CN204381418U - A kind of new-type air-floatation main shaft - Google Patents
A kind of new-type air-floatation main shaft Download PDFInfo
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- CN204381418U CN204381418U CN201420847674.0U CN201420847674U CN204381418U CN 204381418 U CN204381418 U CN 204381418U CN 201420847674 U CN201420847674 U CN 201420847674U CN 204381418 U CN204381418 U CN 204381418U
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- axially extending
- extending bore
- damping plug
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- air
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Abstract
A kind of new-type air-floatation main shaft, it comprises body, with the axle core of the mode cross-under of matched in clearance in body, the screwing sections that part has a flying disc, axle core protrudes from body rear end face that axle core protrudes from body front end face has a rear thrust plate, body is provided with multiple at body circumferentially equally distributed axially extending bore, the two ends of each axially extending bore are provided with one respectively just to the axial damping plug of flying disc and rear thrust plate; Be equipped with the radial damping plug of multiple row in body, each arranges radial damping plug is all run through connection by an axially extending bore; Body is provided with the air inlet that is communicated with extraneous high-pressure air source and by air inlet respectively with multiple axially extending bore gas passage.The utility model without the need to fixedly mounting front thrust bearing and rear thrust bearing on body, and while simplification air-floating main shaft installation process, reduces the required precision of parts machining.
Description
Technical field
The utility model relates to a kind of new-type air-floatation main shaft.
Background technology
As shown in Figure 1, for the existing air-floating main shaft of one, it comprises body 10, axle core 11, front thrust bearing 13, rear thrust bearing 14 and adjusting pad 15, front thrust bearing 13 and rear thrust bearing 14 are all fixed on body 10, it is inner that axle core 11 is articulated in body 10, and one end of axle core 11 is provided with a flying disc 12 between front thrust bearing 13 and rear thrust bearing 14, utilize body 10, front thrust bearing 13, the gas passage that rear thrust bearing 14 is arranged is by the axial damping plug on the thrust surface of gases at high pressure two thrust bearing, and just to the radial damping plug of axle core 11 side, the gases at high pressure utilizing damping plug to spray form high pressure air film and form radial direction and axially mounting to axle core 11.Above-mentioned air-floating main shaft forms axially two rightabout support forces to axle core 11 due to needs, therefore, two thrust bearings must be set, and need to arrange spacer between two thrust bearings, structure is comparatively complicated, meanwhile, two thrust bearings all need processing gas passage, adds the difficulty of parts machining.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of new-type air-floatation main shaft, and it can simplify the structure of air-floating main shaft, reduce the difficulty of parts machining.
For achieving the above object, the utility model adopts following technical scheme:
A kind of new-type air-floatation main shaft, it comprises body, with the axle core of the mode cross-under of matched in clearance in body, the screwing sections that part has a flying disc, axle core protrudes from body rear end face that axle core protrudes from body front end face has a rear thrust plate, body is provided with multiple at body circumferentially equally distributed axially extending bore, the two ends of each axially extending bore are provided with one respectively just to the axial damping plug of flying disc and rear thrust plate; Be equipped with the radial damping plug of multiple row in body, each arranges radial damping plug is all run through connection by an axially extending bore; Body is provided with the air inlet that is communicated with extraneous high-pressure air source and by air inlet respectively with multiple axially extending bore gas passage.
Gas passage comprises the circular passage be arranged on body, and it is multiple with axially extending bore radial hole one to one, one end of this radial hole is communicated in the axially extending bore corresponding with it, the other end is communicated in circular passage, and air inlet is communicated with one of them axially extending bore.
Radial damping plug has one radially damping plug radial direction extend and with axially extending bore run through the air admission hole that is communicated with and radially damping plug axially extend and the throttle orifice be communicated with air admission hole.
The beneficial effects of the utility model are:
Compared to prior art, the utility model to be spirally connected thrust plate after in the rearward end of axle core, therefore, without the need to fixedly mounting front thrust bearing and rear thrust bearing on body, and when mounted, by rotating rear thrust plate, the position of thrust plate on axle core after adjustment, can eliminate the mismachining tolerance of parts, meet the matching requirements between all parts, while simplifying air-floating main shaft installation process, reduce the required precision of parts machining.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing air-floating main shaft;
Fig. 2 is the structural representation of the utility model air-floating main shaft;
Fig. 3 is the structural representation of radial damping plug in Fig. 2;
Wherein: 20, body; 21, axially extending bore; 22, air inlet; 23, circular passage; 24, radial hole; 30, axle core; 31, flying disc; 40, rear thrust plate; 50, radial damping plug; 51, air admission hole; 52, throttle orifice; 60, axial damping plug.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the utility model is described further:
As shown in Figure 2, for a kind of new-type air-floatation main shaft of the present utility model, it comprises body 20 and axle core 30, wherein, axle core 30 is inner at body 20 with the mode cross-under of matched in clearance, the part that axle core 30 protrudes from body 20 front end face has a flying disc 31, the screwing sections that axle core 30 protrudes from body 20 rear end face has a rear thrust plate 40, body 20 is provided with multiple at body 20 circumferentially equally distributed axially extending bore 21, the two ends of each axially extending bore 21 are provided with one respectively just to the axial damping plug 60 of flying disc 31 and rear thrust plate 40; Be equipped with the radial damping plug 50 of multiple row in body 20, each arranges radial damping plug 50 is all run through connection by one of them axially extending bore 21; Body 20 is provided with the air inlet 22 that is communicated with extraneous high-pressure air source and by air inlet 22 respectively with multiple axially extending bore 21 gas passage.
The utility model operationally, gases at high pressure enter into gas passage by air inlet 22, by gas passage, gases at high pressure are distributed to multiple axially extending bore 21 uniformly again, respectively gases at high pressure are flowed to the axial damping plug 60 being positioned at its two ends and the radial damping plug 50 be communicated on axially extending bore 21 by axially extending bore 21, thus supporting is formed to the two ends of axle core 30 and lateral surface.Because the utility model to be spirally connected thrust plate 40 after in the rearward end of axle core 30, therefore, without the need to fixedly mounting front thrust bearing and rear thrust bearing on body 20, and when mounted, by rotating rear thrust plate 40, the position of thrust plate 40 on axle core 30 after adjustment, the mismachining tolerance of parts can be eliminated, meet the matching requirements between all parts, while simplifying air-floating main shaft installation process, reduce the required precision of parts machining.
Above-mentioned gas passage comprises the circular passage 23 be arranged on body 20, and it is multiple with axially extending bore 21 radial hole 24 one to one, one end of this radial hole 24 is communicated in the axially extending bore 21 corresponding with it, the other end is communicated in circular passage 23, and air inlet 22 is communicated with one of them axially extending bore 21, thus, the gases at high pressure that air inlet 22 is carried are assigned to each axially extending bore 21 uniformly, guarantee the two ends of axle core 30 and the isostasy of outer peripheral edge air film.
As shown in Figure 3, above-mentioned radial damping plug 50 has one radially damping plug 50 radial direction extend and with axially extending bore 21 run through the air admission hole 51 that is communicated with and radially damping plug 50 axially extend and the throttle orifice 52 be communicated with air admission hole 51, when mounted, radial damping plug 50 is embedded in body 20, air admission hole 51 is alignd with axially extending bore 21, so, the conducting of body 20 inner air path can be realized, further simplify the installation process of air-floating main shaft.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (3)
1. a new-type air-floatation main shaft, it comprises body, with the axle core of the mode cross-under of matched in clearance in body, it is characterized in that, the screwing sections that part has a flying disc, axle core protrudes from body rear end face that axle core protrudes from body front end face has a rear thrust plate, body is provided with multiple at body circumferentially equally distributed axially extending bore, the two ends of each axially extending bore are provided with one respectively just to the axial damping plug of flying disc and rear thrust plate; Be equipped with the radial damping plug of multiple row in body, each arranges radial damping plug is all run through connection by an axially extending bore; Body is provided with the air inlet that is communicated with extraneous high-pressure air source and by air inlet respectively with multiple axially extending bore gas passage.
2. new-type air-floatation main shaft as claimed in claim 1, it is characterized in that, gas passage comprises the circular passage be arranged on body, and it is multiple with axially extending bore radial hole one to one, one end of this radial hole is communicated in the axially extending bore corresponding with it, the other end is communicated in circular passage, and air inlet is communicated with one of them axially extending bore.
3. new-type air-floatation main shaft as claimed in claim 1, is characterized in that, radial damping plug has one radially damping plug radial direction extend and with axially extending bore run through the air admission hole that is communicated with and radially damping plug axially extend and the throttle orifice be communicated with air admission hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847674.0U CN204381418U (en) | 2014-12-26 | 2014-12-26 | A kind of new-type air-floatation main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847674.0U CN204381418U (en) | 2014-12-26 | 2014-12-26 | A kind of new-type air-floatation main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204381418U true CN204381418U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420847674.0U Active CN204381418U (en) | 2014-12-26 | 2014-12-26 | A kind of new-type air-floatation main shaft |
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| CN (1) | CN204381418U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321634A (en) * | 2016-11-18 | 2017-01-11 | 广州市昊志机电股份有限公司 | Composite air flotation shafting structure |
| CN108240479A (en) * | 2017-12-12 | 2018-07-03 | 广州市昊志机电股份有限公司 | A kind of main shaft for sliding suspending sealing |
| CN110026572A (en) * | 2019-03-27 | 2019-07-19 | 浙江工业大学 | A kind of stepless variable damping device of gas-static main shaft air film |
| CN112059902A (en) * | 2020-08-18 | 2020-12-11 | 广州市昊志机电股份有限公司 | Air-floatation motorized spindle and grinding machine tool |
| CN112128383A (en) * | 2020-08-14 | 2020-12-25 | 北京北一机床股份有限公司 | Air floatation disc type rotary and axial sealing structure and method |
| CN114619266A (en) * | 2022-02-28 | 2022-06-14 | 泰山学院 | Compact gas static pressure shafting structure |
-
2014
- 2014-12-26 CN CN201420847674.0U patent/CN204381418U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321634A (en) * | 2016-11-18 | 2017-01-11 | 广州市昊志机电股份有限公司 | Composite air flotation shafting structure |
| CN108240479A (en) * | 2017-12-12 | 2018-07-03 | 广州市昊志机电股份有限公司 | A kind of main shaft for sliding suspending sealing |
| CN110026572A (en) * | 2019-03-27 | 2019-07-19 | 浙江工业大学 | A kind of stepless variable damping device of gas-static main shaft air film |
| CN110026572B (en) * | 2019-03-27 | 2024-03-26 | 浙江工业大学 | Stepless damping device that becomes of gas static pressure main shaft air film |
| CN112128383A (en) * | 2020-08-14 | 2020-12-25 | 北京北一机床股份有限公司 | Air floatation disc type rotary and axial sealing structure and method |
| CN112059902A (en) * | 2020-08-18 | 2020-12-11 | 广州市昊志机电股份有限公司 | Air-floatation motorized spindle and grinding machine tool |
| WO2022036990A1 (en) * | 2020-08-18 | 2022-02-24 | 广州市昊志机电股份有限公司 | Air bearing spindle and grinding machine tool |
| CN114619266A (en) * | 2022-02-28 | 2022-06-14 | 泰山学院 | Compact gas static pressure shafting structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |