CN202707974U - Mounting structure for screw rod bearings - Google Patents
Mounting structure for screw rod bearings Download PDFInfo
- Publication number
- CN202707974U CN202707974U CN 201220325959 CN201220325959U CN202707974U CN 202707974 U CN202707974 U CN 202707974U CN 201220325959 CN201220325959 CN 201220325959 CN 201220325959 U CN201220325959 U CN 201220325959U CN 202707974 U CN202707974 U CN 202707974U
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- CN
- China
- Prior art keywords
- bearings
- bearing
- screw rod
- mounting structure
- screw mandrel
- 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
The utility model discloses a mounting structure for screw rod bearings and belongs to the mechanical field. The mounting structure comprises a screw rod, bearings, a screw rod nut base, a bearing pressing ring and locking nuts, wherein the bearing pressing ring, the screw rod nut base, the bearings and the locking nuts are sequentially sleeved on the screw rod; the bearings and the locking nuts are arranged in the screw rod nut base, and the bearings are fixedly locked in the screw rod nut base through the locking nuts; and the bearings are angular contact bearings and mounted on the screw rod in pairs. According to the mounting structure of the screw rod bearings mounted in pairs, a large angular contact angle is provided, the amount of the bearings is increased, and axial rigidity of the bearings can be improved substantially; and compared with deep groove ball bearings, tapered roller bearings or thrust ball bearings, start driving force is reduced, and the high accuracy is achieved.
Description
Technical field
The utility model relates to mechanical field, particularly relates to a kind of screw mandrel bearing mounting structure.
Background technique
In the prior art, the mounting structure of screw mandrel bearing generally comprises screw mandrel 11, bearing trim ring 12, feed screw nut's seat 13, bearing 14 and locking nut 15, as shown in Figure 1.The bearing that is installed on the screw mandrel generally all adopts deep groove ball bearing, and deep groove ball bearing is generally by an outer ring, and an inner ring, one group of steel ball and one group of retainer consist of.But adopt deep groove ball bearing to have following shortcoming:
The wrapping angle of steel ball and bearing outer ring is little, and a general screw mandrel is only selected two bearings, causes the axial stiffness of screw mandrel bearing low, startup driving mechanical resistance is large, precision is low.
In view of this, the inventor studies this, develops specially a kind of screw mandrel bearing mounting structure, and this case produces thus.
The model utility content
The purpose of this utility model provides the screw mandrel bearing mounting structure that a kind of axial stiffness is high, startup driving mechanical resistance is little and precision is high.
To achieve these goals, solution of the present utility model is:
The screw mandrel bearing mounting structure, comprise screw mandrel, bearing, feed screw nut's seat, bearing trim ring and locking nut, bearing trim ring, feed screw nut's seat, bearing and locking nut are linked on the screw mandrel successively, wherein, bearing and locking nut are positioned at feed screw nut's seat, and bearing is locked in feed screw nut's seat by locking nut.Described bearing is angular contact bearing, and paired mounting is on screw mandrel.
Four bearings are installed on the screw mandrel, two two back-to-back arrangements, the angle contacting angle of described bearing is 60 °.
By the screw mandrel bearing mounting structure of above-mentioned back-to-back paired mounting, both had larger angle contacting angle, increased again the quantity of bearing, can increase considerably the axial stiffness of bearing; Compare with deep groove ball bearing, tapered roller or thrust ball bearing, reduced the startup driving force and realized highi degree of accuracy.
Below in conjunction with drawings and the specific embodiments the utility model is done and to be described in further detail.
Description of drawings
Fig. 1 screw mandrel bearing mounting structure of the prior art;
Fig. 2 is the screw mandrel bearing mounting structure of present embodiment.
Embodiment
As shown in Figure 1, the screw mandrel bearing mounting structure, comprise screw mandrel 21, bearing 24, feed screw nut's seat 23, bearing trim ring 22 and locking nut 25, bearing trim ring 22, feed screw nut's seat 23, bearing 24 and locking nut 25 are linked on the screw mandrel 21 successively, wherein, bearing 21 and locking nut 25 are positioned at feed screw nut's seat 23, and bearing 21 is locked in feed screw nut's seat 23 by locking nut 25.Described bearing 24 is angular contact bearing, and paired mounting is on screw mandrel 21.
In the present embodiment, 24, the two two back-to-back arrangements of four bearings are installed on the described screw mandrel 21, the angle contacting angle of described bearing 24 is 60 °.Also can adopt the angular contact bearing of other angles according to specific requirement, such as 25 °, 30 ° or 40 °.In addition, because single-row angular contact ball bearing can only bear the one direction axial load, therefore generally all adopt paired mounting, so in the utility model, screw mandrel 21 can be installed two, four or other even number bearings.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (3)
1. screw mandrel bearing mounting structure, it is characterized in that: comprise screw mandrel, bearing, feed screw nut's seat, bearing trim ring and locking nut, bearing trim ring, feed screw nut's seat, bearing and locking nut are linked on the screw mandrel successively, wherein, bearing and locking nut are positioned at feed screw nut's seat, and bearing is locked in feed screw nut's seat by locking nut; Described bearing is angular contact bearing, and paired mounting is on screw mandrel.
2. screw mandrel bearing mounting structure as claimed in claim 1 is characterized in that: four bearings are installed on the described screw mandrel.
3. screw mandrel bearing mounting structure as claimed in claim 1, it is characterized in that: the angle contacting angle of described bearing is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325959 CN202707974U (en) | 2012-07-05 | 2012-07-05 | Mounting structure for screw rod bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325959 CN202707974U (en) | 2012-07-05 | 2012-07-05 | Mounting structure for screw rod bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707974U true CN202707974U (en) | 2013-01-30 |
Family
ID=47588280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325959 Expired - Fee Related CN202707974U (en) | 2012-07-05 | 2012-07-05 | Mounting structure for screw rod bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312839A (en) * | 2016-06-14 | 2019-02-05 | 朋克联轴器有限公司 | Feed screw nut |
-
2012
- 2012-07-05 CN CN 201220325959 patent/CN202707974U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312839A (en) * | 2016-06-14 | 2019-02-05 | 朋克联轴器有限公司 | Feed screw nut |
| CN109312839B (en) * | 2016-06-14 | 2021-09-28 | 朋克联轴器有限公司 | Screw nut |
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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 |
Granted publication date: 20130130 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |