CN103016527A - Air bearing for high-speed motorized spindle - Google Patents
Air bearing for high-speed motorized spindle Download PDFInfo
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- CN103016527A CN103016527A CN201210586139XA CN201210586139A CN103016527A CN 103016527 A CN103016527 A CN 103016527A CN 201210586139X A CN201210586139X A CN 201210586139XA CN 201210586139 A CN201210586139 A CN 201210586139A CN 103016527 A CN103016527 A CN 103016527A
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- bearing
- radially
- throttle orifice
- main shaft
- pore
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Abstract
The invention relates to an air bearing for a high-speed motorized spindle. A radial throttling hole is formed at the bottom end of a radial air hole of the bearing. A micro air throttling hole and the bearing body are integrated, so that the structure is simple and the processing difficulty is reduced. The spindle rotates at high speed to ensure the stability of the spindle and avoid air-hammer effect generated in the using process of the orifice air throttling hole, so that the service life of the spindle in high-speed operation is prolonged, and the precision of processing products is provided.
Description
Technical field
The present invention relates to the technical field of pneumatic bearing, relate 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 gap between pneumatic bearing and the rotor by restrictor, formed air film separates on two surfaces of the relevant motion of handle just as oiling agent, 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 large, cause the in use stability reduction 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.
Summary of the invention
The object of the invention is to for 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 present invention 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 present invention's 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 High Rotation Speed, the pneumatic hammer effect of avoiding using the solar term hole of outlet type 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 first preferred embodiment of the invention 1;
Fig. 2 is the sectional view of second preferred embodiment of the invention 1a;
Fig. 3 is the plan view of second preferred embodiment of the invention 1a;
Fig. 4 is first preferred embodiment of the invention 1, the second preferred implementation column 1a assembly structure schematic representation.
Description of reference numerals
The direction of arrow represents airflow direction among the figure
Embodiment
In order to more fully understand technology contents of the present invention, below in conjunction with specific embodiment technological scheme of the present invention is further introduced and explanation.
As shown in Figure 1, be the sectional view of first preferred embodiment of the invention 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 second preferred embodiment of the invention 1a; As shown in Figure 3, be the plan view of second preferred embodiment of the invention 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 first preferred embodiment of the invention 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 front gas bearing, and bearing 1a is as rear gas bearing.
The above only further specifies technology contents of the present invention with embodiment, so that the reader is more readily understood, does not only limit to this but do not represent embodiments of the present invention, and any technology of doing according to the present invention is extended or recreation, all is subjected to protection of the present invention.
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. described pneumatic bearing for high-speed electric main shaft according to claim 1 is characterized in that 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.
3. described pneumatic bearing for high-speed electric main shaft according to claim 2 is characterized in that 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.
4. described pneumatic bearing for high-speed electric main shaft according to claim 3 is characterized in that, is in the radially pore on the different circumferential sections, is interconnected by axial pore on axially same.
5. described pneumatic bearing for high-speed electric main shaft according to claim 4 is characterized in that the top of described axial pore is provided with axial throttle orifice.
6. described pneumatic bearing for high-speed electric main shaft according to claim 5 is characterized in that 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.
7. described pneumatic bearing for high-speed electric main shaft according to claim 6 is characterized in that 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.
8. according to claim 1 to 7 arbitrary described pneumatic bearing for high-speed electric main shaft, 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 |
|---|---|---|---|
| CN201210586139XA CN103016527A (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed motorized spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586139XA CN103016527A (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed motorized spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103016527A true CN103016527A (en) | 2013-04-03 |
Family
ID=47965488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210586139XA Pending CN103016527A (en) | 2012-12-28 | 2012-12-28 | Air bearing for high-speed motorized spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016527A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194507A (en) * | 2018-01-26 | 2018-06-22 | 中国计量大学 | A kind of non-uniform Distribution variable orifice diameter is radial gas bearing provided |
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200305477A (en) * | 2002-03-12 | 2003-11-01 | Aerolas Gmbh | High-frequency spindle |
| US20060147136A1 (en) * | 2005-01-05 | 2006-07-06 | Hertel Richard J | Air bearing having unitary housing |
| CN201535318U (en) * | 2009-10-19 | 2010-07-28 | 达航工业股份有限公司 | Air bearing |
| CN102410307A (en) * | 2011-11-21 | 2012-04-11 | 苏州吉矽精密科技有限公司 | Air main shaft bearing with antifriction sleeve structure |
| CN202207802U (en) * | 2011-08-04 | 2012-05-02 | 达航工业股份有限公司 | Main shaft device capable of improving cooling efficiency |
| CN203130802U (en) * | 2012-12-28 | 2013-08-14 | 深圳市速锋科技有限公司 | Air bearing for high-speed electric main shaft |
-
2012
- 2012-12-28 CN CN201210586139XA patent/CN103016527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200305477A (en) * | 2002-03-12 | 2003-11-01 | Aerolas Gmbh | High-frequency spindle |
| US20060147136A1 (en) * | 2005-01-05 | 2006-07-06 | Hertel Richard J | Air bearing having unitary housing |
| CN201535318U (en) * | 2009-10-19 | 2010-07-28 | 达航工业股份有限公司 | Air bearing |
| CN202207802U (en) * | 2011-08-04 | 2012-05-02 | 达航工业股份有限公司 | Main shaft device capable of improving cooling efficiency |
| CN102410307A (en) * | 2011-11-21 | 2012-04-11 | 苏州吉矽精密科技有限公司 | Air main shaft bearing with antifriction sleeve structure |
| CN203130802U (en) * | 2012-12-28 | 2013-08-14 | 深圳市速锋科技有限公司 | Air bearing for high-speed electric main shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194507A (en) * | 2018-01-26 | 2018-06-22 | 中国计量大学 | A kind of non-uniform Distribution variable orifice diameter is radial gas bearing provided |
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |