CN215567266U - Thrust centripetal combined ball bearing - Google Patents
Thrust centripetal combined ball bearing Download PDFInfo
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- CN215567266U CN215567266U CN202121356409.9U CN202121356409U CN215567266U CN 215567266 U CN215567266 U CN 215567266U CN 202121356409 U CN202121356409 U CN 202121356409U CN 215567266 U CN215567266 U CN 215567266U
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- thrust
- ball
- oil injection
- compression spring
- steel ball
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Abstract
The utility model relates to the technical field of bearings, and particularly discloses a thrust and radial combined ball bearing which comprises a seat ring, a middle ring and an inner ring, wherein a thrust steel ball and a first roller path for the thrust steel ball to roll are arranged between the end surface of the seat ring and the end surface of the middle ring, a first retainer is arranged on the thrust steel ball, the middle ring is arranged in a hollow manner, the inner ring is positioned in a hollow cavity of the middle ring, a radial steel ball and a second roller path for the radial steel ball to roll are arranged between the inner wall of the middle ring and the outer wall of the inner ring, and a second retainer is arranged on the radial steel ball. By adopting the structure, the combined thrust and radial ball bearing capable of bearing both axial force and radial force is provided.
Description
Technical Field
The utility model relates to the technical field of bearings, in particular to a radial thrust combined ball bearing.
Background
At present, in order to meet the requirements of upgrading and upgrading domestic high-end equipment and realizing comprehensive numerical control, research on a bearing (turntable bearing) for a high-precision numerical control turntable is carried out. The turntable bearing is widely applied to equipment which is required to bear larger axial force and overturning moment, and the common turntable bearing has low precision and low rotating speed; high-end equipment requires the characteristics of high precision, high rigidity and high rotating speed of a numerical control turntable, and a common turntable bearing cannot meet the performance requirement. The prior precision turntable bearing structure has the following defects: (1) the clearance cannot be adjusted to a negative clearance state; (2) does not have high rigidity characteristics; (3) the bearing has a slipping phenomenon when rotating, so that the allowable rotating speed is limited; (4) the processing technology of the ferrule is high in requirement.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the radial-thrust combined ball bearing capable of bearing axial force and radial force.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a thrust centripetal combination ball bearing, includes seat circle, well circle and inner circle, be provided with the thrust steel ball between the terminal surface of seat circle and the terminal surface of well circle and supply the rolling first raceway of thrust steel ball, be provided with first retainer on the thrust steel ball, well circle is the cavity setting, the inner circle is located the cavity intracavity of well circle, be provided with centripetal steel ball and supply the rolling second raceway of centripetal steel ball between the inner wall of well circle and the outer wall of inner circle, be provided with the second retainer on the centripetal steel ball.
As a further configuration of the present invention, the first cage is a stamped iron cage.
As a further arrangement of the present invention, the second holder is a nylon holder.
As a further arrangement of the utility model, the axial sections of the middle ring and the inner ring are respectively in an L shape and a 7 shape which are mutually surrounded, and the thrust steel ball is positioned at the transverse end of the middle ring.
As a further arrangement of the utility model, the middle ring is provided with a three-way oil injection hole, the three-way oil injection hole comprises an inlet channel and a thrust oil injection channel which are distributed along the axial direction and a centripetal oil injection channel which is distributed along the radial direction, the thrust oil injection channel is communicated with the first roller path, the centripetal oil injection channel is communicated with the second roller path, and the thrust oil injection channel and the centripetal oil injection channel are both provided with a blocking structure.
As a further arrangement of the utility model, the blocking structure comprises a compression spring and a ball, one end of the thrust oil injection channel, which is close to the first roller path, is used for accommodating the blocking structure to form a first installation cavity, one end, which is far away from the first roller path, is communicated with the inlet channel to form a first connecting end, a first annular shoulder step with the inner diameter smaller than the diameter of the ball is arranged on the inner wall of the first connecting end, the ball can be abutted against the first annular shoulder under the driving of the compression spring to form a sealing arrangement, one end of the centripetal oiling channel close to the second roller path is used for accommodating the blocking structure to form a second mounting cavity, one end far away from the second roller path is communicated with the inlet channel to form a second connecting end, a second annular shoulder step with the inner diameter smaller than the diameter of the ball is arranged on the inner wall of the second connecting end, the ball can be abutted against the second annular shoulder under the driving of the compression spring to form a sealing arrangement.
As a further arrangement of the utility model, a first convex ring for abutting against the compression spring is arranged on the inner wall of one end of the first installation cavity far away from the first connecting end, one end of the compression spring abuts against the first convex ring, the other end of the compression spring abuts against the ball, a second convex ring for abutting against the compression spring is arranged on the inner wall of one end of the second installation cavity far away from the second connecting end, one end of the compression spring abuts against the second convex ring, and the other end of the compression spring abuts against the ball.
In the technical scheme, the middle ring, the inner ring, the centripetal steel ball and the nylon retainer form the centripetal ball bearing to bear the radial load and the moment caused by unbalance loading, and the seat ring, the middle ring, the thrust steel ball and the punching iron retainer form the thrust ball bearing to bear the axial load.
The utility model is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a structural cross-sectional view of an embodiment of the present invention;
FIG. 2 is a structural sectional view of an embodiment of the present invention.
Detailed Description
The specific embodiment of the utility model is shown in fig. 1-2, and the combined thrust-centripetal ball bearing comprises a seat ring 7, a middle ring 4 and an inner ring 1, wherein a thrust steel ball 5 and a first raceway 51 for the thrust steel ball 5 to roll are arranged between the end surface of the seat ring 7 and the end surface of the middle ring 4, a first retainer 6 is arranged on the thrust steel ball 5, the middle ring 4 is arranged in a hollow manner, the inner ring 1 is positioned in the hollow cavity of the middle ring 4, a centripetal steel ball 2 and a second raceway 21 for the centripetal steel ball 2 to roll are arranged between the inner wall of the middle ring 4 and the outer wall of the inner ring 1, and a second retainer 3 is arranged on the centripetal steel ball 2.
The first holder 6 is a press iron holder.
The second holder 3 is a nylon holder.
The axial sections of the middle ring 4 and the inner ring 1 are respectively in an L shape and a 7 shape which are mutually surrounded, and the thrust steel ball 5 is positioned at the transverse end of the middle ring 4.
In the technical scheme, the middle ring 4, the inner ring 1, the centripetal steel ball 2 and the nylon retainer form a centripetal ball bearing to bear the torque caused by radial load and unbalance load, and the seat ring 7, the middle ring 4, the thrust steel ball 5 and the punching iron retainer form a thrust ball bearing to bear axial load.
The middle ring 4 is provided with a three-way oil filling hole 41, the three-way oil filling hole 41 comprises an inlet channel 411 and a thrust oil filling channel 412 which are distributed along the axial direction, and a centripetal oil filling channel 413 which is distributed along the radial direction, the thrust oil filling channel 412 is communicated with the first rolling way 51, the centripetal oil filling channel 413 is communicated with the second rolling way 21, and the thrust oil filling channel 412 and the centripetal oil filling channel 413 are both provided with a blocking structure 8.
The blocking structure 8 comprises a compression spring 81 and a ball 82, one end of the thrust oil injection channel 412 close to the first raceway 51 is used for accommodating the blocking structure 8 to form a first mounting cavity 4121, one end far away from the first raceway 51 is communicated with the inlet channel 411 to form a first connecting end 4122, a first annular shoulder 4124 having an inner diameter smaller than that of the balls 82 is provided on an inner wall of the first coupling end 4122, the balls 82 are urged by the compression spring 81 to abut against the first annular shoulder 4124 to form a blocking arrangement, one end of the centripetal oil injection channel 413 close to the second roller path 21 is used for accommodating the blocking structure 8 to form a second mounting cavity 4131, one end far away from the second roller path 21 is communicated with the inlet channel 411 to form a second connecting end 4132, a second annular shoulder 4134 having an inner diameter smaller than that of the balls 82 is provided on an inner wall of the second coupling end 4132, the balls 82 are urged by the compression spring 81 to abut against the second annular shoulder 4134 to form a sealing arrangement.
A first convex ring 4123 for abutting against the compression spring 81 is arranged on the inner wall of one end of the first mounting cavity 4121 far away from the first connection end 4122, one end of the compression spring 81 abuts against the first convex ring 4123, the other end of the compression spring abuts against the ball 82, a second convex ring 4133 for abutting against the compression spring 81 is arranged on the inner wall of one end of the second mounting cavity 4131 far away from the second connection end 4132, one end of the compression spring 81 abuts against the second convex ring 4133, and the other end of the compression spring 81 abuts against the ball 82.
The setting of block structure 8 can avoid lubricating oil excessive, keeps operational environment's clean and tidy. During oil injection, lubricating oil is injected from the inlet channel 411, enters and extrudes the respective balls 82 through the first connecting end 4122 and the second connecting end 4132, the two balls 82 are respectively pushed towards the first raceway 51 and the second raceway 21, the balls 82 are separated from the first connecting end 4122 or the second connecting end 4132, the blocking matching is removed, the lubricating oil enters the first mounting cavity 4121 or the second mounting cavity 4131 through a gap between the balls 82 and the first connecting end 4122 or the second connecting end 4132, and as the mounting cavities are communicated with the raceways, so that the lubricating oil can enter the raceway after passing through the mounting cavity, and when the oil is not filled, the balls 82 abut against the first annular shoulder 4124 or the second annular shoulder 4134 under the elastic force of the compression spring 81 to form a blocking fit, and redundant lubricating oil in the raceway also has extrusion force on the ball 82, so that the ball 82 can be stably abutted to the first connecting end 4122 or the second connecting end 4132, and the structure is simple and stable. The diameters of the first mounting cavity 4121 and the second mounting cavity 4131 are larger than the diameters of the first annular shoulder 4124 and the second annular shoulder 4134, so that the ball 82 can be conveniently mounted, the arrangement of the first convex ring 4123 and the second convex ring 4133 can facilitate the abutting of the compression spring 81, and the processing is convenient.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.
Claims (7)
1. A radial thrust combined ball bearing is characterized in that: including seat circle, well circle and inner circle, be provided with the thrust steel ball between the terminal surface of seat circle and the terminal surface of well circle and supply the rolling first raceway of thrust steel ball, be provided with first holder on the thrust steel ball, well circle is the cavity setting, the inner circle is located the cavity intracavity of well circle, be provided with the steel ball and supply the rolling second raceway of steel ball entad to the heart between the inner wall of well circle and the outer wall of inner circle, be provided with the second holder on the steel ball entad.
2. A combined thrust and radial ball bearing according to claim 1, wherein: the first retainer is a stamped iron retainer.
3. A combined thrust-centripetal ball bearing according to claim 1 or 2, wherein: the second retainer is a nylon retainer.
4. A combined thrust and radial ball bearing according to claim 3, wherein: the axial sections of the middle ring and the inner ring are respectively in an L shape and a 7 shape which are mutually surrounded, and the thrust steel ball is positioned at the transverse end of the middle ring.
5. Combined thrust and radial ball bearing according to claim 1, 2 or 4, characterized in that: the oil injection structure is characterized in that a three-way oil injection hole is formed in the middle ring, the three-way oil injection hole comprises an inlet channel and a thrust oil injection channel which are distributed along the axial direction and a centripetal oil injection channel which are distributed along the radial direction, the thrust oil injection channel is communicated with the first roller path, the centripetal oil injection channel is communicated with the second roller path, and the thrust oil injection channel and the centripetal oil injection channel are both provided with a blocking structure.
6. A combined thrust and radial ball bearing according to claim 5, wherein: the blocking structure comprises a compression spring and a ball, one end of the thrust oil injection channel, which is close to the first raceway, is used for accommodating the blocking structure to form a first installation cavity, one end, which is far away from the first raceway, is communicated with the inlet channel to form a first connection end, a first annular shoulder with the inner diameter smaller than that of the ball is arranged on the inner wall of the first connection end, the ball can be abutted against the first annular shoulder to form a blocking device under the driving of the compression spring, one end, which is close to the second raceway, of the centripetal oil injection channel is used for accommodating the blocking structure to form a second installation cavity, one end, which is far away from the second raceway, is communicated with the inlet channel to form a second connection end, a second annular shoulder with the inner diameter smaller than that of the ball is arranged on the inner wall of the second connection end, and the ball can be abutted against the second annular shoulder to form a blocking device under the driving of the compression spring.
7. A combined thrust and angular ball bearing according to claim 6, wherein: the inner wall of one end, away from the first connecting end, of the first mounting cavity is provided with a first convex ring for the compression spring to abut against, one end of the compression spring abuts against the first convex ring, the other end of the compression spring abuts against the ball, the inner wall of one end, away from the second connecting end, of the second mounting cavity is provided with a second convex ring for the compression spring to abut against, one end of the compression spring abuts against the second convex ring, and the other end of the compression spring abuts against the ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121356409.9U CN215567266U (en) | 2021-06-17 | 2021-06-17 | Thrust centripetal combined ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121356409.9U CN215567266U (en) | 2021-06-17 | 2021-06-17 | Thrust centripetal combined ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567266U true CN215567266U (en) | 2022-01-18 |
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ID=79818217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121356409.9U Active CN215567266U (en) | 2021-06-17 | 2021-06-17 | Thrust centripetal combined ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567266U (en) |
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2021
- 2021-06-17 CN CN202121356409.9U patent/CN215567266U/en active Active
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