A fatigue life calculation method and device for ceramic ball hybrid bearings

Abstract

The present invention relates to the technical field of bearing life calculation, and discloses a fatigue life calculation method and device for a ceramic ball hybrid bearing. The method calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing. If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average remaining life correction factor of the target ceramic ball hybrid bearing, and the remaining life temperature correction factor of the target ceramic ball hybrid bearing. Because the present invention takes into account the ambient temperature of the target ceramic ball hybrid bearing, it can accurately calculate the remaining fatigue life of the target ceramic ball hybrid bearing and meet practical needs.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing life calculation, and in particular to a method and device for calculating the fatigue life of a ceramic ball hybrid bearing. Background Art

[0002] Rolling bearings are key components in modern mechanical equipment, and their performance directly impacts their operational efficiency and stability. Silicon nitride ceramic bearing balls are widely used in rolling bearings due to their high hardness, low coefficient of friction, and excellent wear resistance. However, in practical applications, silicon nitride often faces a complex mechanical environment and the influence of multiple factors when subjected to loading, making accurate calculation of its load state a technical challenge.

[0003] Currently, calculations of the forces acting on silicon nitride hybrid ceramic bearing balls in rolling bearings primarily rely on traditional mechanical modeling. These methods, often based on theories of elasticity and contact mechanics, use simplified mathematical models to predict the forces acting on the ceramic bearing balls. However, with the advancement of technology, modern machinery places increasingly stringent performance demands on rolling bearings, especially in extreme high-temperature operating environments. These high-temperature operating environments make traditional fatigue life calculation methods for hybrid ceramic bearings inaccurate and difficult to meet practical requirements. Summary of the Invention

[0004] In view of this, the present invention provides a fatigue life calculation method, device and computer equipment for ceramic ball hybrid bearings to solve the problem that the high-temperature working environment makes the fatigue life calculation method of traditional ceramic ball hybrid bearings inaccurate and difficult to meet actual needs.

[0005] According to a first aspect, an embodiment of the present disclosure provides a method for calculating the fatigue life of a ceramic ball hybrid bearing, the method comprising:

[0006] Obtain the external load on the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls;

[0007] Based on the external load on the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls, the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing is calculated;

[0008] Obtaining the bearing type of the target ceramic ball hybrid bearing, the average correction factor of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction factor of the remaining life of the target ceramic ball hybrid bearing;

[0009] Based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated;

[0010] If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction factor of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction factor of the remaining life of the target ceramic ball hybrid bearing.

[0011] In an optional embodiment, the target ceramic ball hybrid bearing belongs to the following bearing types: thrust ball hybrid ceramic bearing, ceramic bearing ball and test plate, angular contact hybrid ceramic bearing, deep groove ball hybrid ceramic bearing.

[0012] In an optional embodiment, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, including:

[0013] If the target ceramic ball hybrid bearing belongs to a thrust ball hybrid ceramic bearing, obtain the projected contact long radius and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing;

[0014] Based on the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and bearing ring of the thrust ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and bearing ring of the thrust ball hybrid ceramic bearing, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

[0015] In an optional embodiment, calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing further includes:

[0016] If the target ceramic ball hybrid bearing belongs to a ceramic bearing ball and an experimental plate, obtain the second kind elliptic integral parameters of the ceramic bearing ball and the experimental plate, the number of ceramic bearing balls, the bearing radius of the ceramic bearing ball, and the Poisson's ratio parameters;

[0017] Based on the second kind of elliptic integral parameters of the ceramic bearing balls and the experimental plate, the number of ceramic bearing balls, the bearing radius of the ceramic bearing balls, and the Poisson's ratio parameters, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

[0018] In an optional embodiment, calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing further includes:

[0019] If the target ceramic ball hybrid bearing is an angular contact hybrid ceramic bearing, obtain the projected contact long radius between any ceramic bearing ball of the angular contact hybrid ceramic bearing and the bearing outer ring, the projected contact short radius between any ceramic bearing ball and the bearing outer ring, the projected contact long radius between any ceramic bearing ball inner ring of the target ceramic ball hybrid bearing, and the projected contact short radius between any ceramic bearing ball and the bearing inner ring;

[0020] Based on the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and bearing outer ring of the angular contact hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and bearing outer ring, the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated;

[0021] Based on the projected contact long radius of the outer ring of any ceramic bearing ball in the angular contact hybrid ceramic bearing and the projected contact short radius of any ceramic bearing ball and the inner ring of the bearing, the maximum contact stress of the inner ring of any ceramic bearing ball in the target ceramic ball hybrid bearing is calculated.

[0022] In an optional embodiment, calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing further includes:

[0023] If the target ceramic ball hybrid bearing is a deep groove ball hybrid ceramic bearing, obtain the projected contact long radius of the outer ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, the projected contact short radius of any ceramic bearing ball and the outer ring of the bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing, and the projected contact short radius of any ceramic bearing ball and the inner ring of the bearing;

[0024] Based on the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius between any ceramic bearing ball and the bearing outer ring of the deep groove ball hybrid ceramic bearing, and the projected contact short radius between any ceramic bearing ball and the bearing outer ring, the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated;

[0025] Based on the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and bearing inner ring of the deep groove ball hybrid ceramic bearing, the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

[0026] In an optional embodiment, the remaining fatigue life of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated by the following formula:

[0027]

[0028] Among them, A1 is the target ceramic ball hybrid bearing life reliability correction coefficient, A2 is the bearing ring material life coefficient, A3 is the bearing operation lubrication correction coefficient, A4 is the target ceramic ball hybrid bearing remaining life average correction coefficient, A5 is the target ceramic ball hybrid bearing remaining life temperature correction coefficient, F r is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, C Da is the target ceramic ball hybrid bearing rated dynamic load, n is the target ceramic ball hybrid bearing speed, and p is a constant.

[0029] In an optional embodiment, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing is obtained through multiple experimental tests, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing is determined based on the operating temperature of the target ceramic ball hybrid bearing, the linear term coefficient of the linear function, and the slope parameter.

[0030] According to a second aspect, an embodiment of the present disclosure provides a fatigue life calculation device for a ceramic ball hybrid bearing, the device comprising:

[0031] The first acquisition module is used to obtain the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls;

[0032] The first calculation module is used to calculate the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls;

[0033] The second acquisition module is used to obtain the bearing type of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing;

[0034] The second calculation module is used to calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing;

[0035] The third calculation module is used to calculate the remaining fatigue life of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the remaining life temperature correction coefficient of the target ceramic ball hybrid bearing if the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold.

[0036] According to a third aspect, an embodiment of the present disclosure provides a computer device, including:

[0037] The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the fatigue life calculation method of the ceramic ball hybrid bearing in the first aspect or any embodiment of the first aspect by executing the computer instructions.

[0038] According to a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the fatigue life calculation method for ceramic ball hybrid bearings in the first aspect or any embodiment of the first aspect.

[0039] According to a fifth aspect, an embodiment of the present disclosure provides a computer program product, comprising computer instructions for causing a computer to execute the fatigue life calculation method for a ceramic ball hybrid bearing in the first aspect or any embodiment of the first aspect.

[0040] The technical solution of the present invention has the following advantages:

[0041] The present invention discloses a method and device for calculating the fatigue life of a ceramic ball hybrid bearing. The method calculates the maximum contact stress of any ceramic bearing ball in the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing. If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load on the bearing ring of the target ceramic ball hybrid bearing, the average remaining life correction factor of the target ceramic ball hybrid bearing, and the remaining life temperature correction factor of the target ceramic ball hybrid bearing. Because the present invention takes into account the ambient temperature of the target ceramic ball hybrid bearing, it can accurately calculate the remaining fatigue life of the target ceramic ball hybrid bearing and meet practical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 1 is a flow chart of a method for calculating fatigue life of a ceramic ball hybrid bearing according to an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of determining a temperature correction coefficient of the remaining life of a target ceramic ball hybrid bearing according to an embodiment of the present invention;

[0045] Figure 3A The data is data for determining the remaining life temperature correction coefficient of the target ceramic ball hybrid bearing at different operating temperatures according to the target ceramic ball hybrid bearing according to an embodiment of the present invention;

[0046] Figure 3B is a broken line diagram of a temperature correction coefficient of the remaining life of a target ceramic ball hybrid bearing according to an embodiment of the present invention;

[0047] Figure 4 is a structural block diagram of a device for calculating fatigue life of a ceramic bearing ball according to an embodiment of the present invention;

[0048] Figure 5 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0050] According to an embodiment of the present invention, an embodiment of a method for calculating the fatigue life of a ceramic ball hybrid bearing is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0051] In this embodiment, a fatigue life calculation method for a ceramic ball hybrid bearing is provided, which can be used in mobile terminals such as mobile phones and tablet computers. Figure 1 FIG. 1 is a flow chart of a method for calculating fatigue life of a ceramic ball hybrid bearing according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0052] Step S101: Obtain the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls.

[0053] Specifically, for example, when the industrial computer is started, the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls are obtained. These parameters are the ceramic bearing ball parameters input by the experimenter into the industrial computer. Among them, the external load of the bearing ring of the target ceramic ball hybrid bearing can be expressed as Q max The contact angle under load can be represented by α', and the number of ceramic bearing balls can be represented by Z.

[0054] Step S102 , calculating the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls.

[0055] Specifically, the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is related to the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing. Therefore, calculating the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is to calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing.

[0056] In an optional embodiment, based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls, the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing is calculated using the following formula (1):

[0057]

[0058] Among them, Q max is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, Z is the number of ceramic bearing balls, α' is the contact angle of the target ceramic ball hybrid bearing under load, F r External load on the bearing rings of a target ceramic ball hybrid bearing.

[0059] Step S103: Obtain the bearing type of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing.

[0060] The target ceramic ball hybrid bearing in the disclosed embodiment belongs to the following bearing types: thrust ball hybrid ceramic bearing, ceramic bearing ball and test plate, angular contact hybrid ceramic bearing, and deep groove ball hybrid ceramic bearing.

[0061] Among them, deep groove ball hybrid ceramic bearings are suitable for high speed or even extremely high speed operation, and are very durable and do not require frequent maintenance;

[0062] Among them, the thrust ball hybrid ceramic bearing is designed to withstand thrust loads when running at high speeds, and is composed of a washer-shaped ring with a raceway groove for ball rolling.

[0063] Among them, in the angular contact hybrid ceramic bearing, the line connecting the contact points between the bearing ball and the inner and outer rings of the angular contact bearing forms an angle with the radial direction.

[0064] Among them, ceramic bearing balls and test boards are used to evaluate the bearing balls and test boards made of various materials to test the bearing balls, observe the wear of the bearing balls, and calculate the performance indicators such as the load-bearing capacity and life of various materials that match the bearing balls;

[0065] Specifically, rolling bearings include: thrust ball hybrid ceramic bearings, ceramic bearing balls and test plates, angular contact hybrid ceramic bearings, and deep groove ball hybrid ceramic bearings. The number of packaged bearing balls in each type of rolling bearing varies due to manufacturer design differences and different groove curvatures, which makes it difficult to calculate the fatigue life of the bearing balls. Existing methods for calculating the fatigue life of rolling bearings (such as the basic rating life calculation method) are mainly applicable to standard bearings and cannot accurately evaluate rolling element bearings using silicon nitride materials. In addition, these methods cannot accurately calculate the basic rating life of bearings loaded with different numbers of rolling elements, nor the exact maximum contact stress load to which the bearing balls are subjected.

[0066] Calculating the maximum contact stress δmax experienced by a single bearing ball in a standard bearing is a challenging task, especially when the inner and outer rings are made of bearing steel and the balls are made of materials such as silicon nitride. Depending on the specific application conditions of the bearing, it is usually necessary to consider the impact of the following two internal and external factors on bearing life:

[0067] 1. External environmental factors: bearing lubrication selection, operating temperature, speed, axial and radial load (unit: N).

[0068] 2. Bearing internal factors: bearing ball diameter, number of rolling elements, curvature radius of bearing inner and outer rings, groove bottom diameter, and elastic modulus of bearing inner and outer rings and rolling elements, etc.

[0069] However, the calculation method that relies on traditional mechanical models often ignores these factors by establishing a simplified mathematical model to predict the stress conditions of ceramic bearing balls. Therefore, under complex working conditions, the fatigue life calculation method of traditional ceramic ball hybrid bearings is difficult to meet actual needs.

[0070] In view of this, the embodiment of the present disclosure calculates the maximum contact stress of any bearing ball of the target ceramic ball hybrid bearing under each type of bearing according to the maximum bearing stress calculation method corresponding to the type of bearing.

[0071] At the same time, multiple experimental tests were conducted on rolling bearings to obtain the average remaining life correction factor and the target ceramic ball hybrid bearing's remaining life temperature correction factor. The average remaining life correction factor can be represented by A4, and the target ceramic ball hybrid bearing's remaining life temperature correction factor can be represented by A5.

[0072] In an optional embodiment, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing is determined by obtaining the remaining life of the all-steel bearing and the remaining life of the hybrid bearing through multiple experimental tests, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing is determined based on the target ceramic ball hybrid bearing operating temperature, the linear term coefficient of the linear function, and the slope parameter.

[0073] like Figure 2 As shown, taking the target ceramic ball hybrid bearing as an example of silicon nitride ceramic balls, multiple destructive fatigue experiments can be carried out to obtain the test results of the remaining life of the all-steel bearing and the remaining life of the hybrid bearing in each test, and then determine the average correction coefficient A4 of the remaining life of the target ceramic ball hybrid bearing. This correction coefficient can be determined as 2 based on the results of multiple tests. This value is determined based on the comprehensive determination of multiple experiments.

[0074] like Figure 3A As shown in FIG, based on the different operating temperatures of the target ceramic ball hybrid bearing and the linear term coefficient k and slope parameter b of the linear function corresponding to each temperature range, the remaining life temperature correction coefficient A5 of the target ceramic ball hybrid bearing is determined. Figure 3B FIG. 1 is a broken line diagram of the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing. FIG.

[0075] Step S104, calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing.

[0076] Specifically, because the bearing type to which the target ceramic ball hybrid bearing belongs can be a thrust ball hybrid ceramic bearing or a ceramic bearing ball and test plate or an angular contact hybrid ceramic bearing or a deep groove ball hybrid ceramic bearing, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing can be calculated for each type of target ceramic ball hybrid bearing.

[0077] For a thrust ball hybrid ceramic bearing, in an optional embodiment, the above step S104, based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing, including:

[0078] Step a1: If the target ceramic ball hybrid bearing belongs to a thrust ball hybrid ceramic bearing, obtain the projected contact long radius and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing.

[0079] Step a2, based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing, calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing.

[0080] Specifically, the maximum contact stress of any bearing ball of the thrust ball hybrid ceramic bearing is calculated by the following formula (2):

[0081]

[0082] Among them, a1 is the projected contact long radius of any ceramic bearing ball and bearing ring of the thrust ball hybrid ceramic bearing, b1 is the projected contact short radius of any ceramic bearing ball and bearing ring of the thrust ball hybrid ceramic bearing, Q max is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, δ max1 The maximum contact stress of any ceramic bearing ball in the thrust ball hybrid ceramic bearing.

[0083] For the ceramic bearing balls and the test board, in an optional embodiment, the above step S104, based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing, including:

[0084] Step b1: If the target ceramic ball hybrid bearing belongs to a ceramic bearing ball and an experimental plate, obtain the second kind of elliptic integral parameters, the number of ceramic bearing balls, the bearing radius of the ceramic bearing ball, and the Poisson's ratio parameters of the ceramic bearing ball and the experimental plate.

[0085] Step b2, based on the second type elliptic integral parameters of the ceramic bearing balls and the experimental plate, the number of ceramic bearing balls, the bearing radius of the ceramic bearing balls, and the Poisson's ratio parameters, calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing.

[0086] Specifically, the maximum contact stress between the ceramic bearing ball and the test plate is calculated by the following formula:

[0087]

[0088] Among them, δ max2 is the maximum contact stress between the ceramic bearing ball and the test plate, Q max is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, E m is the second kind of elliptic integral parameter of the ceramic bearing ball and the experimental plate, R is the bearing radius of the ceramic bearing ball, z is the number of ceramic bearing balls, and 1 / m2 is a Poisson's ratio parameter.

[0089] For angular contact hybrid ceramic bearings, step S104, based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing, including:

[0090] Step c1: If the target ceramic ball hybrid bearing is an angular contact hybrid ceramic bearing, obtain the projected contact long radius of any ceramic bearing ball of the angular contact hybrid ceramic bearing and the bearing outer ring, the projected contact short radius of any ceramic bearing ball and the bearing outer ring, the projected contact long radius of any ceramic bearing ball inner ring of the target ceramic ball hybrid bearing, and the projected contact short radius of any ceramic bearing ball and the bearing inner ring.

[0091] Step c2, based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the angular contact hybrid ceramic bearing, the projected contact long radius of any ceramic bearing ball and the bearing outer ring of the angular contact hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring, calculate the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing.

[0092] Step c3, calculating the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the projected contact long radius of the inner ring of any ceramic bearing ball and the projected contact short radius between any ceramic bearing ball and the inner ring of the bearing.

[0093] Specifically, the maximum contact stress between any ceramic bearing ball and the outer ring of the angular contact hybrid ceramic bearing is calculated by the following formula (4):

[0094]

[0095] Specifically, the maximum contact stress between any ceramic bearing ball and the inner ring of the angular contact hybrid ceramic bearing is calculated by the following formula (5):

[0096]

[0097] Among them, δ max3 is the maximum contact stress between any ceramic bearing ball and the outer ring of the angular contact hybrid ceramic bearing, δ max4 is the maximum contact stress between any ceramic bearing ball and the inner ring of the angular contact hybrid ceramic bearing, Q max is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, a2 is the projected contact long radius of any ceramic bearing ball and bearing inner ring of the angular contact hybrid ceramic bearing, b2 is the projected contact long radius of any ceramic bearing ball and bearing inner ring of the angular contact hybrid ceramic bearing, a3 is the projected contact long radius of any ceramic bearing ball and bearing outer ring of the angular contact hybrid ceramic bearing, and b3 is the projected contact long radius of any ceramic bearing ball and bearing outer ring of the angular contact hybrid ceramic bearing.

[0098] For a deep groove ball hybrid ceramic bearing, step S104 calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, including:

[0099] Step d1: If the target ceramic ball hybrid bearing is a deep groove ball hybrid ceramic bearing, obtain the projected contact long radius of the outer ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, the projected contact short radius between any ceramic bearing ball and the outer ring of the bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing, and the projected contact short radius between any ceramic bearing ball and the inner ring of the bearing.

[0100] Step d2, based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing outer ring of the deep groove ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring, calculate the maximum contact stress between any ceramic bearing ball and the bearing outer ring of the target ceramic ball hybrid bearing.

[0101] Step d3, based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball of the target ceramic ball hybrid bearing and the bearing inner ring, and the projected contact short radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing inner ring, calculate the maximum contact stress between any ceramic bearing ball of the target ceramic ball hybrid bearing and the bearing inner ring.

[0102] Specifically, the maximum contact stress between any ceramic bearing ball and the inner ring of a deep groove ball hybrid ceramic bearing is calculated by the following formula (6):

[0103]

[0104] Specifically, the maximum contact stress between any ceramic bearing ball and the outer ring of the angular contact hybrid ceramic bearing is calculated by the following formula (7):

[0105]

[0106] Among them, δ max5 is the maximum contact stress between any ceramic bearing ball and the inner ring of the deep groove ball hybrid ceramic bearing, δ max6 is the maximum contact stress between any ceramic bearing ball and the outer ring of the deep groove ball hybrid ceramic bearing, Q max is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, a4 is the projected contact long radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing inner ring, b4 is the projected contact long radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing inner ring, a5 is the projected contact long radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing outer ring, and b5 is the projected contact long radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing outer ring.

[0107] Furthermore, a1 and b1 in (2), a2 and b2 in (4), a3 and b3 in (5), a4 and b4 in (6), and a5 and b5 in (7) in the above formula can be calculated by the following formulas (8)-(13):

[0108]

[0109] Wherein, μ is the major semi-axis of the contact ellipse with dimension 1, ν is the minor semi-axis of the contact ellipse with dimension 1, λ is the shape error correction coefficient of any ceramic bearing ball of the target ceramic ball hybrid bearing, Q is the ceramic bearing ball of the target ceramic ball hybrid bearing that bears the maximum load, θ1 is the material coefficient of any ceramic bearing ball of the target ceramic ball hybrid bearing, θ2 is the material coefficient of the bearing ring of the target ceramic ball hybrid bearing, ρ is the curvature radius of any ceramic bearing ball of the target ceramic ball hybrid bearing, 1 / m2 is the Poisson's ratio parameter of the other ceramic bearing ball, E2 is the elastic modulus of any ceramic bearing ball of the target ceramic ball hybrid bearing, and E2 is the elastic modulus of the bearing ring of any ceramic bearing ball of the target ceramic ball hybrid bearing. m0 is the second kind elliptic integral of any type of target ceramic ball hybrid bearing, and κ is the ellipse eccentricity parameter.

[0110] Step S105: If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing.

[0111] Specifically, in the process of calculating the remaining life of any ceramic ball of the target ceramic ball hybrid bearing, the average correction coefficient A4 of the remaining life of any ceramic bearing ball of the target ceramic ball hybrid bearing and the temperature correction coefficient A5 of the remaining life of any ceramic bearing ball of the target ceramic ball hybrid bearing are very important. These two parameters are reasonably designed based on the environmental factors of the target ceramic ball hybrid bearing under actual complex working conditions.

[0112] In a specific embodiment, the remaining fatigue life of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated by the following formula (14):

[0113]

[0114] Among them, A1 is the target ceramic ball hybrid bearing life reliability correction coefficient, A2 is the bearing ring material life coefficient, A3 is the bearing operation lubrication correction coefficient, A4 is the average correction coefficient of the target ceramic ball hybrid bearing's remaining life, A5 is the temperature correction coefficient of the target ceramic ball hybrid bearing's remaining life, F r is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, C Da is the target ceramic ball hybrid bearing rated dynamic load, n is the target ceramic ball hybrid bearing speed, and p is a constant.

[0115] The fatigue life calculation method for a ceramic ball hybrid bearing in an embodiment of the present disclosure calculates the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing. If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average remaining life correction coefficient of the target ceramic ball hybrid bearing, and the remaining life temperature correction coefficient of the target ceramic ball hybrid bearing. Because the present invention takes into account the ambient temperature of the target ceramic ball hybrid bearing, it can accurately calculate the remaining fatigue life of the target ceramic ball hybrid bearing and meet practical needs.

[0116] This embodiment also provides a fatigue life calculation device for a ceramic ball hybrid bearing. This device is used to implement the aforementioned embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented using software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0117] The embodiment of the present invention provides a fatigue life calculation device for a ceramic ball hybrid bearing, such as Figure 4 As shown, the device includes:

[0118] The first acquisition module 41 is used to obtain the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls;

[0119] A first calculation module 42 is configured to calculate the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls;

[0120] A second acquisition module 43 is configured to acquire the bearing type of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing;

[0121] A second calculation module 44 is configured to calculate a maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing;

[0122] The third calculation module 45 is used to calculate the remaining fatigue life of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing, if the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold.

[0123] In an optional embodiment, the target ceramic ball hybrid bearing belongs to the following bearing types: thrust ball hybrid ceramic bearing, ceramic bearing ball and test plate, angular contact hybrid ceramic bearing, deep groove ball hybrid ceramic bearing.

[0124] In an optional embodiment, the second calculation module 44 includes:

[0125] The first acquisition submodule is used for obtaining the projected contact long radius and short radius of any ceramic bearing ball and bearing ring of the thrust ball hybrid ceramic bearing to which the target ceramic ball hybrid bearing belongs;

[0126] The first calculation submodule is used to calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing.

[0127] In an optional embodiment, the second calculation module 44 further includes:

[0128] The third acquisition submodule is used to obtain the second type elliptic integral parameters, the number of ceramic bearing balls, the bearing radius of the ceramic bearing balls, and the Poisson's ratio parameters of the ceramic bearing balls and the experimental board if the target ceramic ball hybrid bearing belongs to the ceramic bearing balls and the experimental board;

[0129] The second calculation submodule is used to calculate the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the second type elliptic integral parameters of the ceramic bearing ball and the experimental board, the number of ceramic bearing balls, the bearing radius of the ceramic bearing balls, and the Poisson's ratio parameters.

[0130] In an optional embodiment, the second calculation module 44 further includes:

[0131] A fourth acquisition submodule is configured to obtain, if the target ceramic ball hybrid bearing is an angular contact hybrid ceramic bearing, a projected contact long radius between any ceramic bearing ball of the angular contact hybrid ceramic bearing and the bearing outer ring, a projected contact short radius between any ceramic bearing ball and the bearing outer ring, a projected contact long radius between any ceramic bearing ball inner ring of the target ceramic ball hybrid bearing, and a projected contact short radius between any ceramic bearing ball and the bearing inner ring;

[0132] The third calculation submodule is used to calculate the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing outer ring of the angular contact hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring;

[0133] The fourth calculation submodule is used to calculate the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the projected contact long radius of the outer ring of any ceramic bearing ball of the angular contact hybrid ceramic bearing and the projected contact short radius of any ceramic bearing ball and the inner ring of the bearing.

[0134] In an optional embodiment, the second calculation module 44 further includes:

[0135] A fifth acquisition submodule is configured to obtain, if the target ceramic ball hybrid bearing belongs to a deep groove ball hybrid ceramic bearing, the projected contact long radius of the outer ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, the projected contact short radius of any ceramic bearing ball and the outer ring of the bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing, and the projected contact short radius of any ceramic bearing ball and the inner ring of the bearing;

[0136] A fifth calculation submodule is used to calculate the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing outer ring, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring;

[0137] The sixth calculation submodule is used to calculate the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing inner ring.

[0138] In an optional embodiment, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated using the above formula (14).

[0139] In an optional embodiment, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing is obtained through multiple experimental tests, and the temperature correction coefficient of the remaining life of any ceramic bearing ball of the target ceramic ball hybrid bearing is determined based on the operating temperature of the target ceramic ball hybrid bearing, the linear term coefficient of the linear function, and the slope parameter.

[0140] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0141] The fatigue life calculation device of the ceramic ball hybrid bearing in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0142] An embodiment of the present invention further provides a computer device having the above-mentioned fatigue life calculation device for ceramic ball hybrid bearings.

[0143] See also Figure 5 , Figure 5 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 5 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 5 A processor 10 is taken as an example.

[0144] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0145] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0146] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0147] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0148] The computer device further includes a communication interface 50 for the computer device to communicate with other devices or a communication network.

[0149] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0150] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0151] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for calculating the fatigue life of a ceramic ball hybrid bearing, characterized in that: The method comprises: Obtain the external load on the bearing ring of the target ceramic ball hybrid bearing, the contact angle under load, and the number of ceramic bearing balls; Calculate the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls; Obtain the bearing type of the target ceramic ball hybrid bearing, the average correction factor for the remaining life of the target ceramic ball hybrid bearing, and the temperature correction factor for the remaining life of the target ceramic ball hybrid bearing; wherein, multiple destructive fatigue experiments are performed to obtain the test results of the remaining life of the all-steel bearing and the remaining life of the hybrid bearing in each test, and then determine the average correction factor for the remaining life of the target ceramic ball hybrid bearing; Calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing; If the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold, the remaining fatigue life of the target ceramic ball hybrid bearing is calculated based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing.

2. The method according to claim 1, characterized in that The target ceramic ball hybrid bearings belong to bearing types including: thrust ball hybrid ceramic bearings, ceramic bearing balls and test plates, angular contact hybrid ceramic bearings, and deep groove ball hybrid ceramic bearings.

3. The method according to claim 1, characterized in that Calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing includes: If the target ceramic ball hybrid bearing belongs to a thrust ball hybrid ceramic bearing, obtaining the projected contact long radius and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing; Based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing ring of the thrust ball hybrid ceramic bearing, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

4. The method according to claim 3, characterized in that Calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing further includes: If the target ceramic ball hybrid bearing belongs to a ceramic bearing ball and an experimental plate, obtain the second kind elliptic integral parameters, the number of ceramic bearing balls, the bearing radius of the ceramic bearing ball, and the Poisson's ratio parameters of the ceramic bearing ball and the experimental plate; Based on the second kind of elliptic integral parameters of the ceramic bearing balls and the test plate, the number of ceramic bearing balls, the bearing radius of the ceramic bearing balls, and the Poisson's ratio parameter, the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

5. The method according to claim 3, characterized in that Calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing further includes: If the target ceramic ball hybrid bearing is an angular contact hybrid ceramic bearing, obtain the projected contact long radius between any ceramic bearing ball of the angular contact hybrid ceramic bearing and the bearing outer ring, the projected contact short radius between any ceramic bearing ball and the bearing outer ring, the projected contact long radius between any ceramic bearing ball inner ring of the target ceramic ball hybrid bearing, and the projected contact short radius between any ceramic bearing ball and the bearing inner ring; Calculate the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing outer ring of the angular contact hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring; Based on the projected contact long radius of the outer ring of any ceramic bearing ball of the angular contact hybrid ceramic bearing and the projected contact short radius of any ceramic bearing ball and the bearing inner ring, the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

6. The method according to claim 3, characterized in that Calculating the maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing further includes: If the target ceramic ball hybrid bearing is a deep groove ball hybrid ceramic bearing, obtain the projected contact long radius of the outer ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, the projected contact short radius of any ceramic bearing ball and the outer ring of the bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing, and the projected contact short radius of any ceramic bearing ball and the inner ring of the bearing; Calculate the maximum contact stress of the outer ring of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of any ceramic bearing ball and the bearing outer ring of the deep groove ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball and the bearing outer ring; Based on the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing, the projected contact long radius of the inner ring of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing, and the projected contact short radius of any ceramic bearing ball of the deep groove ball hybrid ceramic bearing and the bearing inner ring, the maximum contact stress of the inner ring of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated.

7. The method according to claim 1, characterized in that The remaining fatigue life of any ceramic bearing ball of the target ceramic ball hybrid bearing is calculated by the following formula: Among them, A1 is the target ceramic ball hybrid bearing life reliability correction coefficient, A2 is the bearing ring material life coefficient, A3 is the bearing operation lubrication correction coefficient, A4 is the target ceramic ball hybrid bearing remaining life average correction coefficient, A5 is the target ceramic ball hybrid bearing remaining life temperature correction coefficient, F r is the maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing, C Da is the target ceramic ball hybrid bearing rated dynamic load, n is the target ceramic ball hybrid bearing speed, and p is a constant.

8. The method according to any one of claims 1 to 7, characterized in that The average correction coefficient of the remaining life of the target ceramic ball hybrid bearing is obtained through multiple experimental tests, and the temperature correction coefficient of the remaining life of the target ceramic ball hybrid bearing is determined based on the target ceramic ball hybrid bearing operating temperature, the linear term coefficient of the linear function, and the slope parameter.

9. A fatigue life calculation device for ceramic ball hybrid bearings, characterized in that: The device comprises: The first acquisition module is used to obtain the external load of the bearing ring of the target ceramic ball hybrid bearing, the contact angle when loaded, and the number of ceramic bearing balls; a first calculation module, configured to calculate a maximum normal force borne by any ceramic bearing ball and bearing ring of the target ceramic ball hybrid bearing based on an external load on the bearing ring of the target ceramic ball hybrid bearing, a contact angle under load, and the number of ceramic bearing balls; The second acquisition module is used to obtain the bearing type of the target ceramic ball hybrid bearing, the average correction factor of the remaining life of the target ceramic ball hybrid bearing, and the temperature correction factor of the remaining life of the target ceramic ball hybrid bearing; wherein, multiple destructive fatigue experiments are performed to obtain the test results of the remaining life of the all-steel bearing and the remaining life of the hybrid bearing in each test, and then determine the average correction factor of the remaining life of the target ceramic ball hybrid bearing; a second calculation module, configured to calculate a maximum contact stress of any ceramic bearing ball of the target ceramic ball hybrid bearing based on the bearing type of the target ceramic ball hybrid bearing and the maximum normal force borne by any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing; The third calculation module is used to calculate the remaining fatigue life of the target ceramic ball hybrid bearing based on the external load of the bearing ring of the target ceramic ball hybrid bearing, the average correction coefficient of the remaining life of the target ceramic ball hybrid bearing, and the remaining life temperature correction coefficient of the target ceramic ball hybrid bearing if the maximum contact stress between any ceramic bearing ball and the bearing ring of the target ceramic ball hybrid bearing is less than a preset stress threshold.

10. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the fatigue life calculation method of the ceramic ball hybrid bearing according to any one of claims 1 to 8 by executing the computer instructions.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the fatigue life calculation method of the ceramic ball hybrid bearing according to any one of claims 1 to 8.

12. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the fatigue life calculation method of a ceramic ball hybrid bearing according to any one of claims 1 to 8.

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