阅读说明：本技术 一种滚动轴承内圈滚道及滚动轴承 (Rolling bearing inner ring raceway and rolling bearing ) 是由 纪敬虎 田朋霖 陈天阳 王浩 符永宏 华希俊 于 2019-08-12 设计创作，主要内容包括：本发明提供了一种滚动轴承内圈滚道及滚动轴承,所述滚动轴承内圈的滚道表面中心区域内设有动力润滑织构,所述动力润滑织构用于将滚道表面与滚动体表面分离,避免产生干摩擦；所述滚道表面侧边区域设有储油织构,且所述滚道表面侧边区域为滚道表面中心区域两侧的对称区域,用于在高负载下形成连续油膜；所述滚道表面上设有布油织构,且所述布油织构与动力润滑织构和储油织构部分重叠,用于使润滑油沿着滚动体运动方向运动。本发明可以通过动力润滑织构、储油织构和布油织构共同改善运行稳定性和润滑状况。(The invention provides a rolling bearing inner ring raceway and a rolling bearing, wherein a dynamic lubrication texture is arranged in the central area of the raceway surface of the rolling bearing inner ring, and is used for separating the raceway surface from the rolling body surface so as to avoid generating dry friction; the side edge area of the surface of the raceway is provided with an oil storage texture and is a symmetrical area at two sides of the central area of the surface of the raceway and used for forming a continuous oil film under high load; and the surface of the roller path is provided with an oil distribution texture which is partially overlapped with the dynamic lubrication texture and the oil storage texture and is used for enabling the lubricating oil to move along the motion direction of the rolling body. The invention can improve the operation stability and the lubrication condition through the dynamic lubrication texture, the oil storage texture and the oil distribution texture.)

1. A rolling bearing inner ring raceway is characterized in that a dynamic lubrication texture is arranged in the central area of the raceway surface of a rolling bearing inner ring (1), and the dynamic lubrication texture is used for separating the raceway surface from the surface of a rolling body (2) so as to avoid dry friction; the side edge area of the surface of the raceway is provided with an oil storage texture and is a symmetrical area at two sides of the central area of the surface of the raceway and used for forming a continuous oil film under high load; and the surface of the raceway is provided with an oil distribution texture which is partially overlapped with the dynamic lubrication texture and the oil storage texture and is used for enabling lubricating oil to move along the motion direction of the rolling body (2).

2. An inner race raceway for a rolling bearing according to claim 1 wherein the cross-sectional curvature of the central region of the raceway surface has a curvature of arc θ₁The radian theta of the cross section curve of the raceway of the inner ring (1) of the rolling bearing₀The relationship of (1) is: theta₁/θ₀10-50%; the unilateral curve radian theta of the cross section of the side edge area of the surface of the roller path₂The radian theta of the cross section curve of the raceway of the inner ring (1) of the rolling bearing₀The relationship of (1) is: 2 theta₂/θ₀50-90%; the radian theta of the cross section curve of the surface area of the roller path with the oil distribution texture₃The radian theta of the cross section curve of the raceway of the inner ring (1) of the rolling bearing₀The relationship of (1) is: theta₃/θ₀＝10-95％。

3. The rolling bearing inner ring raceway according to claim 1, wherein the dynamic lubrication texture is a micro-pit morphology with uniform lattice distribution, and the micro-pit morphology parameters are as follows: d₁＝20-100μm,h₁5-30 μm; the distribution parameters of the uniform lattice of the micro pits are as follows: rho₁＝5-30％,Wherein: d₁The texture micro-pit shape diameter is dynamically lubricated; h is₁Dynamically lubricating the texture micro-pit appearance depth; rho₁The ratio of the shape area of the power lubrication texture micro-pit to the area of the central area of the surface of the roller path is shown; a is₁Is the radial distance between the micro-pit features of adjacent dynamic lubrication textures; b₁Is the circumferential distance between the micro-pit features of adjacent dynamic lubrication textures.

4. The rolling bearing inner ring raceway according to claim 1, wherein the oil storage texture is a micro-pit morphology with uniform lattice distribution, and the micro-pit morphology parameters are: d₂＝50-200μm,h₂1-15 μm, the uniform lattice distribution parameters of the micro pits are as follows: rho₂＝2-15％,

5. The rolling bearing inner ring raceway according to claim 1, wherein the oil distribution texture is regularly distributed micro-groove morphology, and the micro-groove morphology parameters are: b20-100 μm, h₃1-15 μm; wherein: b is the micro-groove shape width of the oil distribution texture; h is₃The micro-groove shape depth of the oil distribution texture is adopted.

6. The rolling bearing inner ring raceway according to claim 1 or 5, wherein the oil distribution texture is a harmonically distributed micro-groove morphology, and the harmonically distributed micro-groove morphology parameters are: n-1-3, a-2, ω -4 pi-20 pi, where N is the number of harmonics; a is the harmonic amplitude; r is the curvature radius of the surface of the roller path; ω is the angular frequency.

7. The rolling bearing inner ring raceway according to claim 1 or 5, wherein the oil distribution texture is a micro-groove morphology of fishbone distribution, and the micro-groove morphology parameters of fishbone distribution are: w is 200-; alpha is the angle formed by the fishbone and the central line of the roller path.

8. An inner race track for a rolling bearing according to any one of claims 1 to 5 wherein the cross-sectional curvature of the central region of the surface of the track is of curvature θ₁Unilateral curve radian theta of cross section of side edge area on surface of roller path₂And the radian theta of the cross section curve of the surface area of the roller path provided with the oil distribution texture₃Satisfies the following relationship:

9. A rolling bearing, characterized by comprising a rolling bearing inner ring (1), wherein the rolling bearing inner ring (1) is provided with the rolling bearing inner ring raceway of any one of claims 1 to 5.

Technical Field

The invention relates to the field of bearings, in particular to a rolling bearing inner ring raceway and a rolling bearing.

Background

The rolling bearing is an important mechanical base part, and the technological performance of the rolling bearing is high and low, which often represents or restricts the development level of the mechanical industry and other related industries of a country. Wear or seizure of the raceway contact surfaces due to insufficient lubrication of the raceway surfaces and the absence of a mechanism for capturing abrasive particles is one of the main failure modes of the rolling bearing.

The Chinese patent discloses a long-life rolling bearing with a raceway surface having a specific texture sequence, wherein a single uniform texture array is processed on the raceway surface, so that the friction coefficient of the raceway surface is effectively reduced, and the service life of the bearing is prolonged. However, it is not taken into account that different regions of the raceway are subjected to different stresses and require different lubrication schemes. Meanwhile, when the rolling bearing bears radial impact force, the toughness of the single texture array is poor, dry friction is easy to occur on the surface, and the friction coefficient is increased by the surface texture.

The Chinese patent discloses a rolling bearing with a rolling path and a ball surface having a texture sequence, wherein micro-groove textures with specific sequences are processed on the rolling path, a retainer and the ball surface, so that each point on the ball surface participates in contact in the movement process, the abrasion loss is uniform, and the contact fatigue life is prolonged. However, in this solution, the motion trajectory is kept dependent on its high precision, which puts high demands on the processing technology and the post-processing of the material. When the bearing is impacted by alternating load, the stable running track of the bearing can jump, and the instability of the rolling bearing is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a rolling bearing inner ring raceway and a rolling bearing. The surface of the raceway is separated from the surface of the rolling body through the hydrodynamic pressure action of dynamic lubrication textures distributed in a core stressed area of the raceway, so that dry friction is avoided, and the lubrication condition of a contact surface is improved; the oil storage texture distributed in the side edge area of the raceway can store lubricating oil extruded from the power lubrication texture when bearing radial impact load, and the lubricating oil can form a continuous oil film on the surface of the oil storage texture under high load, so that the area generating hydrodynamic effect is increased, the impact load is resisted, and the bearing stability is maintained. The oil distribution textures distributed in the partial area of the roller path pump lubricating oil along the motion direction under the action of rotational inertia, so that the oil distribution uniformity of each area is ensured, and the joint bearing capacity of the areas can be effectively improved. In addition, a laser hardening layer is formed on the surface of the piston pin through the laser ablation effect, so that the subsequent surface quenching process is omitted, and the energy-saving and environment-friendly effects are achieved.

The present invention achieves the above-described object by the following technical means.

A dynamic lubrication texture is arranged in the central area of the surface of a rolling path of a rolling bearing inner ring, and is used for separating the surface of the rolling path from the surface of a rolling body so as to avoid dry friction; the side edge area of the surface of the raceway is provided with an oil storage texture and is a symmetrical area at two sides of the central area of the surface of the raceway and used for forming a continuous oil film under high load; and the surface of the roller path is provided with an oil distribution texture which is partially overlapped with the dynamic lubrication texture and the oil storage texture and is used for enabling the lubricating oil to move along the motion direction of the rolling body.

Further, the radian theta of the cross section curve of the central area of the surface of the raceway₁And the radian theta of the cross section curve of the inner ring raceway of the rolling bearing₀The relationship of (1) is: theta₁/θ₀10-50%; the unilateral curve radian theta of the cross section of the side edge area of the surface of the roller path₂And the radian theta of the cross section curve of the inner ring raceway of the rolling bearing₀The relationship of (1) is: 2 theta₂/θ₀50-90%; the radian theta of the cross section curve of the surface area of the roller path with the oil distribution texture₃And the radian theta of the cross section curve of the inner ring raceway of the rolling bearing₀The relationship of (A) is as follows: theta₃/θ₀＝10-95％。

Further, the dynamic lubrication texture is a micro-pit shape distributed in a uniform lattice manner, and the micro-pit shape parameters are as follows: d₁＝20-100μm,h₁5-30 μm; the distribution parameters of the uniform lattice of the micro pits are as follows: rho₁＝5-30％,

Wherein: d₁The texture micro-pit shape diameter is dynamically lubricated; h is₁Texturing the micro-pit shape depth for dynamic lubrication; rho₁The ratio of the shape area of the power lubrication texture micro-pit to the area of the central area of the surface of the roller path is shown; a is₁Is the radial distance between the micro-pit features of adjacent dynamic lubrication textures; b₁Is the circumferential distance between the micro-pit features of adjacent dynamic lubrication textures.

Further, the oil storage texture is a micro-pit morphology with uniform lattice distribution, and the micro-pit morphology parameters are as follows: d₂＝50-200μm,h₂1-15 μm, the uniform lattice distribution parameters of the micro pits are as follows: rho₂＝2-15％,

Wherein: d₂The shape and diameter of the oil storage texture micro-pit are shown; h is₂The shape depth of the oil storage texture micro-pits is adopted; rho₂The ratio of the shape area of the oil storage texture micro-pits to the area of the side edge area of the surface of the roller path is shown; a is₂Is the radial distance between the micro-pit features of adjacent oil-storage textures; b₂The circumferential distance between the micro-pit shapes of the adjacent oil storage textures is shown.

Further, the oil distribution texture is a regularly distributed micro-groove shape, and the micro-groove shape parameters are as follows: b20-100 μm, h₃1-15 μm; wherein: b is the micro-groove shape width of the oil distribution texture; h is₃The depth of the micro-groove shape of the oil distribution texture is shown.

Further, the oil distribution texture is in a harmonic distribution micro-groove shape, and the harmonic distribution micro-groove shape parameters are as follows: n-1-3, a-2, ω -4 pi-20 pi, where N is the number of harmonics; a is the harmonic amplitude; r is the curvature radius of the surface of the raceway; ω is the angular frequency.

Further, the oil distribution texture is a micro-groove shape of fishbone distribution, and the micro-groove shape parameters of the fishbone distribution are as follows: w is 200-; alpha is the angle formed by the fishbone and the central line of the roller path.

Further, the radian theta of the cross section curve of the central area of the surface of the raceway₁Starting the process; the unilateral curve radian theta of the cross section of the side edge area of the surface of the roller path₂And the radian theta of the cross section curve of the surface area of the roller path provided with the oil distribution texture₃Satisfies the following relationship:

and theta₃>θ₁。

A rolling bearing comprising a rolling bearing inner ring provided with a rolling bearing inner ring raceway according to any one of claims 1 to 5.

The invention has the beneficial effects that:

the surface of the raceway is separated from the surface of a rolling body under the hydrodynamic pressure action of dynamic lubrication textures distributed in a core stress area of the raceway, so that dry friction is avoided, and the lubrication condition of a contact surface is improved; the oil storage texture distributed in the side area of the raceway can store lubricating oil which overflows from the power lubrication texture when bearing radial impact load, and the lubricating oil can form a continuous oil film on the surface of the oil storage texture under high load, so that the area generating hydrodynamic effect is increased, the impact load is resisted, and the bearing stability is maintained. The oil distribution textures distributed in the partial area of the roller path pump lubricating oil along the motion direction under the action of rotational inertia, so that the oil distribution uniformity of each area is ensured, and the joint bearing capacity of the areas can be effectively improved. In addition, a laser hardening layer is formed on the surface of the piston pin through laser ablation, so that the subsequent surface quenching process is omitted, and the energy-saving and environment-friendly effects are achieved.

Drawings

Fig. 1 is a structural view of an embodiment 1 of an inner ring raceway of a rolling bearing according to the present invention.

Fig. 2 is a structural view of an embodiment 2 of an inner ring raceway of a rolling bearing according to the present invention.

Fig. 3 is a distribution diagram of the central area of the raceway surface according to the present invention.

Fig. 4 is an enlarged view of part i of fig. 3.

FIG. 5 is a uniform lattice distribution diagram of the dynamic lubrication texture morphology according to the present invention.

FIG. 6 is a schematic cross-sectional view of a power-lubricated dimple according to the present invention.

Fig. 7 is a side view of the raceway surface according to the invention.

FIG. 8 is an enlarged view of a portion IV of FIG. 7.

FIG. 9 is a uniform lattice distribution diagram of the oil storage texture morphology according to the present invention

FIG. 10 is a schematic cross-sectional view of an oil storage dimple according to the present invention.

Fig. 11 is a layout area diagram of the oil distribution texture on the surface of the raceway.

FIG. 12 is an enlarged view of a portion of VII of FIG. 11.

Fig. 13 is a schematic diagram of the harmonic distribution and fishbone distribution of the oil distribution texture of the present invention.

FIG. 14 is a schematic cross-sectional view of a micro-groove according to the present invention.

In the figure:

1-inner ring of rolling bearing; 2-rolling elements; 3-outer ring of rolling bearing.

Detailed Description

The invention will be further described with reference to the following figures and specific examples, without limiting the scope of the invention.

As shown in fig. 1 and fig. 2, in the raceway of the inner ring of the rolling bearing according to the present invention, a dynamic lubrication texture is provided in a central area of the raceway surface of the inner ring 1 of the rolling bearing, and the dynamic lubrication texture is used for separating the raceway surface from the surface of the rolling element 2, so as to avoid generating dry friction; the side edge area of the surface of the raceway is provided with an oil storage texture and is a symmetrical area at two sides of the central area of the surface of the raceway and used for forming a continuous oil film under high load; and the surface of the raceway is provided with an oil distribution texture which is partially overlapped with the dynamic lubrication texture and the oil storage texture and is used for enabling the lubricating oil to move along the motion direction of the rolling body 2. The dynamic lubrication texture of the raceway core area provides a main hydrodynamic effect; the oil storage texture of the side area of the roller path and the dynamic lubrication texture of the core area of the roller path cooperate to ensure that the rolling bearing can resist radial impact load; the oil distribution texture in the raceway part area pumps oil along the motion direction, so that the uniformity of the oil distribution area is ensured; the three components improve the running stability and the lubrication condition together.

As shown in fig. 4, 8 and 12, the central region of the raceway surface has a curvature θ of a cross-sectional curve₁And the radian theta of the cross section curve of the inner ring 1 raceway of the rolling bearing₀The relationship of (1) is: theta₁/θ₀10-50%; the unilateral curve radian theta of the cross section of the side edge area of the surface of the roller path₂And the radian theta of the cross section curve of the inner ring 1 raceway of the rolling bearing₀The relationship of (1) is: 2 theta₂/θ₀50-90%; the radian theta of the cross section curve of the surface area of the roller path with the oil distribution texture₃And the radian theta of the cross section curve of the inner ring 1 raceway of the rolling bearing₀The relationship of (1) is: theta₃/θ₀10-95%. The radian theta of the cross section curve of the central area of the surface of the raceway₁Unilateral curve radian theta of cross section of side edge area on surface of roller path₂And the radian theta of the cross section curve of the surface area of the roller path provided with the oil distribution texture₃Satisfies the following relationship:

and theta₃>θ₁. Thus, the stress area of the surface core of the raceway of the dynamic lubrication texture is overlapped with the side area of the surface of the raceway of the oil storage texture, and the partial area of the raceway of the oil distribution texture completely covers the stress area of the surface core of the raceway of the dynamic lubrication texture.

As shown in figure 3 and figure4. As shown in fig. 5 and 6, the dynamic lubrication texture is a micro-pit morphology with uniform lattice distribution, and the micro-pit morphology parameters are as follows: d₁＝20-100μm,h₁5-30 μm; the distribution parameters of the uniform lattice of the micro pits are as follows: rho₁＝5-30％,Wherein: d₁The texture micro-pit shape diameter is dynamically lubricated; h is₁The texture micro-pit shape depth is dynamically lubricated; rho₁The ratio of the shape area of the power lubrication texture micro-pit to the area of the central area of the surface of the roller path is shown; a is₁Is the radial distance between the micro-pit features of adjacent dynamic lubrication textures; b₁The circumferential distance between the micro-pit features of the adjacent dynamic lubrication textures.

As shown in fig. 7, 8, 9 and 10, the oil storage texture is a micro-pit morphology with uniform lattice distribution, and the micro-pit morphology parameters are as follows: d₂＝50-200μm,h₂1-15 μm, the uniform lattice distribution parameters of the micro pits are as follows: rho₂＝2-15％,

Wherein: d₂The shape and diameter of the oil storage texture micro-pit are shown; h is₂The shape depth of the oil storage texture micro-pits is adopted; rho₂The ratio of the shape area of the oil storage texture micro-pits to the area of the side edge area of the surface of the roller path is shown; a is₂The radial distance between the micro-pit shapes of the adjacent oil storage textures; b₂The circumferential distance between the micro-pit shapes of the adjacent oil storage textures is shown.

As shown in fig. 11, 12, 13 and 14, the oil distribution texture is a regularly distributed micro-groove morphology, and the parameters of the micro-groove morphology are as follows: b20-100 μm, h₃1-15 μm; wherein: b is the micro-groove shape width of the oil distribution texture; h is₃The micro-groove shape depth of the oil distribution texture is adopted. As shown in fig. 13, the oil distribution texture is a micro-groove morphology of harmonic distribution, and the parameters of the micro-groove morphology of harmonic distribution are as follows: n-1-3, a-r (0.5-2), ω -4 pi-20 pi, where N is the number of harmonics; a is the harmonic amplitude; r is the curvature radius of the surface of the roller path; ω is the angular frequency. The oil distribution texture is in the shape of micro-grooves distributed on fishbones, and the shape parameters of the micro-grooves distributed on the fishbones are as follows: w is 200-; alpha is the angle formed by the fishbone and the central line of the roller path.

As shown in fig. 1, in embodiment 1 of the inner ring raceway of the rolling bearing according to the present invention, the distribution shape of the oil distribution micro-grooves is fishbone-shaped, and the processing method specifically includes the following steps:

step 1, carrying out area division on the surface of a rolling bearing raceway, and determining parameters of a core stress area, a side area, a partial area range and a texture shape, wherein the specific morphological parameters are as follows: the ratio parameters of the core stress area occupied by the dynamic lubrication texture are as follows: theta₁/θ₀20-40%; the micro-pit morphology parameters of the dynamic lubrication texture are as follows: d₁＝30-70μm,h₁＝7- 13μm,ρ₁＝7-19％,

The proportion parameters of the side area occupied by the oil storage texture are as follows: theta₂/θ₀60-75%; the micro-pit morphology parameters of the oil storage texture are as follows: d₂＝60-140μm,h₂＝3-7μm,

The proportion parameters of the partial area occupied by the oil distribution texture are as follows: theta₃/θ₀75-85%; the morphology parameters of the oil distribution texture are as follows: b is 30-70 μm, h₃7-13 μm, distribution parameters: w is 400-8000 μm and alpha is 45-60 deg.

And 2, carrying out micro-pit laser ablation processing on the surface of the raceway according to a design scheme of a dynamic lubrication texture by using a solid laser or a fiber laser, wherein specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ps, 300ns]Pulse and vesselImpulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal of the processing point form 0-60 degrees.

And 3, carrying out micro-pit laser ablation processing on the surface of the raceway according to the design scheme of the oil storage texture by using a solid laser or a fiber laser, wherein the specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ns, 500ns ]]Pulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal of the processing point form 0-60 degrees.

And 4, carrying out micro-groove laser ablation processing on the surface of the raceway according to the design scheme of the oil distribution texture by using a solid laser or a fiber laser, wherein the specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ps, 300ns]Pulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]Pulse spot overlap rate [ 40%, 90%]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal of the processing point form 0-60 degrees.

And 5, finally forming a surface textured bearing raceway with fishbone-shaped oil distribution micro-grooves.

As shown in fig. 2, in embodiment 2 of the inner ring raceway of the rolling bearing according to the present invention, the distribution shape of the oil distribution micro-grooves is harmonic wave, and the processing method specifically includes the following steps:

step 1, carrying out area division on the surface of a rolling bearing raceway, and determining parameters of a core stress area, a side area, a partial area range and a texture shape, wherein the specific morphological parameters are as follows: the ratio parameters of the core stress area occupied by the dynamic lubrication texture are as follows: theta₁/θ₀20-40%; the micro-pit morphology parameters of the dynamic lubrication texture are as follows: d₁＝30-70μm,h₁＝7- 13μm,ρ₁＝7-19％,

The proportion parameters of the side area occupied by the oil storage texture are as follows: theta₂/θ₀60-75%; the micro-pit morphology parameters of the oil storage texture are as follows: d₂＝60-140μm,h₂＝3-7μm,ρ₂＝ 3-8％,

The proportion parameters of the partial area occupied by the oil distribution texture are as follows: theta₃/θ₀80-90%; the morphology parameters of the oil distribution texture are as follows: b is 30-70 μm, h₃7-13 μm, distribution parameters: n-1-3, a-2, r, ω -4 pi-20 pi.

And 2, carrying out micro-pit laser ablation processing on the surface of the raceway according to a design scheme of a dynamic lubrication texture by using a solid laser or a fiber laser, wherein specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ps, 300ns]Pulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal line of the processing point form an angle of 0-60 degrees;

and 3, carrying out micro-pit laser ablation processing on the surface of the raceway according to the design scheme of the oil storage texture by using a solid laser or a fiber laser, wherein the specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ns, 500ns ]]Pulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal line of the processing point form an angle of 0-60 degrees;

and 4, carrying out micro-groove laser ablation processing on the surface of the raceway according to the design scheme of the oil distribution texture by using a solid laser or a fiber laser, wherein the specific laser processing parameters are as follows: laser wavelength 532nm or 1064nm, defocus amount [ -1.2mm,1.2mm]Pulse width [10ps, 300ns]Pulse frequency [1Hz, 10KHz]Laser energy density [10⁶W/cm²,10⁸W/cm²]Pulse spot overlap rate [ 40%, 90%]The auxiliary gas is nitrogen or high-pressure air or inert gas, and the blowing angle of the auxiliary gas and the normal line of the processing point form an angle of 0-60 degrees;

and 5, finally forming a surface textured bearing raceway with harmonic-shaped oil distribution micro-grooves.

A rolling bearing comprises a rolling bearing inner ring 1, a rolling bearing outer ring 3 and a rolling body 2, wherein a dynamic lubrication texture, an oil storage texture and an oil distribution texture are arranged in a raceway of the rolling bearing inner ring 1.

The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.