CN102198517A - Bicylindrical porous aerostatic motorized main shaft - Google Patents
Bicylindrical porous aerostatic motorized main shaft Download PDFInfo
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- CN102198517A CN102198517A CN2011100700946A CN201110070094A CN102198517A CN 102198517 A CN102198517 A CN 102198517A CN 2011100700946 A CN2011100700946 A CN 2011100700946A CN 201110070094 A CN201110070094 A CN 201110070094A CN 102198517 A CN102198517 A CN 102198517A
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- main shaft
- aerostatic
- bearing
- bicylindrical
- porous
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Abstract
The invention belongs to the field of advanced manufacturing and is an improvement on the structure of the traditional aerostatic motorized main shaft. As one of the key members of a machine tool, a shafting of main shafts is mainly divided into a bearing main shaft, a hydraulic static main shaft and an aerostatic main shaft; with the further development of a static pressure technology, the hydrostatic static main shaft and the aerostatic main shaft have obvious advantages on aspects of high rotational speed, large rigidity and long service life, and the aerostatic motorized main shaft is also different from the hydraulic static main shaft and is suitable for machining non-ferrous metals, rigid plastics and the like; the common aerostatic main shaft is more common in a single cylinder shape and in a spherical structure shape; the application of bicylindrical structure can further improve the rigidity of the aerostatic main shaft and the rotation precision; and a porous material adopts graphite. Compared with the traditional orifice compensated bearing, the porous bearing has the advantages of high bearing capacity, good stability, low cost and the like.
Description
Technical field
The invention belongs to advanced manufacturing field, is to a kind of improvement on traditional gas-static electricity main axle structure.Common gas-static main shaft is more common in single-column face form and spherical structure form.Use rigidity and rotating accuracy that the bicylindrical structure can further improve the gas main shaft.Porous matter material adopts graphite, and with respect to traditional orifice restriction bearing, porous matter bearing has very high bearing capacity, advantages such as good stable and low cost.
Background technology
Principle axis shafting is divided into bearing spindle, fluid pressure main shaft, gas-static main shaft substantially as one of core component of lathe.Along with further developing of static pressure technology, the high rotating speed of fluid pressure main shaft and gas hydrostatic spindle, big rigidity and long-life aspect have clear superiority, and gas-static electricity main shaft is fit to be processed with non-ferrous metal, rigid plastics etc., is different from the fluid pressure main shaft again.
Description of drawings
Figure is bicylindrical porous gas static pressure main axle structure figure.
The specific embodiment
Further specify embodiment below in conjunction with accompanying drawing.
Wherein 1 is main shaft, and 2 is the front axle bearing sleeve, and 3 is preceding graphite sleeve, and 4 and 6 is the thrust bearing graphite annulus, and 5 is adjusting pad, and 7 is back graphite sleeve, and 8 is the rear axle bearing sleeve, and 9 is rotor, and 10 is motor stator, and 11 is overcoat.Front axle bearing sleeve 2 and rear axle bearing sleeve 8 all are cylinders, and the front and back diameter is identical, are distributed in thrust bearing 4 and 6 two ends.Adjust the axial gas gap by grinding adjusting pad 5, adjust the radial gas gap by making a grinding rod.The axiality of front axle bearing sleeve 2 and rear axle bearing sleeve 8 is also ground by aluminium bar and is obtained.Power of motor is 7.7Kw, and rated speed is 5000rpm.The bearing manufacturing process of front and back bicylindrical structure is fairly simple, but the difficult assurance of assembly technology.Solved the problem in the front and back bearings mounting process in the content of the present invention, effect is remarkable, and rotating accuracy reaches 3 μ m, and rigidity reaches 300N/ μ m.
Claims (2)
1. bicylindrical porous gas static pressure electricity main shaft adopts graphite to do porous material, plays throttle air; Anteroposterior diameter equates to bearing diameter, and bearing is cylindrical shape, and thrust bearing is distributing between two cylinder journal bearings; Journal bearing guarantees the axiality and the gas gap of front and back bearings by the aluminium bar grinding rod, and thrust bearing guarantees perpendicularity and gas gap by adjusting pad; The inner inner electric machine of installing of electricity main shaft reduces the dimension chain driving error.
2. according to the described bicylindrical porous gas static pressure electricity of claim 1 main shaft, it is characterized in that the radially main shaft of bicylindrical improves the radially rotating accuracy of main shaft greatly before and after adopting, rigidity improves, the simplified manufacturing process of main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100700946A CN102198517A (en) | 2011-03-23 | 2011-03-23 | Bicylindrical porous aerostatic motorized main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100700946A CN102198517A (en) | 2011-03-23 | 2011-03-23 | Bicylindrical porous aerostatic motorized main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102198517A true CN102198517A (en) | 2011-09-28 |
Family
ID=44659653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100700946A Pending CN102198517A (en) | 2011-03-23 | 2011-03-23 | Bicylindrical porous aerostatic motorized main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102198517A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606864A (en) * | 2012-03-26 | 2012-07-25 | 西安交通大学 | Hemisphere centering plane supporting turntable structure of large-caliber ultra-precise measuring machine |
| CN103934480A (en) * | 2014-04-15 | 2014-07-23 | 中国科学院宁波材料技术与工程研究所 | High-speed motorized spindle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2561994Y (en) * | 2002-02-01 | 2003-07-23 | 张浩元 | High speed power unit with air bearing with high rotation accuracy |
| CN1785561A (en) * | 2005-10-26 | 2006-06-14 | 广东工业大学 | High speed high rigidity composite multibase gas static pressure bearing electric main shaft |
| US20090010579A1 (en) * | 2007-07-02 | 2009-01-08 | Industry-Academic Cooperation Foundation Gyeongsang National University | Aerostatic bearing spindle system using unidirectional porous metal |
| JP2010159863A (en) * | 2009-01-09 | 2010-07-22 | Ntn Corp | Aerostatic bearing spindle |
| CN201752769U (en) * | 2010-07-09 | 2011-03-02 | 大连海事大学 | Electric spindle adopting gas hydrostatic bearing support |
-
2011
- 2011-03-23 CN CN2011100700946A patent/CN102198517A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2561994Y (en) * | 2002-02-01 | 2003-07-23 | 张浩元 | High speed power unit with air bearing with high rotation accuracy |
| CN1785561A (en) * | 2005-10-26 | 2006-06-14 | 广东工业大学 | High speed high rigidity composite multibase gas static pressure bearing electric main shaft |
| US20090010579A1 (en) * | 2007-07-02 | 2009-01-08 | Industry-Academic Cooperation Foundation Gyeongsang National University | Aerostatic bearing spindle system using unidirectional porous metal |
| JP2010159863A (en) * | 2009-01-09 | 2010-07-22 | Ntn Corp | Aerostatic bearing spindle |
| CN201752769U (en) * | 2010-07-09 | 2011-03-02 | 大连海事大学 | Electric spindle adopting gas hydrostatic bearing support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606864A (en) * | 2012-03-26 | 2012-07-25 | 西安交通大学 | Hemisphere centering plane supporting turntable structure of large-caliber ultra-precise measuring machine |
| CN103934480A (en) * | 2014-04-15 | 2014-07-23 | 中国科学院宁波材料技术与工程研究所 | High-speed motorized spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Han Shiguang Document name: Notification of Passing Examination on Formalities |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110928 |