of gears, a method that is simple and accurate to calculate.

[0056] Based on the above embodiments, optionally, the calculation of the order coupling coefficient according to the first gear meshing order and the second gear meshing order to be evaluated includes:

[0057] The order coupling coefficient is calculated using the following formula:

[0058]

[0059] Where ε is the order coupling coefficient. The degree of order coupling can be determined based on the range of the order coupling coefficient.

[0060] This formula can also be used to calculate the order coupling coefficient for the degree of order coupling between gears in a multi-stage reducer. Simply replace the calculation formula for the meshing order n2 of the second gear to be evaluated with the calculation formula corresponding to n2 at that level.

[0061] If the order coupling coefficient falls within the range of (k1 / k2)*(1-b)≤ε≤(k1 / k2)*(1+b), then the coupling degree is unacceptable, and it is evaluated as the k2 order of the first gear to be evaluated being coupled with the k1 order of the second gear to be evaluated. If the order coupling coefficient ε=k1 / k2, then the coupling degree is unacceptable, and it is evaluated as the k2 order of the first gear to be evaluated being completely overlapping with the k1 order of the second gear to be evaluated. Here, k1 and k2 take values ​​of 1, 2, or 3; 0<b<1, and is generally taken as 0.04; ε is the order coupling coefficient.

[0062] If the order coupling coefficient is in the range of (k1 / k2)*(1-2b)≤ε<(k1 / k2)*(1-b), or (k1 / k2)*(1+b)<ε≤(k1 / k2)*(1+2b), then the degree of coupling is considered acceptable.

[0063] If the order coupling coefficient falls within a different range, then the degree of coupling is considered to be completely acceptable.

[0064] For example, the unacceptable range of the coupling coefficients between the third order of the first gear to be evaluated and the first order of the second gear to be evaluated is:

[0065] (1 / 3)*(1-0.04)≤ε≤(1 / 3)*(1+0.04) or ε=1 / 3

[0066] The calculation yields: 0.32 ≤ ε ≤ 0.347

[0067] If the calculated order coupling coefficient falls within this range, it indicates that the coupling degree between the third order of the first gear to be evaluated and the first order of the second gear to be evaluated is unacceptable.

[0068] The acceptable range for the coupling coefficients between the third-order coupling coefficient of the first gear to be evaluated and the first-order coupling coefficient of the second gear to be evaluated is as follows:

[0069] (1 / 3)*(1-2*0.04)≤ε<(1 / 3)*(1-0.04), or (1 / 3)*(1+0.04)<ε≤(1 / 3)*(1+2*0.04)

[0070] The calculations yield the following: 0.307 ≤ ε < 0.32 or 0.347 < ε ≤ 0.36

[0071] If the calculated coupling coefficient falls within this range, it indicates that the coupling degree between the 3rd order of the first gear to be evaluated and the 1st order of the second gear to be evaluated is acceptable. For example, if the calculated coupling coefficient is 0.33, it falls exactly within the interval 0.32 ≤ ε ≤ 0.347. In this case, K1 is 1 and K2 is 3, corresponding to the 3rd order of the first gear to be evaluated and the 1st order of the second gear to be evaluated, and the coupling coefficient is within the unacceptable range. K1 and K2 can take higher values, but since higher orders have lower energy, they can be ignored in the calculation; therefore, only the 3rd order is considered at most.

[0072] Table 1 is an evaluation level table of gear meshing order coupling provided by the present invention. Referring to Table 1, optionally, the evaluation level table can be obtained by calculation based on the values ​​of k1, k2 and b, where the value of b is 0.04.

[0073]

[0074]

[0075] Specifically, the evaluation grading table is divided into seven intervals. Interval A indicates coupling between the 3rd order of the first gear under evaluation and the 1st order of the second gear under evaluation; Interval B indicates coupling between the 2nd order of the first gear under evaluation and the 1st order of the second gear under evaluation; Interval C indicates coupling between the 3rd order of the first gear under evaluation and the 2nd order of the second gear under evaluation; Interval D indicates coupling between the 1st order of the first gear under evaluation and the 1st order of the second gear under evaluation; Interval E indicates coupling between the 2nd order of the first gear under evaluation and the 3rd order of the second gear under evaluation; Interval F indicates coupling between the 1st order of the first gear under evaluation and the 2nd order of the second gear under evaluation; and Interval G indicates coupling between the 1st order of the first gear under evaluation and the 3rd order of the second gear under evaluation. The degree of coupling is divided into three levels: unacceptable, acceptable, and fully acceptable. When the coupling level is unacceptable, the coupling problem is serious and the number of gear teeth needs to be redesigned. When the coupling level is fully acceptable, it means there is no coupling problem and the gears are well matched. When the coupling level is acceptable, it means that although there is a coupling problem, the degree is small and does not affect normal operation. At this time, it can be judged according to the actual situation. If the requirements are more stringent, a redesign is required; otherwise, a redesign is not required.

[0076] The evaluation level table can directly correlate the calculated coupling coefficient with the degree of coupling, and determine the range of the order coupling coefficient, making the inspection of gear tooth number design more convenient and faster. After the design, the calculated coupling coefficient can be directly compared with the evaluation level table to obtain the degree of coupling, and the rationality of the gear tooth number design can be judged based on the degree of coupling, effectively preventing coupling problems caused by unreasonable gear tooth number.

[0077] For example, a main reducing spiral bevel gear has 28 teeth on the driven gear y, the sun gear of the planetary gear has 19 teeth on a, and the ring gear of the planetary gear has 56 teeth on b.

[0078] Substituting into the expression for the order coupling coefficient:

[0079]

[0080] By comparing the order coupling coefficient with the evaluation level table, ε falls within the interval F, indicating an unacceptable coupling level. Therefore, it can be concluded that the first order of the gear to be evaluated is coupled with the second order of the gear to be evaluated, and the coupling level is unacceptable, requiring a readjustment of the number of teeth. The evaluation level table covers the range of coupling coefficients between the first, second, and third orders of the gear to be evaluated and the first, second, and third orders of the gear to be evaluated. Compared to direct calculation, it is more intuitive and concise, directly mapping the coupling coefficient to unacceptable, acceptable, and fully acceptable coupling levels.

[0081] Figure 2 A module diagram of an evaluation device for gear meshing order coupling provided by the present invention is shown below. Figure 2 The system includes: an acquisition module 101, a first calculation module 102, a second calculation module 103, and a judgment module 104. The acquisition module 101 is configured to acquire the number of teeth of a preset gear. The first calculation module 102 is configured to calculate the meshing order of the first and second gears to be evaluated based on the number of teeth of the preset gear. The second calculation module 103 is configured to calculate the order coupling coefficient based on the meshing order of the first and second gears to be evaluated. The judgment module 104 is configured to judge the degree of order coupling based on the range of the order coupling coefficient.

[0082] Specifically, the acquisition module 101 acquires the number of teeth of the gear and calculates it through the first calculation module 102 and the second calculation module 103 to obtain the meshing order of the first gear to be evaluated, the meshing order of the second gear to be evaluated, and the order coupling coefficient. Finally, the judgment module 104 judges the degree of order coupling based on the order coupling coefficient.

[0083] The specific working principle and beneficial effects of the evaluation device for gear meshing order coupling can be found in the description of any of the above embodiments, and will not be repeated here.

[0084] According to another aspect of the present invention, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements any of the aforementioned gear meshing order coupling evaluation methods. The memory, as a computer-readable storage medium, can be used to store software programs, computer programs, and modules. The processor executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory, thereby implementing the aforementioned evaluation methods.

[0085] The memory may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on terminal usage. Furthermore, the memory may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory may further include memory remotely located relative to the processor, which can be connected to the device via a network. According to another aspect of the invention, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements an evaluation method for gear meshing order coupling as described above. Of course, the computer-executable instructions provided in the embodiments of the present invention are not limited to the methods described above, but can also perform related operations in the search methods provided in any embodiment of the present invention.

[0086] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, 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 computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0087] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0088] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for evaluating gear meshing order coupling, characterized in that, include: Obtain the number of teeth of a preset gear in the gear to be evaluated, wherein the gear to be evaluated includes a first gear to be evaluated and a second gear to be evaluated; The meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated are calculated based on the number of teeth of the preset gear. Calculate the order coupling coefficient based on the first gear meshing order and the second gear meshing order; The degree of order coupling is determined based on the range of the order coupling coefficients. The gear to be evaluated is a wheel-side reduction axle gear, the first gear to be evaluated is a main reduction gear, and the second gear to be evaluated is a planetary gear; the preset gear includes: the driving teeth of the main reduction spiral bevel gear, the driven teeth of the main reduction spiral bevel gear, the sun gear of the wheel-side planetary gear, and the ring gear of the wheel-side planetary gear; The calculation of the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated based on the number of teeth of the preset gear includes: The meshing order of the first and second gears to be evaluated is calculated using the following formula: ； ； in, The first gear to be evaluated is in the order of meshing. The second gear to be evaluated is the meshing order; The number of teeth on the driving teeth of the main reducing spiral bevel gear. The number of teeth on the driven teeth of the main reducing spiral bevel gear. Let be the number of teeth on the sun gear of the planetary gear on the wheel rim. The number of teeth on the ring gear of the planetary gear on the wheel rim; The calculation of the order coupling coefficient based on the first gear meshing order and the second gear meshing order includes: The order coupling coefficient is calculated using the following formula: ； in, The order coupling coefficient is mentioned above; The determination of the degree of order coupling based on the range of the order coupling coefficient includes: If the range of the order coupling coefficient is: (k1 / k2)*(1-b)≤ If the coupling degree is ≤ (k1 / k2)*(1+b), then the coupling degree is unacceptable, and it is evaluated as the coupling between the k2 order of the first gear to be evaluated and the k1 order of the second gear to be evaluated; where k1 and k2 are both 1, 2 or 3; 0 < b < 1. The order coupling coefficient is mentioned above; If the order coupling coefficient is equal to k1 / k2, then the degree of coupling is unacceptable; If the range of the order coupling coefficient is: (k1 / k2)*(1-2b)≤ < (k1 / k2)*(1-b), or (k1 / k2)*(1+b) < If the coupling degree is ≤ (k1 / k2)*(1+2b), then the degree of coupling is considered acceptable. If the order coupling coefficient falls within a different range, then the degree of coupling is considered to be completely acceptable.

2. The evaluation method for gear meshing order coupling according to claim 1, characterized in that, The value of b is 0.

04.

3. The evaluation method for gear meshing order coupling according to claim 1, characterized in that, The gear coupling evaluation method further includes: An evaluation grading table is created based on the values ​​of k1, k2, and b. The step of determining the degree of order coupling based on the range of the order coupling coefficient includes: comparing the order coupling coefficient with the evaluation level table to determine the range of the order coupling coefficient.

4. An evaluation device for gear meshing order coupling, characterized in that, The evaluation device for performing the gear meshing order coupling evaluation method according to any one of claims 1-3 includes: The acquisition module is configured to acquire the number of teeth of a preset gear; The first calculation module is configured to calculate the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated based on the number of teeth of the preset gear. The second calculation module is configured to calculate the order coupling coefficient based on the meshing order of the first gear to be evaluated and the meshing order of the second gear to be evaluated. The judgment module is configured to determine the degree of order coupling based on the range of the order coupling coefficient.

5. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the evaluation method for gear meshing order coupling as described in any one of claims 1-3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the evaluation method for gear meshing order coupling as described in any one of claims 1-3.

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