CN115681338A - Active lubrication ball bearing device actuated by piezoelectric drive - Google Patents
Active lubrication ball bearing device actuated by piezoelectric drive Download PDFInfo
- Publication number
- CN115681338A CN115681338A CN202211344253.1A CN202211344253A CN115681338A CN 115681338 A CN115681338 A CN 115681338A CN 202211344253 A CN202211344253 A CN 202211344253A CN 115681338 A CN115681338 A CN 115681338A
- Authority
- CN
- China
- Prior art keywords
- bearing
- cavity
- outer ring
- micro
- raceway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005461 lubrication Methods 0.000 title abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 239000010687 lubricating oil Substances 0.000 description 10
- 230000001050 lubricating effect Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a piezoelectric-driven actuated active lubrication ball bearing device, which comprises a bearing inner ring, a bearing outer ring, a rolling body and a piezoelectric vibrator, wherein the bearing outer ring is sleeved outside the bearing inner ring; one side of the bearing outer ring, which is positioned on the raceway, is provided with a containing cavity, and one side of the containing cavity, which is close to the raceway, is connected with a micro-spraying cavity in a penetrating manner. According to the active lubrication ball bearing device actuated by piezoelectric driving, the active oil supply device is designed to be embedded, and the lubrication device is embedded in the bearing structure, so that the structure is compact, and the occupied space is small.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to an active lubrication ball bearing device actuated by piezoelectric drive.
Background
The bearing is lubricated mainly by external manual oil supply lubrication, passive oil supply lubrication, active oil supply lubrication and other modes. However, the external manual oil supply lubrication needs to be assembled and disassembled during operation, and because the oil supply is difficult to be timely and accurate due to manual reasons, the efficiency is low, and the operation is inconvenient. The passive oil supply lubricating device has a simple structure and mature technology, but the defects of untimely lubrication, poor controllability and the like are difficult to avoid. The active oil supply lubricating device improves the defects of manual oil supply lubrication and passive oil supply lubrication to a certain extent, and improves the precision, speed and controllability of oil supply, but the active oil supply lubricating device in the prior art is mostly designed to be an external type separated from a bearing structure, and has the defects of large occupied space and insufficient structural compactness.
Disclosure of Invention
The invention aims to provide an active lubrication ball bearing device actuated by piezoelectric drive, wherein an active oil supply device is designed to be embedded, and a lubrication device is embedded in a bearing structure, so that the structure is compact and the occupied space is small.
In order to achieve the purpose, the invention provides a piezoelectric-driven-actuated active lubrication ball bearing device which comprises a bearing inner ring, a bearing outer ring, a rolling body and a piezoelectric vibrator, wherein the bearing outer ring is sleeved on the outer side of the bearing inner ring, an inner ring thread fixing hole which is communicated up and down is formed in the bearing inner ring, an outer ring thread fixing hole which is communicated up and down is formed in the bearing outer ring, a roller path which is communicated up and down is arranged in the middle between the bearing inner ring and the bearing outer ring, the cross section of the roller path is in a convex shape, the corners of the convex shape are both arc transition structures, the rolling body is arranged at the arc transition structure, an accommodating cavity is arranged on one side of the roller path of the bearing outer ring, a micro-jet cavity is connected to one side of the accommodating cavity, which is close to the roller path, the cross section of the micro-jet cavity is in a rectangular shape which is parallel to the roller path, the piezoelectric vibrator is vertically arranged in the accommodating cavity and close to one side of the micro-jet cavity, an oil guide channel is obliquely arranged on one side of the micro-jet cavity, the oil guide channel is communicated with one side of the roller path transition structure, a through hole is arranged at the bottom of the accommodating cavity.
Preferably, the piezoelectric vibrator comprises a piezoelectric ceramic piece and a metal sheet, the metal sheet is vertically arranged on one side, away from the raceway, of the micro-spraying cavity, and the piezoelectric ceramic piece is fixedly connected on one side, away from the micro-spraying cavity, of the metal sheet.
Preferably, the piezoelectric ceramic plate, the metal plate and the micro-spraying cavity are all of an annular structure or a fan-shaped structure.
Preferably, an electric wire connected with the piezoelectric vibrator electrode is arranged in the through wire hole, and the electric wire is communicated with an external driving circuit.
Preferably, the oil guide channel is conical or cylindrical.
Therefore, compared with other active lubricating devices, the active lubricating ball bearing device actuated by piezoelectric driving has the advantages that the oil supply device is designed to be embedded, the lubricating device is embedded in the bearing structure, the structure is compact, the occupied space is small, the device does not need to be assembled and disassembled during lubrication, the active lubricating bearing device actuated by piezoelectric driving drives the piezoelectric vibrator to vibrate, the purpose of spraying liquid drops to a bearing rolling body from a micro-spray cavity is achieved, the active lubricating function of the bearing is realized, the oil supply is timely, the efficiency is high, and the operation is convenient and simple.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of an embodiment of a piezo-electrically actuated actively lubricated ball bearing assembly of the present invention;
FIG. 2 is an enlarged view of a portion of a piezoelectric actuated actively lubricated ball bearing assembly of the present invention after installation of the bearing and shaft bore;
FIG. 3 is a schematic view of a micro-spray cavity of a piezoelectric actuated actively lubricated ball bearing assembly of the present invention;
fig. 4 is a schematic diagram of the operating principle of a piezoelectric vibrator of a piezoelectric-driven-actuated actively-lubricated ball bearing device according to the present invention.
Reference numerals:
1. a bearing inner race; 2. a bearing outer race; 3. a rolling body; 4. a piezoelectric vibrator; 401. piezoelectric ceramic plates; 402. a metal sheet; 5. an inner ring thread fixing hole; 6. an outer ring thread fixing hole; 7. a raceway; 8. a micro-spraying cavity; 9. an oil guide channel; 10. a through hole; 11. an oil filler hole; 12. an external drive circuit; 13. an oil storage device; 14. a receiving cavity.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
Referring to fig. 1 to 4, as shown in the drawings, the present invention provides a piezoelectric-driven-actuated active lubrication ball bearing device, which includes a bearing inner ring 1, a bearing outer ring 2, a rolling element 3, and a piezoelectric vibrator 4, wherein the bearing outer ring 2 is sleeved outside the bearing inner ring 1, an inner ring thread fixing hole 5 which is through up and down is provided on the bearing inner ring 1, an outer ring thread fixing hole 6 which is through up and down is provided on the bearing outer ring 2, and the bearing inner ring 1 and a shaft are detachably linked through the inner ring thread fixing hole 5 to fix the bearing inner ring 1. The bearing outer ring 2 is detachably connected with the bearing seat through the outer ring thread fixing hole 6, and the fixation of the bearing outer ring 2 is guaranteed.
The middle part between the bearing inner ring 1 and the bearing outer ring 2 is provided with a vertically through raceway 7, the cross section of the raceway 7 is in a convex shape, positioning is convenient during assembly, and assembly accuracy is improved. The corners of the convex shapes are all arc transition structures, and the rolling bodies 3 are arranged at the arc transition structures of the roller paths 7. One side of the bearing outer ring 2, which is positioned on the raceway 7, is provided with a containing cavity 14, one side of the containing cavity 14, which is close to the raceway 7, is connected with a micro-spraying cavity 8 in a penetrating manner, the cross section of the micro-spraying cavity 8 is rectangular and parallel to the raceway 7, and the micro-spraying cavity 8 is filled with lubricating oil. The bottom of the accommodating cavity 14 is provided with a through hole 10, an electric wire connected with an electrode of the piezoelectric vibrator 4 is arranged in the through hole 10, the electric wire is communicated with an external driving circuit 12, the driving circuit can control the voltage amplitude and the pulse frequency, and both the voltage amplitude and the pulse frequency can control the spraying performance of the lubricating oil, so that the size and the speed of liquid drops of the sprayed lubricating oil are controlled.
The piezoelectric vibrator 4 is vertically arranged on one side, close to the micro-spraying cavity 8, of the accommodating cavity 14, the piezoelectric vibrator 4 comprises a piezoelectric ceramic piece 401 and a metal sheet 402, the metal sheet 402 is vertically arranged on one side, far away from the raceway 7, of the micro-spraying cavity 8, the width of the cross section of the micro-spraying cavity is about 0.5mm, the piezoelectric ceramic piece 401 is fixedly connected to one side, far away from the micro-spraying cavity 8, of the metal sheet 402, and the piezoelectric ceramic piece 401 is fixedly connected with the metal sheet 402 through a bonding agent. The piezoelectric ceramic plate 401, the metal sheet 402 and the micro-spraying cavity 8 are all of an annular structure, and the piezoelectric ceramic plate 401 and the metal sheet 402 can also be formed by surrounding a plurality of sectors at one side of the micro-spraying cavity 8. After being electrified, the piezoelectric ceramic plate 401 generates bending vibration under the periodic excitation of an external circuit, forms pulsating sound pressure in the micro-spray cavity 8, and extrudes lubricating oil in the micro-spray cavity 8.
One side of the micro-spraying cavity 8 is obliquely provided with a plurality of oil guide channels 9, the oil guide channels 9 are communicated with one side of the circular arc transition structure of the roller path 7, each oil guide channel 9 is conical or cylindrical, the oil inlet end of each oil guide channel 9 is arranged on the inner wall of the micro-spraying cavity 8, the distance between each oil guide channel 9 and the metal sheet 402 is 0.5mm, and extruded lubricating oil is sprayed onto the rolling bodies 3 in the roller path 7 through the oil guide channels 9, so that the self-lubricating function of the bearing is realized. The oil-guiding channel 9 can be provided either on the raceway 7 or in the bearing-side region close to the raceway 7.
The bottom of the micro-spraying cavity 8 is also provided with a plurality of oil injection holes 11, the oil injection holes 11 are directly connected with an external oil storage device 13 to supply oil to the micro-spraying cavity 8, and the micro-spraying cavity is mounted on a shaft. After the lubricating oil in the micro-spraying cavity 8 is sprayed and reduced through the oil guide channel 9, the lubricating oil in the oil storage device 13 immediately enters the micro-spraying cavity 8 through the oil injection hole 11 for supplement, so that the condition that the lubricating oil in the micro-spraying cavity 8 is used up is avoided.
The specific work engineering is as follows: when the bearing needs to be lubricated, the driving circuit is started, the driving circuit controls the voltage amplitude and the pulse frequency, so that the piezoelectric ceramic piece is driven to vibrate, the metal sheet is driven to vibrate by the piezoelectric ceramic piece, the metal sheet vibrates in the micro-spraying cavity, lubricating oil in the micro-spraying cavity is extruded, the extruded lubricating oil is sprayed onto a rolling body in the roller path through the oil guide channel, and the self-lubricating function of the bearing is achieved.
Therefore, the piezoelectric driving actuated active lubrication ball bearing device adopting the structure has the advantages that the integral oil supply device and the bearing structure are integrated, the oil supply device is arranged in the bearing structure, the structure is compact, the occupied space is small, the device does not need to be assembled or disassembled during lubrication, the oil supply is timely, the efficiency is high, and the operation is convenient and simple.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (5)
1. A piezoelectric actuated actively lubricated ball bearing device, characterized by: the bearing comprises a bearing inner ring, a bearing outer ring, a rolling body and a piezoelectric vibrator, wherein the bearing outer ring is sleeved on the outer side of the bearing inner ring, an inner ring thread fixing hole which is communicated up and down is formed in the bearing inner ring, an outer ring thread fixing hole which is communicated up and down is formed in the bearing outer ring, a roller path which is communicated up and down is arranged in the middle between the bearing inner ring and the bearing outer ring, the cross section of the roller path is in a convex shape, the corners of the convex shape are both arc transition structures, and the rolling body is arranged at the arc transition structures;
the bearing outer ring is located one side of raceway is provided with and holds the chamber, it is close to hold the chamber one side of raceway is passed through mutually and is connected with the cavity of spouting a little, spout the cross section of cavity a little for with raceway parallel arrangement's rectangle, the vertical setting of piezoelectric vibrator is in it is close to hold the intracavity spout one side of cavity a little, it is provided with the slope and sets up the oil guide channel to spout one side of cavity a little, the oil guide channel with one side of raceway circular arc transition structure communicates with each other, the bottom that holds the chamber is provided with through-wire hole, the bottom of spouting the cavity a little is provided with the oil filler point.
2. A piezo-electrically actuated actively lubricated ball bearing device according to claim 1, wherein: the piezoelectric vibrator comprises a piezoelectric ceramic piece and a metal sheet, wherein the metal sheet is vertically arranged on one side, away from the raceway, of the micro-spraying cavity, and the piezoelectric ceramic piece is fixedly connected to one side, away from the metal sheet, of the micro-spraying cavity.
3. A piezo-electrically actuated actively lubricated ball bearing device according to claim 2, wherein: the piezoelectric ceramic piece, the metal sheet and the micro-spraying cavity are all of an annular structure or a fan-shaped structure.
4. A piezo-electrically actuated actively lubricated ball bearing device according to claim 1, wherein: and an electric wire connected with the piezoelectric vibrator electrode is arranged in the through wire hole and is communicated with an external driving circuit.
5. A piezo-electrically actuated actively lubricated ball bearing device according to claim 1, wherein: the oil guide channel is conical or cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211344253.1A CN115681338A (en) | 2022-10-31 | 2022-10-31 | Active lubrication ball bearing device actuated by piezoelectric drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211344253.1A CN115681338A (en) | 2022-10-31 | 2022-10-31 | Active lubrication ball bearing device actuated by piezoelectric drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115681338A true CN115681338A (en) | 2023-02-03 |
Family
ID=85045840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211344253.1A Pending CN115681338A (en) | 2022-10-31 | 2022-10-31 | Active lubrication ball bearing device actuated by piezoelectric drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115681338A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004316707A (en) * | 2003-04-14 | 2004-11-11 | Koyo Seiko Co Ltd | Bearing device |
| CN102322404A (en) * | 2011-05-31 | 2012-01-18 | 欣达重工股份有限公司 | Direct driving type wind driven generator with double motors |
| JP2012072851A (en) * | 2010-09-29 | 2012-04-12 | Ntn Corp | Lubricating device for rolling bearing |
| CN107605955A (en) * | 2017-10-24 | 2018-01-19 | 无锡民联汽车零部件有限公司 | Lubricating oil evenly distributes profile shaft and held |
| CN110185909A (en) * | 2019-05-28 | 2019-08-30 | 哈尔滨工业大学 | A kind of micro- redundancy lubricating structure of bearing active based on radial piezoelectric vibration actuating |
| US20190383300A1 (en) * | 2018-06-14 | 2019-12-19 | Shimadzu Corporation | Vacuum pump |
| DE102020205370A1 (en) * | 2020-04-28 | 2021-10-28 | Thyssenkrupp Ag | Rotor bearing for a wind turbine and wind turbine |
| CN216922851U (en) * | 2021-11-30 | 2022-07-08 | 江阴品之德轴承有限公司 | Weaving machine bearing with good wear-resisting effect |
-
2022
- 2022-10-31 CN CN202211344253.1A patent/CN115681338A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004316707A (en) * | 2003-04-14 | 2004-11-11 | Koyo Seiko Co Ltd | Bearing device |
| JP2012072851A (en) * | 2010-09-29 | 2012-04-12 | Ntn Corp | Lubricating device for rolling bearing |
| CN102322404A (en) * | 2011-05-31 | 2012-01-18 | 欣达重工股份有限公司 | Direct driving type wind driven generator with double motors |
| CN107605955A (en) * | 2017-10-24 | 2018-01-19 | 无锡民联汽车零部件有限公司 | Lubricating oil evenly distributes profile shaft and held |
| US20190383300A1 (en) * | 2018-06-14 | 2019-12-19 | Shimadzu Corporation | Vacuum pump |
| CN110185909A (en) * | 2019-05-28 | 2019-08-30 | 哈尔滨工业大学 | A kind of micro- redundancy lubricating structure of bearing active based on radial piezoelectric vibration actuating |
| DE102020205370A1 (en) * | 2020-04-28 | 2021-10-28 | Thyssenkrupp Ag | Rotor bearing for a wind turbine and wind turbine |
| CN216922851U (en) * | 2021-11-30 | 2022-07-08 | 江阴品之德轴承有限公司 | Weaving machine bearing with good wear-resisting effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7883271B2 (en) | Rolling bearing device and rotary apparatus | |
| EP2165771B1 (en) | Liquid spray device | |
| US20070051827A1 (en) | Spraying device | |
| KR20070083741A (en) | Rolling bearing device and spindle | |
| EP2065062A1 (en) | Syringe pump | |
| KR20050054939A (en) | Bearing device | |
| KR20030024698A (en) | Method and apparatus for maintaining control of liquid flow in a vibratory atomizing device | |
| CN102365132A (en) | Atomizing unit and atomizer provided with same | |
| WO2006064858A1 (en) | Rolling bearing device | |
| CN115681338A (en) | Active lubrication ball bearing device actuated by piezoelectric drive | |
| JP2012011304A (en) | Atomizer apparatus | |
| CN115681337A (en) | Active lubrication roller bearing device actuated by piezoelectric drive | |
| CN108194516A (en) | Rolling bearing system, oil supply unit, the supply method of lubricating oil and program | |
| JP2007309472A (en) | Rolling bearing device | |
| CN106885120B (en) | A kind of micro injection lubricating arrangement of diaphragm seal formula Piezoelectric Driving | |
| WO2016152797A1 (en) | Bearing device and machinery | |
| CN114029201B (en) | Compact type injection dispensing valve with adjustable glue output and glue injection method thereof | |
| KR102655632B1 (en) | Bearing devices and mechanical devices | |
| KR20070010406A (en) | Robot control apparatus for screw driving system | |
| CA2151177A1 (en) | Air controller for air pump | |
| US10240636B2 (en) | Rolling bearing device and oil supply unit | |
| KR200400982Y1 (en) | Robot control apparatus for screw driving system | |
| JP2001059559A (en) | Ball screw device | |
| CN220444188U (en) | Eccentric mechanism of spraying gun | |
| JP2007198166A (en) | Liquid material supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |