CN107559305B - Air static pressure supporting self-aligning device - Google Patents
Air static pressure supporting self-aligning device Download PDFInfo
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- CN107559305B CN107559305B CN201710966217.1A CN201710966217A CN107559305B CN 107559305 B CN107559305 B CN 107559305B CN 201710966217 A CN201710966217 A CN 201710966217A CN 107559305 B CN107559305 B CN 107559305B
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- outer frame
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- frame
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Abstract
The invention discloses an aerostatic bearing self-aligning device which can be applied to posture adjustment of an aspheric rotationally symmetrical part. The base is respectively provided with an orifice I, an orifice II, an air inlet I, an air outlet and an annular groove which are distributed in an annular mode. According to the invention, an aerostatic bearing technology is adopted, and the friction-free automatic centering adjustment between the adjusted posture part and the tool is realized by means of a spherical self-centering principle, so that the surface quality of the part is protected; meanwhile, the posture of the part with the regulated posture is kept unchanged relative to the device by adopting vacuum negative pressure, so that manual regulation and detection are reduced.
Description
Technical Field
The invention belongs to the technical field of aerostatic bearings, and particularly relates to an aerostatic bearing self-aligning device. The invention can be applied to the posture adjustment of the non-spherical rotationally symmetrical part, and can realize the automatic adjustment of the central axis of the non-spherical rotationally symmetrical part.
Background
In the current part posture adjustment of an assembly site, particularly the posture adjustment of an aspheric rotationally symmetrical part, a repeated iteration mode of combining manual adjustment and measurement is adopted, so that the posture adjustment efficiency is low; when measuring the axis of the non-spherical rotationally symmetrical part, the part is required to be placed in the rotary table, and the precision of the rotary table influences the measurement result; when the gesture of the part is adjusted, friction and the like between the part and the tool also damage the surface quality of the part.
Disclosure of Invention
In order to overcome the defects of complex posture adjustment, low efficiency and surface damage of parts in the prior art, the invention provides the aerostatic bearing self-adjusting device which is used for posture adjustment of non-spherical rotationally symmetrical parts, realizes automatic adjustment of central axes of the non-spherical rotationally symmetrical parts, reduces manual adjustment and detection, improves adjustment efficiency and protects the surface quality of the parts.
The technical scheme of the invention is as follows:
the invention relates to an aerostatic support self-aligning device which is characterized by comprising a base, an outer frame, an inner frame, a rubber pad and a cover plate. Wherein, the internal surface of base is the sphere, and the sphere bottom is the cylinder. The outer frame and the inner frame are of annular structures, the inner surface of the outer frame is a circular ring surface, and the inner surface of the inner frame consists of a conical surface and a circular ring surface. The connection relation is that the base lower part be provided with annular apron, the base passes through screw and apron fixed connection, annular rubber pad sets up between base and apron. The outer frame is arranged on the upper part of the base. The inner frame is arranged on the annular inner side of the outer frame and is connected with the outer frame through screws, and an annular cavity is arranged between the inner annular surface of the outer frame and the outer annular surface of the inner frame. The spherical surface of the base and the outer surface of the part with the posture adjusted form an air film gap. The bottom of the base is respectively provided with an air inlet I, an air outlet and an annular groove, the air inlet I is communicated with the annular groove, high-pressure air enters the annular groove of the base from the air inlet I, the air outlet is communicated with the bottom cylindrical surface of the base, and air between the gesture adjusting part and the base is discharged from the air outlet to form the gesture of the negative-pressure fixed part. The inner frame is provided with an orifice III, and the conical surface of the inner frame and the outer surface of the part with the posture adjusted form an air film gap. The outer frame is provided with an air inlet II which is communicated with the annular cavity, and high-pressure gas enters the annular cavity between the outer frame and the inner frame from the air inlet II.
The base, the outer frame and the inner frame are concentric.
The orifices I and II are correspondingly arranged.
The number of the orifices I and the number of the orifices II are 8-16.
The self-aligning device for the aerostatic bearing has the beneficial effects that: the aerostatic supporting self-aligning device adopts an aerostatic supporting technology, and realizes friction-free automatic centering adjustment between the adjusted posture part and the tool by means of a spherical self-aligning principle, so that the surface quality of the part is protected; meanwhile, the posture of the part with the regulated posture is kept unchanged relative to the device by adopting vacuum negative pressure, so that manual regulation and detection are reduced.
Drawings
FIG. 1 is a front view of an aerostatic bearing self-aligning device of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a top view of the base of the present invention;
in the figure, 1, a base 11, an orifice I12, an orifice II 13, an air inlet I14, an air outlet 15, an annular groove 2, an outer frame 21, an air inlet II 23, an annular cavity 3, an inner frame 31, an orifice III 4, a rubber pad 5 and a cover plate.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
example 1
Fig. 1 is a front view of an aerostatic supporting self-aligning device of the present invention, fig. 2 is a sectional view A-A of fig. 1, and fig. 3 is a plan view of a base of the present invention. In fig. 1-3, the aerostatic supporting self-aligning device comprises a base 1, an outer frame 2, an inner frame 3, a rubber pad 4 and a cover plate 5, wherein the inner surface of the base 1 is a spherical surface, and the bottom of the spherical surface is a cylindrical surface. The outer frame 2 and the inner frame 3 are of annular structures, the inner surface of the outer frame 2 is a circular ring surface, and the inner surface of the inner frame 3 consists of a conical surface and a circular ring surface. The connection relation is that the lower part of the base 1 is provided with an annular cover plate 5, the base 1 is fixedly connected with the cover plate 5 through screws, and an annular rubber pad 4 is arranged between the base 1 and the cover plate 5. The outer frame 2 is arranged on the upper part of the base 1. The inner frame 3 is arranged on the annular inner side of the outer frame 2 and is connected with the outer frame 2 through screws, and an annular cavity 23 is arranged between the inner annular surface of the outer frame 2 and the outer annular surface of the inner frame 3. Two circles of throttling holes distributed in an annular mode are formed in the spherical surface of the base 1, namely a throttling hole I11 of an inner ring and a throttling hole II 12 of an outer ring, and an air film gap is formed between the spherical surface of the base 1 and the outer surface of the part with the posture adjusted. The bottom of the base 1 is respectively provided with an air inlet I13, an air outlet 14 and an annular groove 15, the air inlet I13 is communicated with the annular groove 15, high-pressure gas enters the annular groove 15 of the base 1 from the air inlet I13, the air outlet 14 is communicated with the bottom cylindrical surface of the base 1, and air between the posture adjusting part and the base 1 is discharged from the air outlet 14 to form the posture of the negative-pressure fixing part. The inner frame 3 is provided with an orifice III 31, and the conical surface of the inner frame 3 and the outer surface of the part with the posture adjusted form an air film gap. The outer frame 2 is provided with an air inlet hole II 21, the air inlet hole II 21 is communicated with the annular cavity 23, and high-pressure air enters the annular cavity 23 between the outer frame 2 and the inner frame 3 from the air inlet hole II 21.
The base 1, the outer frame 2 and the inner frame 3 are concentric.
The orifices I11 and II 12 are correspondingly arranged.
The number of the orifices I11 and the number of the orifices II 12 are 8-16.
In this embodiment, the number of the orifices i 11 and ii 12 is 12, where the orifice i 11 is one hole in the orifice i, and the orifice ii 12 is one hole in the orifice ii.
The working state of the aerostatic supporting self-aligning device is as follows: the high-pressure gas enters the annular groove 15 of the base 1 through the air inlet I13 on the base 1, meanwhile, the high-pressure gas enters the annular cavity 23 between the outer frame 2 and the inner frame 3 through the air inlet II 21 on the outer frame 2, and then flows through the orifices I11 and II 12 on the base 1 and the orifices III 31 on the inner frame 3 respectively, a layer of air film is formed among the spherical surface of the base 1, the conical surface of the inner frame 3 and the posture-adjusted part, and the axial centers of the parts are automatically adjusted through the two rows of orifices I11 and II 12 distributed along the spherical surface on the base and the orifices III 31 on the inner frame 3; after ventilation automatic alignment, the negative pressure is opened in vacuum, the part with the adjusted posture is preliminarily fixed through the air suction hole 14 on the base 1, and then the high-pressure air is closed, so that the vacuum negative pressure fixation of the part with the adjusted posture is realized.
Example 2
The present embodiment has the same structure as that of embodiment 1, except that the number of orifices of the orifices i and ii is eight.
Example 3
The present embodiment has the same structure as that of embodiment 1, except that the number of orifices of the orifices i and ii is sixteen.
Claims (2)
1. The aerostatic supporting self-aligning device is characterized by comprising a base (1), an outer frame (2), an inner frame (3), a rubber pad (4) and a cover plate (5), wherein the inner surface of the base (1) is a spherical surface, and the bottom of the spherical surface is a cylindrical surface; the outer frame (2) and the inner frame (3) are of annular structures, the inner surface of the outer frame (2) is a circular ring surface, and the inner surface of the inner frame (3) consists of a conical surface and a circular ring surface; the connecting relation is that an annular cover plate (5) is arranged at the lower part of the base (1), the base (1) is fixedly connected with the cover plate (5) through screws, and an annular rubber pad (4) is arranged between the base (1) and the cover plate (5); the outer frame (2) is arranged at the upper part of the base (1); the inner frame (3) is arranged on the annular inner side of the outer frame (2) and is connected with the outer frame (2) through screws, and an annular cavity (23) is arranged between the inner annular surface of the outer frame (2) and the outer annular surface of the inner frame (3); the spherical surface of the base (1) is provided with an orifice I (11) and an orifice II (12) which are distributed in an annular way; an air inlet I (13), an air outlet (14) and an annular groove (15) are respectively arranged at the bottom of the base (1), the air inlet I (13) is communicated with the annular groove (15), and the air outlet (14) is communicated with the bottom cylindrical surface of the base (1); the inner frame (3) is provided with an orifice III (31); an air inlet hole II (21) is arranged on the outer frame (2), and the air inlet hole II (21) is communicated with the annular cavity (23); the base (1), the outer frame (2) and the inner frame (3) are concentric; the orifices I (11) and II (12) are correspondingly arranged.
2. An aerostatic self-aligning device as claimed in claim 1 wherein: the number of the orifices I (11) and the number of the orifices II (12) are 8-16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966217.1A CN107559305B (en) | 2017-10-17 | 2017-10-17 | Air static pressure supporting self-aligning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966217.1A CN107559305B (en) | 2017-10-17 | 2017-10-17 | Air static pressure supporting self-aligning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107559305A CN107559305A (en) | 2018-01-09 |
| CN107559305B true CN107559305B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710966217.1A Active CN107559305B (en) | 2017-10-17 | 2017-10-17 | Air static pressure supporting self-aligning device |
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| CN (1) | CN107559305B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094424B (en) * | 2019-05-07 | 2020-08-11 | 哈尔滨工业大学 | Split type static pressure gas bearing device with adjustable swing angle for static balance of rotor |
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| EP0170572A1 (en) * | 1984-07-03 | 1986-02-05 | Robert Affouard | Hydrostatic support systems |
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| DE764876C (en) * | 1936-10-23 | 1953-05-18 | Siemens App | Device for the low-friction storage of precision instruments |
| GB1143960A (en) * | 1966-09-21 | 1969-02-26 | Arneson Harold Elias Grant | Improved hydrostatic bearing |
| US3672733A (en) * | 1970-03-02 | 1972-06-27 | Skf Ind Trading & Dev | Axial bearing |
| GB1385510A (en) * | 1972-01-25 | 1975-02-26 | Hoesch Werke Ag | Hydrostatic supporting arrangements |
| US3761147A (en) * | 1972-01-31 | 1973-09-25 | G Watt | General utility hydrostatic spindle |
| SU593014A1 (en) * | 1974-05-22 | 1978-02-15 | Предприятие П/Я В-8624 | Gas-cushion bearing |
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| US4915510A (en) * | 1986-11-12 | 1990-04-10 | Cellwood Machinery Ab | Hydrostatic thrust bearing system |
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| JP2002100666A (en) * | 2000-09-22 | 2002-04-05 | Yokogawa Electric Corp | Lift for stage |
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| WO2011042438A1 (en) * | 2009-10-05 | 2011-04-14 | Hpt Sinergy S.R.L. | Part holder for parts to be machined with machine tools, particularly for parts having a large mass to be machined in vertical lathes |
| EP2803876A1 (en) * | 2013-05-15 | 2014-11-19 | Mitutoyo Corporation | Rotation transmitter |
| CN104295605A (en) * | 2014-09-23 | 2015-01-21 | 哈尔滨工程大学 | Annular belt compound throttling static-pressure air spherical bearing |
| CN106124310A (en) * | 2016-08-29 | 2016-11-16 | 无锡市海航电液伺服系统股份有限公司 | Combined load measurement apparatus |
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| CN107559305A (en) | 2018-01-09 |
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