CN117450160A - High-speed rod end joint bearing with internal thread roller - Google Patents
High-speed rod end joint bearing with internal thread roller Download PDFInfo
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- CN117450160A CN117450160A CN202311705953.3A CN202311705953A CN117450160A CN 117450160 A CN117450160 A CN 117450160A CN 202311705953 A CN202311705953 A CN 202311705953A CN 117450160 A CN117450160 A CN 117450160A
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- rod end
- end body
- joint
- rollers
- bearing
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- 239000003921 oil Substances 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 19
- 239000010959 steel Substances 0.000 abstract description 19
- 238000005516 engineering process Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 29
- 238000001125 extrusion Methods 0.000 description 20
- 238000005461 lubrication Methods 0.000 description 18
- 238000012545 processing Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect 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
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/1045—Details of supply of the liquid to the bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an internal thread roller high-speed rod end joint bearing, which comprises a rod end body, joint balls, rollers, a retainer and a baffle plate, wherein the joint balls are assembled on the rod end body, the rollers are distributed between the outer sides of the joint balls and the inner side spherical surfaces of the rod end body, the rollers are separated by the retainer, and the rollers are uniformly distributed in outer side raceway grooves of the whole joint balls; one side of the roller is contacted with the spherical surface of the inner side of the rod end body, and the other side of the roller is contacted with the raceway groove of the joint ball; the two side surfaces of the rod end body are provided with the baffle plates, and the self-lubricating rod end joint bearing has the advantages that the inner spherical surfaces of the roller, the joint ball and the rod end body are all precisely machined and are quenching parts, has good rigidity and wear resistance, and solves the problems of insufficient rigidity and poor precision of the original self-lubricating rod end joint bearing self-lubricating material. The friction structure of steel to steel is very wear-resisting, and long service life is because it is the technology of precision finishing, and the precision is also higher than self-lubricating rod end joint bearing.
Description
Technical Field
The invention relates to the field of bearings, in particular to a high-speed rod end joint bearing with an internal thread roller.
Background
The structure of the conventional extrusion type self-lubricating rod end joint bearing is shown in fig. 6: comprises a rod end body and a built-in extrusion type self-lubricating radial spherical plain bearing. The assembly mode is that firstly, a self-lubricating material (figure 2) is filled into a groove (figure 1) of an extrusion type self-lubricating radial spherical plain bearing outer ring, 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 is extruded by external force, the extrusion type self-lubricating radial spherical plain bearing outer ring is deformed to be attached to a spherical 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 the appointed requirement of built-in centripetal by machining (figure 5), then the completed extrusion type self-lubricating radial spherical plain bearing (figure 5) is placed into an ear hole of a rod end body, the built-in extrusion type self-lubricating radial spherical plain bearing is fixed on the rod end body in a locking mode (figure 6), and finally the aim of sliding and swinging is achieved by adjusting a clearance between the joint ball and the self-lubricating.
The structure of a conventional squeeze oil lubricated rod end joint bearing is shown in fig. 11: comprises a rod end body, a built-in extrusion type oil lubrication radial spherical plain bearing and an oil nozzle. The assembly method comprises the steps of firstly placing a joint ball (figure 8) into an inner hole of an outer ring of an oil lubrication radial spherical joint bearing (figure 7), extruding the outer ring of the oil lubrication radial spherical joint bearing (figure 7) through external force to deform the outer ring of the oil lubrication radial spherical joint bearing so as to achieve the aim of jointing an arc surface of the joint ball (figure 9), machining the outer diameter and the end surface of the outer ring of the extrusion type oil lubrication radial spherical joint bearing to the appointed requirement of built-in centripetal (figure 10), then placing the machined built-in extrusion type oil lubrication radial spherical joint bearing (figure 10) into an earhole of a rod end body, fixing the built-in extrusion type oil lubrication radial spherical joint bearing on the rod end body in a locking way (figure 11), finally adjusting the gap between the joint ball and self lubrication, and injecting lubricating oil through an oil nozzle when the joint ball is used, wherein the lubricating oil reaches the spherical surface of the joint ball through an oil way so as to achieve the purposes of sliding and swinging.
The structure of the existing single-slit self-lubricating rod end core joint bearing is shown in a figure (17): comprises a rod end body and a built-in single-slit self-lubricating radial spherical plain bearing. The assembly mode is that firstly, a single-slit self-lubricating radial spherical bearing outer ring (figure 12) is ground to a specified size, a slit is formed in the axial direction of the single-slit self-lubricating radial spherical bearing outer ring (figure 12), glue is coated on the inner spherical surface of the single-slit self-lubricating radial spherical bearing outer ring (figure 12), then a self-lubricating material (figure 13) is adhered to the inner spherical surface of the single-slit self-lubricating radial spherical bearing outer ring (figure 13), a joint ball (figure 14) is placed on the upper surface of the single-slit self-lubricating radial spherical bearing outer ring (figure 15), the single-slit self-lubricating radial spherical bearing outer ring is pressed into the single-slit self-lubricating radial spherical bearing outer ring through external force, in the pressing process, the slit is elastically deformed when the single-slit self-lubricating radial spherical bearing outer ring is pressed into the single-slit self-lubricating radial spherical bearing outer ring, the slit is spread, after the joint ball is completely pressed into the single-slit self-lubricating radial spherical bearing outer ring, the slit is retracted due to the elastic action, and finally, the single-slit self-lubricating radial spherical bearing (figure 16) is fixed on the radial bearing body in a locking way (figure 17).
The structure of the conventional single slit type oil lubrication rod end center joint bearing is shown in fig. 22: comprises a rod end body, a built-in single-slit oil lubrication radial joint bearing and an oil nozzle. The assembly mode is that firstly, a single-slit oil lubrication radial spherical plain bearing outer ring (figure 18) is ground to a specified size, a slit is axially formed in the single-slit oil lubrication radial spherical plain bearing outer ring (figure 18), then a joint ball (figure 19) is placed on the single-slit self-lubrication radial spherical plain bearing outer ring (figure 20), in the pressing-in process, the slit can be elastically deformed when the outer ring is pressed under stress due to the fact that the outer ring is provided with the axial slit, the slit is spread, after the joint ball is completely pressed into the outer ring, the slit can retract due to the elastic effect, only a slit of about 0.02-0.05 mm is left after the joint ball is finished, finally, a lock opening mode (figure 22) is adopted to fix the built-in Shan Kaifeng oil lubrication radial spherical plain bearing (figure 21) on a rod end body, and in the use process, lubricating oil is injected through an oil nozzle to reach the spherical surface of the joint ball, so that the effects of lubrication and swing are achieved.
The extrusion type self-lubricating rod end joint bearing (figure 6) and the extrusion type oil lubricating rod end joint bearing (figure 11) are molded, then the sliding and swinging purposes are achieved by adjusting the sliding gap between the joint ball and the self-lubricating or between the joint ball 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 joint ball axially moves 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 rod end joint bearing (figure 6) and single slit type self-lubricating rod end joint bearing (figure 17) are filled with a layer of self-lubricating material between the joint ball and the outer ring, the self-lubricating material is a flexible piece, so the rigidity of the product is very poor, and the use effect can be very poor in the occasions such as impact, vibration or dust.
The four rod end joint bearings (fig. 6, 11, 17 and 22) 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 bearing is easy to burn out due to the fact that the friction coefficient is large and the friction surface is large in a working state of high-speed rotation, even the phenomenon of clamping is caused, the service life of the bearing is influenced, and the use requirement of high-speed operation cannot be met.
The above four rod end joint bearings (fig. 6, 11, 17 and 22) are all fixed to the rod end body by adopting the locking port assembly mode, and are fixed in such a mode, so that the built-in radial joint bearing is easy to fall off when bearing a larger axial load (fig. 23) in the use process, thereby causing mechanical faults and even accidents, including casualties, and failing to meet the use requirement of the higher axial load.
The four rod end joint bearings (fig. 6, 11, 17 and 22) 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.
The structure of the conventional steel ball high-speed rod end joint bearing is shown in fig. 24: comprises a baffle plate, a steel ball, a joint ball, a rod end body and a nozzle tip. The assembly mode is that firstly, the joint ball is put into the earhole of the rod end body, the inner side of the earhole is spherical, then the steel ball is put into the ball channel groove of the joint ball, when in use, the steel ball rolls in the inner spherical surface of the rod end body and the groove of the joint ball, finally, the two sides of the earhole of the rod end body are locked with the baffle plates to prevent the steel ball from falling off in the rotating or swinging process, finally, the oil nozzle is screwed, lubricating oil is injected through the oil nozzle in the use process, and the positions of the steel ball are reached through the oil channel, thereby achieving the effects of lubrication, rolling and swinging. Although rolling friction is adopted, the steel ball is in point contact with the inner spherical surface of the lug hole of the rod end body, so that the bearing capacity is generally low, the rigidity is not very high, the impact and vibration resistance is not very high, and the greatest advantage is that the rotating speed is very high.
In summary, the existing rod end joint bearing has the following defects:
(1) the sliding gap is inconvenient to adjust and the consistency after adjustment is poor.
(2) Because self-lubricating materials are used and are flexible parts, the rigidity of the product is poor, and the use effect is poor in the occasions of impact, vibration, dust or the like.
(3) The rotating speed is low, the swing frequency is low, the friction resistance is large, the bearing is damaged after easy overheating, and the use requirement of high-speed operation cannot be met.
(4) Because of the design and assembly combined structure, the product is not easy to bear axial force, otherwise, the built-in radial joint bearing is easy to fall out.
(5) Because of the sliding friction of large-area contact, the starting moment is large, the corresponding motor power is also processed, the use cost is increased, and some precise control occasions are not applicable.
(6) The existing ball high-speed rod end joint bearing has the advantages of good bearing and rigidity, not very resistant to large impact and vibration, high rotating speed and relatively large friction sound because the steel balls are directly arranged and combined with the steel balls.
Disclosure of Invention
The invention aims at solving the problems and provides an internal thread roller high-speed rod end joint bearing, which has the advantages that:
1. because of the rolling friction structure, the friction coefficient is very low, the heat dissipation is fast, the high use rotating speed can be achieved, and the actual measurement of the product at present reaches 10000 revolutions per minute.
2. The inner spherical surfaces of the roller, the joint ball and the rod end body are all precisely machined and are quenching parts, so that the self-lubricating rod end joint bearing has good rigidity and wear resistance, and the problems of insufficient rigidity and poor precision of the original self-lubricating rod end joint bearing self-lubricating material are avoided. The friction structure of steel to steel is very wear-resisting, and long service life is because it is the technology of precision finishing, and the precision is also higher than self-lubricating rod end joint bearing.
3. After the roller is assembled into the joint ball and the rod end body, the roller can not fall out in a use state, and can bear radial load and axial load.
4. The rollers are separated by the retainer, friction is avoided between the rollers, noise generated by high-speed rotation is reduced, the maintainability of grease is improved, dust is reduced, and the service life is prolonged.
5. The rollers are in surface contact with the inner spherical surface of the lug hole of the rod end body, so that the contact area is large, the load of 150% can be improved, the rigidity is 2 times, and the shock and vibration resistance is improved.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the utility model provides an internal thread roller high-speed rod end joint bearing, includes rod end body, joint ball, roller, keeps on ware, separation blade and glib talker group constitution, but when the size specification is very little, can cancel the glib talker, only need keep the lubrication circuit can. The method is characterized in that: the inner side of the lug hole of the rod end body is spherical; the joint ball is assembled in the middle of the lug hole of the rod end body, rollers are distributed between the outer side of the joint ball and the spherical surface of the inner side of the lug hole of the rod end body, the rollers are separated by a retainer, and the rollers are uniformly distributed in the outer side raceway groove of the whole joint ball; one side of the roller is contacted with the spherical surface of the inner side of the earhole, and the other side of the roller is contacted with the raceway groove of the joint ball; the two side surfaces of the rod end body are provided with baffle plates; the head of the rod end body is provided with an oil nozzle, and oil is injected to lubricate the roller and other raceway working surfaces.
Further, the inner side of the earhole of the rod end body is spherical.
Further, baffle mounting grooves with bevel ports are formed on two sides of the lug holes.
Further, the side of the head part of the rod end body is provided with a nozzle tip hole, and the nozzle tip hole is provided with an internal thread for installing a nozzle tip.
Further, the bottom of the oil nozzle hole is provided with an oil way which is communicated with the inner spherical surface of the lug hole of the rod end body, the bottom of the threaded hole of the rod end body is penetrated with the spherical surface of the inner side of the rod end body by the oil way, and the oil way is mainly determined by the position of the oil nozzle.
Further, two symmetrical convex cylinders are arranged on two sides of the joint ball.
Further, the outer ring of the joint ball is provided with an arc-shaped raceway groove, and R values of the raceway of the inner spherical surface of the rod end body, the roller and the raceway of the joint ball are similar.
Further, the rollers are rollers with large middle and small two sides or arc rollers. Rollers or arc rollers are distributed between the joint ball and the rod end body to serve as rolling bodies.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, through changing the internal structure and the processing technology, the grinding processing technology is adopted for the upper raceway groove of the outer ring of the joint ball, the roller is subjected to the grinding processing technology and is separated into the precision size section of 1 micron, the inner side spherical surface of the lug hole of the rod end body is also ground, all grinding processing precision is high, and during assembly, the small tolerance of the inner spherical surface of the lug hole of the rod end body and the upper raceway groove of the joint ball generated by grinding processing can be regulated by rollers with different sizes, so that reasonable assembly is carried out, the play value is ensured, the rolling clearance is uniform, the rolling is smooth, the precision is very high, and the play value can be accurately controlled.
2. According to the invention, the rod end body is matched with the internal roller and the joint ball, and the inner side of the lug hole of the rod end body is in a spherical structure, so that the maximum size of the joint ball and the roller far exceeds the size of the mouth part of the lug hole of the rod end body, the joint ball and the roller cannot fall off when a large axial force is applied in the use process, the risk that the joint ball falls off from the rod end body is solved from the design structure, the use safety of a product is further improved, and the use requirement of bearing radial load and bearing axial load is also realized.
3. The roller and the inner spherical surface of the lug hole of the rod end body and the raceway groove of the joint ball adopt a rolling friction structure, the friction coefficient is low, but the rolling contact surface adopts a line contact mode, the radial load which can be born is higher than that of a common rolling body, meanwhile, compared with the traditional rod end joint bearing, the rolling speed and the swinging frequency are also improved, the starting torque is reduced, and the excellent properties of high load, high rotating speed, high swinging frequency, low starting torque and low energy consumption are realized.
4. In the use process, the rolling and swinging of the joint ball are transmitted by the rollers between the joint ball and the rod end body, the rollers are separated by the retainer, and the rollers have no friction, so that the noise generated by high-speed rotation is reduced, the maintainability of grease is improved, the generation of dust is reduced, and the service life is prolonged.
5. While the existing rod end joint bearing adopts a sliding friction movement form, the invention adopts a rolling friction movement form, 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, and the two movements can be performed simultaneously.
6. The traditional rod end joint bearing is friction between a steel ball and a self-lubricating material, has poor rigidity and is not impact-resistant, and the spherical surface, the roller and the joint ball of the rod end body of the product are precisely machined steel parts after heat treatment, and have good rigidity, impact resistance and wear resistance. And the capability of resisting pollutants such as dust, sundries and the like is better than that of the traditional self-lubricating rod end joint bearing.
7. The roller is connected with the outer ring and the joint ball by wires, and the bearing is 2 to 5 times larger than the steel ball type high-speed rod end joint bearing according to the length of the contact length, so that the high-speed rod end joint bearing is very impact and vibration resistant.
8. The rollers are fixed by a retainer in a spaced manner, and the running noise is much lower than that of a steel ball type rod end joint bearing.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
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 illustration of the structure and assembly of a prior art squeeze-type self-lubricating rod end joint bearing;
FIG. 7 is a schematic view of an oil lubricated radial spherical plain bearing outer race;
FIG. 8 is a schematic view of an oil lubricated spherical plain radial bearing knuckle;
FIG. 9 is a schematic diagram of an oil lubricated radial spherical plain bearing prior to machining;
FIG. 10 is a schematic illustration of an oil lubricated radial spherical plain bearing after machining;
FIG. 11 is a schematic illustration of the structure and assembly of a prior art squeeze oil rod end joint bearing;
FIG. 12 is a schematic view of a single slit self-lubricating radial spherical plain bearing outer race;
FIG. 13 is a schematic representation of a self-lubricating fabric;
FIG. 14 is a schematic view of a single slit self-lubricating spherical plain radial bearing knuckle;
FIG. 15 is a schematic diagram of an assembly of a single slit self-lubricating radial spherical plain bearing;
FIG. 16 is a schematic view of a single slit self-lubricating radial spherical plain bearing;
FIG. 17 is a schematic illustration of the structure and assembly of a prior art single slit self-lubricating rod end joint bearing;
FIG. 18 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing outer race;
FIG. 19 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing knuckle;
FIG. 20 is a schematic diagram of an assembly of a prior art single slit oil lubricated radial spherical plain bearing;
FIG. 21 is a schematic view of a prior art single slit oil lubricated radial spherical plain bearing;
FIG. 22 is a schematic view of a prior art single split oil lubrication rod end knuckle bearing construction and assembly;
FIG. 23 is a schematic axial force-bearing illustration of a prior art rod end joint bearing;
FIG. 24 is a schematic view of a conventional roller high-speed rod end joint bearing;
FIG. 25 is a schematic view of the structure of the present invention;
FIG. 26 is a schematic side cross-sectional view of the present invention;
FIG. 27 is a schematic view of the invention in partial cross-section at 45 degrees.
Reference numerals illustrate: 1. a rod end body; 11. ear holes; 12. a baffle mounting groove; 13. an external thread; 2. a joint ball; 21. a raceway groove; 22. a cylinder; 3. a roller; 4. a retainer; 5. a baffle; 6. a nipple; 61. a nipple hole; 62. and an oil path.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this invention.
As shown in fig. 25 to 27, this embodiment discloses an internal thread roller high-speed rod end joint bearing, including rod end body, joint ball, roller, retainer, separation blade and glib talker are constituteed, its characterized in that: the inner side of the lug hole of the rod end body is spherical; the joint ball is assembled in the middle of the lug hole of the rod end body, rollers are distributed between the outer side of the joint ball and the inner side spherical surface of the rod end body, the rollers are separated by a retainer, and the rollers are uniformly distributed in the outer side raceway groove of the whole joint ball; one side of the roller is contacted with the spherical surface of the inner side of the earhole, and the other side of the roller is contacted with the raceway groove of the joint ball; the two side surfaces of the rod end body are provided with baffle plates; the head part of the rod end body is provided with an oil nozzle; after oiling, the oil was allowed to lubricate the rollers. By changing the internal structure and the processing technology, the precision of the product is improved, the rolling is smoother, the swinging is more stable, and the use effect of the product is improved; the axial load bearing capacity of the product is improved, and the use safety of the product is improved; the sliding friction is changed into rolling friction, so that the starting torque is reduced, the use cost is reduced, and the energy consumption 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 large, the rolling resistance is low, the conditions of high-load and high-rotation-speed operation are met, and the requirements of high load and high-speed rotation are met.
1. According to the invention, through changing the internal structure and the processing technology, the grinding processing technology is adopted for the upper raceway groove of the outer ring of the joint ball, the roller is subjected to the grinding processing technology and is separated into the precision size section of 1 micron, the inner side spherical surface of the lug hole of the rod end body is also ground, all grinding processing precision is high, and during assembly, the small tolerance of the inner spherical surface of the lug hole of the rod end body and the upper raceway groove of the joint ball generated by grinding processing can be regulated by rollers with different sizes, so that reasonable assembly is carried out, the play value is ensured, the rolling clearance is uniform, the rolling is smooth, the swinging is stable, the precision is very high, and the play value can be accurately controlled. .
2. The invention adopts the matching installation of the rod end body, the internal roller and the joint ball, because the inner side of the ear hole of the rod end body is in a spherical structure, the maximum size of the joint ball and the roller far exceeds the size of the mouth part of the ear hole of the rod end body, the joint ball and the roller can not fall off when the joint ball is subjected to larger axial force in the use process, the risk that the joint ball falls off from the rod end body is structurally solved, the use safety of products is further improved, and the use requirement of bearing high axial load is also realized.
3. The roller and the inner spherical surface of the lug hole of the rod end body and the raceway groove of the joint ball adopt a rolling friction structure, the friction coefficient is low, but the rolling contact surface adopts a surface contact mode, the radial load which can be born is high, the rotating speed is improved, the starting torque is reduced, and the high-load high-rotating-speed low-energy-consumption high-speed joint ball has the advantages of high-speed rotation and low energy consumption.
4. In the use process, the rolling and swinging of the joint ball are transmitted by the rollers between the joint ball and the rod end body, the rollers are separated by the retainer, and the rollers have no friction, so that the noise generated by high-speed rotation is reduced, the maintainability of grease is improved, the generation of dust is reduced, and the service life is prolonged.
5. While the existing rod end joint bearing adopts a sliding friction movement form, the invention adopts a rolling friction movement form, 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, and the two movements can be performed simultaneously.
6. The traditional rod end joint bearing is friction between a steel ball and a self-lubricating material, has poor rigidity and is not impact-resistant, and the spherical surface, the roller and the joint ball of the rod end body of the product are precisely machined steel parts after heat treatment, and have good rigidity, impact resistance and wear resistance. And the capability of resisting pollutants such as dust, sundries and the like is better than that of the traditional self-lubricating rod end joint bearing.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the appended claims.
Claims (8)
1. The utility model provides an internal thread roller high-speed rod end joint bearing, includes that rod end body, joint ball, roller, keeper and separation blade constitute, its characterized in that: the joint ball is assembled on the rod end body, rollers are distributed between the outer side of the joint ball and the inner side spherical surface of the rod end body, the rollers are separated by a retainer, and the rollers are uniformly distributed in the outer side raceway grooves of the whole joint ball; one side of the roller is contacted with the spherical surface of the inner side of the rod end body, and the other side of the roller is contacted with the raceway groove of the joint ball; the baffle plates are arranged on the two side surfaces of the rod end body.
2. An internally threaded roller high speed rod end joint bearing as defined in claim 1, wherein: the rod end body is provided with an ear hole, and the inner side of the ear hole is spherical.
3. An internally threaded roller high speed rod end joint bearing as defined in claim 2, wherein: and mounting grooves which are arranged on the rod end body and used for mounting the retaining pieces are formed in two sides of the lug holes.
4. An internally threaded roller high speed rod end joint bearing as defined in claim 3, wherein: the oil nozzle is arranged in the oil nozzle hole, and the oil nozzle hole is provided with the oil nozzle through threads and is used for filling lubricating oil in the use process.
5. An internally threaded roller high speed rod end joint bearing as defined in claim 4, wherein: the bottom of the oil nozzle hole is provided with an oil way which is communicated with the inner spherical surface of the earhole, and the bottom of the threaded hole of the rod end body is penetrated with the spherical surface of the inner side of the rod end body by the oil way.
6. An internally threaded roller high speed rod end joint bearing according to any one of claims 1-5, wherein: two symmetrical convex cylinders are arranged on two sides of the joint ball.
7. An internally threaded roller high-speed rod end joint bearing as defined in claim 6, wherein: the raceway grooves are arc raceway grooves, and R values of the raceway of the spherical surface in the rod end body, the roller and the raceway of the joint ball are similar.
8. An internally threaded roller high speed rod end joint bearing as defined in claim 1, wherein: the rollers are rollers with large middle and small two sides or arc rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311705953.3A CN117450160A (en) | 2023-12-12 | 2023-12-12 | High-speed rod end joint bearing with internal thread roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311705953.3A CN117450160A (en) | 2023-12-12 | 2023-12-12 | High-speed rod end joint bearing with internal thread roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117450160A true CN117450160A (en) | 2024-01-26 |
Family
ID=89583905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311705953.3A Pending CN117450160A (en) | 2023-12-12 | 2023-12-12 | High-speed rod end joint bearing with internal thread roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117450160A (en) |
-
2023
- 2023-12-12 CN CN202311705953.3A patent/CN117450160A/en active Pending
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