CN210371633U

CN210371633U - High-precision angular contact ball bearing

Info

Publication number: CN210371633U
Application number: CN201921145021.7U
Authority: CN
Inventors: 黄斌; 何钟萍; 朱文
Original assignee: Xinchang Xinglun Bearing Co Ltd
Current assignee: Xinchang Xinglun Bearing Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-21
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a high-precision angular contact ball bearing, including outer lane, inner circle, holder and ball, be equipped with the inner ring groove on the inner circumference of outer lane, evenly distributed has first commentaries on classics roller in the inner ring groove, is equipped with the outer ring groove on the outer circumference of inner circle, evenly distributed has the second commentaries on classics roller in the outer ring groove, and first commentaries on classics roller, second commentaries on classics roller and ball cooperate, and the both sides of inner circle all are equipped with the restriction lid, and the restriction lid seals the space between outer lane and the inner circle; the utility model discloses novel structure, the operation is smooth and easy reliable again, stand wear and tear, long service life.

Description

High-precision angular contact ball bearing

Technical Field

The utility model belongs to the technical field of mechanical bearing, especially, relate to a high-accuracy angular contact ball bearing.

Background

In the machine tool spindle bearing, the angular contact ball bearing is widely applied due to the advantages of high rotation precision, good high-speed performance and the like.

The angular contact ball bearing in the prior art has the following defects in the use process: 1. the balls are in surface contact with the outer ring and the inner ring, so that the contact area is large, the abrasion speed is high, and the service life is short; 2. lubricating oil is injected into gaps among the retainer, the outer ring and the inner ring from the end face of the bearing at a certain angle by adopting lubricating modes such as oil mist, oil gas, oil injection and the like so as to lubricate, but the consumption of the lubricating oil is high, the utilization rate is low, and good lubricating effect cannot be ensured; 3. some service environments are severe, the ratio of chips to dust is high, and the impurities fall into the bearing, so that the abrasion of the ball bearing is accelerated, and the normal operation of the bearing is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solves the above-mentioned technical problem that exists among the prior art, provides a high-accuracy angular contact ball bearing, novel structure, and the operation is smooth and easy reliable again, stand wear and tear, long service life.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a high-accuracy angular contact ball bearing, includes outer lane, inner circle, holder and ball, its characterized in that: an inner ring groove is formed in the inner circumference of the outer ring, first rotating rollers are uniformly distributed in the inner ring groove, an outer ring groove is formed in the outer circumference of the inner ring, second rotating rollers are uniformly distributed in the outer ring groove, the first rotating rollers and the second rotating rollers are matched with the balls, limiting covers are arranged on two sides of the inner ring, and the limiting covers close the space between the outer ring and the inner ring; the bearing has the advantages of novel structure, smooth and reliable operation, wear resistance and long service life.

Furthermore, an oil filling hole is formed in the limiting cover, an annular oil storage groove is formed in the limiting cover, the oil filling hole is communicated with the annular oil storage groove, a first oil filling pipe is arranged on the bottom surface of the limiting cover and is communicated with the annular oil storage groove, a first flow guide channel is formed in the side surface of the outer ring and is communicated with the inner annular groove, the first oil filling pipe extends into the first flow guide channel, lubricating oil is filled into the oil filling hole and is accumulated in the annular oil storage groove, the lubricating oil is fed into the first flow guide channel through the first oil filling pipe and then enters the inner annular groove, so that lubricating oil is adhered to each first rotating roller, the first rotating rollers are driven by the balls to rotate, the first rotating rollers are contacted with the first rotating rollers, the surfaces of the balls are also adhered with the lubricating oil, the balls are lubricated, the balls are not prone to wear; in the installation of restriction lid, first oiling pipe aims at first water conservancy diversion passageway, and the location is convenient, has reduced the installation degree of difficulty.

Furthermore, a second flow guide channel is arranged on the side surface of the inner ring and is communicated with the outer annular groove, a second oil injection pipe is arranged on the bottom surface of the limiting cover and is communicated with the annular oil storage groove, the second oil injection pipe extends into the second flow guide channel, lubricating oil in the annular oil storage groove is sent into the second flow guide channel through the second oil injection pipe and then enters the outer annular groove, so that lubricating oil is adhered to each second rotating roller, the second rotating roller is driven by the balls to rotate, the second rotating roller is in contact with the balls, the surfaces of the balls are also adhered with the lubricating oil, the balls are lubricated, the balls are not easy to wear, and the service life is prolonged; in the installation process of the limiting cover, the first oil filling pipe is aligned to the first flow guide channel, the second oil filling pipe is aligned to the second flow guide channel, double positioning is achieved, and installation is simpler.

Furthermore, threaded connection has the chock plug on the oil filler point, and the dismouting is convenient, seals the oil filler point through the chock plug, can prevent impurity such as dust from getting into in the oil filler point, prevents that the lubricating oil and the impurity of pouring into mixed together and reduced lubricated effect, plays dustproof effect.

Furthermore, wear to be equipped with the threaded rod between inner circle and the restriction lid, the both ends of threaded rod are connected with fastening nut, and the restriction lid dismouting is simple, and the change of being convenient for compresses tightly the surface of restriction lid through fastening nut for including the restriction lid is fixed circle, and the fastness is strong, and threaded rod restriction lid takes place to rotate for the inner circle, has improved the reliability of restriction lid installation.

Furthermore, the retainer is provided with the protection ring, and the balls are arranged in the protection ring, so that the problem that the material waste is caused because the retainer cannot be replaced and the retainer cannot be directly scrapped due to large abrasion or damage between the balls and the retainer when the bearing is used for a long time is avoided, and the service life is prolonged.

Further, the outside of outer lane is equipped with the anticollision skin, and the outer bearing capacity that has improved the outer lane that sets up of anticollision, and when the bearing operation, the outer lane can cushion some radial load, more is favorable to increasing the stability of bearing.

The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:

in the bearing operation process, the ball drives the first roller and the second roller to rotate, the ball and the first roller and the second roller are in point contact, the contact area is reduced, the friction resistance is reduced, the abrasion degree of the ball is reduced, the first roller and the second roller rotate simultaneously to give the ball transmission force, the ball rotates more smoothly, and the transmission efficiency is improved.

The limiting cover seals the space between the outer ring and the inner ring, so that dust is not easy to fall into the space between the outer ring and the inner ring, a dustproof effect is achieved, the outer ring is effectively locked by the limiting cover, and the condition that the outer ring and the inner ring fall off when the bearing is worn inside is avoided.

To pouring into lubricating oil in the oil filler hole, lubricating oil gathers in annular oil storage tank, lubricating oil sends into first water conservancy diversion passageway through first notes oil pipe in, reentrant inner ring inslot, lubricating oil sends into in the second water conservancy diversion passageway through the second notes oil pipe simultaneously, reentrant outer inslot, make each first commentaries on classics roller, all be stained with lubricating oil on the second commentaries on classics roller, the ball drives first commentaries on classics roller, the second changes the roller and rotates, make the ball surface also be stained with lubricating oil after the contact, thereby lubricated the ball, double lubrication, it is lubricated effectual, make the ball be difficult for wearing and tearing, service life is prolonged. The lubricating oil is kept in a closed space formed by enclosing the limiting cover, the outer ring and the inner ring, the lubricating oil is not easy to leak, the utilization rate of the lubricating oil is improved, hydrodynamic lubrication is formed along with the operation of the bearing, and a continuous lubricating effect is achieved.

The utility model discloses novel structure, the operation is smooth and easy reliable again, stand wear and tear, long service life.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a high-precision angular contact ball bearing according to the present invention;

FIG. 2 is a schematic view of the external structure of the middle limiting cover of the present invention;

FIG. 3 is a schematic view of the internal structure of the limiting cover of the present invention;

FIG. 4 is a schematic structural view of the inner ring of the present invention;

FIG. 5 is a schematic structural view of the middle outer ring of the present invention;

fig. 6 is a schematic structural view of the connection between the retainer and the ball of the present invention.

In the figure: 1-an outer ring; 2-inner ring; 3-a cage; 4-a ball bearing; 5-a guard circle; 6-inner ring groove; 7-a first rotating roller; 8-outer ring grooves; 9-a second rotating roller; 10-a restraining cap; 11-a lateral through hole; 12-a limiting hole; 13-a threaded rod; 14-a fastening nut; 15-oil filler hole; 16-an annular oil reservoir; 17-a plug head; 18-a first filler pipe; 19-a first flow guide channel; 20-a second flow guide channel; 21-second filler pipe.

Detailed Description

As shown in fig. 1 to 6, for the utility model relates to a high-accuracy angular contact ball bearing, including outer lane 1, inner circle 2, holder 3 and ball 4, holder 3 is located between outer lane 1 and inner circle 2, is equipped with guard circle 5 on the holder 3, and ball 4 is located in guard circle 5, avoids wearing and tearing great or damage can not change holder 3 and directly scrap and cause the material waste between ball 4 and the holder 3 when using for a long time, has prolonged life. Be equipped with interior annular groove 6 on the interior circumference of outer lane 1, evenly distributed has first commentaries on classics roller 7 in the interior annular groove 6, first commentaries on classics roller 7 is rotatable, be equipped with outer annular groove 8 on the outer circumference of inner circle 2, evenly distributed has the second in the outer annular groove 8 changes roller 9, second changes roller 9 rotatable, first commentaries on classics roller 7, second changes roller 9 and cooperatees with ball 4, at bearing operation in-process, ball 4 drives first commentaries on classics roller 7, second changes roller 9 and rotates, ball 4 and first commentaries on classics roller 7, be the point contact mode between the second commentaries on classics roller 9, the contact area has been reduced, frictional resistance reduces, the degree of wear of ball 4 has been slowed down, first commentaries on classics roller 7, second commentaries on classics roller 9 rotates simultaneously and gives ball 4 transmission power, make ball 4.

Both sides of inner circle 2 all are equipped with restriction lid 10, be equipped with horizontal through-hole 11 on the inner circle 2, be equipped with spacing hole 12 on the restriction lid 10, wear to be equipped with threaded rod 13 between spacing hole 12 and the horizontal through-hole 11, the both ends of threaded rod 13 are connected with fastening nut 14, restriction lid 10 dismouting is simple, be convenient for change, compress tightly the surface of restriction lid 10 through fastening nut 14, make restriction lid 10 fix on inner circle 2, the fastness is strong, threaded rod 13 restriction lid 10 takes place to rotate for inner circle 2, the reliability of restriction lid 10 installation has been improved. The restriction lid 10 seals the space between outer lane 1 and the inner circle 2 for the dust is difficult to fall into the space between outer lane 1 and the inner circle 2, thereby influences ball 4, first commentaries on classics roller 7 and the rotation of second commentaries on classics roller 9, has played dustproof effect, and restriction lid 10 has pinned outer lane 1 effectively simultaneously, and the condition that outer lane 1 and inner circle 2 drop takes place when having avoided the inside wearing and tearing of bearing. The outside of outer lane 1 is equipped with the anticollision skin, and the outer bearing capacity that has improved outer lane 1 that sets up of anticollision, and when the bearing operation, outer lane 1 can cushion some radial load, more is favorable to increasing the stability of bearing.

Be equipped with oil filler point 15 on the restriction lid 10, be equipped with annular oil storage tank 16 in the restriction lid 10, oil filler point 15 communicates with each other with annular oil storage tank 16, and threaded connection has chock plug 17 on the oil filler point 15, and the dismouting is convenient, seals oil filler point 15 through chock plug 17, can prevent impurity such as dust from getting into in oil filler point 15, prevents that the lubricating oil of pouring into and impurity from mixing together and having reduced lubricated effect, plays dustproof effect. A first oil filling pipe 18 is arranged on the bottom surface of the limiting cover 10, the first oil filling pipe 18 is communicated with an annular oil storage groove 16, a first flow guide channel 19 is arranged on the side surface of the outer ring 1, the first flow guide channel 19 is communicated with the inner annular groove 6, the first oil filling pipe 18 extends into the first flow guide channel 19, lubricating oil is filled into the oil filling hole 15, the lubricating oil is accumulated in the annular oil storage groove 16, the lubricating oil is sent into the first flow guide channel 19 through the first oil filling pipe 18 and then enters the inner annular groove 6, so that the lubricating oil is adhered to each first rotating roller 7, the first rotating rollers 4 are driven by the balls 4 to rotate, the first rotating rollers are in contact with the lubricating oil, the surfaces of the balls 4 are also adhered with the lubricating oil, the balls 4 are lubricated, the balls 4 are not easy; during the installation process of the limiting cover 10, the first oil filling pipe 18 is aligned to the first flow guide channel 19, the positioning is convenient, and the installation difficulty is reduced. A second flow guide channel 20 is arranged on the side surface of the inner ring 2, the second flow guide channel 20 is communicated with the outer annular groove 8, a second oil injection pipe 21 is arranged on the bottom surface of the limiting cover 10, the second oil injection pipe 21 is communicated with the annular oil storage groove 16, the second oil injection pipe 21 extends into the second flow guide channel 20, lubricating oil in the annular oil storage groove 16 is sent into the second flow guide channel 20 through the second oil injection pipe 21 and then enters the outer annular groove 8, so that lubricating oil is adhered to each second rotating roller 9, the second rotating rollers are driven by the balls 4 to rotate, the balls 4 are contacted with each other, the surfaces of the balls 4 are also adhered with the lubricating oil, the balls 4 are lubricated, the balls 4 are not easy to wear, and the service life is prolonged; during the installation of the restraining cap 10, the first filler pipe 18 is aligned with the first flow guide passage 19, and the second filler pipe 21 is aligned with the second flow guide passage 20, so that the installation is simpler. The annular oil storage groove 16 can store lubricating oil, so that sufficient lubricating oil is provided for the outer annular groove 8 and the inner annular groove 6, and the lubricating effect is improved.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims

1. The utility model provides a high-accuracy angular contact ball bearing, includes outer lane, inner circle, holder and ball, its characterized in that: the inner circumference of the outer ring is provided with an inner ring groove, first rotating rollers are uniformly distributed in the inner ring groove, an outer ring groove is arranged on the outer circumference of the inner ring, second rotating rollers are uniformly distributed in the outer ring groove, the first rotating rollers and the second rotating rollers are matched with the balls, limiting covers are arranged on two sides of the inner ring, and the limiting covers seal the space between the outer ring and the inner ring.

2. A high-precision angular contact ball bearing according to claim 1, wherein: the restriction is covered and is equipped with the oil filler point, be equipped with annular oil storage tank in the restriction lid, the oil filler point with annular oil storage tank communicates with each other, be equipped with first oiling pipe on the bottom surface of restriction lid, first oiling pipe with annular oil storage tank communicates with each other, the side of outer lane is equipped with first water conservancy diversion passageway, first water conservancy diversion passageway with the interior annular groove communicates with each other, first oiling pipe stretches into in the first water conservancy diversion passageway.

3. A high-precision angular contact ball bearing according to claim 2, wherein: and a second flow guide channel is arranged on the side surface of the inner ring and is communicated with the outer annular groove, a second oil filling pipe is arranged on the bottom surface of the limiting cover and is communicated with the annular oil storage groove, and the second oil filling pipe extends into the second flow guide channel.

4. A high-precision angular contact ball bearing according to claim 2, wherein: and the oil filling hole is in threaded connection with a plug head.

5. A high-precision angular contact ball bearing according to claim 1, wherein: a threaded rod penetrates between the inner ring and the limiting cover, and two ends of the threaded rod are connected with fastening nuts.

6. A high-precision angular contact ball bearing according to claim 1, wherein: the retainer is provided with a protection ring, and the ball is arranged in the protection ring.

7. A high-precision angular contact ball bearing according to claim 1, wherein: and an anti-collision outer layer is arranged on the outer side of the outer ring.