CN205298979U - Precise rotating platform vertical axis - Google Patents
Precise rotating platform vertical axis Download PDFInfo
- Publication number
- CN205298979U CN205298979U CN201521050405.2U CN201521050405U CN205298979U CN 205298979 U CN205298979 U CN 205298979U CN 201521050405 U CN201521050405 U CN 201521050405U CN 205298979 U CN205298979 U CN 205298979U
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- CN
- China
- Prior art keywords
- ball bearing
- contact ball
- angular contact
- rotation axle
- bearing
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a precise rotating platform vertical axis, including objective table, azimuthal rotation axle, angular contact ball bearing, thrust ball bearing and position fixation cabinet, azimuthal rotation axle and angular contact ball bearing all set up in position fixation cabinet, the upper end of azimuthal rotation axle is supported the objective table, angular contact ball bearing is a pair of, this a pair of angular contact ball bearing back -to -back mounted in the both ends of azimuthal rotation axle, the angular contact ball bearing who lies in the epaxial end of azimuthal rotation is an angular contact ball bearing, and the angular contact ball bearing who lies in azimuthal rotation axle lower extreme is the 2nd angular contact ball bearing, it is nested to be equipped with the bearing installation between an angular contact ball bearing and the position fixation cabinet. The utility model provides the high running accuracy of rotary shafting increases the rigidity of bearing combination, reduces the axial and diameter runout volume that support, reduces the bobbing machine noise of bearing portion, improves the rationality that the inside load of bearing distributes and the life of bearing, the play of elimination bearing.
Description
Technical field
This utility model belongs to precision optics application mechanical equipment technical field, relates to a kind of precise rotating platform vertical shaft series, can be applicable to precision optics application mechanical equipment technical field or other similar plant equipment.
Background technology
The basic demand of precision optical machinery axle system and type are in many precision optical machineries, for instance optical spectroscopic is thoroughly, in the precision machinery instrument equipment such as theodolite, clinometer, require more and more higher to its main shaft running accuracy.
The precision of main shaft system it is critical only that the design of bearing type selecting and combination. In many plant equipment, such as high precision machine tool main shaft, warp is shafting structure frequently with angular contact ball bearing or bearing group cooperation, in order to improve the running accuracy of rotary axis system, increase the rigidity of bearing combination, reduce the axially and radially jerk value supported, reduce the bobbing machine noise of bearing portion, improve the reasonability of Bearing inner power load distributing and the service life of bearing, the play of bearing should be eliminated, generally adopt pre-tension method to eliminate the play of bearing.
Fig. 1 gives a kind of turntable shaft architecture composition form the more commonly used at present. The pivot angle precision of Fig. 1 center shafting is mainly by the angular contact ball bearing of a pair back-to-back installation, by adjusting the difference in height of inside and outside bearing internal external circle distance collar to reach preloaded bearing, improve the purpose of shafting precision, in order to increase the bearing capacity of turntable shaft system, the thrust ball bearing that is rotated through of vertical shaft series realizes. But the angular contact ball bearing of a pair combination can bear radial load and can bear again certain axial load, the bottom surface of orientation rotation axle is connected with load-carrying ring on thrust ball bearing in such an embodiment, simultaneously, the pre-stressed joint in outer ring of the inner ring boss of orientation rotation axle and angular contact ball bearing, so in assembling process of being everlasting, location occurred, namely the bearing member of vertical shaft series is not unique, affects the stability of axle system. It addition, in order to avoid there is location in this structure, it is often necessary to part is carried out reconditioning in assembling process, and assembly process process is poor.
Utility model content
In order to overcome the deficiencies in the prior art, this utility model provides a kind of precision precise rotating platform vertical shaft series high, easily assembling.The technical solution of the utility model is as follows:
A kind of precise rotating platform vertical shaft series, including object stage, orientation rotation axle, angular contact ball bearing, thrust ball bearing and orientation static housing, it is characterized in that
Described orientation rotation axle and angular contact ball bearing are arranged in orientation static housing;
The upper end of orientation rotation axle supports described object stage;
Described angular contact ball bearing is a pair, the two ends of the back-to-back installation position rotating shaft of this diagonal angle contact ball bearing; The angular contact ball bearing being positioned at orientation rotation axle upper end is the first angular contact ball bearing, and the angular contact ball bearing being positioned at orientation rotation axle lower end is the second angular contact ball bearing;
It is provided with bearing between first angular contact ball bearing with orientation static housing and installs nested, the periphery of the second angular contact ball bearing and orientation static housing contact internal walls;
Described thrust ball bearing is double-direction thrust ball bearing, including upper shaft carrier ring, lower bearing ring and the axis carrier ring that is arranged between upper shaft carrier ring and lower bearing ring; Thrust ball bearing is socketed on orientation rotation axle, between pair of horns contact ball bearing;
Being provided with first annular step in orientation static housing, described lower bearing ring is pressed on described first annular step, and upper shaft carrier ring is installed nesting by described bearing and compressed;
The upper/lower terminal of described orientation rotation axle is respectively sleeved on locking member; The locking member being positioned at orientation rotation axle upper end is arranged on above the first angular contact ball bearing, and the locking member being positioned at orientation rotation axle lower end is arranged on below the second angular contact ball bearing, and locking member is used for compressing corresponding contact ball bearing inner race; By adjusting the end-play of locking member adjustable angular contact ball bearing, thus reaching to adjust the purpose of shafting precision.
It is positioned on the orientation rotation axle of below axis carrier ring and is cased with axle sleeve.
Be positioned at more than axis carrier ring orientation rotation axle external diameter more than, be positioned at the external diameter of the orientation rotation axle of below the axis carrier ring of thrust ball bearing.
The bottom of orientation static housing is fixed on base.
Above-mentioned bearing is installed nested inwall and is provided with the second ring-shaped step, and the first angular contact ball bearing drops on the second ring-shaped step.
The internal diameter of the orientation static housing between thrust ball bearing and the second angular contact ball bearing is R1, and the adjacent casing internal diameter in the second angular contact ball bearing periphery is that R2, R1 are more than R2.
The bottom of orientation rotation axle is provided with baffle plate, and the external diameter of baffle plate is more than the external diameter of orientation rotation axle, and baffle plate is used for fixed hub, i.e. restriction axle sleeve axial displacement.
Above-mentioned locking member is nut.
This utility model has following technical effect that
1. this utility model improves the running accuracy of rotary axis system, increase the rigidity of bearing combination, reduce the axially and radially jerk value supported, reduce the bobbing machine noise of bearing portion, improve the reasonability of Bearing inner power load distributing and the service life of bearing, eliminate the play of bearing.
2. thrust ball bearing of the present utility model adopts double-direction thrust ball bearing, it is possible to bear the axial load of both direction, and bearing capacity is big;
3. thrust ball bearing of the present utility model is between pair of horns contact ball bearing, can be prevented effectively from the generation of positioning scenarios, and increase shafting stability, and improve shafting precision;
4. realizing angular contact ball bearing pretightning force, simple in construction by adjustment pre-load nut, reliably, processing and manufacturing and assembly process process are good;
Accompanying drawing explanation
Fig. 1 is existing shafting structure figure.
Fig. 2 is this utility model shafting structure figure.
Accompanying drawing labelling:
In Fig. 1,1-object stage; 2-orientation rotation axle; 3-bearing outer ring baffle plate; 4-inner ring baffle plate; 5-angular contact ball bearing; 6-outer ring distance collar; 7-inner ring distance collar; 8-thrust ball bearing; 9-side is fixing axle; 10-casing.
In Fig. 2,11-object stage; 21-orientation rotation axle; 31-angular contact ball bearing; Nesting installed by 41-bearing; 51-thrust ball bearing; 61-orientation static housing; 71-axle sleeve; 81-nut; 91-baffle plate; 101-base.
Detailed description of the invention
As in figure 2 it is shown, this utility model provides a kind of precise rotating platform vertical shaft series, including object stage 11, orientation rotation axle 21, angular contact ball bearing 31, thrust ball bearing 51 and orientation static housing 61,
Orientation rotation axle and angular contact ball bearing are arranged in orientation static housing; The upper end of orientation rotation axle supports object stage 11;
Angular contact ball bearing is a pair, the back-to-back two ends being installed on orientation rotation axle of this diagonal angle contact ball bearing; The angular contact ball bearing being positioned at orientation rotation axle upper end is the first angular contact ball bearing, and the angular contact ball bearing being positioned at orientation rotation axle lower end is the second angular contact ball bearing;
It is provided with bearing between first angular contact ball bearing with orientation static housing and installs nested, the periphery of the second angular contact ball bearing and orientation static housing contact internal walls;
Thrust ball bearing is double-direction thrust ball bearing, including upper shaft carrier ring, lower bearing ring and the axis carrier ring that is arranged between upper shaft carrier ring and lower bearing ring; Thrust ball bearing is socketed on orientation rotation axle, between pair of horns contact ball bearing;
Being provided with first annular step in orientation static housing, described lower bearing ring is pressed on described first annular step, and upper shaft carrier ring is installed nesting by described bearing and compressed;
The upper/lower terminal of orientation rotation axle is respectively sleeved on locking member; The locking member being positioned at orientation rotation axle upper end is arranged on above the first angular contact ball bearing, and the locking member being positioned at orientation rotation axle lower end is arranged on below the second angular contact ball bearing, and locking member is used for compressing corresponding contact ball bearing inner race. Locking member can adopt nut 81. By controlling the screw-in depth of nut, shaft applies pretightning force, namely regulates the play of angular contact ball bearing, reaches to regulate the purpose of shafting precision.
It is positioned on the orientation rotation axle of below described axis carrier ring and is cased with axle sleeve; Be positioned at more than axis carrier ring orientation rotation axle external diameter more than, be positioned at the external diameter of the orientation rotation axle of below the axis carrier ring of thrust ball bearing; Axle sleeve can have the effect withstanding axis carrier ring, and this structure fixes the axial of thrust ball bearing
The bottom of orientation static housing is fixed on base 101.
Bearing is installed nested inwall and is provided with the second ring-shaped step, and the first angular contact ball bearing drops on the second ring-shaped step.
The internal diameter of the orientation static housing between thrust ball bearing and the second angular contact ball bearing is R1, and the adjacent casing internal diameter in the second angular contact ball bearing periphery is that R2, R1 are more than R2.
The bottom of orientation rotation axle is provided with baffle plate 91, the external diameter of baffle plate is more than the external diameter of orientation rotation axle, baffle plate can be fixed on the bottom (i.e. the end of orientation rotation axle lower end) of orientation rotation axle by screw, and baffle plate is used for fixed hub, i.e. restriction axle sleeve axial displacement.
Axle system Principle of Rotating: object stage, orientation rotation axle rotates together with angular contact ball bearing inner ring, the little collar of thrust ball bearing.
Claims (8)
1. a precise rotating platform vertical shaft series, including object stage, orientation rotation axle, angular contact ball bearing, thrust ball bearing and orientation static housing, it is characterised in that:
Described orientation rotation axle and angular contact ball bearing are arranged in orientation static housing;
The upper end of orientation rotation axle supports described object stage;
Described angular contact ball bearing is a pair, the back-to-back two ends being installed on orientation rotation axle of this diagonal angle contact ball bearing; The angular contact ball bearing being positioned at orientation rotation axle upper end is the first angular contact ball bearing, and the angular contact ball bearing being positioned at orientation rotation axle lower end is the second angular contact ball bearing;
It is provided with bearing between first angular contact ball bearing with orientation static housing and installs nested, the periphery of the second angular contact ball bearing and orientation static housing contact internal walls;
Described thrust ball bearing is double-direction thrust ball bearing, including upper shaft carrier ring, lower bearing ring and the axis carrier ring that is arranged between upper shaft carrier ring and lower bearing ring; Thrust ball bearing is socketed on orientation rotation axle, between pair of horns contact ball bearing;
Being provided with first annular step in orientation static housing, described lower bearing ring is pressed on described first annular step, and upper shaft carrier ring is installed nesting by described bearing and compressed;
The upper/lower terminal of described orientation rotation axle is respectively sleeved on locking member; The locking member being positioned at orientation rotation axle upper end is arranged on above the first angular contact ball bearing, and the locking member being positioned at orientation rotation axle lower end is arranged on below the second angular contact ball bearing, and locking member is used for compressing corresponding contact ball bearing inner race.
2. precise rotating platform vertical shaft series according to claim 1, it is characterised in that: it is positioned on the orientation rotation axle of below described axis carrier ring and is cased with axle sleeve.
3. precise rotating platform vertical shaft series according to claim 2, it is characterised in that: be positioned at more than described axis carrier ring orientation rotation axle external diameter more than, be positioned at the external diameter of the orientation rotation axle of below the axis carrier ring of thrust ball bearing.
4. precise rotating platform vertical shaft series according to claim 3, it is characterised in that: the bottom of orientation static housing is fixed on base.
5. the precise rotating platform vertical shaft series according to claim 1 or 2 or 3 or 4, it is characterised in that: described bearing is installed nested inwall and is provided with the second ring-shaped step, and the first angular contact ball bearing drops on the second ring-shaped step.
6. precise rotating platform vertical shaft series according to claim 4, it is characterized in that: the internal diameter of the orientation static housing between thrust ball bearing and the second angular contact ball bearing is R1, the adjacent casing internal diameter in second angular contact ball bearing periphery is that R2, R1 are more than R2.
7. precise rotating platform vertical shaft series according to claim 5, it is characterised in that: the bottom of orientation rotation axle is provided with baffle plate, and the external diameter of baffle plate is more than the external diameter of orientation rotation axle.
8. precise rotating platform vertical shaft series according to claim 6, it is characterised in that: described locking member is nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050405.2U CN205298979U (en) | 2015-12-15 | 2015-12-15 | Precise rotating platform vertical axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050405.2U CN205298979U (en) | 2015-12-15 | 2015-12-15 | Precise rotating platform vertical axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298979U true CN205298979U (en) | 2016-06-08 |
Family
ID=56432190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521050405.2U Withdrawn - After Issue CN205298979U (en) | 2015-12-15 | 2015-12-15 | Precise rotating platform vertical axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423077A (en) * | 2015-12-15 | 2016-03-23 | 中国科学院西安光学精密机械研究所 | Precise turntable vertical shaft system |
-
2015
- 2015-12-15 CN CN201521050405.2U patent/CN205298979U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423077A (en) * | 2015-12-15 | 2016-03-23 | 中国科学院西安光学精密机械研究所 | Precise turntable vertical shaft system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20170627 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20170627 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |