CN111927884B - Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole - Google Patents
Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole Download PDFInfo
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- CN111927884B CN111927884B CN202010802876.3A CN202010802876A CN111927884B CN 111927884 B CN111927884 B CN 111927884B CN 202010802876 A CN202010802876 A CN 202010802876A CN 111927884 B CN111927884 B CN 111927884B
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- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
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- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
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- 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
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic bearings
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- 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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
- F16C2202/40—Magnetic
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- 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
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/70—Coating surfaces by electroplating or electrolytic coating, e.g. anodising, galvanising
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic-liquid double-suspension bearing flux sleeve with a bionic non-smooth surface and an oil through hole, which belongs to the field of bearings and comprises a flux sleeve body, wherein the flux sleeve body is a revolving body, and an oil through hole for oil to flow through and a main shaft through hole for a main shaft to pass through are processed on the flux sleeve body along the axial direction, and the magnetic-liquid double-suspension bearing flux sleeve is characterized in that: the oil through hole channels are distributed on two concentric circles, and bionic non-smooth unit bodies are uniformly distributed on the circumferential surface of the magnetic sleeve body. The bionic non-smooth unit body comprises a concave pit, a fish scale pattern and a groove or a convex hull structure, friction between the bionic non-smooth unit body and oil in the high-speed rotation process of the bearing is reduced by adopting the bionic structure, the flowing speed of the oil is reduced, the turbulence degree of the oil in the flowing process is reduced, the oil in dead zones at two ends of the magnetic conductive sleeve flows through the oil through hole, heat generated by the magnetic conductive sleeve can be taken away, the temperature rise of the magnetic conductive sleeve is reduced, and the service life of the magnetic conductive sleeve is prolonged.
Description
Technical Field
The invention relates to the field of bearings, in particular to a magnetic-liquid double-suspension bearing flux sleeve with a bionic non-smooth surface and an oil through hole.
Background
With the continuous development of the technology, the traditional bearing can not meet the production requirement. The magnetic-liquid double-suspension bearing has the advantages of large rigidity, convenience in adjustment and control and the like, so that the magnetic-liquid double-suspension bearing is continuously developed. However, because the oil has a certain viscosity, when the high-speed rotating bearing spindle drives the oil to move at a high speed, the oil flows disorderly, and even the oil in the static pressure bearing cavity is thrown out, which causes instability of the static pressure bearing. Moreover, because the two suspension bearing main shafts of magnetic fluid are at rotatory in-process, the magnetic conductive sleeve constantly takes place the magnetization with the coil on the stator, and magnetism is changing constantly for iron loss increases, and the eddy current loss increases, and calorific capacity of bearing magnetic conductive sleeve promotes, and the temperature is too high, and the fluid mobility that is in the magnetic conductive sleeve both ends is relatively poor, and the unable timely cooling heat dissipation to the magnetic conductive sleeve influences the normal use of the two suspension bearing of magnetic fluid. Therefore, the invention improves the structure of the magnetic-liquid double-suspension bearing magnetic conductive sleeve and researches a magnetic-liquid double-suspension bearing magnetic conductive sleeve with a bionic non-smooth surface and an oil through hole.
Disclosure of Invention
According to the problems existing in the prior art, the invention provides the magnetic liquid double-suspension bearing magnetic sleeve which can reduce friction and reduce heating.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a two bearing flux sleeves that suspend of magnetic fluid with bionical non-smooth surface and oil through hole, includes the flux sleeve body, the flux sleeve body be the solid of revolution, along the main shaft through-hole that axial direction processing has the logical oil pore that confession fluid flowed through and supplies the main shaft to pass on the flux sleeve body, its characterized in that: the oil through hole channels are distributed on two concentric circles, and bionic non-smooth unit bodies are uniformly distributed on the circumferential surface of the magnetic sleeve body.
The technical scheme of the invention is further improved as follows: the bionic non-smooth surface unit body comprises a concave pit, a convex hull, a fish scale pattern and a groove.
The technical scheme of the invention is further improved as follows: the bionic non-smooth unit bodies are pit-shaped, and the pit-shaped bionic units are uniformly distributed on the circumferential surface of the magnetic sleeve main body in an array shape.
The technical scheme of the invention is further improved as follows: the shape of the pit includes a cylinder, an elliptical table, and an elliptical cylinder.
The technical scheme of the invention is further improved as follows: the oil through hole comprises a straight hole and a spiral hole, the axis of the straight hole oil through hole is parallel to the axis of the magnetic sleeve body, the spiral direction of the spiral oil through hole is the same as the rotation direction of the magnetic sleeve, and the number of the inner circle oil through hole and the outer circle oil through hole is the same.
The technical scheme of the invention is further improved as follows: the diameter range of the oil through hole is 3-4 mm, and the circle centers of the concentric circles of the two circles of oil through holes are superposed with the circle center of the cross section of the magnetic sleeve.
The technical scheme of the invention is further improved as follows: the circumferential surface of the main body of the magnetic sleeve is plated with a layer of metal chromium.
Due to the adoption of the technical scheme, the invention has the following technical effects:
when the magnetic-liquid double-suspension bearing works, the magnetic conductive sleeve reduces friction with oil under the action of the bionic non-smooth unit bodies on the circumferential surface, reduces the speed of the oil on a contact layer with the magnetic conductive sleeve, reduces the turbulence degree of the oil and reduces heat generated on the surface of the magnetic conductive sleeve. Meanwhile, due to the existence of the end face through hole, the flow of oil in dead areas on two sides of the two oil through holes is accelerated, the heat of the magnetic conductive sleeve is taken away in the process that the oil flows through the through hole, the cooling speed of the magnetic conductive sleeve is accelerated, and the service life of the magnetic-liquid double-suspension bearing is prolonged. The surface of the magnetic conduction sleeve is plated with metal chromium, so that the magnetic conduction sleeve is prevented from being corroded and rusted in the long-term contact process with oil.
Drawings
FIG. 1 is a schematic view of a bionic non-smooth surface flux sleeve of the present invention;
FIG. 2 is a front view of a bionic non-smooth surface flux sleeve of the present invention;
FIG. 3 is a side view of a biomimetic non-smooth surface flux sleeve of the present invention;
FIG. 4 is a cross-sectional view of a bionic non-smooth surface flux sleeve of the present invention;
FIG. 5 is an enlarged view at I of FIG. 4 according to the present invention;
FIG. 6 is a schematic view of a magnetic-fluid double suspension bearing of the present invention;
FIG. 7 is a cross-sectional view of a magnetic-fluid double suspension bearing of the present invention;
FIG. 8 is a schematic view of the scale-shaped bionic non-smooth flux sleeve of the present invention;
FIG. 9 is a side view of the scale-textured biomimetic non-smooth flux sleeve of the present invention;
FIG. 10 is an enlarged view in partial cross-section of FIG. 8 of the present invention;
FIG. 11 is a schematic view of a groove bionic non-smooth surface flux sleeve of the present invention;
FIG. 12 is a front view of the grooved biomimetic non-smooth surfaced flux sleeve of the present invention;
FIG. 13 is an enlarged view of the invention at point II of FIG. 12;
FIG. 14 is a schematic view of a spiral oil passage bionic non-smooth surface flux sleeve of the present invention;
FIG. 15 is a side half sectional view of a spiral oil passage bionic non-smooth surface flux sleeve of the present invention;
FIG. 16 is a cross-sectional view of an elliptical cylinder pit unit body of the present invention;
FIG. 17 is a cross-sectional view of an elliptical dimple cell body in accordance with the present invention;
FIG. 18 is a cross-sectional view of a semi-ellipsoidal convex hull unit body of the present invention;
FIG. 19 is a cross-sectional view of a unit body of a truncated cone-shaped convex hull according to the present invention;
wherein: 1. the magnetic conductive sleeve comprises a magnetic conductive sleeve main body, 2 parts of an oil through hole, 3 parts of a main shaft through hole, 4 parts of a concave pit, 5 parts of a plating layer, 6 parts of a sealing cover, 7 parts of an end cover, 8 parts of a main shaft, 9 parts of an oil pipe joint, 11 parts of a stator, 12 parts of an O-shaped sealing ring, 13 parts of a lip-shaped sealing ring, 14 parts of a fixing nut, 15 parts of a coil, 16 parts of a fish scale pattern, 17 parts of a groove, 18 parts of an elliptic cylindrical concave pit, 19 parts of an elliptic table-shaped concave pit, 20 parts of a semielliptic convex hull, 21 parts of a circular table-shaped convex hull.
Detailed description of the invention
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, the magnetic-fluid double-suspension bearing flux sleeve with a bionic non-smooth surface and an oil through hole of the invention comprises a flux sleeve main body 1, wherein the flux sleeve main body 1 is a revolving body, an oil through hole 2 for oil to flow through and a main shaft through hole 3 for a main shaft to pass through are processed on the flux sleeve main body 1 along the axial direction, the oil through hole 2 is provided with two circles, the centers of the two circles of oil through holes 2 are distributed in concentric circles, and bionic non-smooth unit bodies are uniformly distributed on the circumferential surface of the flux sleeve main body 1. The axis of the main shaft through hole 3 coincides with the axis of the magnetic conductive sleeve main body 1, the magnetic conductive sleeve is integrally in a circular ring shape, and the circle centers of the concentric circles of the two circles of oil through holes 2 coincide with the circle center of the magnetic conductive sleeve 1. When the flux sleeve rotates, oil in dead zones on two sides flows to the other side of the flux sleeve from one side through the oil through hole 2, the problem that the oil is trapped in the dead zones is solved, and moreover, the flux sleeve is continuously magnetized in the high-speed rotating process, so that the iron loss is large, the heat productivity is increased, the heat generated in the rotating process of the flux sleeve is also taken away by the flowing of the oil, the heat generated in the flux sleeve is reduced, and the temperature rise of the flux sleeve is slowed down.
As shown in fig. 3-5, magnetic permeabilityBionic pits 4 are uniformly distributed on the circumferential surface of the sleeve main body 1, the depth of each pit is 0.05mm, and the bottom area of each pit is 1mm2The pits are distributed on the circumferential surface in a circumferential array, and the circumferential surface of the magnetic conduction sleeve processed with the bionic pits 4 is plated with a plating layer 5, so that the magnetic conduction sleeve is prevented from rusting in the contact process with oil liquid, and the service life of the magnetic conduction sleeve is prevented from being influenced.
As shown in fig. 6 and 7, the magnetic-hydraulic double-suspension bearing applied to the flux sleeve of the present invention includes an end cap 7, a sealing cap 6, a coil 15, a stator 11, an oil pipe joint 9, a lip seal 13, an O-ring 12, a main shaft 8, a fixing bolt 14, and a flux sleeve main body 1 of the present invention, wherein, a winding post and a through hole for oil to enter and exit are processed on the stator 11, a coil 15 is wound on the winding post, an oil pipe joint 9 is arranged on the through hole for oil to enter and exit, when the magnetic-liquid double-suspension bearing is installed, the main shaft 8 penetrates through the main shaft through hole 3 of the magnetic sleeve, the two sides of the main shaft are fixed by the fixing nuts 14 to prevent the magnetic sleeve from moving along the axial direction, the main shaft 8 provided with the magnetic sleeve main body 1 penetrates through the inner annular surface of the stator 11 wound with the coil 15, the end covers 7 are installed on the two side surfaces of the stator 11 and are fixed by bolts, after the lip seal 13 has been passed over the spindle 8, the cover 6 is fixed to the respective end cap 7.
When the magnetic-liquid double-suspension bearing works, oil flows in from the oil inlet duct and flows through the slit between the magnetic conductive sleeve and the inner annular surface of the stator winding post to form a large fluid resistance, so that a static pressure supporting force is formed, the energized coil and the magnetic conductive sleeve are continuously magnetized to form an electromagnetic supporting force, and the static pressure supporting force and the electromagnetic supporting force act together to support the spindle of the magnetic-liquid double-suspension bearing.
As shown in fig. 8-10, the bionic non-smooth surface is a scale-shaped bionic non-smooth surface, the circumferential surface of the flux sleeve is uniformly processed with scale-shaped patterns 16, the circular end surface is processed with oil through holes 2 and main shaft through holes 3, wherein the distribution mode of the oil through holes is the same as that of the concave-pit-shaped bionic non-smooth flux sleeve. The plating layer 5 is formed on the circumferential surface after the fish scale pattern is formed.
As shown in fig. 11-13, the flux sleeve is a groove-shaped bionic non-smooth surface flux sleeve, the arrangement mode of the oil through holes of the flux sleeve is the same as the shape of fish scale or pits, the oil through holes are all parallel to the axial direction, inverted triangle-shaped grooves 17 are evenly arranged on the circumferential surface, the direction of the grooves is parallel to the axial direction of the flux sleeve, the length of the grooves is the same as that of the flux sleeve, a coating is plated on the circumferential surface on which the grooves are processed, and the flux sleeve is prevented from rusting in the contact process of the flux sleeve and oil to influence the service life of the flux sleeve.
As shown in fig. 14 and 15, the flux sleeve is a bionic non-smooth surface flux sleeve with a spiral oil through hole, wherein the bionic non-smooth unit body is arranged as the above, and comprises a concave pit, a convex hull, a fish scale pattern and a groove, the oil through hole is designed to be spiral, and the rotation direction of the spiral line is the same as the rotation direction of the bearing.
As shown in fig. 16 to 19, the pits on the surface of the flux sleeve may be not only cylindrical, but also elliptical cylindrical pits, elliptical truncated-cone pits, and convex-bag-shaped bionic non-smooth surfaces.
Claims (4)
1. The utility model provides a two bearing flux sleeves that suspend of magnetic fluid with bionical non-smooth surface and oil through hole, includes flux sleeve main part (1), flux sleeve main part (1) be the solid of revolution, flux sleeve main part (1) goes up and has oil through hole (2) that supply fluid to flow through and main shaft through-hole (3) that supply the main shaft to pass along axial direction processing, its characterized in that: the oil through hole channels (2) are distributed on two concentric circles, bionic non-smooth unit bodies are uniformly distributed on the circumferential surface of the magnetic sleeve main body (1), and the bionic non-smooth surface unit bodies are pits, convex hulls, fish scale patterns or grooves; the oil through hole (2) is a straight hole or a spiral hole, the axis of the straight hole oil through hole (2) is parallel to the axis of the magnetic conductive sleeve main body (1), the spiral direction of the spiral oil through hole (2) is the same as the rotation direction of the magnetic conductive sleeve, and the number of the inner circle oil through hole (2) and the outer circle oil through hole (2) is the same; the circumferential surface of the magnetic sleeve main body (1) is plated with a layer of metal chromium.
2. The magnetic-fluid double-suspension bearing flux sleeve with the bionic non-smooth surface and the oil through hole as claimed in claim 1, is characterized in that: the bionic non-smooth unit bodies are pit-shaped, and the pit-shaped bionic units are uniformly distributed on the circumferential surface of the magnetic sleeve main body (1) in an array shape.
3. The magnetic-hydraulic double-suspension bearing flux sleeve with the bionic non-smooth surface and the oil through hole as claimed in claim 2, wherein: the shape of the pit (4) is a cylinder, an elliptic table or an elliptic cylinder.
4. The magnetic-fluid double-suspension bearing flux sleeve with the bionic non-smooth surface and the oil through hole as claimed in claim 1, wherein: the diameter range of the oil through hole (2) is 3-4 mm, and the circle centers of the concentric circles of the two circles of oil through holes (2) are superposed with the circle center of the cross section of the magnetic sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802876.3A CN111927884B (en) | 2020-08-11 | 2020-08-11 | Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802876.3A CN111927884B (en) | 2020-08-11 | 2020-08-11 | Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole |
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| Publication Number | Publication Date |
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| CN111927884A CN111927884A (en) | 2020-11-13 |
| CN111927884B true CN111927884B (en) | 2022-06-07 |
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| CN202010802876.3A Active CN111927884B (en) | 2020-08-11 | 2020-08-11 | Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112727922B (en) * | 2020-12-24 | 2022-11-08 | 北华航天工业学院 | Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance |
| CN117467962B (en) * | 2023-12-28 | 2024-03-08 | 上海陛通半导体能源科技股份有限公司 | Thin film deposition apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
| CN104863781A (en) * | 2015-05-29 | 2015-08-26 | 杭州电子科技大学 | Low-speed large-torque water hydraulic motor with bionic non-smooth surface texture |
| CN111022497A (en) * | 2019-12-02 | 2020-04-17 | 燕山大学 | Radial magnetic-liquid double-suspension bearing magnetic conductive sleeve with liquid guide pore channel |
| CN111237340A (en) * | 2020-01-14 | 2020-06-05 | 燕山大学 | Radial electromagnetic repulsion type magnetic-liquid double-suspension bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3657312B2 (en) * | 1995-06-30 | 2005-06-08 | 光洋精工株式会社 | Magnetic bearing type spindle device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
| CN104863781A (en) * | 2015-05-29 | 2015-08-26 | 杭州电子科技大学 | Low-speed large-torque water hydraulic motor with bionic non-smooth surface texture |
| CN111022497A (en) * | 2019-12-02 | 2020-04-17 | 燕山大学 | Radial magnetic-liquid double-suspension bearing magnetic conductive sleeve with liquid guide pore channel |
| CN111237340A (en) * | 2020-01-14 | 2020-06-05 | 燕山大学 | Radial electromagnetic repulsion type magnetic-liquid double-suspension bearing |
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