CN205780292U - A kind of rolling oscillating bearing - Google Patents

Abstract

The utility model discloses a kind of rolling oscillating bearing.The inner surface of described bearing outer ring and the outer surface of bearing inner race are the sphere that the centre of sphere overlaps, have ball-and-socket to the inner surface distribution of described bearing outer ring, ball-and-socket is built with spherical rolling body, the inner surface of bearing outer ring is provided with a circle ball-and-socket on different ring-shaped peripheries, often circle ball-and-socket is circumferentially spaced uniform, each circle ball-and-socket of different ring-shaped peripheries is distributed with bearing outer ring centrosymmetry, so that ball-and-socket is uniformly distributed on axial and circumferential along the axial of bearing outer ring.This utility model can realize three shaft spaces and rotate, and sliding friction is become rolling friction by sphere part, reduces friction factor, improves fatigue life, and multiple ball-joint carries and can increase bearing capacity, can bear radial load and axial load.

Description

A kind of rolling oscillating bearing

Technical field

This utility model relates to a kind of oscillating bearing, especially relates to a kind of rolling realizing rotating by rolling friction and closes Bearings.

Background technology

Generally, oscillating bearing refers to a kind of spherical bearing, and its sliding contact surface is outside an Internal Spherical Surface and one Sphere, can realize three shaft spaces rotate at arbitrarily angled rotary oscillation during motion, and it is big that oscillating bearing has load-carrying ability, Shock resistance, the features such as anticorrosive, wear-resistant, Self-aligning, lubrication are good.Owing to the rolling bearing of rolling friction is compared to solid lubrication Sliding bearing to have friction factor low, the feature that wear extent is little, the rolling oscillating bearing involved by this utility model is to cunning The improvement of dynamic friction oscillating bearing.Meanwhile, although self-aligning ball bearing can automatic aligning, but its allow angular displacement only have 2 °～ 3 °, bigger angular displacement can not be born.

Utility model content

In order to solve problem present in background technology, the purpose of this utility model is that providing a kind of rolls joint shaft Hold, realize rotating by rolling friction, increase bearing and can bear angular displacement.

The technical solution of the utility model is:

This utility model includes bearing outer ring and bearing inner race, outside the inner surface of described bearing outer ring and bearing inner race Surface is the sphere that the centre of sphere overlaps, and has ball-and-socket to the inner surface distribution of described bearing outer ring, and ball-and-socket is built with spherical rolling Body.

The inner surface of described bearing outer ring is provided with a circle ball-and-socket on different ring-shaped peripheries, and often circle ball-and-socket is circumferentially spaced Uniform, each circle ball-and-socket of different ring-shaped peripheries is distributed along the axial of bearing outer ring with bearing outer ring centrosymmetry, so that ball Nest is uniformly distributed on axial and circumferential.

In described spherical rolling body takes intensity is high, wearability is good GCr15 or ceramic material, bearing outer ring and bearing Roller bearing steel GCr15 taked by circle.

This utility model has the beneficial effect that

This utility model changes the sliding friction of oscillating bearing into rolling friction by structure optimization, reduces moment of friction And friction factor, increase bearing simultaneously and can bear angular displacement, there is the engineering significance of reality.

Rolling oscillating bearing of the present utility model is lower than the sliding bearing friction factor of existing solid lubrication, and wear extent is little, Bearing is long for service life.

This utility model need not retainer, can realize three shaft spaces and rotate, improve fatigue life.Due to three shaft space rotations Turning, the number of times of the point cantact ginseng Cyclic Stress on each ball decreases, and therefore improves fatigue life.

This utility model has multiple ball-joint to carry, and increases bearing capacity, can bear radial load and axial load, Ke Yicheng simultaneously By bi-directional axial load.

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model.

Fig. 2 is this utility model schematic diagram when there is regulation of mental activities motion.

In figure: 1, bearing outer ring, 2, ball-and-socket, 3, spherical rolling body, 4, bearing inner race.

Detailed description of the invention

Below in conjunction with drawings and Examples, this utility model is further described.

As it is shown in figure 1, this utility model includes bearing outer ring 1 and bearing inner race 4 and spherical rolling body 5, bearing outer ring 1 Inner surface and the outer surface of bearing inner race 4 be the sphere that the centre of sphere overlaps, have to the inner surface distribution of described bearing outer ring 1 Ball-and-socket 2, ball-and-socket 2 is built with spherical rolling body 3.The inner surface of bearing outer ring 1 is provided with a circle ball-and-socket 2 on different ring-shaped peripheries, Often circle ball-and-socket 2 is circumferentially spaced uniform, axial with in bearing outer ring 1 along bearing outer ring 1 of each circle ball-and-socket 2 of different ring-shaped peripheries The heart is symmetrical.Owing to being rolling friction, compared to the sliding bearing of solid lubrication, it is low that it has friction factor, and wear extent is little Feature.

As in figure 2 it is shown, when bearing generation regulation of mental activities moves, this rolling oscillating bearing can realize three shaft space rotary motions. In motor process, each spherical rolling body 5 respectively can't be as traditional with the contact point of bearing outer ring 1 and bearing inner race 4 Rolling bearing is the most only distributed on a specific circumference like that, and each point on ball can be joined in rotating along with each of axle With contact, thus each point cantact participate in stress-number of cycles decrease, improve fatigue life.Simultaneously as multiple balls Carrying, adds bearing capacity, improves dynamic loading.

Spherical rolling body takes intensity is high, wearability is good GCr15 or ceramic material, bearing outer ring and bearing inner race to take Roller bearing steel GCr15.

Below equation (1) can be used the fatigue life of bearing to calculate:

$L_{10}={\left(\frac{C}{P}\right)}^{\mathrm{\ϵ}}---\left(1\right)$

In formula, L₁₀For basic rating life, unit is 10⁶r；P is equivalent radial load, and unit is N；C is the most specified dynamic Load, unit is N；ε is life index, test determine.

Owing to fatigue life becomes positive exponent relation with basic dynamic load rating, therefore this utility model is under specific load, Both reduce the stress of each point cantact, also improve fatigue life.

Rolling oscillating bearing of the present utility model can realize three shaft spaces and rotate, and sliding friction is become rolling by sphere part Friction, reduces friction factor, improves fatigue life, and multiple ball-joint carries and can increase bearing capacity, can bear radial load and Axial load.

Above-mentioned detailed description of the invention is used for illustrating this utility model rather than limiting this utility model, In spirit of the present utility model and scope of the claims, any modifications and changes that this utility model is made, all fall Enter protection domain of the present utility model.

Claims (4)

1. roll an oscillating bearing, including bearing outer ring (1) and bearing inner race (4), it is characterised in that: described bearing outer ring (1) inner surface and the outer surface of bearing inner race (4) are the sphere that the centre of sphere overlaps, and the inner surface of described bearing outer ring (1) divides Having ball-and-socket (2), ball-and-socket (2) is built with spherical rolling body (5) cloth.

A kind of rolling oscillating bearing the most according to claim 1, it is characterised in that: the interior table of described bearing outer ring (1) Face is provided with a circle ball-and-socket (2) on different ring-shaped peripheries, often encloses ball-and-socket (2) circumferentially spaced uniform.

The most according to claim 1 a kind of roll oscillating bearing, it is characterised in that: different ring-shaped peripheries respectively enclose ball-and-socket (2) it is distributed along the axial of bearing outer ring (1) with bearing outer ring (1) centrosymmetry.

A kind of rolling oscillating bearing the most according to claim 1, it is characterised in that: described spherical rolling body (5) is taked Intensity is high, wearability is good GCr15 or ceramic material, bearing outer ring (1) and bearing inner race (4) take roller bearing steel GCr15.