CN117739008A - Ball type high-speed radial spherical plain bearing - Google Patents
Ball type high-speed radial spherical plain bearing Download PDFInfo
- Publication number
- CN117739008A CN117739008A CN202410018581.5A CN202410018581A CN117739008A CN 117739008 A CN117739008 A CN 117739008A CN 202410018581 A CN202410018581 A CN 202410018581A CN 117739008 A CN117739008 A CN 117739008A
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- Prior art keywords
- outer ring
- ball
- plain bearing
- spherical plain
- joint ball
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 18
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 238000001125 extrusion Methods 0.000 description 18
- 238000005461 lubrication Methods 0.000 description 10
- 238000003754 machining Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Support Of The Bearing (AREA)
Abstract
The invention discloses a ball type high-speed radial spherical plain bearing, which comprises an outer ring, a joint ball, a steel ball and a baffle plate, wherein the outer ring is provided with an inner hole, and the inner side of the inner hole is spherical; the joint ball is assembled in the middle of the inner hole of the outer ring; two or more rows of raceway grooves are arranged on the outer side of the joint ball, and the steel balls are uniformly distributed in the raceway grooves; one side of the steel ball is contacted with the spherical surface of the inner side of the outer ring, and the other side of the steel ball is contacted with the raceway groove of the joint ball; the two side surfaces of the outer ring are provided with baffle plates; the outer ring is provided with an oil groove; the oil groove is provided with two oil ways which are communicated with the inner spherical surface of the outer ring, the inner side surface of the outer ring is spherical, and the two sides of the outer ring are provided with mounting grooves for mounting the baffle plates. According to the invention, through optimizing and changing the internal structure and the process, during assembly, the small tolerance of the inner spherical surface of the outer ring and the joint ball race groove generated by grinding can be regulated by steel balls with different sizes, and reasonable assembly is performed to ensure the play value, so that the rolling gap is uniform, the rolling is smooth, and the precision is very high.
Description
Technical Field
The invention relates to the field of bearings, in particular to a high-speed radial spherical plain bearing.
Background
Bearings are an important component in contemporary mechanical devices. Its main function is to support the mechanical rotator, reduce the friction coefficient in the course of its movement and ensure its rotation accuracy.
The structure of the conventional extrusion type self-lubricating radial spherical plain bearing is shown in fig. 5: consists of an extrusion type self-lubricating radial spherical plain bearing outer ring (figure 1), a self-lubricating copper net (figure 2) and a spherical plain bearing (figure 3). The assembly method comprises the following steps: firstly, a self-lubricating copper net (figure 2) is placed into a groove of an extrusion type self-lubricating radial spherical plain bearing outer ring (figure 1), then a joint ball (figure 3) is placed into an inner hole of the extrusion type self-lubricating radial spherical plain bearing outer ring (figure 1), the extrusion type self-lubricating radial spherical plain bearing outer ring (figure 1) is extruded through external force, the extrusion type self-lubricating radial spherical plain bearing outer ring is deformed to achieve the purpose of fitting a joint ball cambered surface (figure 4), the outer diameter and the end face of the extrusion type self-lubricating radial spherical plain bearing outer ring are machined to meet specified requirements (figure 5) through machining, and finally the sliding and swinging purposes are achieved through adjusting the gap between the joint ball and self-lubricating.
The structure of the conventional extrusion type oil-lubricated radial spherical plain bearing is shown in fig. 9: the radial spherical plain bearing comprises an extrusion type oil lubrication radial spherical plain bearing outer ring (figure 6) and a spherical plain bearing (figure 7), wherein oil grooves and oil holes are formed in the outer ring (figure 6) and the spherical plain bearing (figure 7). The assembly method is that firstly, the joint ball (figure 7) is put into an inner hole of an outer ring of an oil lubrication radial spherical joint bearing (figure 6), the outer ring of the oil lubrication radial spherical joint bearing (figure 6) is extruded by external force to deform so as to be attached to an arc surface of the joint ball (figure 8), the outer diameter and the end surface of the outer ring of the extrusion type oil lubrication radial spherical joint bearing are machined to specified requirements (figure 9), finally, the gap between the joint ball and self lubrication is adjusted, lubricating oil can be injected through an oil hole when the assembly method is used, and the lubricating oil reaches the spherical surface of the joint ball through the oil hole and an oil groove, so that the purposes of sliding and swinging are achieved.
The structure of the conventional single-slit self-lubricating radial spherical plain bearing is shown in a figure (14): comprises a self-lubricating radial spherical plain bearing outer ring (figure 10), a self-lubricating fabric (figure 11) and a spherical plain bearing (figure 12). The assembly mode is that firstly, a single-slit self-lubricating radial spherical plain bearing outer ring (figure 10) is ground to a specified size, a slit is axially formed in the single-slit self-lubricating radial spherical plain bearing outer ring (figure 10), glue is coated on the inner spherical surface of the single-slit self-lubricating radial spherical plain bearing outer ring (figure 10), then a self-lubricating fabric (figure 11) is adhered to the inner spherical surface of the single-slit self-lubricating radial spherical plain bearing outer ring (figure 10), a joint ball (figure 12) is placed on the outer surface of the single-slit self-lubricating radial spherical plain bearing outer ring (figure 13), the joint ball is pressed into the outer ring through external force, and in the pressing process, the outer ring is provided with an axial slit, the slit is elastically deformed when pressed under the force, the slit is spread, and after the joint ball is completely pressed into the outer ring, the slit can retract due to the elastic action, only a slit of about 0.02-0.05 mm is left after the joint ball is finished, and the effects of lubrication and swing are achieved.
The structure of a conventional single slit type oil-lubricated radial spherical plain bearing is shown in fig. 18: the radial spherical plain bearing comprises a single-slit oil lubrication radial spherical plain bearing outer ring (figure 15) and a spherical plain bearing (figure 16), wherein oil grooves and oil holes are formed in the surfaces of the outer ring (figure 15) and the spherical plain bearing (figure 16). The assembly mode is that firstly, a single-slit oil lubrication radial spherical plain bearing outer ring (figure 15) is ground to a specified size, a slit is axially formed in the single-slit oil lubrication radial spherical plain bearing outer ring (figure 15), then a joint ball (figure 16) is placed on the single-slit oil lubrication radial spherical plain bearing outer ring (figure 17), in the pressing-in process, as the outer ring is provided with an axial slit, the slit can be elastically deformed when being pressed in under the action of force, the slit is spread, after the joint ball is completely pressed in the outer ring, the slit can retract due to the elastic action, only a slit of about.02-0.05 mm is left after the joint ball is finished, lubricating oil is injected through an oil hole in the using process, and the lubricating oil flows to the surface of the joint ball along an oil groove, so that the lubricating and swinging effects are achieved.
The structure of the conventional extrusion type radial spherical plain bearing is shown in fig. 19: comprising an outer periphery 10, an inner ring 20 and a lubricating material 30. The assembly mode is that firstly, the inner ring 20 and the lubricating material 30 are installed in the outer ring 0, three parts form a centripetal joint bearing, then the sliding clearance between the inner ring 20 and the lubricating material 30 is adjusted, the purposes of sliding and swinging are achieved, and the bearing can only be in a sliding friction structure at present, the bearing force is relatively large, but the rotating speed is very low and generally cannot exceed 300 revolutions per minute, otherwise, the bearing can be burnt out due to overheating caused by large friction coefficient and large friction surface.
The extrusion type self-lubricating radial spherical plain bearing (figure 5) and the extrusion type oil-lubricating radial spherical plain bearing (figure 9) are molded, then the sliding and swinging purposes are achieved by adjusting the sliding gap between the spherical plain bearing and the self-lubricating spherical plain bearing or between the spherical plain bearing and the outer ring, the sliding gap is very difficult to adjust to an ideal degree, the phenomenon of local clamping stagnation or unsmooth swinging is caused by small gap, the built-in spherical plain bearing can axially move when the gap is too large, and the service life is influenced by the fact that the gap is too large.
Above, because extrusion type self-lubricating radial spherical plain bearing (figure 5) and single slit type self-lubricating radial spherical plain bearing (figure 14) are provided with a layer of self-lubricating material between the spherical plain bearing and the outer ring, the self-lubricating material is a flexible piece, so that the rigidity of the product is poor, and the use effect can be poor in the occasions of impact, vibration, dust or the like.
The five radial spherical plain bearings (fig. 5, 9, 14 and 18) can only be of sliding friction structures at present, and the bearing capacity is relatively large, but the rotating speed is very low and generally cannot exceed 300 revolutions per minute, otherwise, the radial spherical plain bearings can easily generate heat in a working state of high-speed rotation because of large friction coefficient and large friction surface, burn out the bearings, even cause the phenomenon of seizing, influence the service life of the radial spherical plain bearings, and cannot meet the use requirement of high-speed operation.
The four rod end joint bearings (fig. 5, 9, 14 and 18) have large sliding friction contact areas and large friction resistance, so that the starting torque is increased in the use process, and the corresponding motor power is increased. The use cost is increased, and the energy waste is further caused. And because the starting moment is large, some precise control occasions are not suitable.
In summary, the existing radial spherical plain bearing has the following defects:
(1) the rotating speed is lower, the friction resistance is large, the overheating is easy to occur and the energy consumption of the motor is increased,
(2) the sliding gap is inconvenient to adjust.
In view of this, we have made technical innovations on the basis of existing products.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a high-speed ball type radial spherical plain bearing which is suitable for use in a high-speed environment and has a low starting torque. Because of the rolling friction structure, the friction coefficient is very low, the contact area between the steel ball and the inner joint ball and the spherical surface of the outer rod end body is very small, and because of the very high use rotating speed, the actual measurement of the current product reaches 10000 revolutions per minute. The steel ball, the joint ball and the inner spherical surface of the outer ring are all precisely machined and are quenching parts, so that the self-lubricating rod end joint bearing has good rigidity, and the problem of insufficient rigidity of the original self-lubricating material of the self-lubricating rod end joint bearing is solved. And is wear-resistant and has long service life. Because of the special structural design, the requirements of high-speed rolling and swinging are realized, and the two movements can be performed simultaneously, and the self-aligning function is realized while the high-speed rotation is realized.
In order to achieve the above purpose, the present invention is realized by the following technical scheme: the high-speed ball type radial spherical joint bearing comprises an outer ring, a joint ball, a steel ball and a baffle, wherein an inner hole is formed in the outer ring, and the inner side of the inner hole is spherical; the joint ball is assembled in the middle of the inner hole; two or more rows of raceway grooves are arranged on the outer side of the joint ball, and steel balls are uniformly distributed in the raceway grooves; one side of the steel ball is contacted with the spherical surface of the inner side of the outer ring, and the other side of the steel ball is contacted with the raceway groove of the joint ball; the two side surfaces of the outer ring are provided with baffle plates; the outer ring is provided with an oil groove; the oil groove is provided with two oil ways which are communicated with the inner spherical surface of the inner hole of the outer ring.
Preferably, the inner side of the outer ring is spherical.
Preferably, the two sides of the outer ring are provided with mounting grooves for mounting the baffle plates.
Preferably, the outer side surface of the outer ring is provided with an oil groove.
Preferably, an oil hole is formed in the oil groove of the outer side surface of the outer ring and is communicated with the inner spherical surface of the outer ring.
Preferably, two symmetrical convex cylinders are arranged on two sides of the joint ball.
Preferably, the joint ball outer ring has two or more rows of raceway grooves.
Preferably, the single track groove may be one circular track groove or two symmetrical circular track grooves.
The beneficial effects of the invention are as follows:
1. according to the invention, through changing the internal structure and the process, two or more rows of raceway grooves on the outer ring of the joint ball adopt a grinding process, the steel balls are separated into precision size sections of 1 micron by adopting the grinding process, the spherical surface on the inner side of the outer circle is also ground, all grinding forces have high machining precision, and during assembly, the small tolerance of the inner diameter surface of the outer ring and the raceway grooves of the joint ball generated by grinding can be blended by steel balls with different sizes for reasonable assembly so as to ensure a play value, so that the rolling clearance is uniform, the rolling is smooth, and the precision is very high. The contact point of the steel ball with the joint ball has 2 forms, as shown in fig. 4 and 5. The structure of fig. 4 has a higher rotational speed and the structure of fig. 5 has a larger load, one of which can be freely selected according to the use condition.
2. In the use process, the rolling and swinging of the joint ball are transmitted by the steel ball between the joint ball and the outer ring, one side of the steel ball is in point-to-point contact with the ball surface on the inner side of the shell, and the other side of the steel ball is in single-point or two-point contact with the raceway groove of the joint ball, so that the whole rolling contact area is reduced, the rolling friction coefficient in the use process is reduced, the rolling friction is only 1/40 to 1/60 of the sliding friction resistance, the starting torque in the use process is greatly reduced, and the use energy consumption is greatly reduced in the use process.
3. While the existing radial spherical plain bearing adopts a sliding friction movement mode, the invention adopts a rolling friction movement mode, and under the same load, the rolling friction is only 1/40 to 1/60 of the sliding friction resistance; the rolling friction resistance is low, the heat dissipation is fast, the requirements of high-speed rolling and swinging are met, the two movements can be carried out simultaneously, and the self-aligning function is achieved while the high-speed rotation is carried out.
Drawings
FIG. 1 is a schematic view of an outer race of an extrusion type radial spherical plain bearing;
FIG. 2 is a schematic view of a self-lubricating copper mesh;
FIG. 3 is a schematic view of an extrusion type radial spherical plain bearing knuckle;
FIG. 4 is a schematic view of an extrusion type radial spherical plain bearing before machining;
FIG. 5 is a schematic view of an extrusion type radial spherical plain bearing after machining;
FIG. 6 is a schematic view of an oil lubricated radial spherical plain bearing outer race;
FIG. 7 is a schematic view of an oil lubricated spherical plain radial bearing knuckle;
FIG. 8 is a schematic diagram of an oil lubricated radial spherical plain bearing prior to machining;
FIG. 9 is a schematic illustration of an oil lubricated radial spherical plain bearing after machining;
FIG. 10 is a schematic view of a single split self-lubricating radial spherical plain bearing outer race;
FIG. 11 is a schematic illustration of a self-lubricating fabric;
FIG. 12 is a schematic view of a single slit self-lubricating type spherical plain radial bearing knuckle;
FIG. 13 is a schematic diagram of an assembly of a single slit self-lubricating radial spherical plain bearing;
FIG. 14 is a schematic view of a single slit self-lubricating radial spherical plain bearing;
FIG. 15 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing outer race;
FIG. 16 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing knuckle;
FIG. 17 is a schematic diagram of an assembly of a prior art single slit oil lubricated radial spherical plain bearing;
FIG. 18 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing;
FIG. 19 is a cross-sectional side view of the present invention with the direction of the arrow being the viewing angle;
FIG. 20 is a cross-sectional view of the front structure of the present invention with the direction of the arrow being the viewing angle direction;
FIG. 21 is a schematic view of the structure of the present invention;
FIG. 22 is a schematic view of a single point contact point of a steel ball with a raceway;
FIG. 23 is a schematic view of a steel ball and raceway dual point contact point;
in the figure: 10. an outer ring; 11. a mounting groove; 12. an oil groove; 13. an oil path; 20. a joint ball; 21. a raceway groove; 22, a cylinder; 30. a steel ball; 40. a baffle.
Detailed Description
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.
As shown in fig. 19 to 23, the present embodiment discloses a high-speed ball type radial spherical plain bearing, which comprises an outer ring 10, a spherical plain ball 20 and a steel ball 22; a cylinder; 30. the baffle 40. The outer ring 10 is provided with an inner hole, and the inner side of the inner hole is spherical: the joint ball 20 is assembled in the middle of the inner hole of the outer ring 10; two or more rows of raceway grooves 21 and steel balls 22 are arranged on the outer side of the joint ball 20; a cylinder; 30 are uniformly distributed in the raceway grooves 21; the steel ball 22; a cylinder; 30 one side is in spherical contact with the inner side of the outer ring 10, and the other side is in contact with the raceway groove 21 of the joint ball 20; the two sides of the outer ring 10 are provided with baffle plates 40; the outer ring 10 is provided with an oil groove 12; the oil groove 12 is provided with two oil ways 13 which are communicated with the inner spherical surface of the outer ring 10; by changing the internal structure and the processing technology, the precision of the product is improved, the rolling is smoother, and the use effect of the product is improved; the friction of the sliding block is changed into rolling friction, so that the starting torque is reduced, the use cost is reduced, and the energy consumption is reduced; the contact surface is reduced, the rolling resistance is reduced, the heat is small in the use process, the temperature is low, the heat dissipation is fast, and the service life of the product is prolonged; the contact area between the rolling bodies is small, the rolling resistance is low, the condition of high-speed running is met, and the requirement of high-speed rotation is met.
According to the invention, through changing the internal structure and the processing technology, the two rows of raceway grooves 21 on the outer ring 10 of the joint ball 20 adopt a grinding process, and the steel balls 22; a cylinder; 30 adopts a grinding grade process and is sorted into a precision size section of 1 micron, the spherical surface on the inner side of the outer ring 10 is also ground, all grinding precision is high, and steel balls 22 with different sizes can be used due to the small tolerance of the inner diameter surface of the outer ring 10 and the rollaway nest of the joint ball 20 generated by grinding during assembly; a cylinder; 30, to ensure the play value, so the rolling clearance is uniform, the rolling is smooth, and the precision is very high.
In the use process, the rolling and swinging of the joint ball 20 is realized by the steel ball 22 between the joint ball 20 and the outer ring 10; a cylinder; 30, steel balls 22; a cylinder; 30, the ball surface of one side and the inner side of the outer ring 10 are in point-to-point contact, and the raceway groove 21 of the joint ball 20 is in single-point or two-point contact, so that the whole rolling contact area is reduced, the rolling friction coefficient in the use process is reduced, the starting torque in the use process is greatly reduced, the use cost is saved, and the use energy consumption is reduced.
Only two or more rows of steel balls 22 are arranged between the spherical surface on the inner side of the outer ring 10 and the joint ball 20; a cylinder; 30, there is very big heat dissipation space between the two, so greatly reduced the phenomenon such as the ball of the joint 20 card is dead because overheated in the use, great improvement life.
The contact area between the rolling bodies is small, the rolling resistance is low, the heat dissipation is fast, the condition of high-speed running is met, and the requirement of high-speed rolling is met.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A high-speed ball type radial spherical plain bearing is characterized in that: the outer ring is provided with an inner hole, and the inner side of the inner hole is spherical; the joint ball is assembled in the middle of the inner hole; two or more rows of raceway grooves are arranged on the outer side of the joint ball, and steel balls are uniformly distributed in the raceway grooves; one side of the steel ball is contacted with the spherical surface of the inner side of the outer ring, and the other side of the steel ball is contacted with the raceway groove of the joint ball; the two side surfaces of the outer ring are provided with baffle plates; the outer ring is provided with an oil groove; the oil groove is provided with two oil ways which are communicated with the inner spherical surface of the inner hole of the outer ring.
2. A high-speed ball-type radial spherical plain bearing as claimed in claim 1, wherein: and mounting grooves for mounting the baffle plates are formed in two sides of the outer ring.
3. A high-speed ball-type radial spherical plain bearing as claimed in claim 2, wherein: two symmetrical convex cylinders are arranged on two sides of the joint ball.
4. A high-speed ball-type radial spherical plain bearing as claimed in claim 3, wherein: the track groove is an arc track groove.
5. A high-speed ball-type radial spherical plain bearing as claimed in claim 4, wherein: the track groove or the double-arc track groove formed by two symmetrical arcs.
6. A high-speed ball-type radial spherical plain bearing as claimed in claim 4, wherein: two or more rows of steel balls are distributed between the joint ball and the outer ring and serve as rolling bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410018581.5A CN117739008A (en) | 2024-01-04 | 2024-01-04 | Ball type high-speed radial spherical plain bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410018581.5A CN117739008A (en) | 2024-01-04 | 2024-01-04 | Ball type high-speed radial spherical plain bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117739008A true CN117739008A (en) | 2024-03-22 |
Family
ID=90261009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410018581.5A Pending CN117739008A (en) | 2024-01-04 | 2024-01-04 | Ball type high-speed radial spherical plain bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117739008A (en) |
-
2024
- 2024-01-04 CN CN202410018581.5A patent/CN117739008A/en active Pending
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