CN206626098U - Ball bearing - Google Patents
Ball bearing Download PDFInfo
- Publication number
- CN206626098U CN206626098U CN201720347273.2U CN201720347273U CN206626098U CN 206626098 U CN206626098 U CN 206626098U CN 201720347273 U CN201720347273 U CN 201720347273U CN 206626098 U CN206626098 U CN 206626098U
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- CN
- China
- Prior art keywords
- ball
- bearing
- outer ring
- channel
- retainer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of ball bearing, including bearing outer ring, bearing inner race and retainer：The bearing outer ring has outer ring raceway, and the bearing inner race has bear inner ring grooved railway, and outer ring raceway inclusion relative with the bear inner ring grooved railway forms bearing channel；The retainer is provided with 3 balls, and circumferencial direction of the ball along the ball bearing is uniformly distributed；The ball is rollably held on the bearing channel, and the retainer is rotatably held between the bearing outer ring and the bearing inner race with the motion of the ball；There is clearance, the number range of the clearance is 3~30 microns between the ball and the bearing channel.The utility model provides the ball bearing that a kind of manufacturing cost is low, noise is small.
Description
Technical field
The utility model belongs to technical field of bearings, is a kind of ball bearing specifically.
Background technology
Bearing (Bearing) is a kind of important spare part in contemporary plant equipment.Its major function is support machinery rotation
Swivel, reduces the coefficient of friction in its motion process, and ensure its rotating accuracy.In circular motion, bearing is indispensable
Parts.
By the difference of motor element frictional property, bearing can be divided into rolling bearing and the major class of sliding bearing two.Wherein, roll
Bearing is increasingly extensive due to the energy saving and high accuracy of rolling friction form, application, it has also become wherein mostly important point
Branch.
According to the difference of rolling element, rolling bearing can be divided into ball bearing and the major class of roller bearing two again.Ball bearing is called
Ball bearing, using ball as rolling element, it is impossible to bear larger load, the industrial occasions for being applied to underloading more.
Current ball bearing needs to use seven balls, and assembly difficulty is very high and causes assembly technology complicated, is assembled into
This is high.Meanwhile ball processing cost is high, large number of ball has further aggravated manufacturing cost.In addition, quantity
Numerous balls, further increases the friction between ball and bearing channel, and noise is very big.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of ball bearing, has and simplifies structure and have
Effect reduces manufacturing cost and assembly difficulty, and cost is cheap and noise very little.
The purpose of this utility model is achieved through the following technical solutions：
A kind of ball bearing, including bearing outer ring, bearing inner race and retainer：
The bearing outer ring has an outer ring raceway, and the bearing inner race has a bear inner ring grooved railway, the outer ring raceway with it is described
The relative inclusion of bear inner ring grooved railway forms bearing channel；
The retainer is provided with 3 balls, and circumferencial direction of the ball along the ball bearing is uniformly distributed；
The ball is rollably held on the bearing channel, and the retainer rotates with the motion of the ball
Ground is held between the bearing outer ring and the bearing inner race；
There is clearance, the number range of the clearance is 3~30 microns between the ball and the bearing channel.
As the improvement of above-mentioned technical proposal, under that loading condition, the ball with 4 points of the bearing channel to contact
Action mode be rollably held on the bearing channel.
As the further improvement of above-mentioned technical proposal, the pressure angle numerical value model between the ball and the bearing channel
Enclose for 40 °~50 °.
As the further improvement of above-mentioned technical proposal, the circularity of the bear inner ring grooved railway is not more than 5 microns.
As the further improvement of above-mentioned technical proposal, the surface roughness of the bear inner ring grooved railway is not more than 0.5 micron.
As the further improvement of above-mentioned technical proposal, the circularity of the outer ring raceway is not more than 5 microns.
As the further improvement of above-mentioned technical proposal, the surface roughness of the outer ring raceway is not more than 0.5 micron.
As the further improvement of above-mentioned technical proposal, the retainer is provided with the pocket hole for being used for accommodating the ball,
The both ends open in the pocket hole is respectively for the outer ring raceway and the bear inner ring grooved railway.
It is spherical no more than 0.25 micron as the further improvement of above-mentioned technical proposal, the bulb diameter deviation of the ball
Deviation is not more than 0.25 micron.
As the further improvement of above-mentioned technical proposal, the surface roughness of the ball is not more than 0.02 micron.
The beneficial effects of the utility model are：By on retainer set 3 balls, retainer with the rolling of ball and
Rotatably it is held on bearing channel, the clearance in 3~30 micrometer ranges is provided between ball and bearing channel, is realized
The structure type of bearing inner race and bearing outer ring is connected with 3 balls, reduces ball number, reduces assembly difficulty, there is provided
A kind of manufacturing cost is low, noise is small ball bearing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the front view for the ball bearing that the utility model embodiment 1 provides；
Fig. 2 is the A-A sectional views of ball bearing in Fig. 1；
Fig. 3 is zoomed-in view at the M of ball bearing in Fig. 2；
Fig. 4 is zoomed-in view at the N of ball bearing in Fig. 3.
Main element symbol description：
1000- ball bearings, 0100- bearing outer rings, 0110- outer ring raceway, 0200- bearing inner races, 0210- inner ring ditches
Road, 0300- retainers, 0310- pockets hole, 0400- balls, α-pressure angle.
Embodiment
For the ease of understanding the utility model, ball bearing is described more fully below with reference to relevant drawings.
The preferred embodiment of ball bearing is given in accompanying drawing.But ball bearing can be realized by many different forms, and
It is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is to make the disclosure to ball bearing
More thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is intended merely to herein in the term used in the description of ball bearing
The purpose of specific embodiment is described, it is not intended that limitation the utility model.Term as used herein " and/or " include one
Or the arbitrary and all combination of multiple related Listed Items.
Embodiment 1
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, ball bearing 1000 includes bearing outer ring 0100, bearing inner race 0200
With retainer 0300：
Bearing outer ring 0100 has outer ring raceway 0110, and bearing inner race 0200 has bear inner ring grooved railway 0210, outer ring raceway
0110 forms bearing channel with the inclusion relatively of bear inner ring grooved railway 0210；
Retainer 0300 is provided with 3 balls 0400, and circumferencial direction of the ball 0400 along ball bearing 1000 is uniformly distributed；
Ball 0400 is rollably held on bearing channel, and retainer 0300 is rotatably protected with the motion of ball 0400
It is held between bearing outer ring 0100 and bearing inner race 0200；
There is clearance, the number range of clearance is 3~30 microns between ball 0400 and bearing channel.
Specifically, the clearance between ball 0400 and bearing channel, refer to after ball bearing 1000 completes assembling, by axle
When bearing outer-ring 0100 is fixed with the side in both bearing outer rings 0100, make footpath of the opposing party along ball bearing 1000 in the two
To or the generable displacement of axial movement institute.
The size of clearance has an impact to performances such as the fatigue life of ball bearing 1000, temperature rise, noise, vibrations.3~
In the range of 30 microns of clearance, the clearance distance of ball 0400 and bearing channel is reasonable.When rolling bearing is by load effect,
Internal and external cycle is pressurized and extrudes ball 0400.Crimp occurs for ball 0400 and bearing channel, in the form of a contact transmission move
Power and motion.
Because clearance numerical value is reasonable, the deflection of ball 0400 and bearing channel is in ideal range, makes 3 balls
0400 can equably receive load, the bias for avoiding excess play from being led to, while the carrying deficiency for avoiding small―gap suture from being led to.
The reasonable deflection that clearance is ensured, to help to maintain the specified model that stress is in ball 0400 and bearing channel
In enclosing, avoid stress excessive and contact surface is damaged, further improve the service life of ball bearing 1000.
Here, the structure type of 3 balls 0400 can be realized, the number of ball 0400 needed for ball bearing 1000 is greatly decreased
Amount, significantly reduce the manufacturing cost of ball bearing 1000.Meanwhile the quantity of ball 0400 is reduced, and also advantageously reduces dress
With difficulty, simplify assembly technology, further reduce the manufacturing cost of ball bearing 1000.
Preferably, under that loading condition, ball 0400 with 4 points of action modes contacted of bearing channel rollably to keep
In on bearing channel.
Specifically, the side of ball 0400 forms two-point contact, opposite side and the shape of bear inner ring grooved railway 0210 with outer ring raceway 0110
Into two-point contact, contacted so as to form at 4 points with bearing channel.
During by load effect, the effect of power occurs by four contact points between ball 0400 and bearing channel.Four
The form of point contact, make to occur to act on along the power of the axial direction of ball bearing 1000 between ball 0400 and bearing channel, can also send out
The raw power along the radial direction of ball bearing 1000 acts on, and ensures that ball bearing 1000 has and bears axial load and radial load simultaneously
Ability, further expand the application of ball bearing 1000.
Further preferably, the pressure angle α number ranges between ball 0400 and bearing channel are 40 °~50 °.
Specifically, pressure angle α refers to the angle between bearing pressure line and sagittal plane.Wherein, bearing pressure line refers to,
When with bearing outer ring 0100 load forces effect occurs for bearing inner race 0200, ball 0400 and bearing inner race 0200, bearing outer ring
Line between 0100 contact point, the effect of power are transmitted along pressure line.
When pressure angle α is between 40 °~50 °, the axial load of ball bearing 1000 is more balanced with radial load, makes
The bearing capacity of ball bearing 1000 further enhances.
Preferably, the circularity of bear inner ring grooved railway 0210 is not more than 5 microns.
Specifically, the circularity of bear inner ring grooved railway 0210 is an important quality index, directly affect bearing operating accuracy,
Stationarity and service life.
Wherein, the circularity of bear inner ring grooved railway 0210 is called roundness tolerance, refers to the close theory in cross section of bear inner ring grooved railway 0210
Round degree.Roundness tolerance belongs to form tolerance, and its tolerance range is the area between two concentric circles of semidiameter using tolerance value t
Domain.The numerical value of circularity is smaller, shows that the degree of the deviation theory of bear inner ring grooved railway 0210 circle is smaller, bear inner ring grooved railway 0210 is rounder and more smooth.
Bear inner ring grooved railway 0210 circularity be not more than 5 microns under conditions of, bearing channel is more round and smooth, make ball 0400 in
Rolling is more smoothly in bearing channel, and bearing channel surface does not have micromutation point, avoids that ball 0400 is caused a little to deteriorate
Evil.
Meanwhile have between ball 0400 and bearing channel and more preferably put contact condition, make on-way resistance smaller, a side
Face is beneficial to rotational energy caused by reducing on-way resistance and is lost, and saves energy and ensures rotary speed；On the other hand it is beneficial to avoid
Generation wedge angle collides and sends noise, is effectively reduced the noise of ball bearing 1000.
Preferably, the surface roughness of bear inner ring grooved railway 0210 is not more than 0.5 micron.
Specifically, surface roughness (surface roughness) refers to smaller spacing that finished surface has and small
The unevenness of peak valley.The distance between its two crest or two troughs (pitch of waves) very little (below 1 millimeter), it belongs to microcosmic geometry
Form error.Usually, surface roughness is smaller, then surface is more smooth.
Under conditions of the surface roughness of bear inner ring grooved railway 0210 is not more than 0.5 micron, the surface of bear inner ring grooved railway 0210 is smooth.
And then bearing channel surface is smooth, the damping action that the rolling process of ball 0400 is subject to is greatly reduced, is advantageous to improve ball
The rated speed of bearing 1000, ball bearing 1000 is set to be applied to high speed situation.
Meanwhile surface roughness is smaller, ensures that catastrophe point is not present in the surface of bear inner ring grooved railway 0210, avoid catastrophe point to ball
Cause the pitting damage of stress concentration in 0400 surface.
Preferably, the circularity of outer ring raceway 0110 is not more than 5 microns.
Specifically, the circularity of outer ring raceway 0110 is an important quality index, directly affect bearing operating accuracy,
Stationarity and service life.
As it was previously stated, being influenceed similar to the circularity of bear inner ring grooved railway 0210, it is not more than 5 microns in the circularity of bear inner ring grooved railway 0210
Under conditions of, bearing channel is more round and smooth, makes ball 0400 more smoothly in being rolled in bearing channel, and bearing channel surface is not
Have micromutation point, avoid causing pitting damage to ball 0400.
Preferably, the surface roughness of outer ring raceway 0110 is not more than 0.5 micron.
Specifically, under conditions of the surface roughness of outer ring raceway 0110 is not more than 0.5 micron, the table of outer ring raceway 0110
Face is smooth.And then bearing channel surface is smooth, the damping action that the rolling process of ball 0400 is subject to is greatly reduced, is advantageous to
The rated speed of ball bearing 1000 is improved, ball bearing 1000 is applied to high speed situation.
Meanwhile surface roughness is smaller, ensures that catastrophe point is not present in the surface of outer ring raceway 0110, avoid catastrophe point to ball
Cause the pitting damage of stress concentration in 0400 surface.
Preferably, retainer 0300 is provided with the pocket hole 0310 for being used for accommodating ball 0400, the both ends open in pocket hole 0310
Respectively for outer ring raceway 0110 and bear inner ring grooved railway 0210.
Specifically, ball 0400 is rollably held in pocket hole 0310.Both ends open of the ball 0400 from pocket hole 0310
Protrude from outside retainer 0300, be in contact under load effect with outer ring raceway 0110 and bear inner ring grooved railway 0210.
When ball 0400 is when operating is rolled in bearing channel, ball 0400 drives retainer 0300 by pocket hole 0310
Move simultaneously, retainer 0300 is rotated with the rolling of ball 0400 between bearing outer ring 0100 and bearing inner race 0200.
Further preferably, retainer 0300 is provided with 3 pocket holes 0310, is respectively used to accommodate 3 balls 0400.
Specifically, circumferencial direction of the pocket hole 0310 along ball bearing 1000 is uniformly distributed on retainer 0300, ensures 3
Ball 0400 is uniformly distributed.
Preferably, the bulb diameter deviation of ball 0400 is not more than 0.25 micron, and spherical abberation is not more than 0.25 micron.
Specifically, bulb diameter deviation refers to the deviation between the spherical diameter of ball 0400 and nominal diameter.Ball
0400 bulb diameter deviation is smaller, and the size that can effectively ensure that ball 0400 in the ideal range, further improves ball 0400
With the compatible degree of bearing channel, make stress between ball 0400 and bearing channel with motion state more preferably.
Spherical abberation is also known as sphericity, the i.e. degree of deviation between the spherical form of ball 0400 and perfect sphere.Ball 0400
Spherical abberation it is smaller, can effectively ensure that the spherical even more ideal of ball 0400, be not in that bounce is raised, make ball 0400 with
Stress between bearing channel more preferably, further reduces damping effect with motion state.
Preferably, the surface roughness of ball 0400 is not more than 0.02 micron.
Specifically, the surface roughness of ball 0400 is not more than 0.02 micron, ensures that the surface of ball 0400 is extremely smooth, from
And the damping action that the rolling process of ball 0400 is subject to is greatly reduced, be advantageous to improve the rated speed of ball bearing 1000,
Ball bearing 1000 is set to be applied to high speed situation.
Meanwhile surface roughness is smaller, ensures that catastrophe point is not present in the surface of ball 0400, avoid catastrophe point to ball 0400
Cause the pitting damage of stress concentration in surface.
In addition, catastrophe point is not present in the surface of ball 0400, ensure between ball 0400 and bearing channel definitely with 4 points
The form of contact and the effect of power occurs, so as to ensure the preferable load transmission between ball 0400 and bearing channel.
Preferably, bearing outer ring 0100 can be made up with bearing inner race 0200 of bearing steel, ceramics, plastics etc., retainer
0300 can be made up of plastics, light metal etc., and ball 0400 can be made up of bearing steel, ceramics, plastics etc..Wherein, light metal refers to
Density is less than 4.5 grams/cc of metal, such as beryllium, aluminium, magnesium, sodium, potassium, calcium, strontium.
Here, due to structural improvement, the making material of ball bearing 1000 is greatly expanded, and makes application scenario more horn of plenty.
In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, without
It is that therefore, other examples of exemplary embodiment can have different values as limitation.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the scope of the utility model.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection domain of utility model.Therefore, the scope of protection of the utility model should be determined by the appended claims.
Claims (10)
1. a kind of ball bearing, it is characterised in that including bearing outer ring, bearing inner race and retainer：
The bearing outer ring has outer ring raceway, and the bearing inner race has bear inner ring grooved railway, the outer ring raceway and the inner ring
The relative inclusion of raceway groove forms bearing channel；
The retainer is provided with 3 balls, and circumferencial direction of the ball along the ball bearing is uniformly distributed；
The ball is rollably held on the bearing channel, and the retainer is rotatably protected with the motion of the ball
It is held between the bearing outer ring and the bearing inner race；
There is clearance, the number range of the clearance is 3~30 microns between the ball and the bearing channel.
2. ball bearing according to claim 1, it is characterised in that under that loading condition, the ball with the axle
The action mode for holding 4 points of contacts of raceway groove is rollably held on the bearing channel.
3. ball bearing according to claim 2, it is characterised in that the pressure between the ball and the bearing channel
Angle number range is 40 °~50 °.
4. ball bearing according to claim 1, it is characterised in that the circularity of the bear inner ring grooved railway is not more than 5 microns.
5. ball bearing according to claim 1, it is characterised in that the surface roughness of the bear inner ring grooved railway is not more than
0.5 micron.
6. ball bearing according to claim 1, it is characterised in that the circularity of the outer ring raceway is not more than 5 microns.
7. ball bearing according to claim 1, it is characterised in that the surface roughness of the outer ring raceway is not more than
0.5 micron.
8. ball bearing according to claim 1, it is characterised in that the retainer, which is provided with, to be used to accommodate the ball
Pocket hole, the both ends open in the pocket hole is respectively for the outer ring raceway and the bear inner ring grooved railway.
9. ball bearing according to claim 1, it is characterised in that the bulb diameter deviation of the ball is micro- no more than 0.25
Rice, spherical abberation are not more than 0.25 micron.
10. ball bearing according to claim 1, it is characterised in that the surface roughness of the ball is not more than 0.02
Micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720347273.2U CN206626098U (en) | 2017-04-01 | 2017-04-01 | Ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720347273.2U CN206626098U (en) | 2017-04-01 | 2017-04-01 | Ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206626098U true CN206626098U (en) | 2017-11-10 |
Family
ID=60206464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720347273.2U Expired - Fee Related CN206626098U (en) | 2017-04-01 | 2017-04-01 | Ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206626098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107988668A (en) * | 2017-12-14 | 2018-05-04 | 新昌县蓝翔机械有限公司 | A kind of distribution false twisting machine |
-
2017
- 2017-04-01 CN CN201720347273.2U patent/CN206626098U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107988668A (en) * | 2017-12-14 | 2018-05-04 | 新昌县蓝翔机械有限公司 | A kind of distribution false twisting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 Termination date: 20180401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |