CN112682425A

CN112682425A - Linear bearing capable of automatically feeding oil during working

Info

Publication number: CN112682425A
Application number: CN202011406274.2A
Authority: CN
Inventors: 王民豪
Original assignee: Ningbo Meiyate Precision Transfers Component Co ltd
Current assignee: Ningbo Meiyate Precision Transfers Component Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-04-20
Anticipated expiration: 2040-12-03
Also published as: CN112682425B

Abstract

The invention relates to the field of bearings and discloses a linear bearing with automatic oil feeding in work, which comprises a bearing outer sleeve, a retainer and balls, wherein the retainer is positioned in the bearing outer sleeve, the balls are positioned in the retainer, a flow passage for rolling the balls is arranged in the retainer, annular oil storage bins are arranged at two ends of the retainer, an oil storage pad and lubricating oil for lubrication are arranged in the oil storage bins, the oil storage pad can adsorb the lubricating oil, an oil guide hole communicated with the flow passage is arranged in the oil storage bins, a pressure plate is arranged in the oil storage bins, a moving mechanism for driving the pressure plate to move is arranged in the oil storage bins, a transmission mechanism comprises a transmission piece, the roller connected to one end of the transmission part and the driving disc controlled by the transmission part to move are rotated, the rotating column is arranged in the oil storage bin, the pressing plate is in threaded connection with the rotating column, the rotating column rotates along with the driving disc, the rotating column rotates to drive the pressing plate to move towards the direction of the oil storage pad, and the oil storage pad is extruded to drive lubricating oil located in the oil storage pad to be extruded out and enter the flow channel through the oil guide hole.

Description

Linear bearing capable of automatically feeding oil during working

Technical Field

The invention relates to the field of bearings, in particular to a linear bearing capable of automatically supplying oil during working.

Background

With the continuous increase of mechanical automatic production lines, the application of precision transmission parts is wider, and simultaneously, the requirements on the precision and the service life of the linear bearing are higher. When the linear bearing works, the steel ball and the raceway roll and rub, lubricating oil is needed to form a lubricating film between the steel ball and the raceway to prevent the steel ball and the raceway from directly contacting, otherwise, the steel ball and the raceway surface form sliding friction, and the contact point of the working surface is quickly worn under the action of load, so that fatigue spalling is generated, and the service life of the bearing is shortened.

The conventional common bearing is immersed in a small amount of lubricating oil when leaving a factory (because of no oil storage structure), the lubricating oil is consumed quickly in the using process, the bearing is damaged quickly under the condition of losing the lubricating oil, and most of the linear bearings on the market are not provided with an oiling component.

Disclosure of Invention

Aiming at the defect that the linear bearing in the prior art does not have an oil storage technology, the invention provides the linear bearing capable of automatically supplying oil during working.

In order to solve the technical problem, the invention is solved by the following technical scheme: a linear bearing for automatically supplying oil during working comprises a bearing outer sleeve, a retainer arranged in the bearing outer sleeve and balls arranged in the retainer, wherein a flow passage for rolling the balls is arranged in the retainer, annular oil storage bins are arranged at two ends of the retainer, an oil storage pad and lubricating oil for lubricating are arranged in the oil storage bins, the oil storage pad can absorb the lubricating oil, oil guide holes communicated with the flow passage are arranged in the oil storage bins, a pressing plate is arranged in the oil storage bins, a moving mechanism for driving the pressing plate to move is arranged in the oil storage bins, the transmission mechanism comprises a transmission piece, a roller rotationally connected to one end of the transmission piece and a driving disc controlled by the movement of the transmission piece, a rolling groove is arranged in the retainer, the linear bearing sleeve is arranged on an optical axis, the side surface of the roller is simultaneously abutted against the optical axis and the bottom surface of the rolling groove, when the optical axis moves relative to, the driving-disc rotates and connects in the oil storage storehouse, and the driving medium is kept away from gyro wheel one end and is promoted the driving-disc, orders about the driving-disc and rotates, is provided with the rotary column in the oil storage storehouse, and clamp plate and rotary column threaded connection rotate along with the driving-disc rotation, and the rotary column rotates and orders about the clamp plate and remove towards the oil storage pad direction, and the extrusion oil storage pad orders about the lubricating oil that is located the oil storage pad and extrudes and gets into in the runner through leading the oil.

Adopt above-mentioned scheme, pour into lubricating oil in the oil storage storehouse that is located linear bearing both ends, lubricating oil is when getting into the oil storage storehouse, the lubricating oil that is located the oil storage storehouse is adsorbed by the oil storage pad, linear bearing generally all overlaps and establishes on the optical axis, during both relative motion of linear axis and optical axis, the gyro wheel that is located linear bearing rolls in the rolling groove, linear bearing moves a round trip relative to the optical axis, the gyro wheel that is located the rolling groove also moves a round trip, be connected with the driving medium on the gyro wheel, the driving medium moves along with the gyro wheel removes, the driving-disc promotes the driving-disc and rotates at the in-process of round trip movement, the driving-disc rotates and drives the rotary column and rotates, rotary column and clamp plate threaded connection, the rotary column rotates and drives the clamp plate and move towards the oil storage pad, thereby the lubricating oil that will adsorb in the.

Preferably, the rotary column comprises a gear-shaped driven wheel section and a thread-shaped thread section, the driving disc comprises an incomplete gear-shaped driving wheel section and a driving section controlled by the driving part to move, a plurality of convex oblique blocks convenient for the driving part to push are arranged on the driving section, and the convex oblique blocks are arranged in an annular shape relative to the driving section.

By adopting the scheme, the incomplete gear has the advantages that the rotation stroke can be increased, the driving disc rotates for one circle, the rotary column only rotates for partial angle, and the rotation stroke is greatly increased.

Preferably, the transmission part comprises a transmission section pivoted on the roller and a pushing section matched with the chute, a first guide hole used for guiding the pushing section is formed in the retainer, a second guide hole opposite to the first guide hole is formed in the side wall of the oil storage bin, and the first guide hole is aligned with the second guide hole.

By adopting the scheme, the first guide hole is aligned with the second guide hole, and the installation is convenient.

Preferably, the pushing section is in a flexible shaft shape capable of elastic deformation, the pushing section is made of rubber, and the two guide holes are inclined relative to the central axis of the oil storage bin.

By adopting the scheme, the flexible shaft-shaped pushing section can deform, and the inclined guide hole II can increase the movement stroke of the pushing section.

Preferably, the rolling groove is formed in the axial direction of the retainer, avoidance grooves are formed in the two ends of the rolling groove, and the depth of each avoidance groove is larger than that of the corresponding rolling groove.

By adopting the scheme, the avoiding groove has the effect that the moving distance of the optical axis relative to the linear bearing is always larger than the length of the rolling groove, and when the optical axis slides for a single time, the roller can enter the avoiding groove after the roller slides the rolling groove, so that the friction of the roller on the optical axis is reduced.

Preferably, the roller comprises a first rolling section and a second rolling section which is positioned at two ends of the first rolling section, and sliding grooves used for sliding of the second rolling section are arranged on two opposite side surfaces of the rolling grooves.

Adopt above-mentioned scheme, the spout can be used to the direction of gyro wheel.

Preferably, one side of the pressing plate, which faces the oil storage pad, is connected with a sealing ring, and the side edge of the sealing ring is abutted against the side surface of the oil storage bin.

By adopting the scheme, the sealing ring has the function of improving the sealing property.

Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: when the optical axis slides in the linear bearing, the optical axis drives the roller to move, the optical axis moves back and forth relative to the linear bearing, the roller also drives the transmission piece to move back and forth, the transmission piece moves back and forth along the first guide hole and the second guide hole, because the two guide holes are inclined relative to the first guide hole, the driving disc can only rotate towards one direction, the pushing section of the transmission piece can push the convex inclined block to move, the transmission piece moves back and forth under the action of the roller, the driving disc is driven to rotate during the back and forth movement of the transmission piece, the optical axis moves back and forth relative to the linear bearing, the transmission piece pushes the convex inclined block, after the driving disc rotates a certain angle, the teeth on the driving wheel section are meshed with the driven wheel section of the rotary column, the driving disc continues to rotate to drive the rotary column, the rotary column rotates to drive the pressing plate to move along the axial direction of, the pressing plate extrudes the oil storage pad in the moving process, so that the oil storage pad gradually produces oil, only two teeth are arranged on the driving wheel section in hesitation, and the driving wheel rotates for half a circle and only drives the rotating column to rotate for an angle of one tooth thickness of the driven wheel section.

Drawings

FIG. 1 is a schematic view of an overall structure of a linear bearing for automatic oil supply in operation;

FIG. 2 is an exploded view of an in-service automatic oil feed linear bearing assembly;

FIG. 3 is a cross-sectional view of the cage;

FIG. 4 is a schematic view of an oil storage bin;

FIG. 5 is a view showing the combination of the driving member and the roller;

FIG. 6 is a schematic view of a drive plate configuration;

fig. 7 is a schematic view of a rotary column structure.

The names of the parts indicated by the numerical references in the above figures are as follows: 1. a bearing housing; 2. a holder; 3. a flow channel; 4. an oil storage bin; 5. an oil storage pad; 6. an oil guide hole; 7. pressing a plate; 8. a transmission member; 9. a roller; 10. a drive disc; 11. a rolling groove; 12. a first guide hole; 13. a transmission section; 14. a pushing section; 15. rolling a first section; 16. a rolling section II; 17. an avoidance groove; 18. a second guide hole; 19. a limiting sleeve; 20. a driving wheel section; 21. a drive section; 22. a card slot; 23. a convex oblique block; 24. turning the column; 25. a first rotating shaft section; 26. a driven wheel section; 27. a threaded segment; 28. a second rotating shaft section; 29. a seal ring; 30. and (4) teeth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The first embodiment is as follows:

a linear bearing for automatically supplying oil during working is disclosed, and firstly referring to fig. 1 and fig. 2, the linear bearing comprises a bearing outer sleeve 1, a retainer 2 positioned in the bearing outer sleeve 1 and balls positioned in the retainer 2, a flow passage 3 for rolling the balls is arranged in the retainer 2, two ends of the retainer 2 are respectively provided with an annular oil storage bin 4, the two oil storage bins 4 are respectively clamped with two ends of a holding frame, the two oil storage bins 4 are respectively clamped with the bearing outer sleeve 1, one end of the oil storage bin 4 far away from the retainer 2 is provided with an annular cavity, an oil storage pad 5 and lubricating oil are arranged in the cavity of the oil storage bin 4, the oil storage pad 5 can absorb most of the lubricating oil, the oil storage pad 5 can adopt sponge or oil absorption felt pad and the like, and combining with fig. 4, an oil guide hole 6 communicated with the flow passage 3 is arranged in the bottom surface of the cavity of the oil storage bin 4, an oil hole 6 is arranged on the retainer, the oil guide hole 6 on the retainer 2 is communicated with the flow channel, the pressing plate 7 is arranged in the oil storage bin 4, the moving mechanism used for driving the pressing plate 7 to move is arranged in the oil storage bin 4, the moving mechanism can drive the pressing plate 7 to move so as to extrude the oil storage pad 5, and oil adsorbed by the oil storage pad 5 enters the flow channel 3 through the oil guide hole 6 through extruding the oil storage pad 5, so that the lubricating effect is achieved.

Referring to fig. 1 to 3, the transmission mechanism includes a transmission member 8, a roller 9 rotatably connected to one end of the transmission member 8, and a driving disc 10 controlled to move with the transmission member 8, the holder 2 is in an annular cylindrical structure, the inner ring of the holder 2 is provided with a plurality of rolling grooves 11 along the axial direction, the plurality of rolling grooves 11 are arranged in an annular array and are located between the runners 3 of the plurality of holders 2, in this embodiment, four rolling grooves 11 are provided, but not limited to four, two or more rolling grooves 11 are provided, the four rolling grooves 11 are opposite to each other, the two rolling grooves 11 located on the same diameter are matched with the same oil storage bin 4, two end faces of the holder 2 are respectively provided with two guiding holes one 12, one end of each guiding hole one 12 is communicated with one end of the rolling groove 11, with reference to fig. 5, the transmission member 8 includes a transmission section 13 pivotally connected to the roller 9, the transmission section 13 is U-shaped, the roller 9 comprises a rolling section I15 in a shape of a round cake and a rolling section II 16 positioned on two end faces of the rolling section I15, the diameter of the rolling section II 16 is smaller than that of the rolling section I15, the rolling section I15 is positioned between the U-shaped transmission section 13, the rolling section II 16 is pivoted with the transmission section 13, the rolling groove 11 is arranged along the axis of the retainer 2, avoidance grooves 17 are respectively arranged at two ends of the rolling groove 11, the depth of the avoidance grooves 17 is larger than that of the rolling groove 11, sliding grooves for sliding and rolling the rolling section II 16 are arranged on two opposite side faces in the rolling groove 11, two ends of the sliding grooves extend into the avoidance grooves 17, linear bearings are generally sleeved on the optical axis, when the roller 9 is positioned in the rolling groove 11, the side faces of the roller 9 are simultaneously abutted against the optical axis and the bottom face of the rolling groove 11, when the roller 9 is positioned in the avoidance grooves 17, the roller 9 is only abutted against the optical axis, and, the roller 9 can move along the length square of the rolling groove 11, the roller 9 moves to drive the transmission part 8 to move, when the roller 9 is positioned in the avoiding groove 17, the transmission part 8 stops moving, the roller 9 can rotate circumferentially in the avoiding groove 17, a guide hole II 18 opposite to the guide hole I12 is arranged on the inner side wall of the oil storage bin 4, the guide hole II 18 is in a half-groove shape, the number of the guide hole II 18 on each oil storage bin 4 is two according to the number of the guide hole I12, one end of the guide hole I12 is aligned with one end of the guide hole II 18, the guide hole II 18 is in an inclined shape relative to the central axis of the oil storage bin 4, the inclined guide hole II 18 has the advantages of prolonging the movement stroke of the pushing section 14, being convenient to adapt to the length of the rolling groove 11, the inclined guide hole II 18 can be convenient to drive the driving disc 10 to rotate only in one direction, the pushing section 14 is made of rubber, and the pushing section 14 is in, the transmission section 13 adopts hard material, and the promotion section 14 is the post forming with the transmission section 13, and the benefit that promotion section 14 is flexible axle form lies in, because two 18 of guiding holes are certain angle relative to guiding hole one 12, thereby it is convenient for crooked and the cooperation of two 18 of guiding holes of slope to promote section 14, and promotion section 14 is clearance fit with guiding hole one 12 and two 18 of guiding holes.

Referring to fig. 1 and 2, a driving disk 10 is annular, a limiting sleeve 19 is clamped on an outer ring of an oil storage bin 4, the limiting sleeve 19 can limit the driving disk 10 to move in the axial direction, the driving disk 10 can only rotate in the circumferential direction, referring to fig. 6, the driving disk 10 includes a driving wheel section 20 in an incomplete gear shape and a driving section 21 controlled by a transmission member 8 to move, the driving section 21 and the driving wheel section 20 are located on the same side of the driving disk 10, the driving section 21 and the driving wheel section 20 are both annular, the inner diameter of the driving section 21 is larger than the outer diameter of the driving wheel section 20, the driving section 21 is sleeved outside the driving wheel section 20, the inner diameter of the driving section 21 and the outer diameter of the driving wheel section 20 are arranged at intervals to form a clamping groove 22, an annular cylinder formed by the cavity of the oil storage bin 4 and the inner wall of the oil storage bin 4 is located in the annular clamping groove 22 and is in clearance, the plurality of convex inclined blocks 23 are positioned on one side of the annular clamping groove 22 far away from the central axis, the plurality of convex inclined blocks are arranged in a circle relative to the driving section 21, the driving section 20 is convexly provided with a plurality of teeth 30, in the embodiment, the driving section 20 is provided with two teeth 30, but the number of the teeth 30 is not limited to one or more, the two teeth 30 are uniformly arranged at intervals, the two teeth 30 in the embodiment are positioned on the same diameter, the oil storage bin 4 is internally provided with a rotary column 24, in combination with the figure 7, the rotary column 24 sequentially comprises a rotary shaft section I25, a gear-shaped driven wheel section 26, a thread-shaped thread section 27 and a rotary shaft section II 28 with the diameter not larger than the thread section 27, the pressure plate 7 is provided with a threaded hole matched with the thread section 27, the limiting sleeve 19 and the bottom surface of the containing cavity of the oil storage bin 4 are both provided with counter holes, and the rotary shaft section I25 and the rotary shaft section II 28 are respectively and rotatably connected, tooth 30 that is located on action wheel section 20 can drive when meshing from driving wheel section 26 and follow driving wheel section 26 and rotate, be provided with many rotary columns 24 in this embodiment, many rotary columns 24 are the annular array and arrange, be equipped with two rotary columns 24 in this embodiment, but the non-restriction is two rotary columns 24, also can be one or more, two rotary columns 24 in this embodiment are located its same diameter in oil storage bin 4 respectively, it is equipped with round sealing washer 29 to be located the cover on its side of clamp plate 7, sealing washer 29 is its inner circle of annular and clamp plate 7 joint, sealing washer 29 outer lane is equipped with the seal lip, the side butt in seal lip and oil storage bin 4, be located and offer the hole of dodging that is used for dodging rotary column 24 on the oil storage pad 5.

When the optical axis slides in the linear bearing, the optical axis drives the roller 9 to move, the optical axis moves back and forth relative to the linear bearing, the roller 9 also drives the transmission member 8 to move back and forth, in the process that the transmission member 8 moves along the first guide hole 12 and the second guide hole 18, because the second guide hole 18 is inclined relative to the first guide hole 12, the driving disc 10 can only rotate towards one direction, the pushing section 14 of the transmission member 8 can push the convex inclined block 23 to move, the transmission member 8 moves back and forth under the action of the roller 9, the driving disc 10 is driven to rotate in the process that the transmission member 8 moves back and forth relative to the linear bearing, the transmission member 8 pushes the convex inclined block 23, after the driving disc 10 rotates for a certain angle, the teeth 30 on the driving wheel section 20 are meshed with the driven wheel section 26 of the rotary column 24, the driving disc 10 continues to rotate, the rotary column 24 rotates, and the rotary column 24 can drive the pressing plate 7 to move along the, the central axis of the rotary column 24 is parallel to the central axis of the linear bearing, the pressing plate 7 presses the oil storage pad 5 in the moving process, so that the oil storage pad 5 gradually produces oil, and the driving disc 10 rotates for half a circle and only drives the rotary column 24 to rotate by an angle of one tooth thickness of the driven wheel section 26 because only two teeth 30 are arranged on the driving wheel section 20.

Claims

1. A linear bearing for automatically feeding oil during work comprises a bearing outer sleeve (1), a retainer (2) positioned in the bearing outer sleeve (1) and balls positioned in the retainer (2), wherein a flow passage (3) for rolling the balls is arranged in the retainer (2), and the linear bearing is characterized in that two ends of the retainer (2) are provided with annular oil storage bins (4), oil storage pads (5) and lubricating oil for lubrication are arranged in the oil storage bins (4), the oil storage pads (5) can adsorb the lubricating oil, oil guide holes (6) communicated with the flow passage (3) are arranged in the oil storage bins (4), a pressing plate (7) is arranged in the oil storage bins (4), a moving mechanism for driving the pressing plate (7) to move is arranged in the oil storage bins (4), the transmission mechanism comprises a transmission piece (8), a roller (9) rotationally connected to one end of the transmission piece (8) and a driving disc (10) controlled by the transmission piece (8) to move, a rolling groove (11) is arranged in the retainer (2), the linear bearing is sleeved on the optical axis, the side surface of the roller (9) is simultaneously abutted against the optical axis and the bottom surface of the rolling groove (11), when the optical axis moves relative to the linear bearing, its length direction in roll groove (11) can be followed in gyro wheel (9) removes, gyro wheel (9) remove and drive driving medium (8) and remove, driving-disc (10) rotate to be connected in oil storage storehouse (4), gyro wheel (9) one end promotion driving-disc (10) are kept away from in driving medium (8), it rotates to order about driving-disc (10), be provided with rotary column (24) in oil storage storehouse (4), clamp plate (7) and rotary column (24) threaded connection, rotary column (24) rotate and rotate along with driving-disc (10), rotary column (24) rotate and order about clamp plate (7) and move towards oil storage pad (5) direction, extrude oil storage pad (5) and order about the lubricating oil that is located oil storage pad (5) to extrude and get into in runner (3) through oil guide hole (6).

2. The linear bearing for automatic oil feeding in operation according to claim 1, wherein the rotary column (24) comprises a gear-shaped driven wheel section (26) and a thread-shaped thread section (27), the driving wheel (10) comprises an incomplete gear-shaped driving wheel section (20) and a driving section (21) controlled by the driving member (8), a plurality of convex blocks (23) convenient for the driving member (8) to push are arranged on the driving section (21), and the convex blocks (23) are annularly arranged relative to the driving section (21).

3. A linear bearing for automatic oil feeding in operation according to claim 2, characterized in that the transmission member (8) comprises a transmission section (13) pivotally connected to the roller (9) and a pushing section (14) for cooperating with the chute, a first guide hole (12) for guiding the pushing section (14) is provided in the holder (2), a second guide hole (18) opposite to the first guide hole (12) is provided in the side wall of the oil storage bin (4), and the first guide hole (12) is aligned with the second guide hole (18).

4. The linear bearing for automatically feeding oil in operation according to claim 3, wherein the pushing section (14) is in a flexible shaft shape capable of elastic deformation, the pushing section (14) is made of rubber, and the second guide hole (18) is inclined relative to the central axis of the oil storage bin (4).

5. The linear bearing with the automatic oil feeding function in the working process according to the claim 1 is characterized in that the rolling groove (11) is formed along the axial direction of the retainer (2), avoidance grooves (17) are respectively arranged at two ends of the rolling groove (11), and the depth of the avoidance grooves (17) is larger than that of the rolling groove (11).

6. The linear bearing for automatically feeding oil in operation according to claim 1, wherein the roller (9) comprises a first rolling section (15) and a second rolling section (16) positioned at two ends of the first rolling section (15), and sliding grooves for sliding the second rolling section (16) are arranged on two opposite side surfaces of the rolling groove (11).

7. Linear bearing for automatic feeding of oil during operation according to claim 1, characterized in that a sealing ring (29) is connected to the pressure plate (7) on the side facing the oil pad (5), the side of the sealing ring (29) abutting against the side of the oil sump (4).