CN211371032U

CN211371032U - Linear bearing with high strength

Info

Publication number: CN211371032U
Application number: CN201922049201.1U
Authority: CN
Inventors: 罗祖金
Original assignee: Shenzhen Srd Automation Equipment Co ltd
Current assignee: Shenzhen Srd Automation Equipment Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-28
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a linear bearing that intensity is high, including the outer lane, the inboard of outer lane is provided with the screw thread annular, and the inboard threaded connection of screw thread annular has the ball holder, is connected with the ball between ball holder and the outer lane inner wall, and the spacing ring has been cup jointed to the side of outer lane, and the side symmetry of outer lane is provided with the screw hole, and the surperficial threaded connection of spacing ring has positioning bolt, and positioning bolt's one end threaded connection is in the inboard of screw hole. A lubricating cavity is arranged between the inner ball retainer of the linear bearing and the inner wall of the outer ring, and lubricating oil can be filled into the lubricating cavity only by disassembling the oil filling bolt on the surface of the limiting ring; the bearing absorbs heat through the heat dissipation oil in the cooling groove, so that the bearing is cooled.

Description

Linear bearing with high strength

Technical Field

The utility model relates to a bearing technical field specifically is a linear bearing that intensity is high.

Background

The linear bearing is a linear motion system, is matched with the guide shaft for use, and has the characteristics of small friction resistance, high motion precision and the like. Linear bearings are often used in textile machinery, food machinery, medical equipment, printing machinery, and other scenarios where precision of motion is a requirement. At present, the existing linear bearing is in rolling friction between a ball and a raceway in the using process, lubricating oil is required to form a lubricating film between the ball and the raceway, the direct contact between the ball and the raceway is avoided, otherwise, the sliding friction is formed between the ball and the surface of the raceway, a working surface contact point is under the action of load, the contact point is rapidly worn and torn, fatigue peeling can be generated, the existing linear bearing is more troublesome when the ball lubricates the ball inside the bearing after being installed in the bearing, and the linear bearing can generate a large amount of heat in the using process, and corresponding cooling measures are lacked.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a linear bearing that intensity is high to solve the trouble problem of linear bearing lubricating oil filling.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a linear bearing that intensity is high, includes the outer lane, the inboard of outer lane is provided with the screw thread annular, the inboard threaded connection of screw thread annular has the ball holder, be connected with the ball between ball holder and the outer lane inner wall, the spacing ring has been cup jointed to the side of outer lane, the side symmetry of outer lane is provided with the screw hole, the surperficial threaded connection of spacing ring has positioning bolt, positioning bolt's one end threaded connection is in the inboard of screw hole.

Preferably, the surface of the limiting ring is provided with an annular clamping groove, and the inner side of the annular clamping groove is clamped with a ball retainer.

Preferably, a lubrication cavity is formed between the ball retainer and the inner wall of the outer ring.

Preferably, the surface of the limiting ring is in threaded connection with an oiling bolt.

Preferably, the side of outer lane is provided with the cooling groove, and the inboard threaded connection in cooling groove has the sealing ring.

Preferably, the outer ring is made of 56HRC Rockwell hardness steel.

Compared with the prior art, the beneficial effects of the utility model are that: a lubricating cavity is formed between the inner ball retainer of the linear bearing and the inner wall of the outer ring, and lubricating oil can be filled into the lubricating cavity only by disassembling the oil filling bolt on the surface of the limiting ring.

The bearing absorbs heat through the heat dissipation oil in the cooling groove, so that the bearing is cooled.

Drawings

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

fig. 2 is a side sectional view of the overall structure of the present invention.

In the figure: the lubricating device comprises an outer ring 1, a cooling groove 11, a sealing ring 12, a threaded ring groove 13, a threaded hole 14, a limiting ring 2, a positioning bolt 21, an oiling bolt 22, an annular clamping groove 23, a ball retainer 3, balls 4 and a lubricating cavity 5.

Detailed Description

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a linear bearing that intensity is high, including outer lane 1, the inboard of outer lane 1 is provided with screw thread annular 13, the inboard threaded connection of screw thread annular 13 has ball holder 3, ball holder 3's left end threaded connection fixes a position the left end of ball holder 3 with this in the inboard of screw thread annular 13, be connected with ball 4 between ball holder 3 and the 1 inner wall of outer lane, spacing ring 2 has been cup jointed to the side of outer lane 1, the side symmetry of outer lane 1 is provided with screw hole 14, spacing ring 2's surperficial threaded connection has positioning bolt 21, positioning bolt 21's one end threaded connection is in screw hole 14's inboard, spacing ring 2 wipes to fix a position through positioning bolt 21 threaded connection screw hole 14 on the right side of outer lane 1.

Referring to fig. 1, the surface of the limit ring 2 is provided with an annular groove 23, the inner side of the annular groove 23 is clamped with the ball holder 3, the right side of the ball holder 3 is abutted and fixed through the annular groove 23, and the right end of the lubrication cavity 5 is sealed through the limit ring 2.

Referring to fig. 1, a lubrication cavity 5 is formed between the ball retainer 3 and the inner wall of the outer ring 1, and the balls 4 are lubricated by the lubricating oil in the lubrication cavity 5.

Referring to fig. 1, the surface of the retainer ring 2 is threadedly connected with an oiling bolt 22, the oiling bolt 22 is threadedly inserted into the surface of the retainer ring 2, and the lubricating oil can be injected into the lubricating cavity 5 by removing the oiling bolt 22.

Referring to fig. 1 and 2, a cooling groove 11 is formed in a side surface of the outer ring 1, the cooling groove 11 is annularly formed in the outer ring 1, a sealing ring 12 is threadedly connected to an inner side of the cooling groove 11, the cooling groove 11 is sealed by the sealing ring 12, and heat generated by friction between the balls 4 and an inner wall of the outer ring 1 is absorbed by heat dissipation oil in the cooling groove 11.

Referring to fig. 1, the outer ring 1 is made of a steel material having a rockwell hardness of 56 HRC.

The utility model discloses when concrete implementation: because be formed with lubricated chamber 5 between ball holder 3 and the 1 inner wall in outer lane, and the left side threaded connection of ball holder 3 is in the inboard of the thread ring groove 13 of outer lane 1, the right side joint of ball holder 3 is in the inboard of ring groove 23 of spacing ring 2, seal lubricated chamber 5's both ends through outer lane 1 and spacing ring 2, consequently to injecting lubricating oil in lubricated chamber 5 and can lubricate ball 4, because the surperficial threaded connection of spacing ring 2 has oiling bolt 22 again, dismantle the oiling bolt 22 on spacing ring 2 surface and can to annotate lubricating oil in lubricated chamber 5, lubricate the linear bearing with this convenience, the life who improves linear bearing has made things convenient for.

Because the cooling groove 11 ring shape of outer lane 1 side sets up the a week in the inside of outer lane 1, therefore when rolling ball 4 and the heat that produces of friction between 1 inner wall of outer lane, can absorb fast through cooling groove 11 heat dissipation oil to this cools down straight line bearing.

Claims

1. The utility model provides a linear bearing that intensity is high, includes outer lane (1), its characterized in that: a thread ring groove (13) is arranged on the inner side of the outer ring (1), the inner side of the thread ring groove (13) is connected with a ball retainer (3) in a threaded manner, balls (4) are connected between the ball retainer (3) and the inner wall of the outer ring (1), the side surface of the outer ring (1) is sleeved with a limit ring (2), the side surface of the outer ring (1) is symmetrically provided with threaded holes (14), the surface of the limiting ring (2) is in threaded connection with a positioning bolt (21), one end of the positioning bolt (21) is in threaded connection with the inner side of the threaded hole (14), the surface of the limiting ring (2) is provided with an annular clamping groove (23), the inner side of the annular clamping groove (23) is clamped with a ball retainer (3), a lubricating cavity (5) is formed between the ball retainer (3) and the inner wall of the outer ring (1), the surface of the limiting ring (2) is in threaded connection with an oiling bolt (22).

2. A high strength linear bearing as claimed in claim 1, wherein: the side of outer lane (1) is provided with cooling groove (11), and the inboard threaded connection of cooling groove (11) has sealing ring (12).

3. A high strength linear bearing as claimed in claim 1, wherein: the outer ring (1) is made of Rockwell hardness 56HRC steel.