CN203308899U - High-speed precision combination bearing - Google Patents
High-speed precision combination bearing Download PDFInfo
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- CN203308899U CN203308899U CN2013202407780U CN201320240778U CN203308899U CN 203308899 U CN203308899 U CN 203308899U CN 2013202407780 U CN2013202407780 U CN 2013202407780U CN 201320240778 U CN201320240778 U CN 201320240778U CN 203308899 U CN203308899 U CN 203308899U
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- ring body
- cylindrical surface
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- outer ring
- inner ring
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Abstract
The utility model relates to a high-speed precision combination bearing. A left inner ring body and a right inner ring body are arranged in an outer ring body; a clearance is formed between the right end surface of the left inner ring body and the left end surface of the right inner ring body; the left end surface of the left inner ring body is protruded out of the left end surface of the outer ring body by a certain distance; the right end surface of the right inner ring body is protruded out of the right end surface of the outer ring body by a certain distance; rolling bodies and retaining frames are respectively arranged between the outer ring body and the left inner ring body and between the outer ring body and the right inner ring body; dustproof covers are arranged at the left and right ends of an inner circle of the outer ring body. The high-speed precision combination bearing has the advantages of high rigidity, convenience for installation, high precision, controllability in product quality, and the like.
Description
Technical field
The utility model relates to a kind of bearing, especially a kind of high speed and precision combination bearing.
Background technique
At present, high-speed bearing the time is all generally that the mode combined is used in application, and the mode of its combination is generally two bearings and is used in combination by back-to-back mode (DB) or aspectant mode (DF) or a suitable mode (DT).Back-to-back combination (DB) can be born the axial load of radial load and both direction, because point of action distance is larger, to have the moment load to make used time rigidity very high.At present, back-to-back mode combines (DB) and is most widely used in the precision optical machinery industry.Due to the product that is high-speed, high precision, very high to the bearing requirement of two cover combinations, the bearing outside diameter size that requires two covers to combine, the play of interior hole dimension can not surpass 1/3 of tolerance.Because only 4um is to 5um for the product tolerance of P4 level, then will to compress tolerance be exactly that to require two lassos are identical sizes basically.Technique is difficult to assurance, and the while user is due to the difference of assembly technology in installation process, and two cover bearings assemble simultaneously also and can produce the assembling defect.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of good rigidly, easy for installation, precision is higher, the more manageable high speed and precision combination bearing of quality of product.
The technological scheme provided according to the utility model, described high speed and precision combination bearing, it comprises outer ring body, the left side inner ring body, the right side inner ring body, retainer, rolling element and dust cover, in outer ring body, be provided with left side inner ring body and right side inner ring body, between the right side of left side inner ring body and the left side of right side inner ring body, there is gap, left side one segment distance of the outstanding outer ring body in left side of left side inner ring body, right side one segment distance of the outstanding outer ring body in the right side of right side inner ring body, between outer ring body and left side inner ring body and between outer ring body and right side inner ring body, be equipped with rolling element and retainer, in the inner circle left part of outer ring body and the inner circle right part of outer ring body, be provided with dust cover,
Inner circle stage casing at described outer ring body is provided with the stage casing inner cylindrical surface, left section of the inner circle of outer ring body, be provided with left section inner cylindrical surface, right section of the inner circle of outer ring body, be provided with right section inner cylindrical surface, the diameter of left section inner cylindrical surface is greater than the diameter of stage casing inner cylindrical surface, the diameter of right section inner cylindrical surface is greater than the diameter of stage casing inner cylindrical surface, the right part of left section inner cylindrical surface is connected by raceway in left side with the left part of stage casing inner cylindrical surface, the right part of stage casing inner cylindrical surface is connected by raceway in right side with the left part of right section inner cylindrical surface, the inner circle of the outer ring body on the left of left section inner cylindrical surface is provided with the first seal groove, inner circle at the outer ring body on right section inner cylindrical surface right side is provided with the second seal groove, in the axial cross section of outer ring body, in described left side, the right raceway in raceway and right side is one section circular arc,
Raceway outside the cylindrical stage casing of described left side inner ring body is provided with left side, left section of the cylindrical of left side inner ring body, be provided with left section the first external cylindrical surface, right section of the cylindrical of left side inner ring body, be provided with right section the first external cylindrical surface, the diameter of right section the first external cylindrical surface is less than the diameter of left section the first external cylindrical surface, between left section the first external cylindrical surface and right section the first external cylindrical surface, join by raceway outside left side, in the axial cross section of left side inner ring body, outside left side, raceway is one section circular arc;
Cylindrical stage casing at described right side inner ring body is provided with raceway outside right side, left section of the cylindrical of right side inner ring body, be provided with left section the second external cylindrical surface, right section of the cylindrical of right side inner ring body, be provided with right section the second external cylindrical surface, the diameter of right section the second external cylindrical surface is greater than the diameter of left section the second external cylindrical surface, between left section the second external cylindrical surface and right section the second external cylindrical surface, join by raceway outside right side, in the axial cross section of right side inner ring body, outside right side, raceway is one section circular arc;
On described retainer, offer the pocket hole, the pocket hole is the fillet rectangular, the length direction in pocket hole is along the circumferential setting of retainer, the width direction in pocket hole is along the axial direction setting of retainer, on the cylindrical of the retainer of pocket hole site, offer the retainer oil storage tank along its circumferencial direction, the width of retainer oil storage tank is greater than the width in pocket hole.
The equal diameters of described left section inner cylindrical surface and right section inner cylindrical surface.
Circle radius is greater than circle radius in the outer ring body of left section inner cylindrical surface position in the outer ring body of the first seal groove notch position; Circle radius is greater than circle radius in the outer ring body of right section inner cylindrical surface position in the outer ring body of the second seal groove notch position.
In near raceway in the left side of left section inner cylindrical surface position, circumferentially offer the left side oil storage tank along it; In near raceway in the right side of right section inner cylindrical surface position, circumferentially offer the right side oil storage tank along it.
Two ends on corresponding pocket hole width direction offer oil guide slot along the circumferencial direction of retainer.
The advantage such as the utlity model has good rigidly, easy for installation, precision is higher with quality of product is more easy to control.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is one of structural representation of outer ring body in the utility model.
Fig. 3 be outer ring body in the utility model structural representation two.
Fig. 4 is the structural representation of left side inner ring body in the utility model.
Fig. 5 is the structural representation of right side inner ring body in the utility model.
Fig. 6 is the structural representation of retainer in the utility model.
Fig. 7 is the A-A sectional view of Fig. 6.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: this high speed and precision combination bearing, it comprises outer ring body 1, left side inner ring body 2, right side inner ring body 3, retainer 4, rolling element 5 and dust cover 6, in outer ring body 1, be provided with left side inner ring body 2 and right side inner ring body 3, between the right side of left side inner ring body 2 and the left side of right side inner ring body 3, there is gap, left side one segment distance of the outstanding outer ring body 1 in left side of left side inner ring body 2, right side one segment distance of the outstanding outer ring body 1 in the right side of right side inner ring body 3, between outer ring body 1 and left side inner ring body 2 and between outer ring body 1 and right side inner ring body 3, be equipped with rolling element 5 and retainer 4, in the inner circle left part of outer ring body 1 and the inner circle right part of outer ring body 1, be provided with dust cover 6,
Inner circle stage casing at described outer ring body 1 is provided with stage casing inner cylindrical surface 1.1, left section of the inner circle of outer ring body 1, be provided with left section inner cylindrical surface 1.2, right section of the inner circle of outer ring body 1, be provided with right section inner cylindrical surface 1.3, the diameter of left section inner cylindrical surface 1.2 is greater than the diameter of stage casing inner cylindrical surface 1.1, the diameter of right section inner cylindrical surface 1.3 is greater than the diameter of stage casing inner cylindrical surface 1.1, the right part of left section inner cylindrical surface 1.2 is connected by raceway in left side 1.4 with the left part of stage casing inner cylindrical surface 1.1, the right part of stage casing inner cylindrical surface 1.1 is connected by raceway in right side 1.5 with the left part of right section inner cylindrical surface 1.3, inner circle at the outer ring body 1 in left section inner cylindrical surface 1.2 left sides is provided with the first seal groove 1.7, inner circle at the outer ring body 1 on right section inner cylindrical surface 1.3 right sides is provided with the second seal groove 1.8, in the axial cross section of outer ring body 1, in described left side, raceway 1.4 is one section circular arc with the right raceway 1.5 in right side,
Raceway 2.1 outside the cylindrical stage casing of described left side inner ring body 2 is provided with left side, left section of the cylindrical of left side inner ring body 2, be provided with left section the first external cylindrical surface 2.2, right section of the cylindrical of left side inner ring body 2, be provided with right section the first external cylindrical surface 2.3, the diameter of right section the first external cylindrical surface 2.3 is less than the diameter of left section the first external cylindrical surface 2.2, between left section the first external cylindrical surface 2.2 and right section the first external cylindrical surface 2.3, join by raceway outside left side 2.1, in the axial cross section of left side inner ring body 2, outside left side, raceway 2.1 is one section circular arc;
In the cylindrical stage casing of described right side inner ring body 3, be provided with raceway 3.1 outside right side, left section of the cylindrical of right side inner ring body 3, be provided with left section the second external cylindrical surface 3.2, right section of the cylindrical of right side inner ring body 3, be provided with right section the second external cylindrical surface 3.3, the diameter of right section the second external cylindrical surface 3.3 is greater than the diameter of left section the second external cylindrical surface 3.2, between left section the second external cylindrical surface 3.2 and right section the second external cylindrical surface 3.3, join by raceway outside right side 3.1, in the axial cross section of right side inner ring body 3, outside right side, raceway 3.1 is one section circular arc;
On described retainer 4, offer pocket hole 4.1, pocket hole 4.1 is the fillet rectangular, the length direction in pocket hole 4.1 is along the circumferential setting of retainer 4, the width direction in pocket hole 4.1 is along the axial direction setting of retainer 4, on the cylindrical of the retainer 4 of 4.1 positions, pocket hole, offer retainer oil storage tank 4.2 along its circumferencial direction, the width of retainer oil storage tank 4.2 is greater than the width in pocket hole 4.1.
The equal diameters of described left section inner cylindrical surface 1.2 and right section inner cylindrical surface 1.3.
At the interior circle radius of outer ring body 1 of the first seal groove 1.7 notch positions, be greater than the interior circle radius of outer ring body 1 of left section inner cylindrical surface 1.2 positions; At the interior circle radius of outer ring body 1 of the second seal groove 1.8 notch positions, be greater than the interior circle radius of outer ring body 1 of right section inner cylindrical surface 1.3 positions.
As shown in Figure 3, near raceway 1.4 in the left side of left section inner cylindrical surface 1.2 positions, circumferentially offer left side oil storage tank 1.9 along it; In near raceway 1.5 in the right side of right section inner cylindrical surface 1.3 positions, circumferentially offer right side oil storage tank 1.10 along it.
Two ends on 4.1 width directions of corresponding pocket hole offer oil guide slot 4.3 along the circumferencial direction of retainer 1.
In corresponding pocket hole 4.1, be positioned at the circumferencial direction along retainer body 4 on the trough floor of oil storage tank 4.2 at two end part of the diameter on retainer body 4 axial directions and offer oil guide slot 4.3, like this, increased the space that stores grease, during work, grease in outer ring raceway flows into the surface of rolling element by oil storage tank 4.2, oil guide slot 4.3 places, thereby improved the lubrication effect of bearing, improved the working life of bearing.
When making retainer, the cylindrical of retainer will increase, and the inner circle of retainer will be dwindled, and is conducive to increase the wall thickness of retainer.
The bearing that the utility model forms two former outer rings, two inner rings makes the bearing of an outer ring and two inner rings into, and not only structure is simpler, and the rigidity of bearing also improved, and obviously installation has also facilitated.
Bearing of the present utility model is that becoming one bearing is combined in the outer ring of former single-row high-speed high-precision angular contact bearing, bearing of the present utility model has an outer ring body, two inner ring bodies, two retainers (material is fabroil or nylon or PEEK), rolling element is that (quantity is some for ball, material is GCr15 steel ball or N3Si4 ceramic ball), two seal rings, inside is marked with high speed grease, two inner ring bodies, rolling element, after retainer and outer ring body assembling, a little gap is arranged between the right side of left side inner ring body 2 and the left side of right side inner ring body 3, when bearing has in application process, after the inner ring body both sides apply axial preload, gap on the left of making between the left side of the right side of inner ring body 2 and right side inner ring body 3 is compressed to zero, therefore the rigidity of bearing increases.Gap between the right side of left side inner ring body 2 and the left side of right side inner ring body 3 is larger, preload is larger, rigidity is higher, but can descend the working life of bearing, therefore, gap between the right side of left side inner ring body 2 and the left side of right side inner ring body 3 is definite according to user's service condition, can not be too large, and can not be too little.The main feature of the utility model bearing is: user installation is convenient, and product rigidity is better than two cover bearing combinations, and accuracy of manufacturing and quality are easy to control.
Claims (5)
1. high speed and precision combination bearing, it is characterized in that: it comprises outer ring body (1), left side inner ring body (2), right side inner ring body (3), retainer (4), rolling element (5) and dust cover (6), in outer ring body (1), be provided with left side inner ring body (2) and right side inner ring body (3), between the right side of left side inner ring body (2) and the left side of right side inner ring body (3), there is gap, left side one segment distance of the outstanding outer ring body (1) in the left side of left side inner ring body (2), right side one segment distance of the outstanding outer ring body (1) in the right side of right side inner ring body (3), between outer ring body (1) and left side inner ring body (2) and between outer ring body (1) and right side inner ring body (3), be equipped with rolling element (5) and retainer (4), in the inner circle left part of outer ring body (1) and the inner circle right part of outer ring body (1), be provided with dust cover (6),
In the inner circle stage casing of described outer ring body (1), be provided with stage casing inner cylindrical surface (1.1), left section of the inner circle of outer ring body (1), be provided with left section inner cylindrical surface (1.2), right section of the inner circle of outer ring body (1), be provided with right section inner cylindrical surface (1.3), the diameter of left section inner cylindrical surface (1.2) is greater than the diameter of stage casing inner cylindrical surface (1.1), the diameter of right section inner cylindrical surface (1.3) is greater than the diameter of stage casing inner cylindrical surface (1.1), the right part of left section inner cylindrical surface (1.2) is connected by raceway in left side (1.4) with the left part of stage casing inner cylindrical surface (1.1), the right part of stage casing inner cylindrical surface (1.1) is connected by raceway in right side (1.5) with the left part of right section inner cylindrical surface (1.3), the inner circle of the outer ring body (1) on the left of left section inner cylindrical surface (1.2) is provided with the first seal groove (1.7), inner circle at the outer ring body (1) on right section inner cylindrical surface (1.3) right side is provided with the second seal groove (1.8), in the axial cross section of outer ring body (1), raceway in described left side (1.4) is one section circular arc with the right raceway in right side (1.5),
Raceway (2.1) outside the cylindrical stage casing of described left side inner ring body (2) is provided with left side, left section of the cylindrical of left side inner ring body (2), be provided with left section the first external cylindrical surface (2.2), right section of the cylindrical of left side inner ring body (2), be provided with right section the first external cylindrical surface (2.3), the diameter of right section the first external cylindrical surface (2.3) is less than the diameter of left section the first external cylindrical surface (2.2), between left section the first external cylindrical surface (2.2) and right section the first external cylindrical surface (2.3), join by raceway outside left side (2.1), in the axial cross section of left side inner ring body (2), the outer raceway in left side (2.1) is one section circular arc,
In the cylindrical stage casing of described right side inner ring body (3), be provided with raceway outside right side (3.1), left section of the cylindrical of right side inner ring body (3), be provided with left section the second external cylindrical surface (3.2), right section of the cylindrical of right side inner ring body (3), be provided with right section the second external cylindrical surface (3.3), the diameter of right section the second external cylindrical surface (3.3) is greater than the diameter of left section the second external cylindrical surface (3.2), between left section the second external cylindrical surface (3.2) and right section the second external cylindrical surface (3.3), join by raceway outside right side (3.1), in the axial cross section of right side inner ring body (3), raceway outside right side (3.1) is one section circular arc,
On described retainer (4), offer pocket hole (4.1), pocket hole (4.1) is the fillet rectangular, the length direction in pocket hole (4.1) is along the circumferential setting of retainer (4), the width direction in pocket hole (4.1) is along the axial direction setting of retainer (4), on the cylindrical of the retainer (4) of position, pocket hole (4.1), offer retainer oil storage tank (4.2) along its circumferencial direction, the width of retainer oil storage tank (4.2) is greater than the width of pocket hole (4.1).
2. high speed and precision combination bearing as claimed in claim 1, is characterized in that: the equal diameters of described left section inner cylindrical surface (1.2) and right section inner cylindrical surface (1.3).
3. high speed and precision combination bearing as claimed in claim 1 is characterized in that: circle radius is greater than circle radius in the outer ring body (1) of left section inner cylindrical surface (1.2) position in the outer ring body (1) of the first seal groove (1.7) notch position; Circle radius is greater than circle radius in the outer ring body (1) of right section inner cylindrical surface (1.3) position in the outer ring body (1) of the second seal groove (1.8) notch position.
4. high speed and precision combination bearing as claimed in claim 1, is characterized in that: in raceway (1.4), circumferentially offer left side oil storage tank (1.9) along it in the left side near left section inner cylindrical surface (1.2) position; In the right side near right section inner cylindrical surface (1.3) position, along it, circumferentially offer right side oil storage tank (1.10) in raceway (1.5).
5. high speed and precision combination bearing as claimed in claim 1, it is characterized in that: the two ends on the width direction of corresponding pocket hole (4.1) offer oil guide slot (4.3) along the circumferencial direction of retainer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202407780U CN203308899U (en) | 2013-05-06 | 2013-05-06 | High-speed precision combination bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202407780U CN203308899U (en) | 2013-05-06 | 2013-05-06 | High-speed precision combination bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308899U true CN203308899U (en) | 2013-11-27 |
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ID=49615112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202407780U Expired - Fee Related CN203308899U (en) | 2013-05-06 | 2013-05-06 | High-speed precision combination bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216524A (en) * | 2013-05-06 | 2013-07-24 | 无锡市第二轴承有限公司 | High-speed precise combined bearing |
-
2013
- 2013-05-06 CN CN2013202407780U patent/CN203308899U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216524A (en) * | 2013-05-06 | 2013-07-24 | 无锡市第二轴承有限公司 | High-speed precise combined bearing |
| CN103216524B (en) * | 2013-05-06 | 2016-06-29 | 无锡市第二轴承有限公司 | High speed and precision combination bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20170506 |