CN108799330B

CN108799330B - Linear bearing

Info

Publication number: CN108799330B
Application number: CN201810941572.8A
Authority: CN
Inventors: 周林风
Original assignee: Lishui Hengli Bearing Co ltd
Current assignee: Lishui Hengli Bearing Co ltd
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2024-01-19
Anticipated expiration: 2038-08-17
Also published as: CN108799330A

Abstract

The invention discloses a linear bearing, which comprises a bearing sleeve, a fixed groove, a fixed end, a retainer, a U-shaped groove, a ball inlet channel, an oil supply assembly, a steel ball, a connecting block, first oil absorbing cotton, an oil conveying groove, second oil absorbing cotton, a first connecting groove, a first spring, a second connecting groove, a second spring, a limiting block and an oil conveying hole, wherein the retainer is arranged in the bearing sleeve, the U-shaped groove is formed in the retainer, the steel ball is arranged in the U-shaped groove, the fixed end is connected to both ends of the bearing sleeve, the ball inlet channel is formed in the joint of one side of the fixed end and the U-shaped groove, the oil supply assembly is arranged in the ball inlet channel, one end of the oil supply assembly is provided with the connecting block, and one side of the connecting block is fixedly connected with the first oil absorbing cotton through a bolt.

Description

Linear bearing

Technical Field

The invention relates to the technical field of bearings, in particular to a linear bearing.

Background

The linear bearing is a linear motion system and is used for matching a linear stroke with a cylindrical shaft. The bearing ball is in point contact with the bearing sleeve, and the steel ball rolls with minimum friction resistance, so that the linear bearing has small friction, is stable, does not change along with the speed of the bearing, and can obtain stable linear motion with high sensitivity and high precision. The linear bearing has the limitations of consumption, and mainly has poor impact load capacity and poor bearing capacity, and secondly, the linear bearing has larger vibration and noise during high-speed movement. Linear bearings are widely used in sliding parts of industrial machines such as precision machine tools, textile machines, food packaging machines, and printing machines.

But the one end of the linear bearing in the present market does not set up the goal passageway, can not make things convenient for automation equipment production product, and the cost of labor is relatively higher, and traditional linear bearing is in the in-process of using simultaneously, owing to do not have the function of self-lubricating, can produce the noise for a long time use, and sliding contact face can receive the damage, and steel ball life can not get the guarantee. Therefore, it is necessary to design a linear bearing.

Disclosure of Invention

The present invention is directed to a linear bearing, which solves the above-mentioned problems.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a linear bearing, including bearing housing, fixed slot, fixed end, holder, U type groove, ball inlet channel, oil feeding unit, steel ball, connecting block, first oil absorption cotton, oil feeding unit, second oil absorption cotton, first connecting groove, first spring, second connecting groove, baffle, spout, slider, second spring, recess, stopper and oil delivery hole, the internally mounted of bearing housing has the holder, the inside of holder has seted up U type groove, the inside of U type groove is provided with the steel ball, the both ends of bearing housing all are connected with fixed end, the junction of one side of fixed end and U type groove has seted up ball inlet channel, the inside of ball inlet channel is provided with oil feeding unit, oil feeding unit includes connecting block, first oil absorption cotton, oil feeding unit second oil absorption cotton, first connecting groove and first spring, oil feeding unit's one end is provided with the connecting block, one side of connecting block passes through the first cotton of bolt fixedly connected with, the inside central point of bearing housing has seted up the oil feeding groove, the inside of second oil absorption cotton groove has the second oil absorption cotton, the inside of connecting groove has the second oil delivery hole, the inside of connecting block has the first side of connecting groove has the first baffle through the inside of connecting groove has the first side of connecting groove, the inside of connecting block has the first side of connecting groove has the bottom of the slider through the fixed connection groove, the inside of the baffle through the first side of the connecting groove has the fixed connection groove has the bottom of the first side of the baffle, fixing grooves are formed in the outer walls of the two ends of the bearing sleeve.

Further, a limiting block is arranged at one end, close to the oil transmission hole, of the inner wall of the sliding groove.

Further, the fixed end is fixedly connected with the bearing sleeve through bolts.

Furthermore, the bearing sleeve and the retainer are connected in a coaxial fit manner, and the concentricity of the bearing sleeve and the retainer is 1 mu m.

Further, the interval between the steel balls is 15 μm.

Further, a sealing baffle is arranged at the joint of the fixed end head and the retainer.

Compared with the prior art, the invention has the following beneficial effects: the self-lubricating device is scientific and reasonable in structure and safe and convenient to use, is provided with the oil supply assembly, the ball inlet channel and other components, when the linear bearing makes linear motion, the lubricating oil adsorbed by the first oil absorbing cotton is transferred to the surface of the steel ball in a friction mode, so that the self-lubricating function of the linear bearing can be realized, the problem that a sliding contact surface is damaged under the drying condition is solved, the service life of the steel ball is ensured, when the steel ball in the retainer is damaged due to collision of external factors of the linear bearing, the fixed end is detached by only rotating a screw at the outer side of the fixed end, the oil supply assembly is taken down, and the steel ball can be quickly replaced through the ball inlet channel, so that the product can be conveniently produced by automatic equipment, and the labor cost is reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is a schematic view of the oil supply assembly of the present invention;

FIG. 4 is a schematic view of the structure of the area A in FIG. 3 according to the present invention;

in the figure: 1. a bearing sleeve; 2. a fixing groove; 3. fixing the end head; 4. a retainer; 5. a U-shaped groove; 6. a goal channel; 7. an oil supply assembly; 8. a steel ball; 9. a connecting block; 10. a first oil absorbing cotton; 11. an oil delivery groove; 12. a second oil absorbing cotton; 13. a first connection groove; 14. a first spring; 15. a second connecting groove; 16. a partition plate; 17. a chute; 18. a slide block; 19. a second spring; 20. a groove; 21. a limiting block; 22. and an oil delivery hole.

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, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, the present invention provides a technical solution: the linear bearing comprises a bearing sleeve 1, a fixed groove 2, a fixed end head 3, a retainer 4, a U-shaped groove 5, a ball inlet channel 6, an oil supply component 7, a steel ball 8, a connecting block 9, a first oil absorbing cotton 10, an oil conveying groove 11, a second oil absorbing cotton 12, a first connecting groove 13, a first spring 14, a second connecting groove 15, a baffle 16, a sliding groove 17, a sliding block 18, a second spring 19, a groove 20, a limiting block 21 and an oil conveying hole 22, wherein the retainer 4 is arranged in the bearing sleeve 1, the U-shaped groove 5 is arranged in the retainer 4, the steel ball 8 is arranged in the U-shaped groove 5, the two ends of the bearing sleeve 1 are connected with the fixed end head 3, the ball inlet channel 6 is arranged at the joint of one side of the fixed end head 3 and the U-shaped groove 5, the oil supply component 7 is arranged in the ball inlet channel 6, the oil supply component 7 comprises the connecting block 9, the first oil absorbing cotton 10, the oil conveying groove 11, the second oil absorbing cotton 12, the first connecting groove 13 and the first spring 14, one end of the oil supply assembly 7 is provided with a connecting block 9, one side of the connecting block 9 is fixedly connected with first oil absorbing cotton 10 through a bolt, an oil conveying groove 11 is formed in the inner central position of the connecting block 9, second oil absorbing cotton 12 is adhered to the inner part of the oil conveying groove 11, a first connecting groove 13 is formed in the outer wall of the other side of the connecting block 9, a first spring 14 is welded to the inner wall of the bottom of the first connecting groove 13, a second connecting groove 15 is formed in the inner part of the fixed end 3, a sliding groove 17 is formed in one side of the second connecting groove 15, a sliding block 18 is arranged in the sliding groove 17, one side of the sliding block 18 is connected with a partition 16 through a fixing rod, a groove 20 is formed in one side, close to the second connecting groove 15, of the outer wall of the partition 16 is fixedly connected to the central position of the bottom of the sliding groove 17 through a second spring 19, an oil delivery hole 22 is formed in the fixed end head 3 and above the partition plate 16, fixed grooves 2 are formed in the outer walls of the two ends of the bearing sleeve 1, and a limiting block 21 is arranged at one end, close to the oil delivery hole 22, of the inner wall of the sliding groove 17 so as to prevent the partition plate 16 from falling off from the inside of the sliding groove 17; the fixed end head 3 is fixedly connected with the bearing sleeve 1 through bolts, so that the fixed end head 3 is convenient to install; the bearing sleeve 1 and the retainer 4 are coaxially and cooperatively connected, and the concentricity of the bearing sleeve and the retainer is 1 mu m, so as to prevent the steel ball 8 from being blocked; the interval between the steel balls 8 is 15 mu m, so as to ensure that the steel balls 8 are fixed more firmly; the joint of the fixed end head 3 and the retainer 4 is provided with a sealing baffle plate for improving the tightness of the invention; the iron needle is clamped into the inner wall of the groove 20 by penetrating through the second connecting groove 15, the iron needle is broken towards one side of the second connecting groove 15, so that the sliding blocks 18 at two sides of the bottom end of the partition plate 16 slide along the sliding groove 17, the second spring 19 compresses to generate restoring force, lubricating oil is poured into the oil conveying hole 22 from the upper end, the lubricating oil flows into the first oil absorbing cotton 10 through the oil conveying groove 11 and the second oil absorbing cotton 12, the iron needle is extracted, the partition plate 16 returns to the initial position along the sliding groove 17 under the restoring force of the second spring 19, the lubricating oil is locked in the oil conveying hole 22, when the linear bearing does linear motion, the steel ball 8 moves in the U-shaped groove 5, when each steel ball 8 moves to the surface of the first oil absorbing cotton 10, the lubricating oil absorbed by the first oil absorbing cotton 10 is transferred to the surface of the steel ball 8 in a friction mode, the self-lubricating function of the linear bearing can be achieved, the problem that a sliding contact surface is damaged under the drying condition is solved, the service life of the steel ball 8 is guaranteed, when the steel ball 8 inside the retainer 4 is damaged due to collision of external factors of the linear bearing, only the screw on the outer side of the fixed end head 3 is required to be rotated, the fixed end head 3 is dismounted, the oil supply assembly 7 is taken down, quick replacement of the steel ball 8 can be achieved through the ball inlet channel 6, automatic equipment production can be facilitated, labor cost is reduced, meanwhile, the first spring 14 is arranged on one side of the connecting block 9, buffering can be carried out on the first spring 14 during working, radial load can be effectively absorbed, and accordingly the bearing capacity of the linear bearing is improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a linear bearing, including bearing housing (1), fixed slot (2), fixed end (3), holder (4), U type groove (5), goal passageway (6), oil feed subassembly (7), steel ball (8), connecting block (9), first oil absorption cotton (10), oil transportation groove (11), second oil absorption cotton (12), first connecting groove (13), first spring (14), second connecting groove (15), baffle (16), spout (17), slider (18), second spring (19), recess (20), stopper (21) and oil transportation hole (22), its characterized in that: the bearing sleeve (1) is internally provided with a retainer (4), the inside of retainer (4) is provided with a U-shaped groove (5), the inside of U-shaped groove (5) is provided with a steel ball (8), both ends of bearing sleeve (1) are all connected with fixed end (3), ball inlet channel (6) have been seted up to the junction of one side of fixed end (3) and U-shaped groove (5), the inside of ball inlet channel (6) is provided with oil feeding subassembly (7), oil feeding subassembly (7) include connecting block (9), first oil absorption cotton (10), oil transportation groove (11) second oil absorption cotton (12), first connecting groove (13) and first spring (14), the one end of oil feeding subassembly (7) is provided with connecting block (9), one side of connecting block (9) is through bolt fixedly connected with first oil absorption cotton (10), oil transportation groove (11) have been seted up to the inside central point of connecting block (9), the inside adhesion of oil transportation groove (11) has second oil absorption cotton (12), oil transportation groove (13) have first connecting block (13) of connecting block (13) inner wall (13), spout (17) have been seted up to one side of second spread groove (15), the internally mounted of spout (17) has slider (18), one side of slider (18) is connected with baffle (16) through the dead lever, recess (20) have been seted up to one side that the outer wall of baffle (16) is close to second spread groove (15), the bottom of baffle (16) is through the central point of second spring (19) fixed connection in spout (17) bottom, oil feed hole (22) have been seted up to the inside that is close to of fixed end (3) above of baffle (16), fixed slot (2) have all been seted up to the both ends outer wall of sleeve (1), the one end that the inner wall of spout (17) is close to oil feed hole (22) is provided with stopper (21), pass through bolt fixed connection between fixed end (3) and sleeve (1).

2. A linear bearing according to claim 1, wherein: the bearing sleeve (1) and the retainer (4) are coaxially and cooperatively connected, and the concentricity of the bearing sleeve and the retainer is 1 mu m.

3. A linear bearing according to claim 1, wherein: the interval between the steel balls (8) is 15 mu m.

4. A linear bearing according to claim 1, wherein: the joint of the fixed end head (3) and the retainer (4) is provided with a sealing baffle.