CN203130802U - Air bearing for high-speed electric main shaft - Google Patents
Air bearing for high-speed electric main shaft Download PDFInfo
- Publication number
- CN203130802U CN203130802U CN 201220741892 CN201220741892U CN203130802U CN 203130802 U CN203130802 U CN 203130802U CN 201220741892 CN201220741892 CN 201220741892 CN 201220741892 U CN201220741892 U CN 201220741892U CN 203130802 U CN203130802 U CN 203130802U
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- Prior art keywords
- bearing
- main shaft
- radially
- speed electric
- electric main
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- Expired - Lifetime
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Abstract
The utility model relates to an air bearing for a high-speed electric main shaft. A radial throttling hole is formed in the bottom end of a radial air hole of the bearing. According to the air bearing disclosed by the utility model, a mini-type throttling hole and a bearing body are combined to form a whole body; the structure is simple and the machining difficulty is reduced; and under the high-speed rotation of the main shaft, the stability of the main shaft is guaranteed, and a pneumatic hammer effect generated in a use process of the orifice type throttling hole is avoided, so that the service life of the main shaft under high-speed operation is prolonged and the precision of machining a product is improved.
Description
Technical field
The utility model relates to the technical field of pneumatic bearing, relates in particular to a kind of pneumatic bearing for high-speed electric main shaft.
Background technique
The superheated steam of existing high-speed air bearing electric chief axis is generally from source and course and enters pneumatic bearing and gap between rotor by restrictor, formed air film is just as two surface isolation of the relevant motion of oiling agent handle, pore on the pneumatic bearing adopts single hole supply, groove crack to supply with and the porous supply mode more, processed complex, the processing technology difficulty is big, cause the stability reduction in use of high-speed air bearing electric chief axis, and be attended by the pneumatic hammer effect, limited the lifting of high-speed air bearing electric chief axis rotating speed and the life-span of minimizing main shaft.
The model utility content
The purpose of this utility model is to overcoming the defective of prior art, and a kind of pneumatic bearing for high-speed electric main shaft is provided.
For achieving the above object, the utility model by the following technical solutions: a kind of pneumatic bearing for high-speed electric main shaft, the bottom of the radially pore of described bearing is provided with radially throttle orifice.
The radially throttle orifice of described bearing is more than 2 or 2, and the radially throttle orifice diameter of described bearing is between 0.02mm to 0.10mm.
The radially pore of described bearing is a plurality of, and described radially pore is located on a plurality of circumferential sections that are parallel to each other of bearing sidewall, evenly distributes on each circumferential section.
Be in the radially pore on the different circumferential sections, be interconnected by axial pore on axially same.
The top of described axial pore is provided with axial throttle orifice.
The axial throttle orifice of described bearing is more than 2 or 2, and the axial throttle orifice diameter of described bearing is between 0.02mm to 0.10mm.
The axial throttle orifice quantity of described bearing is 4, and evenly distributes on a circumference; The radially throttle orifice quantity of described bearing is 3, and evenly distributes on a circumference.
The top that is positioned at the radially pore on the same circumferential section is communicated with by a circumferential recess.
The front and back ends of described bearing is provided with the sealing groove
The utility model beneficial effect compared with prior art is: 1) miniature solar term hole and bearing support are as integral body, and it is simple in structure, reduce difficulty of processing; 2) main shaft has guaranteed the stability of main shaft under rotation at a high speed, the pneumatic hammer effect of avoiding using the solar term hole of aperture formula in use to produce, thus prolonged the life-span of main shaft under high speed operation and the precision of processed product is provided.
Description of drawings
Fig. 1 is the sectional view of the utility model first preferred embodiment 1;
Fig. 2 is the sectional view of the utility model second preferred embodiment 1a;
Fig. 3 is the plan view of the utility model second preferred embodiment 1a;
Fig. 4 is the utility model first preferred embodiment 1, the second preferred implementation column 1a assembly structure schematic representation.
Description of reference numerals
The direction of arrow is represented airflow direction among the figure
Embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model is further introduced and explanation.
As shown in Figure 1, be the sectional view of the utility model first preferred embodiment 1, the bottom of the radially pore 11 of bearing 1 is provided with radially throttle orifice 111, and the radially throttle orifice diameter of bearing is between 0.02mm to 0.10mm.The radially pore 11 of bearing 1 is a plurality of, described radially pore 11 is located on a plurality of circumferential sections that are parallel to each other of bearing sidewall, on each circumferential section, evenly distribute, be in the radially pore 11 on the different circumferential sections, be interconnected by axial pore 12 on axially same, the radially throttle orifice quantity of described bearing is 3, and on a circumference, evenly distribute, the top that is positioned at the radially pore 11 on the same circumferential section is communicated with by a circumferential recess 13, and the front and back ends of described bearing 1 is provided with sealing groove 14.
As shown in Figure 2, be the sectional view of the utility model second preferred embodiment 1a; As shown in Figure 3, be the plan view of the utility model second preferred embodiment 1a, the bottom of the radially pore 11 of bearing 1a is provided with radially throttle orifice 111, and the radially throttle orifice diameter of bearing is between 0.02mm to 0.10mm.The radially pore 11 of bearing 1a is a plurality of, described radially pore 11 is located on a plurality of circumferential sections that are parallel to each other of bearing sidewall, on each circumferential section, evenly distribute, be in the radially pore 11 on the different circumferential sections, be interconnected by axial pore 12 on axially same, the radially throttle orifice quantity of described bearing is 3, and evenly distributes on a circumference.The top of described axial pore 12 is provided with axial throttle orifice 121.Axial throttle orifice 121 diameter of described bearing 1a are between 0.02mm to 0.10mm, axial throttle orifice 121 quantity of described bearing 1a are 4, and on a circumference, evenly distribute, the top that is positioned at the radially pore 11 on the same circumferential section is communicated with by a circumferential recess 13, and the front and back ends of described bearing 1 is provided with sealing groove 14.
Fig. 4 is the utility model first preferred embodiment 1, the second preferred implementation column 1a assembly structure schematic representation, comprises rotor 2, thrust bearing 4, steel bushing 3, and bearing 1 is as preceding gas bearing, and bearing 1a is as the back gas bearing.
The above only further specifies technology contents of the present utility model with embodiment; so that the reader is more readily understood; but do not represent mode of execution of the present utility model and only limit to this, any technology of doing according to the utility model is extended or recreation, all is subjected to protection of the present utility model.
Claims (9)
1. a pneumatic bearing that is used for high-speed electric main shaft is characterized in that the bottom of the radially pore of described bearing is provided with radially throttle orifice.
2. according to the described pneumatic bearing for high-speed electric main shaft of claim 1, it is characterized in that the radially throttle orifice of described bearing is more than 2 or 2, the radially throttle orifice diameter of described bearing is between 0.02mm to 0.10mm.
3. according to the described pneumatic bearing for high-speed electric main shaft of claim 2, it is characterized in that the radially pore of described bearing is a plurality of, described radially pore is located on a plurality of circumferential sections that are parallel to each other of bearing sidewall, evenly distributes on each circumferential section.
4. according to the described pneumatic bearing for high-speed electric main shaft of claim 3, it is characterized in that, be in the radially pore on the different circumferential sections, be interconnected by axial pore on axially same.
5. according to the described pneumatic bearing for high-speed electric main shaft of claim 4, it is characterized in that the top of described axial pore is provided with axial throttle orifice.
6. according to the described pneumatic bearing for high-speed electric main shaft of claim 5, it is characterized in that the axial throttle orifice of described bearing is more than 2 or 2, the axial throttle orifice diameter of described bearing is between 0.02mm to 0.10mm.
7. according to the described pneumatic bearing for high-speed electric main shaft of claim 6, it is characterized in that the axial throttle orifice quantity of described bearing is 4, and on a circumference, evenly distribute; The radially throttle orifice quantity of described bearing is 3, and evenly distributes on a circumference.
8. according to the arbitrary described pneumatic bearing for high-speed electric main shaft of claim 1 to 7, it is characterized in that the top that is positioned at the radially pore on the same circumferential section is communicated with by a circumferential recess.
9. described pneumatic bearing for high-speed electric main shaft according to Claim 8 is characterized in that, the front and back ends of described bearing is provided with the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741892 CN203130802U (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741892 CN203130802U (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed electric main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130802U true CN203130802U (en) | 2013-08-14 |
Family
ID=48938782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741892 Expired - Lifetime CN203130802U (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed electric main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016527A (en) * | 2012-12-28 | 2013-04-03 | 深圳市速锋科技有限公司 | Air bearing for high-speed motorized spindle |
| CN107923833A (en) * | 2015-08-25 | 2018-04-17 | 热电子(卡尔斯鲁厄)有限公司 | Rheometer with gas bearing |
-
2012
- 2012-12-28 CN CN 201220741892 patent/CN203130802U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016527A (en) * | 2012-12-28 | 2013-04-03 | 深圳市速锋科技有限公司 | Air bearing for high-speed motorized spindle |
| CN107923833A (en) * | 2015-08-25 | 2018-04-17 | 热电子(卡尔斯鲁厄)有限公司 | Rheometer with gas bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 518000, Shenzhen, Guangdong province Baoan District Xixiang Street West Industrial Zone, 47 Hongshan building, East and West, two floor Patentee after: SHENZHEN SUFENG SCIENCE & TECHNOLOGY CO.,LTD. Address before: 518000, Shenzhen, Guangdong province Baoan District Xixiang Street Xicheng Industrial Zone Hongshan building east two floor Patentee before: SHENZHEN SUFENG TECHNOLOGY Co.,Ltd. |
|
| IP01 | Partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Commission number: 5W115133 Conclusion of examination: Declare that claim 1-8 of utility model patent 201220741892.7 is invalid, and maintain the validity of the patent on the basis of claim 9. Decision date of declaring invalidation: 20181105 Decision number of declaring invalidation: 37642 Denomination of utility model: Air bearing for high-speed motorized spindle Granted publication date: 20130814 Patentee: SHENZHEN SUFENG SCIENCE & TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |