CN215333966U

CN215333966U - A self-lubricating spacer cage micro-textured rolling bearing

Info

Publication number: CN215333966U
Application number: CN202121530689.0U
Authority: CN
Inventors: 潘承怡; 常佳豪
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-28
Anticipated expiration: 2031-07-07

Abstract

The utility model relates to a self-lubricating function of a spacer cage micro-textured rolling bearing, comprising an inner ring, an outer ring and balls, an spacer cage assembly is arranged between adjacent balls and the inner ring, and a hollow spiral spacer is formed by a hollow spiral spacer. It is composed of a cage and a cage. The conical surface of the hollow spiral isolator is provided with a thread-type micro-textured groove, and its internal hollow forms a dynamic pressure lubrication with the pin shaft of the cage. The density of pits and pits gradually becomes thinner from the middle of the inner ring of the bearing to both sides, which plays the role of oil storage and self-lubrication. The utility model has a simple structure, the micro-texture of the bearing improves the lubricating performance of the bearing during the movement process, the spacer cage assembly converts sliding friction into rolling friction, reduces friction and wear, reduces the amplitude of the bearing, and improves the limit of the bearing speed and service life.

Description

Self-lubricating separator retainer micro-texture rolling bearing

Technical Field

The utility model relates to a self-lubricating separator holder micro-texture rolling bearing, in particular to the technical field of rolling bearings.

Background

In the operation process of a conventional rolling bearing, sliding friction exists between a retainer and balls, which has great influence on the performance of the bearing, and due to the centrifugal action of oil, the balls are easy to generate dry friction phenomenon at the contact position of a raceway under the condition of impact vibration, so that the balls and the raceway are very easy to cause friction and abrasion. And the relative sliding between the balls of the bearing without the retainer is twice of the self rotating speed, so the limit rotating speed of the bearing is limited. In recent years, a retainer is replaced by a plurality of isolated body bearings, each ball is isolated by an isolated body in a certain shape, sliding friction is converted into pure rolling friction, but the isolated body is not uniformly stressed in the operation process, the isolated body is easy to incline and block, the vibration and noise of the bearing are large, the bearing is unstable in operation, the axial positioning of the isolated body in the working process is not reliable, the axial separation is possible, and the safety performance is low. Therefore, a separator holder micro-texture rolling bearing with a self-lubricating function is developed.

Disclosure of Invention

The utility model aims to provide a self-lubricating separator retainer micro-texture rolling bearing, which aims to improve the lubricating condition of a bearing, reduce the vibration and the noise of the bearing and reduce the friction and the abrasion of the bearing so as to prolong the service life of the bearing.

In order to achieve the above object, the present invention mainly comprises: microtextured inner and outer rings, spacer holder assemblies, balls, etc.

The micro-texture inner ring is characterized in that micro-texture pits (2) are machined on two sides of a raceway of the inner ring (6), the pits are circular, the depth is 80 micrometers, the diameter is 100 micrometers, the pit interval near the middle of the raceway is 80 micrometers, the micro-texture interval at the outer edge of the raceway is 120 micrometers, and the micro-texture interval follows an arithmetic progression from inside to outside.

The separator retainer assembly mainly comprises a hollow spiral separator (3) and a retainer (5), a pin shaft (8) is matched with a hole shaft of the hollow spiral separator (3), and the pin shaft (3) is in interference fit with a left side plate (7) of the retainer and a right side plate (9) of the retainer. The hollow spiral separator (3) has a screw-type groove (10) having a groove width of 60 μm and a depth of 100. mu.m.

Drawings

FIG. 1 is a schematic view of a bearing of the present invention.

Fig. 2 is a schematic view of the microtextured inner ring of the present invention.

FIG. 3 is a component view of the spacer holder of the present invention.

FIG. 4 is a front view of a hollow spiral separator of the present invention.

In the figure: 1. the device comprises a ball, 2 parts of micro-texture pits, 3 parts of hollow spiral separators, 4 parts of outer rings, 5 parts of retainers, 6 parts of inner rings, 7 parts of retainer left side plates, 8 parts of pins, 9 parts of retainer right side plates, 10 parts of thread-shaped grooves.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, the present invention mainly comprises: the structure comprises a ball 1, a micro-texture pit 2, a hollow spiral isolating body 3, an outer ring 4, a retainer 5 and an inner ring 6; the balls 1 are contacted with the isolated body retainer assembly and are isolated by equal intervals; the inner race 7 and the outer race 4 restrict axial play of the balls 1 through the built-in raceways, the balls 1 restrict axial movement of the hollow helical isolators 3 through contact with the tapered surfaces of the hollow helical isolators 3, and the hollow helical isolators 3 restrict axial movement of the cage 5.

Referring to the attached figure 2, the micro-texture inner ring is characterized in that micro-texture pits 2 are machined on two sides of a raceway of a bearing inner ring 6, the pits are circular, the depth is 80 micrometers, the diameter is 100 micrometers, the space between the pits near the middle of the raceway is 80 micrometers, the space between the micro-textures near the edge of the raceway is 120 micrometers, and the micro-texture space follows an arithmetic progression from inside to outside; the micro-texture pits 2 are processed on two sides of the inner ring raceway, so that the bearing capacity of the bearing is guaranteed, and the bearing vibration caused by the micro-texture pits is avoided; the pits have good oil storage and self-lubricating functions, when the rotating speed is not high, lubricating oil stored in the micro-texture pits at two sides near the middle of the roller path flows to the middle of the roller path under the action of centrifugal force, and when the rotating speed is high, the lubricating oil in the micro-texture pits at the outer edge of the roller path flows to the middle micro-texture pits under the action of centrifugal force to supply oil to the micro-texture pits of the middle roller path, so that the self-lubricating function is finally realized.

Referring to fig. 1 to fig. 3 to fig. 4, the spacer holder assembly comprises: hollow spiral isolator 3, holder left side board 7, round pin axle 8, holder right side board 9, screw thread type recess 10, form dynamic pressure lubrication between hollow spiral isolator 3 and round pin axle 8 in bearing operation process, screw thread type recess 10 on hollow spiral isolator 3 surface, can store a certain amount of lubricating oil, and be drawn into the raceway central authorities with the lubricating oil of bearing both sides, play the purpose of gathering together lubricating oil, make the lubricating property between ball 1 and the isolator holder subassembly improve greatly, and adopt novel isolator holder can be with the sliding friction between ball 1 and the holder 5, turn into pure rolling friction, frictional wear between ball 1 and the holder 5 has been reduced, the limit speed of bearing has been improved, the life of extension bearing.

As described above, only the preferred embodiments of the present invention are described, and it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principle and spirit of the present invention, and all such changes, modifications, substitutions and alterations are intended to be covered by the scope of the present invention.

Claims

1. A self-lubricating separator holder micro-texture rolling bearing is characterized by comprising: the device comprises balls (1), micro-texture pits (2), hollow spiral separators (3), an outer ring (4), a retainer (5) and an inner ring (6); the balls (1) are in contact with the separator holder assembly and are separated at equal intervals; the inner ring (6) and the outer ring (4) limit axial movement of the balls (1) through built-in roller paths, the balls (1) limit axial movement of the hollow spiral isolating bodies (3) through contact with conical surfaces of the hollow spiral isolating bodies (3), and the hollow spiral isolating bodies (3) limit axial movement of the retainer (5).

2. The self-lubricating separator holder microtextured rolling bearing according to claim 1, wherein the separator holder assembly comprises: a hollow spiral separator (3) and a holder (5); the hollow spiral isolator (3) is matched with a hole shaft of a pin shaft (8) on the retainer (5), and a thread-shaped groove (10) with the depth of 100 microns is formed in the conical surface of the hollow spiral isolator (3).

3. The self-lubricating separator holder micro-textured rolling bearing according to claim 1, wherein the micro-textured inner ring comprises: an inner ring (6) and a microtextured pit (2); the microtexture pit (2) is a round pit, the depth of the pit is 80 microns, and the diameter of the pit is 100 microns; the micro-texture pits (2) are uniformly distributed on two sides of a raceway of the inner ring (6), the micro-texture space close to the middle of the raceway is 80 micrometers, the micro-texture space close to the edge of the raceway is 120 micrometers, and the micro-texture space follows an arithmetic progression from inside to outside.