CN116379068A - Split type bearing seat assembling method for welding radial air bearing - Google Patents
Split type bearing seat assembling method for welding radial air bearing Download PDFInfo
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- CN116379068A CN116379068A CN202310360906.3A CN202310360906A CN116379068A CN 116379068 A CN116379068 A CN 116379068A CN 202310360906 A CN202310360906 A CN 202310360906A CN 116379068 A CN116379068 A CN 116379068A
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- Prior art keywords
- foil
- stainless steel
- steel sleeve
- welding
- top foil
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000011888 foil Substances 0.000 claims abstract description 152
- 239000010935 stainless steel Substances 0.000 claims abstract description 81
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 81
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- 238000005452 bending Methods 0.000 claims abstract description 15
- 230000008602 contraction Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil and a top foil, wherein the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted in the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a wave foil, the inner side of the wave foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, the wave foil is fixedly connected with the top foil by welding, and the wave foil is fixedly connected with the stainless steel sleeve by welding. The stainless steel sleeve has high strength and good welding stability, and the connection strength after being welded with the top foil is greatly improved; the wave foil and the top foil are fixedly welded, the wave foil and the stainless steel sleeve are fixedly welded, the top foil and the stainless steel sleeve are more firmly connected, the loose top foil can not occur, the displacement of the top foil and the wave foil can be avoided, the stability of forming an air film is ensured, and the stability of the whole bearing is improved.
Description
Technical field:
the invention relates to a split bearing seat assembly method for welding a radial air bearing.
The background technology is as follows:
the radial air bearing supports the spindle to run at high speed by utilizing the compression effect of the air film between the top foil and the spindle, as in the patent application published under number CN214661483U, which discloses a radial foil air dynamic pressure bearing, which mainly consists of an outer bearing seat, a middle wave foil and an inner top foil. Wherein, the one end of top foil is the free end, fixes through the screw between the other end of top foil and the bearing frame, and this kind of structure is poor at long-time during operation stability, and the screw becomes flexible easily, leads to top foil to take place axial and radial displacement, and the air film can't form, loses the supporting effect to the rotor.
In summary, the above-mentioned problems in radial air bearings have become a technical problem to be solved in the industry.
The invention comprises the following steps:
the invention provides a split type bearing seat assembly method for welding a radial air bearing, which solves the problem that the traditional bearing seat and top foil are easy to loosen and displace due to screw fixation.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil and a top foil, wherein the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted in the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a corrugated foil, the inner side of the corrugated foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, and the concrete assembly steps are as follows:
step one: carrying out interference hot fitting between an aluminum base and a stainless steel sleeve;
step two: welding and fixedly connecting the wave foil and the top foil to form a whole;
step three: placing the corrugated foil and the top foil in an inner hole of a stainless steel sleeve, and inserting bending parts at two ends of the top foil into the slots;
step four: and welding and fixedly connecting the corrugated foil and the stainless steel sleeve to complete the whole assembly process.
The split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil and a top foil, wherein the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted in the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a corrugated foil, the inner side of the corrugated foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, and the concrete assembly steps are as follows:
step one: welding and fixedly connecting the wave foil and the top foil to form a whole;
step two: placing the corrugated foil and the top foil in an inner hole of a stainless steel sleeve, and inserting bending parts at two ends of the top foil into the slots;
step three: welding and fixedly connecting the corrugated foil and the stainless steel sleeve;
step four: and carrying out interference hot-filling on the aluminum base and the stainless steel sleeve, and completing the whole assembly process.
The interference hot fitting comprises the steps of firstly heating and expanding the aluminum base, then inserting the stainless steel sleeve into the mounting hole, and after the aluminum base is cooled, realizing interference fit fixed connection of the aluminum base and the stainless steel sleeve according to the principle of thermal expansion and cold contraction.
The slot comprises a groove or a through slot.
The wave foil is a monolithic wave foil.
The fixed end of the wave foil is fixedly connected with the bending part of the fixed end of the top foil in a welding way.
And a welding groove is formed in the side wall of the stainless steel sleeve corresponding to the fixed end of the corrugated foil, and the stainless steel sleeve is fixedly connected with the corrugated foil by welding in the welding groove.
The wave foil is a split wave foil.
The fixed end of the wave foil is fixedly connected with the top foil in a welding way.
And the side wall of the stainless steel sleeve is provided with a welding groove corresponding to the fixed end of each corrugated foil, and the stainless steel sleeve is fixedly connected with each corrugated foil by welding in the welding groove.
The invention adopts the scheme and has the following advantages:
the bearing seat is divided into two parts, namely the aluminum base and the stainless steel sleeve, so that the integral aluminum bearing seat in the past is replaced, the stainless steel sleeve is high in strength and good in welding stability, and the connection strength of the stainless steel sleeve and the top foil after welding is greatly improved; the wave foil and the top foil are fixedly welded, and the wave foil and the stainless steel sleeve are fixedly welded, so that the structure that the top foil and the bearing seat are fixed through screws in the past is replaced, the top foil and the stainless steel sleeve are more firmly connected, the loose top foil is avoided, the displacement of the top foil and the wave foil can be avoided, the stability of an air film is guaranteed, and the stability of the whole bearing is improved.
Description of the drawings:
fig. 1 is a schematic front perspective view of the present invention.
Fig. 2 is a schematic rear perspective view of the present invention.
Fig. 3 is a schematic perspective view of the invention with the base removed.
Fig. 4 is a schematic cross-sectional view of fig. 3.
Fig. 5 is a schematic structural view of the wave foil and top foil of the present invention.
In the figure, 1, an aluminum base, 2, a stainless steel sleeve, 3, a slot, 4, a corrugated foil, 5, a top foil, 6, a bending part, 7 and a welding groove.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
Example 1:
1-5, a split bearing seat assembly method for welding a radial air bearing comprises a bearing seat, a wave foil 4 and a top foil 5, wherein the bearing seat comprises an aluminum base 1 and a stainless steel sleeve 2, a mounting hole is formed in the center of the aluminum base 1, and the stainless steel sleeve 2 is inserted in the mounting hole and fixedly connected with the aluminum base 1 in an interference fit manner; the slot 3 has been seted up along the axial to the lateral wall of stainless steel sleeve 2, and stainless steel sleeve 2 inboard is equipped with ripples foil 4, and ripples foil 4 inboard is equipped with top foil 5, and the both ends of top foil 5 are equipped with respectively and insert the bight 6 in the slot 3, and concrete assembly steps are as follows:
step one: carrying out interference hot fitting between an aluminum base 1 and a stainless steel sleeve 2;
step two: the wave foil 4 and the top foil 5 are welded and fixedly connected to form a whole;
step three: placing the corrugated foil 4 and the top foil 5 in the inner hole of the stainless steel sleeve 2, and inserting the bending parts 6 at the two ends of the top foil 5 into the slots 3;
step four: the corrugated foil 4 and the stainless steel sleeve 2 are welded and fixedly connected, and the whole assembly process is completed.
The materials of the corrugated foil 4 and the top foil 5 adopt GH4169 alloy, and the connection strength of the stainless steel sleeve 2 and the GH4169 alloy after welding is greatly improved.
The aluminum base 1 and the stainless steel sleeve 2 are fixedly connected through interference fit, specifically, the aluminum base 1 is heated and expanded firstly, then the stainless steel sleeve 2 is inserted into a mounting hole, and after the aluminum base 1 is cooled, the aluminum base 1 and the stainless steel sleeve 2 are fixedly connected through interference fit according to the principle of thermal expansion and contraction.
The slot 3 comprises a groove or a through slot. Preferably, the slot 3 is designed as a through slot, so that on one hand, the direct wire cutting is convenient to process, and on the other hand, the through slot can enable the stainless steel sleeve 2 to have certain elastic deformation capability, and the stainless steel sleeve can be connected with the aluminum base 1 more tightly when being hot-set.
The corrugated foil 4 comprises two structural forms, one is an integral corrugated foil and is arranged in an integral annular mode, the bending part of the fixed end of the corrugated foil 4 and the fixed end of the top foil 5 is welded and fixedly connected, a multi-point spot welding or continuous welding mode can be adopted, the inner side of the top foil 5 is directly contacted with a main shaft and cannot be provided with welding spots, the corrugated foil 4 and the stainless steel sleeve 2 cannot be welded and fixed from the inner side, meanwhile, the stainless steel sleeve 2 has a certain thickness, a welding groove 7 is formed in the side wall of the stainless steel sleeve 2 corresponding to the fixed end of the corrugated foil 4, the stainless steel sleeve 2 is fixedly connected with the corrugated foil 4 through welding in the welding groove 7, and the corrugated foil 4 is fixed through welding from the outer side of the stainless steel sleeve 2.
The other is split type corrugated foil, the split type corrugated foil is distributed in an arc-shaped sheet manner, the fixed end of each corrugated foil 4 is fixedly connected with the top foil 5 in a welding way, a multipoint spot welding or continuous welding way can be adopted, the positions, corresponding to the fixed end of each corrugated foil 4, of the side wall of the stainless steel sleeve 2 are respectively provided with a welding groove 7, and the stainless steel sleeve 2 is fixedly connected with each corrugated foil 4 by welding in the welding grooves 7.
The inner surface of the top foil 5 is sprayed with a wear-resistant coating, and the wear-resistant coating comprises a molybdenum disulfide coating, a polytetrafluoroethylene coating or a DLC coating, so that the wear can be reduced, and the service life can be prolonged.
Example 2:
the split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil 4 and a top foil 5, wherein the bearing seat comprises an aluminum base 1 and a stainless steel sleeve 2, a mounting hole is formed in the center of the aluminum base 1, and the stainless steel sleeve 2 is inserted in the mounting hole and fixedly connected with the aluminum base 1 in an interference fit manner; the slot 3 has been seted up along the axial to the lateral wall of stainless steel sleeve 2, and stainless steel sleeve 2 inboard is equipped with ripples foil 4, and ripples foil 4 inboard is equipped with top foil 5, and the both ends of top foil 5 are equipped with respectively and insert the bight 6 in the slot 3, and concrete assembly steps are as follows:
step one: the wave foil 4 and the top foil 5 are welded and fixedly connected to form a whole;
step two: placing the corrugated foil 4 and the top foil 5 in the inner hole of the stainless steel sleeve 2, and inserting the bending parts 6 at the two ends of the top foil 5 into the slots 3;
step three: the corrugated foil 4 is welded and fixedly connected with the stainless steel sleeve 2;
step four: and carrying out interference hot-filling on the aluminum base 1 and the stainless steel sleeve 2 to complete the whole assembly process.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (10)
1. The split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil and a top foil and is characterized in that: the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted into the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a corrugated foil, the inner side of the corrugated foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, and the concrete assembly steps are as follows:
step one: carrying out interference hot fitting between an aluminum base and a stainless steel sleeve;
step two: welding and fixedly connecting the wave foil and the top foil to form a whole;
step three: placing the corrugated foil and the top foil in an inner hole of a stainless steel sleeve, and inserting bending parts at two ends of the top foil into the slots;
step four: and welding and fixedly connecting the corrugated foil and the stainless steel sleeve to complete the whole assembly process.
2. The split bearing seat assembly method for welding the radial air bearing comprises a bearing seat, a wave foil and a top foil and is characterized in that: the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted into the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a corrugated foil, the inner side of the corrugated foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, and the concrete assembly steps are as follows:
step one: welding and fixedly connecting the wave foil and the top foil to form a whole;
step two: placing the corrugated foil and the top foil in an inner hole of a stainless steel sleeve, and inserting bending parts at two ends of the top foil into the slots;
step three: welding and fixedly connecting the corrugated foil and the stainless steel sleeve;
step four: and carrying out interference hot-filling on the aluminum base and the stainless steel sleeve, and completing the whole assembly process.
3. A split bearing housing assembly method for a welded radial air bearing according to claim 1 or 2, wherein: the interference hot fitting comprises the steps of firstly heating and expanding the aluminum base, then inserting the stainless steel sleeve into the mounting hole, and after the aluminum base is cooled, realizing interference fit fixed connection of the aluminum base and the stainless steel sleeve according to the principle of thermal expansion and cold contraction.
4. A split bearing housing assembly method for a welded radial air bearing according to claim 1 or 2, wherein: the slot comprises a groove or a through slot.
5. A split bearing housing assembly method for a welded radial air bearing according to claim 1 or 2, wherein: the wave foil is a monolithic wave foil.
6. The split bearing housing assembly method for a welded radial air bearing of claim 5, wherein: the fixed end of the wave foil is fixedly connected with the bending part of the fixed end of the top foil in a welding way.
7. The split bearing housing assembly method for a welded radial air bearing of claim 5, wherein: and a welding groove is formed in the side wall of the stainless steel sleeve corresponding to the fixed end of the corrugated foil, and the stainless steel sleeve is fixedly connected with the corrugated foil by welding in the welding groove.
8. A split bearing housing assembly method for a welded radial air bearing according to claim 1 or 2, wherein: the wave foil is a split wave foil.
9. The split bearing housing assembly method for a welded radial air bearing of claim 8, wherein: the fixed end of the wave foil is fixedly connected with the top foil in a welding way.
10. The split bearing housing assembly method for a welded radial air bearing of claim 8, wherein: and the side wall of the stainless steel sleeve is provided with a welding groove corresponding to the fixed end of each corrugated foil, and the stainless steel sleeve is fixedly connected with each corrugated foil by welding in the welding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310360906.3A CN116379068B (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat assembling method for welding radial air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310360906.3A CN116379068B (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat assembling method for welding radial air bearing |
Publications (2)
| Publication Number | Publication Date |
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| CN116379068A true CN116379068A (en) | 2023-07-04 |
| CN116379068B CN116379068B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310360906.3A Active CN116379068B (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat assembling method for welding radial air bearing |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51162532U (en) * | 1975-06-19 | 1976-12-24 | ||
| JPH1037922A (en) * | 1996-07-18 | 1998-02-13 | M Ee Fuabutetsuku:Kk | Joining device and joining method for hollow structural angle |
| JP2002061645A (en) * | 2000-08-24 | 2002-02-28 | Kawasaki Heavy Ind Ltd | Dynamic pressure type air bearing |
| US20080205803A1 (en) * | 2007-02-22 | 2008-08-28 | Honda Motor Co., Ltd. | Manufacturing apparatus for a foil bearing |
| KR101632356B1 (en) * | 2016-03-28 | 2016-06-21 | 김민수 | air-foil bearing device for high speed and Heavy-duty possible Maintaining accuracy |
| KR101808008B1 (en) * | 2017-09-19 | 2017-12-11 | 정인환 | Air foil bearing |
| CN109373944A (en) * | 2018-12-04 | 2019-02-22 | 湖南大学 | A kind of air foil bearing air-film thickness measuring system based on ultrasound and method |
| CN109973517A (en) * | 2019-04-12 | 2019-07-05 | 上海优社动力科技有限公司 | A kind of novel radial air foil bearing and preparation method thereof |
| CN214788551U (en) * | 2021-04-16 | 2021-11-19 | 河北金士顿科技有限责任公司 | Radial foil dynamic pressure air bearing with good damping effect |
| CN216882221U (en) * | 2021-12-08 | 2022-07-05 | 华涧新能源科技(上海)有限公司 | Spot welding tool for foil air-floatation radial bearing |
| CN217769703U (en) * | 2022-08-04 | 2022-11-08 | 广东美芝精密制造有限公司 | Gas bearing, motor and high-speed rotating equipment |
-
2023
- 2023-03-31 CN CN202310360906.3A patent/CN116379068B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51162532U (en) * | 1975-06-19 | 1976-12-24 | ||
| JPH1037922A (en) * | 1996-07-18 | 1998-02-13 | M Ee Fuabutetsuku:Kk | Joining device and joining method for hollow structural angle |
| JP2002061645A (en) * | 2000-08-24 | 2002-02-28 | Kawasaki Heavy Ind Ltd | Dynamic pressure type air bearing |
| US20080205803A1 (en) * | 2007-02-22 | 2008-08-28 | Honda Motor Co., Ltd. | Manufacturing apparatus for a foil bearing |
| KR101632356B1 (en) * | 2016-03-28 | 2016-06-21 | 김민수 | air-foil bearing device for high speed and Heavy-duty possible Maintaining accuracy |
| KR101808008B1 (en) * | 2017-09-19 | 2017-12-11 | 정인환 | Air foil bearing |
| CN109373944A (en) * | 2018-12-04 | 2019-02-22 | 湖南大学 | A kind of air foil bearing air-film thickness measuring system based on ultrasound and method |
| CN109973517A (en) * | 2019-04-12 | 2019-07-05 | 上海优社动力科技有限公司 | A kind of novel radial air foil bearing and preparation method thereof |
| CN214788551U (en) * | 2021-04-16 | 2021-11-19 | 河北金士顿科技有限责任公司 | Radial foil dynamic pressure air bearing with good damping effect |
| CN216882221U (en) * | 2021-12-08 | 2022-07-05 | 华涧新能源科技(上海)有限公司 | Spot welding tool for foil air-floatation radial bearing |
| CN217769703U (en) * | 2022-08-04 | 2022-11-08 | 广东美芝精密制造有限公司 | Gas bearing, motor and high-speed rotating equipment |
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| Publication number | Publication date |
|---|---|
| CN116379068B (en) | 2024-06-07 |
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