CN206754188U - A kind of precision bearing axially stop block and precision bearing system - Google Patents
A kind of precision bearing axially stop block and precision bearing system Download PDFInfo
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- CN206754188U CN206754188U CN201720448601.8U CN201720448601U CN206754188U CN 206754188 U CN206754188 U CN 206754188U CN 201720448601 U CN201720448601 U CN 201720448601U CN 206754188 U CN206754188 U CN 206754188U
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Abstract
The utility model belongs to precision optical machinery field of engineering technology, and in particular to a kind of precision bearing axially stop block and a kind of precision bearing system.The precision bearing axially stop block includes gland, spherical pad and Ball faced nut trim ring, spherical pad includes first end face and second end face, first end face is the plane perpendicular to spherical pad center line, the second end face is the sphere that the centre of sphere crosses spherical pad center line, Ball faced nut trim ring includes end face, end face is the sphere that the centre of sphere crosses Ball faced nut trim ring center line, and the second end face of spherical pad and the end face of Ball faced nut trim ring are used cooperatively.It is mounted with the precision bearing system of precision bearing axially stop block, coordinated by spheric washer and Ball faced nut trim ring and compress bearing face, plain nut gland can effectively be avoided due to thread pitch and fabricate the problem of error causes bearing face deflection, and then improve the shafting precision of precision bearing composition.
Description
Technical field
The utility model belongs to precision optical machinery field of engineering technology, and in particular to a kind of precision bearing axially stop block and
Precision bearing system.
Background technology
Precision bearing system by main shaft, bearing and on main shaft some measurement and execution unit formed.The precision of shafting
Characteristic directly affects the precision characteristic of complete machine, as mechanized equipment develops to high accuracy, high-performance direction, to how to improve shafting
Precision proposes more acute challenge.
Shafting precision is mainly ensured by precision bearing, precision manufactureing and accurate integration techno logy.For accurate axle
For system, design, adjustment process will realize shafting precision prescribed by adjusting control bearing clearance, and clearance is adjusted
After must by bearing it is inside and outside circle to bearing axial limiting, to ensure the stability of shafting precision.
The inside and outside circle limit method of bearing is a lot, is mainly entered by the shaft shoulder and hole shoulder block, nut, interference set and gland etc.
Row axial limiting.The inside and outside circle axial limiting of bearing is made in bearing one end using the shaft shoulder and shell aperture shoulder block, and its is simple in construction, supporting
Precision is high, can bear very big load, thus application is quite varied.The other end is spacing using gland, and gland passes through pre- during design
Interference tolerance is stayed to realize that application is also quite varied, fastener of the nut as bearing axial limiting to bearing axial limiting, due to
Screw thread can bear larger axial load, and easy to adjust, therefore application is also very universal, however, by the use of plain nut as axially
Locating part, influenceed due to intrinsic fit clearance between screw thread be present, and by machining accuracy, it is often difficult to ensure nut end face
There is higher perpendicularity with axial line, bearing inner race outer face angle error occurs with nut end face, bearing is easily made after nut check
Deflection, it could even be possible to making bending shaft, these will all directly affect the running accuracy of axle.For high-speed, high precision shafting, these
Problem can all influence shafting precision, increase design cost and resetting difficulty.
The content of the invention
The utility model proposes a kind of precision bearing axially stop block, can effectively avoid above-mentioned prior art because general
Logical nut gland is due to thread pitch and fabricates the problem of error causes bearing face deflection.The utility model also proposed
A kind of precision bearing system for being mounted with above-mentioned precision bearing axially stop block, the precision bearing system precision is high, easily assembling.
Technical scheme provided by the utility model is：A kind of precision bearing axially stop block, including gland, its is special
Part is, in addition to spherical pad and Ball faced nut trim ring；
The spherical pad includes first end face and second end face；The first end face is perpendicular to spherical pad center line
Plane, the second end face is that the centre of sphere crosses the sphere of spherical pad center line；
The Ball faced nut trim ring includes the 3rd end face, and the 3rd end face is that the centre of sphere crosses Ball faced nut trim ring center line
Sphere；
The second end face of the spherical pad and the 3rd end face of Ball faced nut trim ring are used cooperatively.
The inner surface of the Ball faced nut trim ring is provided with screw thread.
Meanwhile the utility model additionally provides a kind of precision bearing system for including above-mentioned precision bearing axially stop block, its
Technical scheme is：A kind of precision bearing system, including rotating shaft, bearing block, angular contact ball bearing and bearing axially stop block, its is special
Part is,
The rotating shaft include active section, supporting section, spacing section；First shaft shoulder is formed between the active section and supporting section,
Second shaft shoulder is formed between the supporting section and spacing section；
One end of the bearing block is kept off provided with shell aperture；
The angular contact ball bearing is a pair, and this diagonal contact ball bearing is arranged in bearing block, the rotating shaft installation
In this diagonal contact ball bearing；An angular contact ball bearing close to rotating shaft active section is the first angular contact ball bearing, separately
One angular contact ball bearing is the second angular contact ball bearing；
The bearing axially stop block includes gland, spherical pad and Ball faced nut trim ring；
The spherical pad includes first end face and second end face；The first end face is perpendicular to spherical pad center line
Plane, the second end face is that the sphere centre of sphere crosses the center line of spherical pad；
The Ball faced nut trim ring includes the 3rd end face, and the 3rd end face is sphere, and its centre of sphere crosses Ball faced nut trim ring
Center line；
The inner ring to the first angular contact ball bearing and outer ring carry out axial limiting respectively for first shaft shoulder and shell aperture gear,
The outer ring of second angular contact ball bearing carries out axial limiting, the second end face and sphere spiral shell of the spherical pad by gland
3rd end face of female trim ring is coordinated, for carrying out axial limiting to the inner ring of second angular contact ball bearing；
The Ball faced nut trim ring is fixed on spacing section of rotating shaft by screw thread pair.
Further, above-mentioned spherical pad and the supporting section of rotating shaft can also use transition or gap to match somebody with somebody using being interference fitted
Close, but it is optimal to use interference fit.
Further, it is provided with spacer ring between above-mentioned first angular contact ball bearing and the second angular contact ball bearing.
Further, the side of above-mentioned spherical pad and Ball faced nut trim ring is shiny surface.
The utility model compared with prior art the advantages of be：
1st, coordinated by spherical pad and Ball faced nut trim ring and compress bearing face, can effectively avoid plain nut gland
The problem of bearing face deflection is caused due to thread pitch and processing and manufacturing error, and then improve the shafting essence of precision bearing composition
Degree.
2nd, spherical pad and Ball faced nut trim ring control pretension amount by screw thread, improve the controllability of pretightning force, machinery knot
Structure is simpler, compact, and adjustment is more convenient, reduces product cost, energy broader applications are at a high speed and in precision optical machinery shafting.
3rd, the apparatus structure is simple, and feasibility is strong.
Brief description of the drawings
Fig. 1 is shafting structure figure of the present utility model；
Fig. 2 is enlarged drawing at A in Fig. 1.
Wherein：1- bearing blocks；2- shell apertures are kept off；3- rotating shafts；4- active sections；The shaft shoulders of 41- first；5- supporting sections；51- second
The shaft shoulder；The angular contact ball bearings of 6- first；The angular contact ball bearings of 7- second；8- spherical pads；81- first end faces；The ends of 82- second
Face；9- Ball faced nut trim rings；The end faces of 91- the 3rd；Spacing section of 10-；11- glands；12- spacer rings.
Embodiment
The embodiment provided below in conjunction with the accompanying drawings is described in detail to the utility model：
Referring to Fig. 1 and Fig. 2, a kind of precision bearing axially stop block, including gland 11, spherical pad 8 and Ball faced nut
Trim ring 9.Spherical pad 8 includes first end face 81 and second end face 82, and first end face 81 is perpendicular to the center line of spherical pad 8
Plane, second end face 82 are sphere, and its centre of sphere crosses the center line of spherical pad 8, and Ball faced nut trim ring 9 includes the 3rd end face 91,
3rd end face 91 is sphere, and its centre of sphere crosses the center line of Ball faced nut trim ring 9, the second end face 82 and sphere spiral shell of spherical pad 8
3rd end face 91 of female trim ring 9 is used cooperatively, for carrying out axial limiting to bearing inner race, spherical pad 8 during use
First end face and bearing inner race end contact.The side of spherical pad 8 and Ball faced nut trim ring 9 is shiny surface.
Referring to Fig. 1, a kind of precision bearing system, including rotating shaft 3, bearing block 1, the and of the first angular contact ball bearing 6 of mounted in pairs
Second angular contact ball bearing 7, bearing axially stop block.
Rotating shaft 3 include active section 4, supporting section 5, spacing section 10；First shaft shoulder 41 is formed between active section 4 and supporting section 5,
Second shaft shoulder 51 is formed between supporting section 5 and spacing section 10.One end of bearing block 1 is provided with shell aperture gear 2.
First angular contact ball bearing 6 and the second angular contact ball bearing 7 are arranged in bearing block 1, angular contact ball bearing 6 and angle
Spacer ring 12 is provided between contact ball bearing 7, rotating shaft 3 is arranged in this diagonal contact ball bearing.
Bearing axially stop block includes gland 11, spherical pad 8 and Ball faced nut trim ring 9；Spherical pad 8 includes first
End face 81 and second end face 82, first end face 81 are the plane perpendicular to the center line of spherical pad 8, and the second end face 82 is ball
The heart crosses the sphere of the center line of spherical pad 8.Ball faced nut trim ring 9 includes the 3rd end face 91, and the 3rd end face 91 is that the centre of sphere crosses sphere
The sphere of the center line of nut trim ring 9.
The inner ring to the first angular contact ball bearing 6 and outer ring carry out axial limiting respectively for first shaft shoulder 41 and shell aperture gear 2,
The outer ring of second angular contact ball bearing 7 carries out axial limiting, the second end face and Ball faced nut pressure of spherical pad 8 by gland 11
3rd end face 91 of circle 9 is coordinated, for carrying out axial limiting to the inner ring of the second angular contact ball bearing 7.Gland 11 can lead to
Screw is crossed to be fixed on bearing block 1.Spherical pad 8 is installed on the supporting section 5 of rotating shaft 3, and fit system is using interference fit.Ball
Face nut trim ring 9 is installed on spacing section of rotating shaft 3, is connected using screw thread pair.Pass through spheric washer 8 and Ball faced nut trim ring 9
Coordinate and compress bearing face, can effectively avoid plain nut gland from causing bearing end due to thread pitch and processing and manufacturing error
The problem of face deflection, and then improve the shafting precision of precision bearing composition.
Claims (5)
1. a kind of precision bearing axially stop block, including gland (11), it is characterised in that：Also include spherical pad (8) and ball
Face nut trim ring (9)；
The spherical pad (8) includes first end face (81) and second end face (82)；The first end face (81) is perpendicular to ball
The plane of face pad (8) center line, the second end face (82) is sphere, and its centre of sphere crosses the center line of spherical pad (8)；
The Ball faced nut trim ring (9) includes the 3rd end face (91), and the 3rd end face (91) is sphere, and its centre of sphere crosses sphere spiral shell
The center line of female trim ring (9)；
The second end face (82) of the spherical pad (8) and the 3rd end face (91) of Ball faced nut trim ring (9) cooperate；
The inner surface of the Ball faced nut trim ring (9) is provided with screw thread.
2. a kind of precision bearing system, including rotating shaft (3), bearing block (1), angular contact ball bearing and bearing axially stop block, it is special
Sign is：
The rotating shaft (3) includes active section (4), supporting section (5), spacing section (10)；The active section (4) and supporting section (5) it
Between form first shaft shoulder (41), form second shaft shoulder (51) between the supporting section (5) and spacing section (10)；
One end of the bearing block (1) is provided with shell aperture gear (2)；
The angular contact ball bearing is a pair, and this diagonal contact ball bearing is arranged in bearing block, and the rotating shaft (3) is arranged on
In this diagonal contact ball bearing；An angular contact ball bearing close to rotating shaft active section is the first angular contact ball bearing (6), separately
One angular contact ball bearing is the second angular contact ball bearing (7)；
The bearing axially stop block includes gland (11), spherical pad (8) and Ball faced nut trim ring (9)；
The spherical pad (8) includes first end face (81) and second end face (82)；The first end face (81) is perpendicular to ball
The plane of face pad (8) center line, the second end face (82) is sphere, and its centre of sphere crosses the center line of spherical pad (8),
The Ball faced nut trim ring (9) includes the 3rd end face (91), and the 3rd end face (91) is sphere, and its centre of sphere crosses sphere spiral shell
The center line of female trim ring (9)；
The inner ring to the first angular contact ball bearing (6) and outer ring carry out axle respectively for first shaft shoulder (41) and shell aperture gear (2)
To spacing, the outer ring of second angular contact ball bearing (7) passes through gland (11) and carries out axial limiting, the spherical pad (8)
Second end face and the 3rd end face (91) of Ball faced nut trim ring (9) coordinated, to second angular contact ball bearing (7)
Inner ring carries out axial limiting；
The Ball faced nut trim ring (9) is fixed on spacing section (10) of rotating shaft (3) by screw thread pair.
A kind of 3. precision bearing system according to claim 2, it is characterised in that：The spherical pad (8) and the branch of rotating shaft (3)
Section (5) is supportted using interference fit.
A kind of 4. precision bearing system according to claim 3, it is characterised in that：First angular contact ball bearing (6) and the
Spacer ring (12) is provided between two angular contact ball bearings (7).
A kind of 5. precision bearing system according to claim 4, it is characterised in that：The spherical pad (8) and Ball faced nut pressure
The side for enclosing (9) is shiny surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720448601.8U CN206754188U (en) | 2017-04-26 | 2017-04-26 | A kind of precision bearing axially stop block and precision bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720448601.8U CN206754188U (en) | 2017-04-26 | 2017-04-26 | A kind of precision bearing axially stop block and precision bearing system |
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| Publication Number | Publication Date |
|---|---|
| CN206754188U true CN206754188U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720448601.8U Active CN206754188U (en) | 2017-04-26 | 2017-04-26 | A kind of precision bearing axially stop block and precision bearing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980216A (en) * | 2018-09-27 | 2018-12-11 | 杭州前进齿轮箱集团股份有限公司 | A kind of tapered roller bearing for Gear Planet Transmission is axially negative to swim clearance adjustment apparatus and configuration method |
| CN109210075A (en) * | 2018-09-03 | 2019-01-15 | 福建龙溪轴承(集团)股份有限公司 | A kind of oscillating bearing structure that can quickly adjust clearance |
| CN112217335A (en) * | 2019-07-10 | 2021-01-12 | 九江精密测试技术研究所 | Compact type accurate driving shaft system with limiting function |
-
2017
- 2017-04-26 CN CN201720448601.8U patent/CN206754188U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210075A (en) * | 2018-09-03 | 2019-01-15 | 福建龙溪轴承(集团)股份有限公司 | A kind of oscillating bearing structure that can quickly adjust clearance |
| CN108980216A (en) * | 2018-09-27 | 2018-12-11 | 杭州前进齿轮箱集团股份有限公司 | A kind of tapered roller bearing for Gear Planet Transmission is axially negative to swim clearance adjustment apparatus and configuration method |
| CN112217335A (en) * | 2019-07-10 | 2021-01-12 | 九江精密测试技术研究所 | Compact type accurate driving shaft system with limiting function |
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