A vibration super-precision rolling and polishing device and method for bearing rolling body limiting processing

Abstract

The application belongs to the technical field of precision machining of mechanical part surface, and aims to solve the problems of the existing process which is only applicable to small and medium batch rolling body machining, low polishing and grinding efficiency and small machining surface. A vibration superfinishing rolling and polishing device and method for bearing rolling body limiting machining are provided. The device comprises a vibration platform, a fixing assembly and a plurality of containers. The inner wall of the container comprises a first left wall, an upper wall, a second left wall, a lower wall and a right wall which are connected in sequence. The first left wall, the second left wall and the right wall are arranged in parallel. The included angle between the upper wall and the second left wall is greater than the included angle between the lower wall and the right wall. The container is provided with a rolling body, a medium and a limiting assembly comprising six limiting pieces. The distance between adjacent two limiting pieces is less than the diameter of the rolling body and greater than the diameter of the medium. The medium is in contact with the rolling body. The application can improve the roughness grade of the surface of the rolling body and realize omnibearing and mass superfinishing of the surface of the rolling body.

Description

Technical Field

[0001] The present invention relates to the technical field of precision machining of mechanical parts surfaces, and in particular to a vibration ultra-precision rolling and polishing device and method for position limiting machining of bearing rolling elements. Background Art

[0002] Rolling bearings are one of the most critical and widely used basic components in major high-end equipment. Their operating status directly affects the service performance of rotating machinery. The rolling element is the weakest and most critical part of the rolling bearing. Its surface quality directly affects the service performance and service life of the bearing. Precision machining technology, as the final processing method of the bearing rolling element manufacturing process, is a key process to improve its surface quality.

[0003] At present, the precision machining methods for bearing rolling elements mainly include centerless grinding, centerless super finishing, centering reciprocating super finishing, electrochemical mechanical composite finishing, magnetohydrodynamic grinding and double-plane super finishing, etc. The precision machining method for bearing rolling elements mainly involves super finishing after grinding. The surface quality is greatly affected by the grinding wheel and guide wheel and is difficult to control. With the continuous development of high-end equipment, large-scale and all-round uniform processing of bearing rolling elements has become a difficult problem that needs to be solved urgently. Except for some individual processing methods that are limited by environmental factors and costs, most of the processing methods can only process a simple curved surface of the bearing rolling element. Chinese invention patent CN202010150346.5 discloses a semi-fixed abrasive polishing disc for ultra-precision polishing of the cylindrical surface of a GCr15 bearing steel cylindrical roller. This method can improve the dimensional accuracy of the cylindrical roller while improving its surface quality. However, this process is currently only suitable for small and medium-sized batch processing and is only suitable for precision machining of the outer diameter surface of the roller.

[0004] Vibration tumbling is a widely used tumbling and finishing process that uses granular media to produce micro-grinding on the workpiece surface, comprehensively improve the surface integrity of the workpiece, and achieve finishing of the workpiece surface. However, in the existing vibration tumbling process for bearing rolling elements, a large number of bearing rolling elements are freely placed in the same container. There are differences in particle size, mass, and shape between the bearing rolling elements and the granular media, which leads to "particle separation". The intensity of the effect of the granular media on the bearing rolling elements is reduced, resulting in low polishing efficiency. In addition, the bearing rolling elements are prone to collide with each other and damage the surface during the processing. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a vibration ultra-precision rolling and polishing device and method for bearing rolling element limiting processing, which can realize all-round and large-scale processing and improve processing efficiency.

[0006] A first aspect of the present invention provides a vibration ultra-precision rolling and polishing device for limited processing of bearing rolling elements, comprising:

[0007] Vibration platform;

[0008] A fixed component is arranged on a vibration platform, and the vibration platform is used to drive the fixed component to move;

[0009] Multiple containers are evenly distributed in the fixed component, the container includes a first side plate, a cover plate and a first bottom plate, the first bottom plate is connected to the fixed component, the first side plate, the cover plate and the first bottom plate are connected to form a accommodating space, the inner wall of the accommodating space includes a first left wall, an upper wall, a second left wall, a lower wall and a right wall, the first left wall, the second left wall and the right wall are arranged in parallel, the upper wall connects the first left wall and the second left wall, and is arranged at an angle, the lower wall connects the second left wall and the right wall, and is arranged at an angle, the angle between the upper wall and the second left wall is greater than the angle between the lower wall and the right wall, a limiting component is provided in the accommodating space, the limiting component includes six limiting parts that surround an active area, a flexible part is provided on the outer periphery of the limiting part, a rolling body is movably arranged in the active area, the distance between two adjacent limiting parts is less than the diameter of the rolling body, the inside of the container is filled with a medium, the distance between two adjacent limiting parts is greater than the diameter of the medium, and the medium is in contact with the rolling body.

[0010] Optionally, the number of containers is N, determined by the following formula:

[0011]

[0012] Where, is the angular frequency, is the excitation amplitude, is the mass of the first side plate and the first bottom plate, is the mass of the cover, is the mass of the limiter and flexible part, is the mass of the medium, is the mass of the rolling element, is the mass of the fixed component, Provides exciting force to the vibration platform.

[0013] Optionally, the size of the container is determined by the following formula:

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020] Where, is the width of the container. is the distance between the axes of two adjacent limiters, is the diameter of the flexible member, is the diameter of the medium, is the difference between the height of the point where the upper wall intersects the first left wall and the height of the point where the lower wall intersects the second left wall, is the length of the rolling element, is the length of the container, is the filling height of the medium, is the height of the container, is the width of the upper wall, is the granular medium correlation coefficient of the container width, is the granular medium correlation coefficient of the upper wall width, Granular medium correlation coefficient of container length, is the particle medium correlation coefficient of the medium filling height.

[0021] Optionally, the limit assembly is arranged in the area between the upper wall and the lower wall, and the vertical distance from the center point of the limit assembly to the upper wall is smaller than the vertical distance from the center point of the limit assembly to the lower wall, and the vertical distance from the center point of the limit assembly to the second left wall is smaller than the vertical distance from the center point of the limit assembly to the right wall.

[0022] Optionally, the size and position of the limiter in the container are determined by the following formula:

[0023]

[0024]

[0025]

[0026] Where, is the diameter of the medium, is the diameter of the rolling element, is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the distance between the center point of the limit assembly and the left wall, The particle medium correlation coefficient is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the particle medium correlation coefficient of the distance between the center point of the limiting component and the left wall.

[0027] Optionally, the distance between the end of the limiting member close to the cover plate and the cover plate is less than the length of the rolling body.

[0028] Optionally, the fixing assembly includes two symmetrically arranged second side plates and multiple second bottom plates, the two second side plates are arranged on the vibration platform, and multiple grooves are symmetrically arranged on the opposite sides of the two second side plates, the second bottom plate is slidably arranged along the grooves, and multiple containers are evenly arranged on the second bottom plate.

[0029] Optionally, the medium occupies 60% of the volume of the container, is spherical, and is made of high-aluminum porcelain, and its surface is covered with HYF abrasive, water and 0.5 Metallographic polishing powder.

[0030] A second aspect of the present invention provides a vibration ultra-precision rolling method for bearing rolling element position limiting processing, which is based on any of the above-mentioned vibration ultra-precision rolling devices for bearing rolling element position limiting processing, and includes the following steps:

[0031] S1. Assemble the container by connecting the first side plate and the first bottom plate, fasten the limit assembly to the inner side of the first side plate with bolts, place the rolling element in the hexagonal area surrounded by the multiple limit members, and connect the cover plate and the first side plate;

[0032] S2, filling the medium into the assembled container;

[0033] S3. Fix the container by fixing the filled container in the fixing assembly with bolts;

[0034] S4, repeat steps S1 to S3 until all containers are fixed in the fixing assembly;

[0035] S5. Fix the fixing assembly by bolting it to the vibration platform;

[0036] S6. Start the vibration platform and select the amplitude and frequency according to the processing needs. The amplitude is 2-3.5mm and the frequency is 25-50. , and set the processing time;

[0037] S7. After polishing to the preset time, the vibration platform stops vibrating, the container is disassembled, the medium inside the container is poured out, and the rolling element is taken out.

[0038] The technical solution provided by the embodiment of the present invention has the following beneficial effects compared with the prior art:

[0039] Embodiments of the present invention provide a vibration ultra-precision rolling polishing device and method for limiting the position of bearing rolling elements. This device, by providing a container, allows a medium to move in the container for a long period of time to form an annular flow field with a single counterclockwise needle flow, thereby achieving finishing of the outer surface of the rolling element and ensuring the accuracy of the rolling element to a certain extent. By providing an inclined lower wall, the medium moving in the container more easily forms an annular flow field, improving the processing capacity and the uniformity of the movement. The limiting assembly includes six limiting members that enclose a hexagonal area. The distance between two adjacent limiting members is less than the diameter of the rolling element, allowing the rolling element to move freely within the hexagonal area without escaping. The distance between two adjacent limiting members is greater than the diameter of the medium, allowing the medium to freely enter and exit the hexagonal area and contact the rolling element. The vibration platform drives the fixed assembly to move, so that the medium in each container can produce a micro-grinding on the surface of the rolling element, achieving the purpose of improving the surface integrity of the bearing rolling element. It can further improve the roughness level of the rolling element surface without destroying the original shape and dimensional accuracy of the rolling element. This device has a simple structure and low cost, and achieves all-round, large-scale ultra-precision processing of the rolling element surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 Schematic diagram of the structure of the vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic structural diagram of a container according to an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the interior of a container according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic structural diagram of a position limiting assembly according to an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the dimensions of a container according to an embodiment of the present invention;

[0047] Figure 6 for Figure 5 Schematic diagram of the middle AA direction;

[0048] Figure 7 Comparison of the outer diameter surface morphology of the rolling element before and after processing according to an embodiment of the present invention: (a) outer diameter surface morphology before processing, (b) outer diameter surface morphology after processing;

[0049] Figure 8 Comparison diagrams of the end face morphology of the rolling element before and after processing according to an embodiment of the present invention: (c) end face morphology diagram before processing, (d) end face morphology diagram after processing.

[0050] Among them, 1. Vibration platform; 2. Fixed component; 201. Second side plate; 202. Second bottom plate; 3. Container; 301. First side plate; 302. Cover plate; 303. First bottom plate; 4. Limiting component; 401. Back plate; 402. Limiting member; 403. Flexible member; 5. Rolling body; 6. Medium; 7. First left wall; 8. Upper wall; 9. Second left wall; 10. Lower wall; 11. Right wall. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.

[0053] Reference Figures 1 to 8 As shown, the first aspect of this embodiment provides a vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing, including a vibration platform 1, a fixing component 2 and multiple containers 3.

[0054] Among them, the fixed component 2 is arranged on the vibration platform 1, and the vibration platform 1 is used to drive the fixed component 2 to move. A plurality of containers 3 are evenly distributed in the fixed component 2. The container 3 includes a first side plate 301, a cover plate 302 and a first bottom plate 303. The first bottom plate 303 is connected to the fixed component 2. The first side plate 301, the cover plate 302 and the first bottom plate 303 are connected to form an open accommodating space. A limiting component 4 is arranged inside the container 3. The limiting component 4 includes six limiting members 402 that surround an active area. The limiting member 402 adopts a cylindrical rod. The active area is a circle with the center point of the limiting component 4 as the center and the center of the limiting member 402 to the midline point of the limiting component 4 as the radius. The centers of the six limiting members 402 are all on the circumference of this circle. A rolling body 5 is movably arranged in the active area. The distance between two adjacent limiting members 402 is less than the diameter of the rolling body 5, so that The rolling body 5 can move freely in the active area and does not run out. The container 3 is filled with a medium 6. The distance between two adjacent limit members 402 is greater than the diameter of the medium 6, so that the medium 6 can freely enter and exit the active area and contact the rolling body 5. At the same time, the outer periphery of the six limit members 402 is sleeved with a flexible member 403. The flexible member 403 can prevent excessive collision between the limit members 402 and the rolling body 5, thereby damaging the surface of the rolling body 5. The vibration platform 1 drives the fixed component 2 to move, so that the medium 6 in each container 3 can produce a small amount of grinding on the surface of the rolling body 5, thereby achieving the purpose of improving the surface integrity of the bearing rolling body, and realizing that the roughness level of the surface of the rolling body 5 can be further improved without destroying the original shape and dimensional accuracy of the rolling body 5. This device has a simple structure and low cost, and realizes all-round and large-scale super-finishing of the surface of the rolling body 5.

[0055] Of course, the limiting members 402 can be set to other numbers and to other shapes, as long as the area surrounded by the multiple limiting members 402 can allow the medium 6 to enter and exit freely and the rolling body 5 cannot escape. The container 3 can also be a closed structure.

[0056] Further, refer to Figure 2 and Figure 5As shown, the inner wall of the accommodating space includes a first left wall 7, an upper wall 8, a second left wall 9, a lower wall 10 and a right wall 11. The first left wall 7, the second left wall 9 and the right wall 11 are arranged in parallel, the upper wall 8 connects the first left wall 7 and the second left wall 9 and is arranged at an angle, the lower wall 10 connects the second left wall 9 and the right wall 11 and is arranged at an angle, and the angle between the upper wall 8 and the second left wall 9 is greater than the angle between the lower wall 10 and the right wall 11. By arranging the container 3 in this way, the medium 6 moves in the container 3 for a long time to form an annular flow field of "single counterclockwise flow", thereby realizing the finishing processing of the outer surface of the rolling body 5, which can ensure the accuracy of the rolling body 5 to a certain extent. By arranging the inclined lower wall 10, the medium 6 can more easily form an annular flow field when moving in the container 3, thereby improving the processing capability and the uniformity of the movement.

[0057] The number of containers 3 is N, which is determined by the following formula:

[0058]

[0059] Where, is the angular frequency, , is the excitation frequency, is the excitation amplitude, is the mass of the first side plate and the first bottom plate, is the mass of the cover, is the mass of the limiter and flexible part, is the mass of the medium, is the mass of the rolling element, is the mass of the fixed component, Provides exciting force to the vibration platform.

[0060] The dimensions of container 3 are determined by the following formula:

[0061]

[0062]

[0063]

[0064]

[0065]

[0066]

[0067] Where, is the width of the container. is the distance between the axes of two adjacent limiters, is the diameter of the flexible member, is the diameter of the medium, is the difference between the height of the point where the upper wall intersects the first left wall and the height of the point where the lower wall intersects the second left wall, is the length of the rolling element, is the length of the container, is the filling height of the medium, is the height of the container, is the width of the upper wall, is the granular medium correlation coefficient of the container width, is the granular medium correlation coefficient of the upper wall width, Granular medium correlation coefficient of container length, is the particle medium correlation coefficient of the medium filling height.

[0068] Further, refer to Figure 3 and Figure 4 As shown, the limiting assembly 4 is arranged in the area between the upper wall 8 and the lower wall 10, and the vertical distance from the center point of the limiting assembly 4 to the upper wall 8 is smaller than the vertical distance from the center point of the limiting assembly 4 to the lower wall 10, and the vertical distance from the center point of the limiting assembly 4 to the second left wall 9 is smaller than the vertical distance from the center point of the limiting assembly 4 to the right wall 11;

[0069] The size and position of the limiting member 402 in the container 3 are determined by the following formula:

[0070]

[0071]

[0072]

[0073] Where, is the diameter of the medium, is the diameter of the rolling element, is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the distance between the center point of the limit assembly and the left wall, The particle medium correlation coefficient is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the particle medium correlation coefficient of the distance between the center point of the limiting component and the left wall.

[0074] Among them, the position where the limit component 4 is located in the container 3 is subject to greater gravity and pressure, and the flow field at this position is strong. The limit component 4 can fix the rolling body 5 at this position, thereby improving the efficiency of finishing the rolling body 5. At the same time, the limit component 4 also includes a back plate 401, which is fixed to the first side plate 301 by bolts, and six limit members 402 are fixed to the back plate 401, thereby realizing the fixing of the limit component 4 in the container 3.

[0075] Furthermore, the distance from the end of the limiter 402 close to the cover plate 302 to the cover plate 302 is less than the length of the rolling body 5, that is, the length of the limiter 402 needs to be slightly less than or equal to the distance from the end where the limiter 402 is connected to the back plate 401 to the cover plate 302, so that the rolling body 5 is completely restricted in the limiter assembly 4 and can only move in the active area inside the limiter assembly 4, preventing the rolling body 5 from colliding when it moves freely inside the container 3, resulting in low polishing efficiency. At the same time, the area formed by the limiter assembly 4 is an area with a strong flow field, and the rolling body 5 is placed therein, which improves the efficiency of finishing the rolling body 5.

[0076] In some embodiments, reference Figure 1 As shown, the fixing assembly 2 includes two symmetrically arranged second side plates 201 and multiple second bottom plates 202. The two second side plates 201 are arranged on the vibration platform 1, and multiple grooves are symmetrically arranged on the opposite sides of the two second side plates 201. The second bottom plate 202 is slidably arranged along the groove, and multiple containers 3 are evenly arranged on the second bottom plate 202. Specifically, the number of grooves and the second base plate 202 is the same, the grooves on the two second side plates 201 are symmetrically arranged and correspond to the position arrangement of the second base plate 202, and multiple containers 3 are evenly fixed on the second base plate 202 by bolts, and the second base plate 202 can slide along the groove, so that the second base plate 202 with the container 3 fixed is assembled between the two second side plates 201 along the groove until the multiple second base plates 202 are assembled. At this time, multiple containers 3 are installed in the fixed component 2, thereby realizing the simultaneous processing of a large number of rolling elements 5 and meeting the requirements of batch precision processing of the surface of the rolling elements 5, avoiding placing a large number of rolling elements 5 in the same container 3, and there are differences in particle size, quality and shape between the rolling elements 5 and the medium 6, which makes it easy for "particle separation" to occur, and the intensity of the effect of the medium 6 on the rolling elements 5 is reduced, resulting in reduced polishing efficiency.

[0077] Reference Figure 5 and Figure 6 As shown, the medium 6 occupies 60% of the volume of the container 3. The medium 6 is spherical and made of high-aluminum porcelain. Its surface is covered with HYF abrasive, water and 0.5 The metallographic polishing powder enables the medium 6 to polish the rolling element 5 when in contact with the rolling element 5 .

[0078] Reference Figure 7 and Figure 8 As shown, the second aspect of this embodiment provides a vibration ultra-precision rolling method for bearing rolling element limiting processing, which is based on the above-mentioned vibration ultra-precision rolling device for bearing rolling element limiting processing, and includes the following steps:

[0079] S1. Assemble the container 3 by connecting the first side plate 301 and the first bottom plate 303. Secure the limiting assembly 4 to the inner side of the first side plate 301 with bolts. Place the rolling element 5 within the hexagonal area surrounded by the limiting members 402. Connect the cover plate 302 and the first side plate 301.

[0080] S2, filling medium 6, filling the assembled container 3 with medium 6, specifically, filling the container 3 with 60% of medium 6, the medium 6 is a spherical high-alumina porcelain with a diameter of 3mm, which is wetted and soaked in a mixture of HYF abrasive, water and an appropriate amount of 0.5 The metallographic polishing powder is properly drained and placed in container 3;

[0081] S3, fixing the container 3, fixing the filled container 3 in the fixing assembly 2 with bolts;

[0082] S4, repeat steps S1 to S3 until all containers 3 are fixed in the fixing assembly 2;

[0083] S5, fixing the fixing assembly 2, fixing the fixing assembly 2 to the vibration platform 1 by bolts;

[0084] S6, start the vibration platform 1, select the amplitude and frequency according to the processing needs, the amplitude is 2 ~ 3.5mm, the frequency is 25 ~ 50 , and set the processing time;

[0085] S7. After polishing for a preset time, the vibration platform 1 is controlled to stop vibrating, the container 3 is disassembled, the medium 6 inside the container 3 is poured out, and the rolling body 5 is taken out.

[0086] The present invention provides four specific embodiments, wherein the vibration direction of the vibration platform 1 is vertical vibration, the selected rolling element 5 is a cylindrical roller, the outer diameter surface is processed by oilstone superfinishing, and the end surface is processed by grinding. , , the material is GCr15, confirm Container 3 is made of white nylon by 3D printing. The position of the limit component 4 inside the container 3 and the size of the container 3 are determined based on the previous processing experience. , , , , , , , .

[0087] Example 1

[0088] A vibration ultra-precision rolling method for bearing rolling element limiting processing includes the following steps:

[0089] S1. Assemble the container 3 by connecting the first side plate 301 and the first bottom plate 303. Fix the limiting assembly 4 to the first side plate 301 with bolts. Place the rolling element 5 in the hexagonal area surrounded by the multiple limiting members 402. Connect the cover plate 302 and the first side plate 301.

[0090] S2, filling medium 6, filling the assembled container 3 with medium 6, specifically, filling the container 3 with 60% of medium 6, the medium 6 is a spherical high-alumina porcelain with a diameter of 3mm, which is wetted and soaked in a mixture of HYF abrasive, water and an appropriate amount of 0.5 The metallographic polishing powder is properly drained and placed in container 3;

[0091] S3, fixing the container 3, fixing the filled container 3 in the fixing assembly 2 with bolts;

[0092] S4, repeat steps S1 to S3 until all containers 3 are fixed in the fixing assembly 2;

[0093] S5, fixing the fixing assembly 2, fixing the fixing assembly 2 to the vibration platform 1 by bolts;

[0094] S6, start the vibration platform 1, select the amplitude and frequency according to the processing needs, the amplitude ,frequency , and set the processing time;

[0095] S7. After processing for 9 hours, the vibration platform 1 is controlled to stop vibrating, the container 3 is disassembled, the medium 6 inside the container 3 is poured out, and the rolling body 5 is taken out.

[0096] At this time, the cylindrical surface roughness of the rolling element 5 The value is 0.077 Down to 0.024 , end surface roughness The value is 0.131 Down to 0.030 The scratches on the surface of rolling element 5 are basically removed, achieving a mirror effect and realizing the processing goal of ultra-precision rolling and polishing.

[0097] Example 2

[0098] The difference from Example 1 is that the amplitude in step S6 ,frequency , rolling element 5 cylindrical surface roughness The value is 0.079 Down to 0.024 , end surface roughness The value is 0.135 Down to 0.033 .

[0099] Example 3

[0100] The difference from Example 1 is that the amplitude in step S6 ,frequency , rolling element 5 cylindrical surface roughness The value is 0.076 Down to 0.024 , end surface roughness The value is 0.124 Down to 0.033 .

[0101] Example 4

[0102] The difference from Example 1 is that the amplitude in step S6 ,frequency , rolling element 5 cylindrical surface roughness The value is 0.080 Down to 0.024 , end surface roughness The value is 0.135 Down to 0.031 .

[0103] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0104] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement 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. Therefore, the present invention is not intended to be limited to the embodiments described herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing, characterized in that: include: Vibration platform (1); A fixed component (2), the fixed component (2) is arranged on the vibration platform (1), and the vibration platform (1) is used to drive the fixed component (2) to move; A plurality of containers (3) are uniformly distributed in a fixed assembly (2), the container (3) comprises a first side plate (301), a cover plate (302) and a first bottom plate (303), the first bottom plate (303) is connected to the fixed assembly (2), the first side plate (301), the cover plate (302) and the first bottom plate (303) are connected to form a receiving space, the inner wall of the receiving space comprises a first left wall (7), an upper wall (8), a second left wall (9), a lower wall (10) and a right wall (11), the first left wall (7), the second left wall (9) and the right wall (11) are arranged in parallel, the upper wall (8) connects the first left wall (7) and the second left wall (9) and is arranged in an inclined manner, and the lower wall (10) The second left vessel wall (9) and the right vessel wall (11) are connected and arranged in an inclined manner. The angle between the upper vessel wall (8) and the second left vessel wall (9) is greater than the angle between the lower vessel wall (10) and the right vessel wall (11). A limiting assembly (4) is arranged in the accommodating space. The limiting assembly (4) includes six limiting members (402) that enclose an active area. Flexible members (403) are sleeved on the outer periphery of the limiting members (402). A rolling body (5) is movably arranged in the active area. The distance between two adjacent limiting members (402) is less than the diameter of the rolling body (5). The interior of the container (3) is filled with a medium (6). The distance between two adjacent limiting members (402) is greater than the diameter of the medium (6). The medium (6) contacts the rolling body (5).

2. A vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1, characterized in that: The number of containers (3) is N, which is determined by the following formula: Where, is the angular frequency, is the excitation amplitude, is the mass of the first side plate and the first bottom plate, is the mass of the cover, is the mass of the limiter and flexible parts, is the mass of the medium, is the mass of the rolling element, is the mass of the fixed component, Provides exciting force to the vibration platform.

3. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The dimensions of the container (3) are determined by the following formula: Where, is the width of the container. is the distance between the axes of two adjacent limiters, is the diameter of the flexible member, is the diameter of the medium, is the difference between the height of the point where the upper wall intersects the first left wall and the height of the point where the lower wall intersects the second left wall, is the length of the rolling element, is the length of the container, is the filling height of the medium, is the height of the container, is the width of the upper wall, is the granular medium correlation coefficient of the container width, is the granular medium correlation coefficient of the upper wall width, Granular medium correlation coefficient of container length, is the particle medium correlation coefficient of the medium filling height.

4. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The limiting assembly (4) is arranged in the area between the upper vessel wall (8) and the lower vessel wall (10), and the vertical distance from the center point of the limiting assembly (4) to the upper vessel wall (8) is smaller than the vertical distance from the center point of the limiting assembly (4) to the lower vessel wall (10), and the vertical distance from the center point of the limiting assembly (4) to the second left vessel wall (9) is smaller than the vertical distance from the center point of the limiting assembly (4) to the right vessel wall (11).

5. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The size of the stopper (402) and its position in the container (3) are determined by the following formula: Where, is the diameter of the medium, is the diameter of the rolling element, is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the distance between the center point of the limit assembly and the left wall, The particle medium correlation coefficient is the difference between the height of the point where the lower wall intersects the second left wall and the height of the center point of the limit assembly, is the particle medium correlation coefficient of the distance between the center point of the limiting component and the left wall.

6. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The distance between the end of the limiting member (402) close to the cover plate (302) and the cover plate (302) is less than the length of the rolling body (5).

7. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The fixing assembly (2) comprises two symmetrically arranged second side plates (201) and a plurality of second bottom plates (202); the two second side plates (201) are arranged on the vibration platform (1); and a plurality of grooves are symmetrically arranged on opposite sides of the two second side plates (201); the second bottom plates (202) are slidably arranged along the grooves, and the plurality of containers (3) are evenly arranged on the second bottom plates (202).

8. The vibration ultra-precision rolling and polishing device for bearing rolling element limiting processing according to claim 1 is characterized in that: The medium (6) occupies 60% of the volume of the container (3). The medium (6) is spherical and made of high-aluminum porcelain. Its surface is covered with HYF abrasive, water and 0.5 Metallographic polishing powder.

9. A vibration ultra-precision rolling method for bearing rolling element position limiting processing, based on a vibration ultra-precision rolling device for bearing rolling element position limiting processing according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, assembling the container (3), connecting the first side plate (301) and the first bottom plate (303), fixing the limiting assembly (4) to the inner side of the first side plate (301) by bolts, arranging the rolling body (5) in a hexagonal area surrounded by a plurality of limiting members (402), and connecting the cover plate (302) and the first side plate (301); S2, filling the medium (6), filling the medium (6) into the interior of the assembled container (3); S3, fixing the container (3), fixing the filled container (3) in the fixing assembly (2) by means of bolts; S4, repeating steps S1 to S3 until all containers (3) are fixed in the fixing assembly (2); S5, fixing the fixing assembly (2), fixing the fixing assembly (2) to the vibration platform (1) by means of bolts; S6, start the vibration platform (1) to work, select the amplitude and frequency according to the processing needs, the amplitude is 2 ~ 3.5mm, the frequency is 25 ~ 50 , and set the processing time; S7. After polishing for a preset time, the vibration platform (1) stops vibrating, the container (3) is disassembled, the medium (6) inside the container (3) is poured out, and the rolling body (5) is taken out.

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