A preparation method for a low-friction raceway textured surface of a rolling bearing

Abstract

The present invention discloses a preparation method for a textured surface of a low-friction raceway of a rolling bearing. By establishing a lubricating oil film distribution model for the textured surface of the low-friction raceway, inversely solving the optimal size distribution of the surface texture, laser processing the surface micro-texture, performing deterministic polishing on the raceway profile binding force rheology, and testing the service performance of the bearing, a textured surface is established on the bearing raceway, enabling the lubricating medium to be stored on the bearing raceway, improving the lubrication performance of the bearing, effectively solving the contradiction between the current requirements of high-speed precision bearings for effectively storing the lubricating medium and a super-smooth and low-damage working surface, and being beneficial to the application and popularization of the above preparation method in the field of precision and ultra-precision machining technology.

Description

Technical Field

[0001] The invention relates to the technical field of precision and ultra-precision machining, and is a method for preparing a low-friction raceway textured surface of a rolling bearing. Background Art

[0002] Rolling bearings are precision mechanical components that convert sliding friction between a rotating shaft and its seat into rolling friction, thereby reducing friction losses. Rolling bearings generally consist of four parts: an inner ring, an outer ring, rolling elements, and a cage. The inner ring mates with the shaft and rotates with it; the outer ring mates with the bearing seat and provides support; the rolling elements are evenly distributed between the inner and outer rings by the cage, and their shape, size, and number directly affect the performance and life of the rolling bearing. The cage evenly distributes the rolling elements, guiding their rotation and providing lubrication.

[0003] With the development of industrialization, high-speed precision rolling bearings are the core basic components that determine whether high-end equipment such as high-end machine tools, high-speed railways, aircraft engines, wind power generation, etc. can achieve high-performance and stable operation. They are of great strategic significance to the national economy and national security.

[0004] The raceway surface is the primary working surface in rolling bearings. Its surface quality is one of the most critical technical indicators determining bearing performance, directly impacting bearing lubrication performance. Furthermore, it is widely recognized in the domestic manufacturing of such bearings that excessively low raceway surface roughness prevents effective lubrication storage at high speeds, negatively impacting bearing lubrication performance. Therefore, resolving the conflict between high-speed precision bearings' need for effective lubrication storage and an ultra-smooth, low-damage working surface is crucial for overcoming the bottleneck limiting further performance improvements in high-speed precision bearings and is an urgent issue. Summary of the Invention

[0005] In order to overcome the defects in the above-mentioned prior art, the object of the present invention is to provide a method for preparing a low-friction raceway textured surface of a rolling bearing. This method arranges a textured surface on the bearing raceway so that the lubricating medium can be stored on the bearing, thereby improving the lubrication performance of the bearing, which is conducive to the application and promotion of the method in the field of precision and ultra-precision machining technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: a method for preparing a low-friction raceway textured surface of a rolling bearing, comprising the following steps: step 1, establishing a lubricating oil film distribution model for the low-friction raceway textured surface; step 2, inversely determining the optimal size distribution of the surface texture; step 3, laser processing surface microtexture; step 4, rheological deterministic polishing of the raceway profile constraint force; step 5, bearing service performance test.

[0007] As a preferred embodiment of the present invention, the establishment of the lubricating oil film distribution model for the low-friction raceway textured surface includes the following steps: (1) constructing the textured raceway surface after elastic deformation; (2) constructing the elastic hydrodynamic lubricating oil film thickness distribution equation.

[0008] As a preferred embodiment of the present invention, the construction of the textured raceway surface after elastic deformation is constructed by simulating the distribution of micro-textures on the smooth surface after ultra-precision polishing based on variables such as the surface roughness of the ring raceway, the material properties of the ring, and the properties of the lubricating grease.

[0009] As a preferred embodiment of the present invention, the inverse solution of the optimal size distribution of the surface texture includes the following steps: (1) analyzing the influence of the texture interface profile on the friction performance; (2) analyzing the influence of the texture area ratio on the hydrodynamic efficiency; (3) the inverse calculation model of the characteristics and distribution of the micro-textures on the raceway surface.

[0010] As a preferred embodiment of the present invention, the laser processing of the surface micro-texture includes the following steps: (1) obtaining the laser ablation threshold of different bearing materials through experiments; (2) precisely controlling the micro-texture depth and profile shape; (4) characterizing the depth of subsurface damage on the initial (precision grinding) surface to determine the subsequent polishing allowance; (5) high-quality and high-efficiency laser processing of the large-area surface micro-texture array.

[0011] As a preferred embodiment of the present invention, the laser processing uses femtosecond laser technology to perform micro-texture processing on the raceway surface after precision grinding.

[0012] As a preferred embodiment of the present invention, the deterministic polishing of the raceway profile with constrained rheology of force includes the following steps: (1) formulating a strategy for suppressing processing damage; (2) establishing a material removal function model; (3) optimizing the design of the constrained correction module for the raceway profile of the ring raceway with force rheology polishing; (4) determining the cross-sectional profile compensation amount during the laser processing of the surface micro-texture; (5) high-precision and low-damage processing of the ring raceway of the high-speed precision rolling bearing.

[0013] As a preferred embodiment of the present invention, the force rheology polishing is the mutual movement of the polishing fluid medium and the bearing raceway to achieve the polishing of the high-precision curved surface of the bearing raceway.

[0014] As a preferred embodiment of the present invention, the deterministic polishing of the raceway profile with constrained rheology of force can actively control the polishing flow field, precisely control the distribution of the material removal rate within the polishing area, and achieve the deterministic low-damage removal of the material on the raceway surface to ensure the profile accuracy of the ring raceway.

[0015] As a preferred embodiment of the present invention, the service performance test of the bearing includes the following steps: (1) Conduct friction and wear tests on different textured surfaces; (2) Test the service performance of the textured bearing under high-speed conditions; (3) Analyze the damage of the textured surface of the raceway of the ring after operation; (4) Establish a quantitative mapping relationship between the texture characteristics of the raceway surface and the friction and lubrication performance of the bearing; (5) Feedback and correct the inverse calculation model of the texture characteristics and distribution.

[0016] Compared with the prior art, it has the following beneficial effects:

[0017] 1. A method for preparing a low-friction raceway textured surface of a rolling bearing in the present invention establishes a lubricating oil film distribution model for the low-friction raceway textured surface, inversely calculates the optimal size distribution of the surface texture, laser-processes the surface micro-texture, performs deterministic polishing on the raceway profile with constraint of the flow of force, and conducts service performance tests of the bearing, etc., to establish a textured surface on the bearing raceway, enabling the lubricating medium to be stored on the bearing, improving the lubrication performance of the bearing, and being conducive to the application and popularization of the above preparation method in the field of precision and ultra-precision machining technology.

[0018] 2. The laser processing of the surface micro-texture in this method uses femtosecond laser technology to perform micro-texture processing on the surface of the raceway after precision grinding. The laser can accurately and effectively process on the bearing raceway, improving the processing accuracy and efficiency of the textured surface of the bearing raceway.

[0019] 3. The deterministic polishing of the raceway profile with constraint of the flow of force in this method uses the flow of force polishing technology to grind the surface of the textured grinding raceway with the polishing fluid medium, making the surface of the bearing raceway smoother, reducing the surface roughness of the bearing raceway, and achieving high-precision and low-damage processing of the surface of the raceway of the high-speed precision rolling bearing ring under the constraint of the profile. Description of the Drawings

[0020] Figure 1 is the main implementation flowchart of a method for preparing a low-friction raceway textured surface of a rolling bearing in the embodiment;

[0021] Figure 2 is the implementation technical route map of a method for preparing a low-friction raceway textured surface of a rolling bearing in the embodiment;

[0022] Figure 3 is the structural schematic diagram of the texture of the bearing raceway surface after laser processing in a method for preparing a low-friction raceway textured surface of a rolling bearing in the embodiment. Detailed Embodiments

[0023] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0025] The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings.

[0026] As Figures 1 to 3 shown, a preparation method for a textured surface of a low-friction raceway of a rolling bearing includes the following steps: Step 1, establishing a lubricating oil film distribution model for the textured surface of the low-friction raceway; Step 2, inversely solving the optimal size distribution of the surface texture; Step 3, laser processing the surface micro-texture; Step 4, rheological deterministic polishing of the constraint force of the raceway profile; Step 5, testing the service performance of the bearing. The above-mentioned testing of the service performance of the bearing is to analyze and verify the friction and lubrication performance of the obtained textured raceway surface. By using the above method to establish a textured surface on the bearing raceway, lubricating media can be stored on the bearing, improving the lubrication performance of the bearing.

[0027] In this embodiment, the lubricating oil film distribution model of the low-friction raceway textured surface is established, and the optimal size distribution of the inverse-found surface texture is obtained. First, according to variables such as the surface roughness of the raceway, the material properties of the raceway, and the characteristics of the lubricating grease, the distribution of micro-textures on a smooth surface (the surface roughness Ra value is less than 10 nm) after ultra-precision polishing is simulated. Then, a model of the micro-textured surface after elastic deformation in the elastohydrodynamic lubrication (referred to as EHL) state is established to analyze the influence of elastic deformation on the topography parameters of the ball-raceway point contact interface. Based on the rheological characteristics analysis of the lubricating medium and the surface topography after deformation, a CFD model in the bearing cavity is established, the lubricating oil film thickness distribution equation is constructed, the influence of surface texture on the lubricating oil film distribution is analyzed, and the influence law of different micro-texture cross-sectional profiles on the friction performance of the surface is explored. Then, combined with different service conditions of the bearing (load, speed, service temperature, etc.), the optimal shape, size, and distribution of the surface dot matrix micro-texture of the raceway are inversely found. Through the establishment of the lubricating oil film distribution model of the low-friction raceway textured surface, a basic lubricating oil film distribution model is provided for the inverse-found optimal size distribution of the surface texture. Then, through the above-mentioned inverse-found optimal size distribution of the surface texture, the size distribution of the surface texture is determined, which provides convenience for subsequent laser processing.

[0028] In this embodiment, the specific methods for establishing the lubricating oil film distribution model of the low-friction raceway textured surface and inversely finding the optimal size distribution of the surface texture are as follows. Since in the presence of a lubricant, the law of pressure distribution no longer conforms to Hertz theory but depends on the balance between the shear flow component and the pressure hydrodynamic component, both of which are functions of the geometric clearance. In the actual working condition, the rolling elements and raceways in a rolling bearing are in the EHL state, and the contact stress reaches the order of GPa. At this time, the elastic deformation of the bearing steel surface is several orders of magnitude larger than the minimum film thickness. Therefore, the elastic deformation of the contact interface cannot be ignored, and this elastic deformation will inevitably affect the topography of the raceway surface, thereby changing the topography parameters and affecting the lubricating oil film distribution. Due to the high contact stress, the film thickness h itself is also a function of pressure. The sizes of the rolling elements and raceways are much larger than the size of the Hertz contact area and the elastic deformation amount is relatively small. Considering the rolling elements and raceways as semi-infinite elastic bodies, the Reynolds equation for the steady-state EHL of point contact is simplified, and the film thickness h can be expressed by the following formula:

[0029]

[0030] Where \(R(x, y, t)\) is the initial surface topography (the topography height amplitude is \(A_i\)), \(\delta(t)\) is the surface deformation under the action of the oil film pressure, \(R_x\) and \(R_y\) are the equivalent curvature radii of the contact interface in the \(x\) and \(y\) directions respectively, and \(E\) is the equivalent elastic modulus. That is, the Amplitude Reduction (AR) algorithm is used to perform a fast Fourier transform on the initial surface, introduce complete three-dimensional surface features, and obtain the ratio of the deformed surface topography amplitude to the initial surface topography amplitude; then perform an inverse Fourier transform on the deformed surface frequency components to reconstruct the surface features, and the surface topography of the raceway after elastic deformation can be obtained. After that, based on the rheological characteristics analysis of the lubricating medium, combined with the established CFD model, the elastic hydrodynamic lubricating oil film thickness distribution is solved, the influence of different micro-texture cross-sectional profiles on the surface friction performance is compared, the influence laws of the texture cross-sectional profile on the oil film load-carrying capacity and the texture area ratio on the hydrodynamic effect are analyzed, and the optimal shape, size and distribution of the micro-texture on the raceway surface are obtained by inverse solution.

[0031] In order to accurately and effectively machine the surface of the bearing raceway, a laser machining surface micro-texture is set, and the femtosecond laser technology is used to machine the micro-texture on the surface of the raceway after precision grinding. First, the laser ablation thresholds of different bearing materials are obtained through experiments; the influence of different pulse energies and pulse numbers on the texture morphology is analyzed, and the relationship expression between the texture depth and the laser pulse energy and number is fitted to achieve precise control of the micro-texture depth; the influence of the laser repetition frequency, laser scanning speed and scanning times on the micro-texture morphology is analyzed to achieve precise control of the micro-texture cross-sectional profile; the sub-surface damage depth of the initial surface (precision grinding surface) is observed and determined by using sub-surface feature characterization means, and the material removal amount of subsequent raceway force rheological precision polishing is calculated; the scanning path with the best laser machining quality and efficiency for the large-area surface micro-texture array is explored to realize the laser machining of the bearing raceway surface, and the machining precision and efficiency of the textured surface of the bearing raceway are improved.

[0032] The specific method for femtosecond laser processing of the above-mentioned raceway surface micro-texture is as follows: First, obtain the laser ablation thresholds of different bearing materials through laser experiments on the raceway surface; analyze the influence of different pulse energies and pulse numbers on the texture morphology, fit the relationship expression between the texture depth and the laser pulse energy and number to achieve precise control of the micro-texture depth; analyze the influence of parameters such as laser repetition frequency, laser scanning speed, scanning times, and pulse width on the micro-texture morphology, establish a texture profile evolution model to achieve precise control of the micro-texture cross-sectional profile; use sub-surface feature characterization means to observe and determine the sub-surface damage depth of the initial surface (precision grinding surface), calculate the material removal amount of subsequent raceway force rheology precision polishing, and accurately reserve the polishing removal allowance during laser processing of the micro-texture; obtain the scanning path with the best laser processing quality and efficiency for the large-area surface micro-texture array. The specific operation is to use a high-power femtosecond laser system Pharos-15W to process the surface of bearing steel (GCr15). The laser amplification system outputs a pulse width of 35 fs, a central wavelength of 800 nm, a repetition frequency of 1 kHz, the light intensity is nearly Gaussian distribution, the polarization direction is parallel to the scanning speed direction, the average laser power is continuously adjustable within 0 - 3 W, and the energy is detected online by a power meter; the pulsed beam with a spot diameter of 8 mm is vertically focused on the front surface of the sample through a lens with a focal length of 3.1 mm and a numerical aperture of 0.45. The processed micro-texture has good size consistency, uniform profile, and good processing accuracy.

[0033] In order to reduce the surface roughness of the bearing raceway after laser processing, a raceway profile constraint force rheology deterministic polishing is set. The textured grinding raceway surface is processed by force rheology polishing to remove damage and reduce the surface roughness. During the polishing process, the relative movement between the polishing fluid medium prepared with a non-Newtonian power-law fluid as the base fluid and the workpiece causes it to be subjected to shear force, resulting in a force rheology phenomenon. The solid-phase particles aggregate into a large number of particle clusters and wrap the abrasive grains in them to form a flexible fixed abrasive tool. The good surface shape adaptability is achieved by the fluidity of the fluid to complete the polishing of the high-precision curved surface of the raceway. This method can effectively avoid the limitation of the existing raceway surface oilstone honing processing technology by the pure mechanical removal principle, and achieve high-precision and low-damage processing of the raceway surface of the high-speed precision rolling bearing ring under profile constraint.

[0034] The key technologies for deterministic polishing of the raceway profile with binding force rheology include formulating a suppression strategy for processing damage, establishing a material removal function model, and optimizing the design of the raceway profile constraint correction module for ring raceway force rheology polishing. The specific method is as follows: First, use instruments such as ultra-depth-of-field microscopes and white light interferometers to evaluate the surface texture morphology, contour shape, and surface roughness, and evaluate the quality of laser processing and force rheology polishing; then use technical means such as angle polishing, surface cross-section corrosion observation, focused ion beam milling for surface cutting, and transmission electron microscopy observation to evaluate the subsurface damage of the raceway and the heat-affected area of laser processing; use X-ray diffraction (XRD) technology to measure the surface residual stress after processing to comprehensively measure the quality of laser processing and force rheology polishing. At the same time, based on the subsurface characteristics, compare the material damage mechanisms in the polishing process. On the basis of studying the microscopic material removal mechanisms such as the sliding, plowing, and cutting of abrasive grains and workpieces, obtain the influence laws of the material removal process on surface roughness, residual stress, changes in crystal phase structure, and the processed hard layer and other surface qualities, and obtain the generation mechanisms and suppression strategies for damages such as scratches, cracks, and microdefects during the processing, and finally obtain a textured low-damage surface. Then, during the force rheology polishing process, process the surface after laser processing of microtextures, precisely control the material removal depth, ensure the accuracy of the final raceway surface texture contour shape, and obtain the action mechanism of abrasive grains and raceway surface materials and the material removal mechanism. Then, according to the influence laws of factors such as the rheological properties of the polishing medium, abrasive grain size, polishing linear velocity, and solid phase particles on the material removal rate, construct a material removal function based on the Preston equation, precisely specify the material removal depth of the raceway surface, and compare and optimize the polishing process parameters to obtain a low-damage surface with the best quality. Compare the deformation degree of the surface texture cross-section contour after polishing to obtain the cross-section contour compensation amount during the laser processing of surface microtextures, which can ensure the coincidence degree of the surface texture cross-section contour after polishing and the result of reverse calculation.

[0035] To ensure the surface smoothness of the bearing raceway after machining and the ability to store lubricating medium, it is necessary to set up bearing service performance tests, that is, the analysis and verification of the friction and lubrication performance of the textured raceway surface. Friction and wear tests are carried out on different textured surfaces to verify the influence of micro-textures on the characteristics of point contact friction and counter friction. The T30-70 bearing high-speed test machine is used to test the service performance (life, vibration, temperature rise, etc.) of the textured bearing under high-speed conditions, evaluate the improvement effect of surface textures on the bearing friction and lubrication performance, and further correct the theoretical calculation model of the raceway surface texture distribution based on the test results to improve the accuracy of the theoretical calculation model. At the same time, microscopic morphology observation, surface roughness measurement, and surface 3D profile scanning are carried out on the raceway surface of the ring after operation to analyze the surface damage of the textured raceway, evaluate its anti-wear characteristics, establish a surface damage evolution and life prediction model for the textured raceway, obtain the quantitative mapping relationship between the raceway surface texture characteristics and the bearing friction and lubrication performance, and accordingly feedback and correct the texture characteristics and distribution inverse calculation model to realize the optimized design of the surface texture, and finally obtain a non-destructive textured surface of the raceway with the best friction and lubrication performance, realizing the improvement of the lubrication performance of high-speed precision rolling bearings.

[0036] A method for preparing a low-friction raceway textured surface of a rolling bearing provided in this embodiment proposes an inverse design method for the micro-textures on the raceway surface. Based on the rheological characteristics analysis of the lubricating medium, a lubricating oil film distribution model on the raceway surface after elastic deformation is established, and the optimal shape, size, and distribution of the dot matrix micro-textures on the raceway surface are inversely obtained to guide the micro-texture processing. And based on the active flow field control strategy, a method for deterministic polishing of the ring raceway profile binding force rheology is proposed, which can actively control the polishing flow field, accurately control the material removal rate distribution in the polishing area, and realize the deterministic low-damage removal of the raceway surface material, thus ensuring the profile accuracy of the ring raceway. Finally, through the extraction of the bearing service performance characteristic information and the analysis of the degradation behavior of the raceway textured surface morphology during the service process, the mapping relationship between the textured raceway surface characteristics and the bearing service performance is quantified, and the influence of the textured surface morphology on the bearing raceway friction and lubrication performance is quantitatively analyzed, so as to predict the service effect of the precision rolling bearing according to the quantified raceway surface characteristics. This method effectively solves the contradiction between the current requirements of high-speed precision bearings for effectively storing lubricating medium and super-smooth low-damage working surfaces.

[0037] A method for preparing a low-friction raceway textured surface of a rolling bearing in this embodiment establishes a lubricating oil film distribution model for the low-friction raceway textured surface, inversely obtains the optimal size distribution of the surface texture, laser processes the surface micro-textures, performs deterministic polishing of the raceway profile binding force rheology, and conducts bearing service performance tests and other steps to establish a textured surface on the bearing raceway, enabling the lubricating medium to be stored on the bearing, improving the bearing lubrication performance, and facilitating the application and popularization of the above preparation method in the field of precision and ultra-precision machining technology.

[0038] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0039] Although terms such as reference numerals in the drawings are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the essence of the present invention; construing them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A preparation method for a low-friction raceway textured surface of a rolling bearing, characterized in that: It includes the following steps: Step 1: Establish a lubricating oil film distribution model for the textured surface of the low-friction raceway; Step 2: Inversely calculate the optimal size distribution of the surface texture; Step 3: Laser process the surface micro-texture; Step 4: Perform deterministic polishing on the raceway profile with constraint of rheological force; Step 5: Test the service performance of the bearing; The establishment of the lubricating oil film distribution model for the textured surface of the low-friction raceway includes the following steps: (1) Construct the textured raceway surface after elastic deformation; (2) Construct the equation for the thickness distribution of the elastohydrodynamic lubricating oil film; The construction of the textured raceway surface after elastic deformation is carried out by simulating the distribution of micro-textures on the smooth surface after ultra-precision polishing according to variables such as the surface roughness of the ring raceway, the material properties of the ring, and the properties of the lubricating grease; The inverse calculation of the optimal size distribution of the surface texture includes the following steps: (1) Analyze the influence of the texture interface profile on the friction performance; (2) Analyze the influence of the texture area ratio on the hydrodynamic efficiency; (3) The inverse calculation model for the characteristics and distribution of the micro-textures on the raceway surface; The test of the bearing service performance includes the following steps: (1) Conduct friction and wear tests on different textured surfaces; (2) Test the service performance of the textured bearing under high-speed conditions; (3) Analyze the damage of the textured surface of the ring raceway after operation; (4) Establish a quantitative mapping relationship between the characteristics of the raceway surface texture and the friction and lubrication performance of the bearing; (5) Perform feedback correction on the inverse calculation model for the texture characteristics and distribution; 2. A preparation method for a low-friction raceway textured surface of a rolling bearing according to claim 1, characterized in that: The laser processing of the surface micro-texture includes the following steps: (1) Obtain the laser ablation threshold of different bearing materials through experiments; (2) Precisely control the depth and contour shape of the micro-texture; (4) Characterize the depth of the subsurface damage of the initial (precision grinding) surface to determine the subsequent polishing allowance; (5) High-quality and high-efficiency laser processing of the large-area surface micro-texture array; 3. A preparation method for a low-friction raceway textured surface of a rolling bearing according to claim 2, characterized in that: The laser processing uses femtosecond laser technology to perform micro-texture processing on the raceway surface after precision grinding; 4. A method for preparing a surface with textured low-friction raceways of a rolling bearing according to claim 1, characterized in that: The deterministic polishing on the raceway profile with constraint of rheological force includes the following steps: (1) Develop a strategy for suppressing processing damage; (2) Establish a material removal function model; (3) Optimize the design of the constraint correction module for the raceway profile of the ring raceway with rheological force polishing; (4) Determine the cross-section profile compensation amount during the laser processing of the surface micro-texture; (5) High-precision and low-damage processing of the ring raceway of the high-speed precision rolling bearing; 5. A preparation method for a low-friction raceway textured surface of a rolling bearing according to claim 4, characterized in that: The rheological force polishing is the mutual movement of the polishing fluid medium and the bearing raceway to achieve the polishing of the high-precision curved surface of the bearing raceway; 6. A preparation method for a textured surface with low friction of a rolling bearing raceway according to claim 4, characterized in that: The deterministic polishing on the raceway profile with constraint of rheological force can actively control the polishing flow field, precisely control the distribution of the material removal rate within the polishing area, and achieve deterministic low-damage removal of the material on the raceway surface to ensure the profile accuracy of the ring raceway.

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