Design checking calculation method and design optimization method for inner component of tapered roller bearing

Abstract

The invention discloses a design checking calculation method and a design optimization method for an inner component of a tapered roller bearing, and relates to a design checking calculation method and a design optimization method. The problems that in the prior art, the accuracy of the design checking calculation process of the tapered roller bearing is low, and the efficiency is low when original design parameters are optimized are solved. According to the design checking calculation method and the design optimization method provided by the invention, the geometrical relationship among the components in the tapered roller bearing is researched and expressed by a mathematical calculation formula, so that the related design parameters of the retainer, the inner ring and the roller can be accurately checked and optimized according to the method to meet the design requirements, and the design accuracy and the design efficiency of the bearing are improved; and the bearing can meet technical requirements. The invention belongs to the technical field of checking calculation and optimization in the bearing design process.

Description

Technical Field

[0001] The invention relates to a design verification method and a design optimization method, in particular to a design verification method and a design optimization method for an inner component of a tapered roller bearing, and belongs to the technical field of verification and optimization in the bearing design process. Background Art

[0002] In the field of bearing design, tapered roller bearings are often used in low-speed and heavy-load working conditions. As equipment performance continues to improve, higher technical requirements are also placed on bearing performance and life. In order to improve bearing performance, the stamped cage structure used in tapered roller bearings is gradually replaced by a solid cage structure. At the same time, due to the requirements of equipment installation, disassembly, maintenance and other use conditions, the inner ring, roller and cage of the bearing must still be an internal component structure.

[0003] However, the design verification of the components inside this type of bearing is still carried out by drawing, which has low accuracy. In addition, when the design verification results do not meet the design requirements, the original design parameters need to be optimized, which further reduces efficiency.

[0004] In summary, how to propose a new internal component design verification method and design optimization method to address the above technical issues has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of the above-mentioned deficiencies of the prior art, the present invention provides a design verification method and a design optimization method for an inner component of a tapered roller bearing.

[0006] The technical solution of the present invention is: a design and verification method for the inner components of a tapered roller bearing, the inner components including a retaining frame, an inner ring and a plurality of rollers, a plurality of pockets are opened on the circumferential surface of the retaining frame in a circumferential array, and a first pocket locking point and a second pocket locking point are integrally arranged on each pocket beam.

[0007] Furthermore, the method is specifically carried out according to the following steps:

[0008] Step 1: Calculate the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction. The width direction of the first pocket locking point is the same as the width direction of the cage, and the first pocket locking point is close to the small end face of the pocket.

[0009] Step 2: Calculate the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction. The width direction of the second pocket locking point is the same as the width direction of the cage, and the second pocket locking point is close to the large end face of the pocket.

[0010] Step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller;

[0011] Step 4, calculate the rib height h1 of the inner ring small rib;

[0012] Step 5: Compare the sizes of y1, y2 and h1. When y1 and y2 are both smaller than h1, the internal components meet the design requirements.

[0013] The present invention also provides a method for optimizing the design of internal components of a tapered roller bearing, wherein the internal components include a retaining frame, an inner ring and a plurality of rollers, a plurality of pockets are opened on the circumferential surface of the retaining frame in a circumferential array, and a first pocket locking point and a second pocket locking point are integrally provided on each pocket beam.

[0014] Furthermore, the method is specifically carried out according to the following steps:

[0015] S1, calculate the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction, the width direction of the first pocket locking point is the same as the width direction of the cage, and the first pocket locking point is close to the small end face of the pocket;

[0016] The calculation process of the roller diameter △1 corresponding to the center of the width direction of the first pocket locking point is as follows:

[0017]

[0018] Where:

[0019] △: The big end diameter of the roller;

[0020] The angle between the roller generatrix and the roller axis;

[0021] L n : The length of the roller;

[0022] L b1 : The distance from the small end face of the pocket to the small end face of the cage;

[0023] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0024] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the cage;

[0025] S2. Calculate the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction. The width direction of the second pocket locking point is the same as the width direction of the cage, and the second pocket locking point is close to the large end face of the pocket. The calculation process of the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction is as follows:

[0026]

[0027] Where:

[0028] △: The big end diameter of the roller;

[0029] The angle between the roller generatrix and the roller axis;

[0030] L n : The length of the roller;

[0031] L b1 : The distance from the small end face of the pocket to the small end face of the cage;

[0032] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the cage;

[0033] S3, step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller;

[0034] The calculation process of the first maximum sinking amount y1 is as follows:

[0035]

[0036] The calculation process of the second maximum sinking amount y2 is as follows:

[0037]

[0038] Where:

[0039] D C1 : The outer diameter of the outer circumference of the first pocket locking point;

[0040] D C2 : The outer diameter of the outer circumference of the second pocket locking point;

[0041] θ: The angle between the cage generatrix and the cage axis;

[0042] A1: The width of the first and second pocket locking points;

[0043] h: The locking point thickness of the first pocket locking point and the second pocket locking point, the locking point thickness direction is the diameter direction of the cage;

[0044] △1: The roller diameter corresponding to the center of the first pocket locking point in the width direction;

[0045] △2: The roller diameter corresponding to the center of the second pocket locking point in the width direction;

[0046] d1: Maximum diameter of the inner ring raceway;

[0047] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0048] L n : The length of the roller;

[0049] L b1 : The distance from the small end face of the pocket to the small end face of the cage;

[0050] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0051] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the cage;

[0052] S4. Calculate the rib height h1 of the inner ring small rib. The calculation process of the rib height h1 of the inner ring small rib is as follows:

[0053]

[0054] d3: inner ring small rib diameter;

[0055] d1: Maximum diameter of the inner ring raceway;

[0056] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0057] L n : The length of the roller;

[0058] r1: Maximum size of the axial chamfer of the roller small end;

[0059] S5. Compare the sizes of y1, y2 and h1. When y1 and y2 are both greater than or equal to h1, the internal component does not meet the design requirements and needs to be optimized. The specific optimization method is as follows:

[0060] Increase the inner ring small rib diameter d3 to increase the rib height h1 until y1 and y2 are both smaller than h1;

[0061] Or reduce the outer diameter D of the outer circumference of the first pocket locking point C1 , reduce the outer diameter D of the outer circumference of the second pocket locking point C2 , thereby reducing y1 and y2 until both y1 and y2 are smaller than h1.

[0062] Compared with the prior art, the present invention has the following effects:

[0063] The design verification method and design optimization method provided by the present invention study the geometric relationship between the components in the tapered roller bearing and express it with mathematical calculation formulas. According to this method, the relevant design parameters of the retainer, inner ring and roller can be accurately verified and optimized to meet the design requirements, improve the design accuracy and design efficiency of the bearing, and ensure that the bearing can meet the technical requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a cross-sectional view of the components inside a tapered roller bearing;

[0065] Figure 2 yes Figure 1 A partial enlarged view of point Ⅰ in the middle;

[0066] Figure 3 is a front view of roller 200;

[0067] Figure 4 is a cross-sectional view of the cage 100;

[0068] Figure 5 yes Figure 4 A local enlarged view of the K direction;

[0069] Figure 6 yes Figure 5 Cross-sectional view along the E direction;

[0070] Figure 7 yes Figure 5 Cross-sectional view along the G direction.

[0071] In the figure: 100, cage; 200, roller. DETAILED DESCRIPTION

[0072] In order to make the purpose, features and advantages of the present invention more obvious and understandable, 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.

[0073] Specific implementation method 1: Combination Figures 1 to 7 The present embodiment is described. The present embodiment is a method for designing and verifying the inner components of a tapered roller bearing. The inner components include a retaining frame 100, an inner ring and a plurality of rollers 200. A plurality of pockets are formed on the circumferential surface of the retaining frame 100 in a circumferential array, and a first pocket locking point and a second pocket locking point are integrally provided on each pocket beam.

[0074] Furthermore, the method is specifically carried out according to the following steps:

[0075] Step 1, calculating the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction, the width direction of the first pocket locking point is the same as the width direction of the retaining frame 100, and the first pocket locking point is close to the small end face of the pocket;

[0076] Step 2: Calculate the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction, the width direction of the second pocket locking point is the same as the width direction of the retaining frame 100, and the second pocket locking point is close to the large end face of the pocket;

[0077] Step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller 200;

[0078] Step 4, calculate the rib height h1 of the inner ring small rib;

[0079] Step 5: Compare the sizes of y1, y2 and h1. When y1 and y2 are both smaller than h1, the internal components meet the design requirements.

[0080] Specific implementation method 2: Combination Figures 1 to 7 To illustrate this embodiment, the calculation process of the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction in step 1 of this embodiment is as follows:

[0081]

[0082] Where:

[0083] △: The big end diameter of roller 200;

[0084] The angle between the generatrix of the roller 200 and the axis of the roller 200;

[0085] L n : The length of roller 200;

[0086] L b1 : The distance from the small end face of the pocket to the small end face of the cage 100;

[0087] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0088] L b3 : The distance from the center of the second pocket locking point in the width direction to the small end face of the retaining frame 100.

[0089] Other components and connection relationships are the same as those in the first specific implementation method.

[0090] Specific implementation method three: Combination Figures 1 to 7To illustrate this embodiment, the calculation process of the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction in step 2 of this embodiment is as follows:

[0091]

[0092] Where:

[0093] △: The big end diameter of roller 200;

[0094] The angle between the generatrix of the roller 200 and the axis of the roller 200;

[0095] L n : The length of roller 200;

[0096] L b1 : The distance from the small end face of the pocket to the small end face of the cage 100;

[0097] L b3 : The distance from the center of the second pocket locking point in the width direction to the small end face of the retaining frame 100.

[0098] The other components and connection relationships are the same as those in the first or second specific implementation.

[0099] Specific implementation method four: Combination Figures 1 to 7 To illustrate this embodiment, the calculation process of the first maximum sinking amount y1 of the roller 200 in step 3 of this embodiment is as follows:

[0100]

[0101] Furthermore, the calculation process of the second maximum sinking amount y2 of the roller 200 in step 3 is as follows:

[0102]

[0103] Where:

[0104] D C1 : The outer diameter of the outer circumference of the first pocket locking point;

[0105] D C2 : The outer diameter of the outer circumference of the second pocket locking point;

[0106] θ: Angle between the generatrix of the cage 100 and the axis of the cage 100;

[0107] A1: The width of the first and second pocket locking points;

[0108] h: the locking point thickness of the first pocket locking point and the second pocket locking point, the locking point thickness direction is the diameter direction of the cage 100;

[0109] △1: The roller diameter corresponding to the center of the first pocket locking point in the width direction;

[0110] △2: The roller diameter corresponding to the center of the second pocket locking point in the width direction;

[0111] d1: Maximum diameter of the inner ring raceway;

[0112] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0113] L n : The length of roller 200;

[0114] L b1 : The distance from the small end face of the pocket to the small end face of the cage 100;

[0115] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0116] L b3 : The distance from the center of the second pocket locking point in the width direction to the small end face of the retaining frame 100.

[0117] The other components and connection relationships are the same as those of the first, second or third specific implementation modes.

[0118] Specific implementation method five: Combination Figures 1 to 7 To illustrate this embodiment, the calculation process of the rib height h1 of the inner ring small rib in step 4 of this embodiment is as follows:

[0119]

[0120] d3: inner ring small rib diameter;

[0121] d1: Maximum diameter of the inner ring raceway;

[0122] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0123] L n : The length of roller 200;

[0124] r1: Maximum dimension of axial chamfer of small end of roller 200.

[0125] Other components and connection relationships are the same as those of the first, second, third or fourth specific implementation modes.

[0126] Specific implementation method six: Combination Figures 1 to 7This embodiment is described. This embodiment also provides a method for optimizing the design of an inner component of a tapered roller bearing. The inner component includes a cage 100, an inner ring, and a plurality of rollers 200. A plurality of pockets are formed on the circumferential surface of the cage 100 in a circumferential array, and a first pocket locking point and a second pocket locking point are integrally provided on each pocket beam. Further, the method is specifically performed in the following steps:

[0127] S1, calculate the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction, the width direction of the first pocket locking point is the same as the width direction of the retaining frame 100, and the first pocket locking point is close to the small end face of the pocket;

[0128] The calculation process of the roller diameter △1 corresponding to the center of the width direction of the first pocket locking point is as follows:

[0129]

[0130] Where:

[0131] △: The big end diameter of roller 200;

[0132] The angle between the generatrix of the roller 200 and the axis of the roller 200;

[0133] L n : The length of roller 200;

[0134] L b1 : The distance from the small end face of the pocket to the small end face of the cage 100;

[0135] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0136] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retainer 100;

[0137] S2. Calculate the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction. The width direction of the second pocket locking point is the same as the width direction of the retainer 100, and the second pocket locking point is close to the large end surface of the pocket. The calculation process of the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction is as follows:

[0138]

[0139] Where:

[0140] △: The big end diameter of roller 200;

[0141] The angle between the generatrix of the roller 200 and the axis of the roller 200;

[0142] L n : The length of roller 200;

[0143] L b1 : The distance from the small end face of the pocket to the small end face of the cage 100;

[0144] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retainer 100;

[0145] S3, step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller 200;

[0146] The calculation process of the first maximum sinking amount y1 is as follows:

[0147]

[0148] The calculation process of the second maximum sinking amount y2 is as follows:

[0149]

[0150] Where:

[0151] D C1 : The outer diameter of the outer circumference of the first pocket locking point;

[0152] D C2 : The outer diameter of the outer circumference of the second pocket locking point;

[0153] θ: Angle between the generatrix of the cage 100 and the axis of the cage 100;

[0154] A1: The width of the first and second pocket locking points;

[0155] h: the locking point thickness of the first pocket locking point and the second pocket locking point, the locking point thickness direction is the diameter direction of the cage 100;

[0156] △1: The roller diameter corresponding to the center of the first pocket locking point in the width direction;

[0157] △2: The roller diameter corresponding to the center of the second pocket locking point in the width direction;

[0158] d1: Maximum diameter of the inner ring raceway;

[0159] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0160] L n : The length of roller 200;

[0161] L b1: The distance from the small end face of the pocket to the small end face of the cage 100;

[0162] L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction;

[0163] L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retainer 100;

[0164] S4. Calculate the rib height h1 of the inner ring small rib. The calculation process of the rib height h1 of the inner ring small rib is as follows:

[0165]

[0166] d3: inner ring small rib diameter;

[0167] d1: Maximum diameter of the inner ring raceway;

[0168] β: The angle between the inner ring raceway generatrix and the inner ring axis;

[0169] L n : The length of roller 200;

[0170] r1: Maximum size of the axial chamfer of the small end of roller 200;

[0171] S5. Compare the sizes of y1, y2 and h1. When y1 and y2 are both greater than or equal to h1, the internal component does not meet the design requirements and needs to be optimized. The specific optimization method is as follows:

[0172] Increase the inner ring small rib diameter d3 to increase the rib height h1 until y1 and y2 are both smaller than h1;

[0173] Or reduce the outer diameter D of the outer circumference of the first pocket locking point C1 , reduce the outer diameter D of the outer circumference of the second pocket locking point C2 , thereby reducing y1 and y2 until both y1 and y2 are smaller than h1.

[0174] In this embodiment, since the cross section of the inner ring small rib is a trapezoid, when the inner ring small rib diameter d3 is increased, the width of the inner ring small rib will be reduced, and thus the width of the inner ring small rib side retainer (i.e., the width of the small end of the retainer 100) will inevitably be reduced. C2 Therefore, the inner ring small rib diameter d3 is adjusted under the condition of ensuring the strength of the cage 100; similarly, D C1 and D C2 It is inevitable to reduce the distance S2 from the outer diameter of the locking point to the inner diameter of the cage, so D should also be adjusted under the condition of ensuring the strength of the cage 100. C1and D C2 The value of .

[0175] If one of the above optimization methods cannot meet the requirement that both y1 and y2 are less than h1, both optimization methods can be used at the same time.

[0176] Other components and connection relationships are the same as those of the first, second, third or fourth specific implementation modes.

[0177] The present invention has been disclosed as above in the form of a preferred embodiment, but it is not intended to limit the present invention. Any simple modification, equivalent changes and modifications made to the above implementation cases by any professional and technical personnel who do not deviate from the content of the technical solution of the present invention and based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A design and verification method for an inner component of a tapered roller bearing, the inner component comprising a cage (100), an inner ring and a plurality of rollers (200), a plurality of pockets being formed on a circumferential surface of the cage (100) in a circumferential array, and a first pocket locking point and a second pocket locking point being integrally provided on each pocket beam; Features: The method is specifically carried out in the following steps: Step 1, calculating the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction, the width direction of the first pocket locking point is the same as the width direction of the retaining frame (100), and the first pocket locking point is close to the small end face of the pocket; Step 2, calculating the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction, the width direction of the second pocket locking point is the same as the width direction of the retaining frame (100), and the second pocket locking point is close to the large end surface of the pocket; Step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller (200); Step 4, calculate the rib height h1 of the inner ring small rib; Step 5: Compare the sizes of y1, y2 and h1. When y1 and y2 are both smaller than h1, the internal components meet the design requirements.

2. The method for designing and verifying the inner components of a tapered roller bearing according to claim 1, characterized in that: The calculation process of the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction in the step 1 is as follows: Where: △: The diameter of the large end of the roller (200); An angle between a generatrix of the roller (200) and an axis of the roller (200); L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction; L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100).

3. The method for designing and verifying the inner components of a tapered roller bearing according to claim 2, characterized in that: The calculation process of the roller diameter △2 corresponding to the center of the second pocket locking point in the width direction in step 2 is as follows: Where: △: The diameter of the large end of the roller (200); An angle between a generatrix of the roller (200) and an axis of the roller (200); L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100).

4. The method for designing and verifying the inner components of a tapered roller bearing according to claim 3, characterized in that: The calculation process of the first maximum sinking amount y1 of the roller (200) in step 3 is as follows: The calculation process of the second maximum sinking amount y2 of the roller (200) in step 3 is as follows: Where: D C1 : The outer diameter of the outer circumference of the first pocket locking point; D C2 : The outer diameter of the outer circumference of the second pocket locking point; θ: the angle between the generatrix of the cage (100) and the axis of the cage (100); A1: The width of the first and second pocket locking points; h: the locking point thickness of the first pocket locking point and the second pocket locking point, the locking point thickness direction being the diameter direction of the retaining frame (100); △1: The roller diameter corresponding to the center of the first pocket locking point in the width direction; △2: The roller diameter corresponding to the center of the second pocket locking point in the width direction; d1: Maximum diameter of the inner ring raceway; β: The angle between the inner ring raceway generatrix and the inner ring axis; L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction; L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100).

5. The method for designing and verifying the inner components of a tapered roller bearing according to claim 4, characterized in that: The calculation process of the rib height h1 of the inner ring small rib in step 4 is as follows: d3: inner ring small rib diameter; d1: Maximum diameter of the inner ring raceway; β: The angle between the inner ring raceway generatrix and the inner ring axis; L n : length of roller (200); r1: Maximum dimension of axial chamfer of small end of roller (200).

6. A method for optimizing the design of an inner component of a tapered roller bearing, the inner component comprising a cage (100), an inner ring and a plurality of rollers (200), a plurality of pockets being formed on a circumferential surface of the cage (100) in a circumferential array, and a first pocket locking point and a second pocket locking point being integrally provided on each pocket beam; characterized in that: The method is specifically carried out in the following steps: S1, calculating the roller diameter △1 corresponding to the center of the first pocket locking point in the width direction, the width direction of the first pocket locking point is the same as the width direction of the retaining frame (100), and the first pocket locking point is close to the small end face of the pocket; The calculation process of the roller diameter △1 corresponding to the center of the width direction of the first pocket locking point is as follows: Where: △: The diameter of the large end of the roller (200); An angle between a generatrix of the roller (200) and an axis of the roller (200); L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction; L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100); S2. Calculate the roller diameter △2 corresponding to the center of the second pocket hole locking point in the width direction, the width direction of the second pocket hole locking point is the same as the width direction of the retaining frame (100), and the second pocket hole locking point is close to the large end surface of the pocket hole; the calculation process of the roller diameter △2 corresponding to the center of the second pocket hole locking point in the width direction is as follows: Where: △: The diameter of the large end of the roller (200); An angle between a generatrix of the roller (200) and an axis of the roller (200); L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100); S3, step 3, using △1 or △2 to calculate the first maximum sinking amount y1 and the second maximum sinking amount y2 of the roller (200); The calculation process of the first maximum sinking amount y1 is as follows: The calculation process of the second maximum sinking amount y2 is as follows: Where: D C1 : The outer diameter of the outer circumference of the first pocket locking point; D C2 : The outer diameter of the outer circumference of the second pocket locking point; θ: the angle between the generatrix of the cage (100) and the axis of the cage (100); A1: The width of the first and second pocket locking points; h: the locking point thickness of the first pocket locking point and the second pocket locking point, the locking point thickness direction being the diameter direction of the retaining frame (100); △1: The roller diameter corresponding to the center of the first pocket locking point in the width direction; △2: The roller diameter corresponding to the center of the second pocket locking point in the width direction; d1: Maximum diameter of the inner ring raceway; β: The angle between the inner ring raceway generatrix and the inner ring axis; L n : length of roller (200); L b1 : The distance from the small end face of the pocket to the small end face of the cage (100); L b2 : The distance from the center of the first pocket hole locking point in the width direction to the center of the second pocket hole locking point in the width direction; L b3 : The distance from the center of the second pocket locking point in the width direction to the end face of the small end of the retaining frame (100); S4. Calculate the rib height h1 of the inner ring small rib. The calculation process of the rib height h1 of the inner ring small rib is as follows: d3: inner ring small rib diameter; d1: Maximum diameter of the inner ring raceway; β: The angle between the inner ring raceway generatrix and the inner ring axis; L n : length of roller (200); r1: Maximum dimension of axial chamfer of small end of roller (200); S5. Compare the sizes of y1, y2 and h1. When y1 and y2 are both greater than or equal to h1, the internal component does not meet the design requirements and needs to be optimized. The specific optimization method is as follows: Increase the inner ring small rib diameter d3 to increase the rib height h1 until y1 and y2 are both smaller than h1; Or reduce the outer diameter D of the outer circumference of the first pocket locking point C1 , reduce the outer diameter D of the outer circumference of the second pocket locking point C2 , thereby reducing y1 and y2 until both y1 and y2 are less than h1.

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