CN108999885B - A half-ring coupling type precision rolling bearing - Google Patents
A half-ring coupling type precision rolling bearing Download PDFInfo
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- CN108999885B CN108999885B CN201810805358.XA CN201810805358A CN108999885B CN 108999885 B CN108999885 B CN 108999885B CN 201810805358 A CN201810805358 A CN 201810805358A CN 108999885 B CN108999885 B CN 108999885B
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- ring
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- bearing
- inner ring
- outer ring
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- 238000005096 rolling process Methods 0.000 title claims abstract description 41
- 230000008878 coupling Effects 0.000 title claims abstract description 11
- 238000010168 coupling process Methods 0.000 title claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 11
- 210000001503 joint Anatomy 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
本发明公开了一种半环联接式精密滚动轴承，包括轴承内圈、轴承外圈、位于轴承内圈与轴承外圈之间的滚动体和保持架，轴承内圈由内圈半环a和内圈半环b联接形成，轴承外圈由外圈半环a和外圈半环b联接形成。本发明一种半环联接式精密滚动轴承安装和拆卸方便简单，轴承内圈和外圈的半环联接面能够相互贴合，实现联接面的自定位，使轴承内圈具有较高的滚道对接精度，还保证了内圈半环联接面具有较高的联接面联接刚度。
The invention discloses a half-ring coupling type precision rolling bearing, which comprises a bearing inner ring, a bearing outer ring, a rolling body and a cage located between the bearing inner ring and the bearing outer ring, and the bearing inner ring consists of an inner ring half ring a and an inner ring. The ring and half ring b are connected to form, and the outer ring of the bearing is formed by the connection of the outer ring half ring a and the outer ring half ring b. The half-ring coupling type precision rolling bearing of the present invention is convenient and simple to install and disassemble, the half-ring coupling surfaces of the inner ring and the outer ring of the bearing can fit each other, realize the self-positioning of the coupling surfaces, and make the inner ring of the bearing have a high raceway butt joint. The accuracy also ensures that the connecting surface of the inner ring half ring has a high connecting surface connection rigidity.
Description
Technical Field
The invention belongs to the field of mechanical structures, and particularly relates to a semi-ring connection type precise rolling bearing.
Background
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The bearings can be classified into rolling bearings and sliding bearings. Rolling bearings are generally composed of an outer ring, an inner ring, a rolling body and a retainer, and are classified into two types, i.e., ball bearings and roller bearings, according to the shape of the rolling body.
The inner ring and the outer ring of a common rolling bearing are both integral circular rings, when the bearing is installed, the inner ring of the bearing is generally required to be in interference fit with a shaft, so that the bearing is difficult to install and disassemble, a special installing and disassembling tool is required, and after the bearing is disassembled, the surfaces of the shaft and the inner hole of the bearing are subjected to strain in different degrees, so that the service life of the bearing and the related shaft is damaged. The bearing outer ring and the bearing seat hole are in clearance fit or excessive fit, and the problem of difficulty in mounting and dismounting exists due to small clearance.
In some mechanical structures requiring frequent installation and disassembly of the bearing, if the used bearing is in a semi-annular splicing structure, the disassembly and the assembly are convenient. The rolling bearing has lower contact rigidity than a sliding bearing because the rolling bodies are in point contact or line contact with the roller paths, is easy to vibrate and reduces the rotation precision. Therefore, if the rolling bearing adopting the half-ring connection mode is adopted, the higher connection rigidity and the higher raceway butting precision at the connection position are required to prevent the rolling body from impacting the raceway.
Disclosure of Invention
The invention aims to provide a semi-ring connection type precise rolling bearing, which solves the problem that the existing bearing is difficult to mount and dismount.
The invention adopts the technical scheme that a semi-ring connection type precise rolling bearing comprises a bearing inner ring, a bearing outer ring, a rolling body and a retainer, wherein the rolling body and the retainer are positioned between the bearing inner ring and the bearing outer ring, the bearing inner ring is formed by connecting an inner ring semi-ring a and an inner ring semi-ring b, and the bearing outer ring is formed by connecting an outer ring semi-ring a and an outer ring semi-ring b.
The present invention is also technically characterized in that,
the connecting surfaces of the inner ring semi-rings a and the inner ring semi-rings b are formed by four crossed quadrilateral planes, wherein the connecting surfaces of the inner ring semi-rings a are outwards protruded, and the connecting surfaces of the inner ring semi-rings b which are butted with the inner ring semi-rings a are inwards concave.
And the four quadrilateral planes on each connecting surface of the inner ring semi-ring a and the inner ring semi-ring b have the same size.
The connecting surfaces of the outer ring semi-rings a and the outer ring semi-rings b are formed by four crossed quadrilateral planes, wherein the connecting surface of the outer ring semi-rings a is outwards protruded, and the connecting surface of the outer ring semi-rings b which are butted with the outer ring semi-rings a is inwards concave.
And the four quadrilateral planes on each connecting surface of the outer ring semi-ring a and the outer ring semi-ring b are the same in size.
The inner ring semi-ring a and the inner ring semi-ring b are connected through screws, and the center lines of the screws are perpendicular to the axial line of the bearing.
The outer ring semi-ring a and the outer ring semi-ring b are connected through screws, and the center lines of the screws are perpendicular to the axial line of the bearing.
The rolling bodies are balls or rollers.
The retainer is a split retainer.
The invention has the advantages that the two semi-rings are respectively adopted to be connected to form the bearing inner ring and the bearing outer ring, so that the bearing is convenient to install and disassemble; the connecting surfaces of the bearing inner ring and the bearing outer ring semi-rings are formed by four crossed quadrilateral planes, one connecting surface of each semi-ring protrudes outwards, the connecting surface of the semi-ring which is connected with the semi-ring is inwards concave, the corresponding connecting surfaces on the two semi-rings can be mutually attached, the self-positioning of the connecting surfaces is realized, the bearing inner ring has higher raceway butt joint precision, and the connecting surface of the inner ring semi-ring is also ensured to have higher connecting surface connecting rigidity.
Drawings
FIG. 1 is a schematic view of the internal structure of a semi-ring coupled precision rolling bearing according to the present invention;
FIG. 2 is a schematic structural diagram of a half-ring coupling surface of a precision rolling bearing of the half-ring coupling type according to the present invention;
fig. 3 is a schematic view of the overall structure of a semi-ring coupled precision rolling bearing according to the present invention.
In the figure, 1 is a bearing inner ring, 2 is a rolling body, 3 is a bearing outer ring, 4 is an inner ring semi-ring a, 5 is an inner ring semi-ring b, 6 is an outer ring semi-ring a, 7 is an outer ring semi-ring b, 8 is a retainer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the following detailed description, but the present invention is not limited to these embodiments.
Referring to fig. 1, the precision rolling bearing of the invention comprises a bearing inner ring 1, a bearing outer ring 3, a rolling body 2 and a retainer 8, wherein the rolling body 2 and the retainer are positioned between the bearing inner ring and the bearing outer ring. The bearing inner ring 1 is formed by connecting an inner ring half ring a4 and an inner ring half ring b5 through four countersunk head screws a8, the connecting surfaces of the inner ring half ring a and the inner ring half ring b are respectively formed by four intersecting quadrilateral planes with the same size, the connecting surface of the inner ring half ring a protrudes outwards, the connecting surface of the inner ring half ring b which is butted with the inner ring half ring a is inwards concave (see figure 2), the quadrilateral planes on the connecting surfaces of the inner ring half rings can be mutually jointed with the corresponding quadrilateral planes, after the two inner ring half rings are connected and fixed into a whole through screws, the corresponding connecting surfaces on the two half rings are mutually jointed, the self-positioning of the connecting surfaces is realized, the bearing inner ring has higher raceway butting precision, and the connecting surface of the inner ring half rings is also ensured to have higher. Two step holes are formed in one end of the inner ring semi-ring a, a threaded hole is formed in one end of the inner ring semi-ring b corresponding to the step holes, the screw a is located inside the bearing inner ring 1, rotation of the bearing inner ring is not affected, and installation and disassembly of the bearing inner ring are facilitated.
The external connection surface of the bearing inner ring 1 is provided with a rolling element retainer 8, and the retainer 8 is a split type retainer and is convenient to mount and dismount; rolling bodies 2 are arranged in the holes of the retainer, and the rolling bodies are steel balls in the example; the outer side of the rolling body 2 is sleeved with a bearing outer ring 3, the bearing outer ring 3 is formed by connecting an outer ring semi-ring a6 and an outer ring semi-ring b7 through four countersunk screws, the connecting surfaces of the outer ring semi-ring a and the outer ring semi-ring b are formed by four intersecting quadrilateral planes with the same size, the connecting surface of the outer ring semi-ring a protrudes outwards, the connecting surface of the outer ring semi-ring b which is butted with the outer ring semi-ring a is inwards concave, the quadrilateral plane on the connecting surface of the outer ring semi-ring can be mutually attached to the corresponding quadrilateral plane, after the two outer ring semi-rings are fixed into a whole through the screws, the corresponding connecting surfaces on the two semi-rings are mutually attached, the self-positioning of the connecting surface is realized, the bearing outer ring has higher raceway butting precision. Two step holes are formed in one end of the outer ring semi-ring a, a threaded hole is formed in one end of the outer ring semi-ring b corresponding to the step holes, the screw is located inside the bearing outer ring 3, normal work of the bearing is not affected, and the bearing outer ring is convenient to mount and dismount.
When the semi-ring connection type precise rolling bearing is assembled, firstly, the bearing inner ring 1 is assembled, the inner ring semi-ring a4 and the inner ring semi-ring b5 are connected and fixed into a whole by using screws and are fastened, then the outer ring semi-ring a6 and the outer ring semi-ring b7 are connected by using screws but are not fastened, the bearing outer ring 3 is sleeved on the bearing inner ring 1, steel balls and discrete cages 8 are arranged at the joints of the semi-ring connection surfaces of the bearing outer ring 3 one by one, and finally, the outer ring semi-ring a6 and the outer ring semi-ring b7 are connected and fixed into a whole by using the screws and are fastened, so that the semi-ring connection type precise.
Claims (5)
1. A semi-ring connection type precision rolling bearing comprises a bearing inner ring (1), a bearing outer ring (3), a rolling body (2) and a retainer (8), wherein the rolling body (2) and the retainer are positioned between the bearing inner ring and the bearing outer ring, the precision rolling bearing is characterized in that the bearing inner ring (1) is formed by connecting an inner ring semi-ring a (4) and an inner ring semi-ring b (5), and the bearing outer ring (3) is formed by connecting an outer ring semi-ring a (6) and an outer ring semi-ring b (7); the connecting surfaces of the inner ring semi-ring a (4) and the inner ring semi-ring b (5) are formed by four crossed quadrilateral planes, wherein the connecting surface of the inner ring semi-ring a (4) is outwards convex, and the connecting surface of the inner ring semi-ring b (5) which is butted with the inner ring semi-ring a is inwards concave; the connecting surfaces of the outer ring semi-ring a (6) and the outer ring semi-ring b (7) are formed by four crossed quadrilateral planes, wherein the connecting surface of the outer ring semi-ring a (6) is outwards convex, and the connecting surface of the outer ring semi-ring b (7) which is butted with the outer ring semi-ring a is inwards concave; the inner ring semi-ring a (4) and the inner ring semi-ring b (5) are connected through a screw, and the central line of the screw is vertical to the axial line of the bearing; the outer ring semi-ring a (6) and the outer ring semi-ring b (7) are connected through screws, and the center lines of the screws are perpendicular to the axial line of the bearing.
2. The precision rolling bearing of claim 1, wherein the four quadrangular plane surfaces on each coupling surface of the inner ring half ring a (4) and the inner ring half ring b (5) are the same in size.
3. The precision rolling bearing of claim 1, wherein the four quadrangular planes on each coupling surface of the outer ring half ring a (6) and the outer ring half ring b are the same in size.
4. A precision rolling bearing of the semi-ring coupling type according to claim 1, characterized in that the rolling bodies (2) are balls or rollers.
5. A precision rolling bearing of the half-ring coupling type according to claim 1, characterized in that the cage (8) is a split cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805358.XA CN108999885B (en) | 2018-07-20 | 2018-07-20 | A half-ring coupling type precision rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805358.XA CN108999885B (en) | 2018-07-20 | 2018-07-20 | A half-ring coupling type precision rolling bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108999885A CN108999885A (en) | 2018-12-14 |
| CN108999885B true CN108999885B (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810805358.XA Active CN108999885B (en) | 2018-07-20 | 2018-07-20 | A half-ring coupling type precision rolling bearing |
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| Country | Link |
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| CN (1) | CN108999885B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022506A (en) * | 2019-12-04 | 2020-04-17 | 艾德斯汽车电机无锡有限公司 | Assembled bearing |
| GB2604357B (en) * | 2021-03-02 | 2023-07-12 | Cooper Roller Bearings Company Ltd | A split roller bearing |
| CN115030961B (en) * | 2022-07-25 | 2022-11-01 | 烟台智远机械有限公司 | Combined bearing pedestal |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260192Y (en) * | 1995-11-23 | 1997-08-20 | 北京人民轴承厂 | Split type bearing with cylinder roller |
| US8894292B2 (en) * | 2008-05-19 | 2014-11-25 | Jtekt Corporation | Split outer ring, split rolling bearing using the same ring and construction and method of mounting the same rolling bearing |
| JP2014101896A (en) * | 2012-11-16 | 2014-06-05 | Nsk Ltd | Rolling bearing |
| CN203784101U (en) * | 2014-03-28 | 2014-08-20 | 四川东轴轴承股份有限公司 | Outer ring positioning device for subdividing double-row cylindrical roller bearing |
| CN204477058U (en) * | 2015-02-02 | 2015-07-15 | 陈兆义 | A kind of split type cylinder rolling bearing |
| CN205823957U (en) * | 2016-07-15 | 2016-12-21 | 大连光扬轴承制造有限公司 | A kind of Internal and external cycle is without rib Split type bearing with cylinder roller |
| CN206280384U (en) * | 2016-12-15 | 2017-06-27 | 碎得机械(北京)有限公司 | A kind of dissection type deep groove ball bearing |
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| CN108999885A (en) | 2018-12-14 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20181214 Assignee: Wang Shijun Assignor: XI'AN University OF TECHNOLOGY Contract record no.: X2022980006269 Denomination of invention: A half ring connected precision rolling bearing Granted publication date: 20200331 License type: Exclusive License Record date: 20220524 |
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