Angular contact ball bearing
By integrating the stop ring and stop pin on the outer ring of the angular contact ball bearing, the limiting part is formed to limit the rotation of the bearing outer ring, the problem of insufficient radial force bearing of the angular contact ball bearing under heavy load and high-speed operating conditions is solved, the positioning performance and impact resistance of the bearing are improved, and the service life is extended.
Patent Information
- Application Number
- CN202421623524.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Under heavy load and high-speed operating conditions, the radial force bearing capacity of angular contact ball bearings is insufficient, resulting in overposition and wear, affecting the normal operation of the equipment.
The stop ring and stop pin are integrated on the outer ring of the bearing, forming a limit part one and a limit part two, limiting the rotation of the outer ring of the bearing, thereby improving the axial positioning performance and impact load resistance of the bearing.
It effectively improves the axial positioning performance and impact load resistance of the bearing, extends the service life, and reduces the vibration and maintenance needs of the equipment.
Smart Images
Figure CN222910541U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearings, and particularly relates to an angular contact ball bearing. Background Art
[0002] Angular contact ball bearings can be used to bear combined loads, that is, loads acting axially and radially simultaneously. In normal use, its inner ring rotates, and the outer ring does not rotate with the inner ring due to the tight fit with the inner hole of the bearing housing, so as to achieve the bearing of axial force and radial force.
[0003] However, under some heavy load and high-speed working conditions, due to the small radial force bearing capacity of angular contact ball bearings, they are not suitable for bearing large radial forces and need to be used in combination with cylindrical roller bearings, or in combination with oil film bearings at higher speeds. In this case, the outer ring of the angular contact bearing is still tightly fitted with the bearing housing, and the bearing will have over-positioning, which affects the clearance of the radial force bearing (roller bearing or oil film bearing). It is necessary to consider leaving a clearance between the outer ring of the angular contact bearing and the outer ring of the bearing housing so that the angular contact bearing only bears axial force and does not bear radial force. However, since the rotation of the outer ring is not restricted, the outer ring of the bearing rotates with the inner ring, resulting in severe wear of the thrust surface in contact with the bearing housing, which will cause deviation in the axial positioning of the transmission shaft and large clearances, leading to abnormal conditions such as increased equipment vibration, requiring offline maintenance and affecting normal production. Summary of the Invention
[0004] The purpose of the utility model is to provide a technical solution for an angular contact ball bearing aiming at the deficiencies of the prior art. The structure is ingeniously and reasonably designed and has strong practicability. A retaining ring and a retaining pin are integrally arranged on the outer ring of the bearing, thus forming two limiting parts, namely a limiting part one and a limiting part two, to limit the rotation of the outer ring of the bearing, effectively improving the axial positioning performance of the bearing and the ability of the bearing to resist impact loads, and having the characteristics of strong bearing capacity, wide application range, long service life, etc.
[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:
[0006] An angular contact ball bearing includes a bearing inner ring, a bearing outer ring, balls and a cage. A double-row raceway is formed between the bearing inner ring and the bearing outer ring. A retaining groove is arranged on the outer wall of the middle part of the bearing outer ring, and a retaining ring is arranged in the retaining groove. One end of the retaining ring extends to the outside of the retaining groove to form a limiting part one; a retaining pin is arranged on the outer wall of the bearing outer ring, and the head of the retaining pin is limited and protrudes on the outer wall of the bearing outer ring to form a limiting part two; the structure is ingeniously and reasonably designed and has strong practicability. A retaining ring and a retaining pin are integrally arranged on the outer ring of the bearing, thus forming two limiting parts, namely a limiting part one and a limiting part two, to limit the rotation of the outer ring of the bearing, effectively improving the axial positioning performance of the bearing and the ability of the bearing to resist impact loads, and having the characteristics of strong bearing capacity, wide application range, long service life, etc.
[0007] Furthermore, arc chamfers are provided on the inner ring and the outer ring of the bearing. The arc chamfer design can remove burrs, facilitate the actual assembly of the bearing, reduce stress concentration, enhance the structural strength of the inner ring and the outer ring of the bearing, and improve the service life and reliability of the bearing.
[0008] Furthermore, the outer ring of the bearing is an integrally molded structure. The integrally molded design can ensure the structural strength and stability of the outer ring of the bearing, reduce accessories and facilitate the actual installation of the bearing. In addition, the integral molding makes the outer ring of the bearing have higher rigidity, which can better resist external deformation and impact, help to improve the bearing's load-bearing capacity and operating accuracy, and make the bearing suitable for applications with higher precision requirements, thereby expanding the scope of application.
[0009] Furthermore, the inner ring of the bearing is an integrally formed structure, which makes the inner ring of the bearing have better structural stability. Combined with the integrally formed design of the outer ring of the bearing, it can effectively improve the overall structural strength and load-bearing capacity of the bearing, and reduce accessories to facilitate the actual installation of the bearing.
[0010] Furthermore, the angle α formed by the line connecting the contact points of the ball with the inner ring and the outer ring of the bearing and the radial direction is 25 to 30°. The design is ingenious and reasonable. Limiting the contact angle α of the bearing to between 25 and 30° can ensure the axial load-bearing capacity of the bearing and improve the stability and reliability of the bearing during operation.
[0011] Furthermore, the inner ring and the outer ring of the bearing are subjected to salt bath heat treatment. Through the salt bath heat treatment, the surfaces of the inner ring and the outer ring of the bearing acquire a higher hardness, thereby improving the wear resistance and durability and extending the service life of the bearing.
[0012] Furthermore, the ball bearings are steel balls, which are arranged between the inner ring of the bearing and the outer ring of the bearing. Using steel balls as ball bearings can facilitate lubrication operations, and the steel balls have good wear resistance, ensuring that the bearings can still maintain stable performance after long-term operation, thereby extending the service life of the bearings. The steel balls have high strength and load-bearing capacity, and can withstand large radial and axial loads.
[0013] Furthermore, the inner ring of the bearing includes inner ring one and inner ring two, groove one is formed between inner ring one and the outer ring of the bearing, groove two is formed between inner ring two and the outer ring of the bearing, balls are arranged in groove one and groove two, and the retaining frame evenly distributes the balls in groove one and groove two. The inner ring of the bearing is designed as a split design of inner ring one and inner ring two, which can facilitate subsequent maintenance and replacement. When a problem occurs in inner ring one or inner ring two, only the corresponding inner ring part needs to be replaced, and there is no need to replace the entire inner ring of the bearing, thereby reducing maintenance costs.
[0014] Further, a positioning block one and a positioning groove one are provided on the end face of the inner ring one, and a positioning block two and a positioning groove two are provided on the end face of the inner ring two. The positioning block one is fitted and clamped in the positioning groove two, and the positioning block two is fitted and clamped in the positioning groove one. The matching clamping of the positioning block one and the positioning groove two, and the matching clamping of the positioning block two and the positioning groove one can achieve the precise clamping between the inner ring one and the inner ring two, facilitating the actual assembly and positioning.
[0015] Further, a groove one is provided on the inner ring one, so that a limiting plate one is formed on the inner ring one. A groove two is provided on the inner ring two, so that a limiting plate two is formed on the inner ring two. The limiting plate one is fixedly connected to the corresponding limiting plate two through a bolt assembly. The structural design is ingenious and reasonable. The design of the groove one forms the limiting plate one on the inner ring one, and the design of the groove two forms the limiting plate two on the inner ring two. At the same time, the groove one and the groove two provide space for the installation of the bolt assembly. The limiting plate one and the limiting plate two are connected and fixed through the bolt assembly to realize the fixed connection between the inner ring one and the inner ring two, effectively ensuring the structural stability and reliability of the bearing inner ring after assembly. Moreover, the bolt connection is convenient for disassembly and assembly, facilitating the actual assembly and subsequent maintenance and repair, etc.
[0016] Due to the adoption of the above technical solutions, the present utility model has the following beneficial effects:
[0017] The structure of the present utility model is ingeniously and reasonably designed and has strong practicability. The angular contact bearing of the present utility model is a double-row angular contact ball bearing. Compared with the traditional single-row deep groove ball bearing, it has the advantages of strong load-bearing capacity and can simultaneously bear radial and axial loads. Moreover, a retaining ring and a retaining pin are integrally provided on the bearing outer ring, thus forming two limiting parts, namely a limiting part one and a limiting part two, to limit the rotation of the bearing outer ring, effectively improving the axial positioning performance of the bearing and the ability of the bearing to resist impact loads. It has the characteristics of strong load-bearing capacity, wide application range, long service life, etc. In the processing of the double-row raceways of the present utility model, the forming grinding wheel double-groove one-time grinding technology is adopted. Through the development of the profiling grinding wheel grinding technology, problems such as low processing efficiency of double grooves by successive processing and low one-time assembly rate are solved, improving the consistency of parameters such as the surface quality of the raceways and the position of the double raceways after grinding, shortening the production cycle, and doubling the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The following further describes the present utility model with reference to the drawings:
[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;
[0020] Figure 2 is Figure 1 a partial enlarged structural diagram at I in
[0021] Figure 3Schematic diagram of the structure of the second embodiment of the present utility model;
[0022] Figure 4 is Figure 3 Partial enlarged structural schematic diagram of the II position in
[0023] Figure 5 is Figure 3 Partial enlarged structural schematic diagram of the III position in
[0024] In the figure: 1 - Inner ring of bearing; 2 - Outer ring of bearing; 3 - Ball; 4 - Cage; 5 - Retaining groove; 6 - Retaining ring; 7 - First limiting part; 8 - Stop pin; 9 - Second limiting part; 10 - Arc chamfer; 11 - First inner ring; 12 - Second inner ring; 13 - First positioning block; 14 - First positioning groove; 15 - Second positioning block; 16 - Second positioning groove; 17 - First groove; 18 - First limiting plate; 19 - Second groove; 20 - Second limiting plate; 21 - Bolt assembly. Specific implementation manner
[0025] As Figure 1 and Figure 2 shown, for the first embodiment of the present utility model, an angular contact ball bearing includes an inner ring of bearing 1, an outer ring of bearing 2, balls 3 and a cage 4. A double-row raceway is formed between the inner ring of bearing 1 and the outer ring of bearing 2. A retaining groove 5 is provided on the outer wall of the middle part of the outer ring of bearing 2. A retaining ring 6 is arranged in the retaining groove 5. One end of the retaining ring 6 extends to the outside of the retaining groove 5 to form a first limiting part 7; a stop pin 8 is arranged on the outer wall of the outer ring of bearing 2. The head of the stop pin 8 is limited and protrudes on the outer wall of the outer ring of bearing 2 to form a second limiting part 9; the structural design is ingenious and reasonable, and the practicability is strong. The retaining ring 6 and the stop pin 8 are integrally arranged on the outer ring of bearing 2, thereby forming two limiting parts, namely the first limiting part 7 and the second limiting part 9, to limit the rotation of the outer ring of bearing 2, effectively improving the axial positioning performance of the bearing and the ability of the bearing to resist impact loads, and having the characteristics of strong load-bearing capacity, wide application range, long service life, etc.
[0026] Arc chamfers 10 are provided on both the inner ring of bearing 1 and the outer ring of bearing 2. The design of the arc chamfers 10 can remove burrs, facilitate the actual assembly of the bearing, reduce stress concentration, enhance the structural strength of the inner ring of bearing 1 and the outer ring of bearing 2, and improve the service life and reliability of the bearing. The inner ring of bearing 1 and the outer ring of bearing 2 are subjected to salt bath heat treatment. Through the salt bath heat treatment, the surfaces of the inner ring of bearing 1 and the outer ring of bearing 2 obtain higher hardness, improve abrasion resistance and durability, and extend the service life of the bearing.
[0027] The outer ring 2 of the bearing is an integrally formed structure. The integrally formed design can ensure the structural strength and stability of the outer ring 2 of the bearing, reduce the number of parts, and facilitate the actual installation of the bearing. Moreover, the integrally formed structure endows the outer ring 2 of the bearing with high rigidity, enabling it to better resist external deformation and impact, which helps to improve the bearing capacity and running accuracy of the bearing, making the bearing applicable to application scenarios with higher precision requirements and expanding its scope of application. The inner ring 1 of the bearing is an integrally formed structure. The integrally formed structure gives the inner ring 1 of the bearing better structural stability. In combination with the integrally formed design of the outer ring 2 of the bearing, it can effectively improve the overall structural strength and bearing capacity of the bearing, reduce the number of parts, and facilitate the actual installation of the bearing.
[0028] The included angle α formed by the connecting line of the contact points of the rolling balls 3 with the inner ring 1 and the outer ring 2 of the bearing and the radial direction is 25° to 30°. The design is ingenious and reasonable. Limiting the contact angle α of the bearing between 25° and 30° can ensure the axial bearing capacity of the bearing and improve the stability and reliability during the operation of the bearing. The rolling balls 3 are steel balls, which are arranged between the inner ring 1 and the outer ring 2 of the bearing. Using steel balls as the rolling balls 3 facilitates lubrication operations. Moreover, the steel balls have good wear resistance, ensuring that the bearing can still maintain stable performance after long-term operation, extending the service life of the bearing. In addition, the steel balls have high strength and bearing capacity and can withstand large radial and axial loads.
[0029] As Figures 3 to 5 shown, this is the second embodiment of the present utility model. Based on the technical solution of the first embodiment, the inner ring 1 of the bearing is designed as a split structure. The inner ring 1 includes an inner ring one 11 and an inner ring two 12. A channel one is formed between the inner ring one 11 and the outer ring 2 of the bearing, and a channel two is formed between the inner ring two 12 and the outer ring 2 of the bearing. The rolling balls 3 are arranged in both the channel one and the channel two. The cage 4 evenly distributes the rolling balls 3 in the channel one and the channel two. Designing the inner ring 1 of the bearing as a split design of the inner ring one 11 and the inner ring two 12 can facilitate subsequent maintenance and replacement. When there is a problem with the inner ring one 11 or the inner ring two 12, only the corresponding inner ring part needs to be replaced, without replacing the entire inner ring 1 of the bearing, reducing the maintenance cost.
[0030] A positioning block one 13 and a positioning groove one 14 are provided on the end face of the inner ring one 11, and a positioning block two 15 and a positioning groove two 16 are provided on the end face of the inner ring two 12. The positioning block one 13 is fitted and clamped in the positioning groove two 16, and the positioning block two 15 is fitted and clamped in the positioning groove one 14. The matching clamping of the positioning block one 13 and the positioning groove two 16 and the matching clamping of the positioning block two 15 and the positioning groove one 14 can achieve the precise clamping between the inner ring one 11 and the inner ring two 12, facilitating the actual assembly and positioning.
[0031] A groove 17 is provided on the first inner ring 11, so that a first limiting plate 18 is formed on the first inner ring 11. A groove 19 is provided on the second inner ring 12, so that a second limiting plate 20 is formed on the second inner ring 12. The first limiting plate 18 is fixedly connected to the corresponding second limiting plate 20 through a bolt assembly 21. The structural design is ingenious and reasonable. The design of the groove 17 enables the formation of the first limiting plate 18 on the first inner ring 11, and the design of the groove 19 enables the formation of the second limiting plate 20 on the second inner ring 12. At the same time, the grooves 17 and 19 provide space for the installation of the bolt assembly 21. The first limiting plate 18 and the second limiting plate 20 are connected and fixed through the bolt assembly 21 to realize the fixed connection between the first inner ring 11 and the second inner ring 12, effectively ensuring the structural stability and reliability of the assembled bearing inner ring 1. Moreover, the bolt connection is convenient for disassembly and assembly, facilitating actual assembly and subsequent maintenance and repair, etc.
[0032] The structural design of the present utility model is ingenious and reasonable, and it has strong practicability. The angular contact bearing of the present utility model is a double-row angular contact ball bearing. Compared with the traditional single-row deep groove ball bearing, it has the advantages of strong load-bearing capacity and can bear radial and axial loads simultaneously. Moreover, a retaining ring 6 and a retaining pin 8 are integrally arranged on the bearing outer ring 2, thus forming two limiting parts, namely a first limiting part 7 and a second limiting part 9, to limit the rotation of the bearing outer ring 2, effectively improving the axial positioning performance of the bearing and the ability of the bearing to resist impact loads. It has the characteristics of strong load-bearing capacity, wide application range, long service life, etc. In the processing of the double-row raceways of the present utility model, the forming grinding wheel double-groove one-time grinding technology is adopted. Through the development of the profiling grinding wheel grinding technology, problems such as low processing efficiency of double grooves processed sequentially and low one-time assembling rate are solved, improving the consistency of parameters such as the surface quality of the raceways after grinding and the positions of the double raceways, shortening the production cycle, and increasing the production efficiency by more than one time.
[0033] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present utility model to achieve substantially the same technical effects are all covered by the protection scope of the present utility model.
Claims
1. An angular contact ball bearing, comprising a bearing inner ring, a bearing outer ring, balls and a cage; Its characteristics are: A stop groove is provided on the middle outer wall of the bearing outer ring, a stop ring is provided in the stop groove, and one end of the stop ring extends to the outside of the stop groove to form a limiting portion 1; The outer wall of the bearing outer ring is provided with a stop pin, and the head of the stop pin protrudes from the outer wall of the bearing outer ring to form a second limit portion.
2. An angular contact ball bearing according to claim 1, characterized in that: Arc chamfers are arranged on the bearing inner ring and the bearing outer ring.
3. The angular contact ball bearing according to claim 1, characterized in that: The bearing outer ring is an integrally formed structure.
4. The angular contact ball bearing according to claim 1, characterized in that: The bearing inner ring is an integrally formed structure.
5. The angular contact ball bearing according to claim 1, characterized in that: The angle α formed by the connecting line of the contact points between the ball and the inner ring and the outer ring of the bearing and the radial direction is 25-30°.
6. The angular contact ball bearing according to claim 1, characterized in that: The bearing inner ring and the bearing outer ring are heat treated in a salt bath.
7. The angular contact ball bearing according to claim 1, characterized in that: The balls are steel balls, and the steel balls are arranged between the inner ring of the bearing and the outer ring of the bearing.
8. The angular contact ball bearing according to claim 1, characterized in that: The inner ring of the bearing includes inner ring one and inner ring two, channel one is formed between the inner ring one and the outer ring of the bearing, channel two is formed between the inner ring two and the outer ring of the bearing, balls are arranged in both channel one and channel two, and the retaining frame evenly distributes the balls in channel one and channel two.
9. An angular contact ball bearing according to claim 8, characterized in that: A positioning block 1 and a positioning groove 1 are arranged on the end face of the inner ring 1, and a positioning block 2 and a positioning groove 2 are arranged on the end face of the inner ring 2. The positioning block 1 is matched and snap-fitted into the positioning groove 2, and the positioning block 2 is matched and snap-fitted into the positioning groove 1.
10. The angular contact ball bearing according to claim 8, characterized in that: The inner ring 1 is provided with a groove 1, so that a limiting plate 1 is formed on the inner ring 1, and the inner ring 2 is provided with a groove 2, so that a limiting plate 2 is formed on the inner ring 2, and the limiting plate 1 is fixedly connected with the corresponding limiting plate 2 by a bolt assembly.