CN114734305A - Magnetorheological polishing solution recoverer with air-magnetic sealing combination - Google Patents
Magnetorheological polishing solution recoverer with air-magnetic sealing combination Download PDFInfo
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- CN114734305A CN114734305A CN202210443383.4A CN202210443383A CN114734305A CN 114734305 A CN114734305 A CN 114734305A CN 202210443383 A CN202210443383 A CN 202210443383A CN 114734305 A CN114734305 A CN 114734305A
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- shaped groove
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- magnetorheological
- magnetorheological polishing
- air pressure
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- 238000005498 polishing Methods 0.000 title claims abstract description 121
- 238000007789 sealing Methods 0.000 title claims description 11
- 238000011084 recovery Methods 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims description 46
- 239000012530 fluid Substances 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000004064 recycling Methods 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 230000009471 action Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005426 magnetic field effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a magneto-rheological polishing solution recoverer with gas-magnetic seal combination, which comprises: the lower end of the recovery cover is provided with a first U-shaped groove and a second U-shaped groove which are adjacent, and the inner wall of the second U-shaped groove, which is adjacent to the first U-shaped groove, is provided with an air pressure hole; and the air flow channel of the air pressure device is sequentially communicated with the second U-shaped groove and the air pressure hole so as to blow compressed air to the surface of the magnet layer. The air pressure hole is exposed on the surface of the magnet layer, and the magnetorheological polishing solution attached to the surface of the magnet layer is blown away to be collected to the drainage hole of the recovery cavity and flows into the drainage tube, so that on one hand, the magnetorheological polishing solution is prevented from flowing out of the recovery cover due to unstable factors, the recovery rate is improved, on the other hand, the phenomenon that the magnetorheological polishing solution attached to the surface of the magnet layer generates ribbon hardening due to the action of a magnetic field, the polishing wheel is abraded, the factors influencing the processing precision of a workpiece are reduced, and meanwhile, the recovery efficiency and the stability of the magnetorheological polishing solution are improved.
Description
Technical Field
The invention relates to the field of ultraprecise processing of optical elements, in particular to a magnetorheological polishing solution recoverer with air-magnetic sealing combination.
Background
Magnetorheological polishing is a polishing technology with small subsurface damage and good removal stability, is mature and commercialized at present, and plays an important role in the technical field of precision optical polishing. The basic principle of the magnetorheological polishing technology is to polish by utilizing the rheological property of the magnetorheological fluid in a magnetic field. When flowing through a high-strength gradient magnetic field, the magnetorheological fluid becomes hard, becomes viscous, becomes a bigham medium with viscoplasticity, and forms ribbon protrusions. When the medium flows through the surface of a workpiece, a large shearing force is generated, so that the aim of removing materials is fulfilled; after leaving the magnetic field, it becomes a flowing liquid again. However, there are still many deficiencies to the existing magnetorheological fluid technology for recovering the leaving magnetic field area, such as: the defects of incomplete recovery, inclined side leakage of the magnetorheological polishing wheel and abrasion of the magnetorheological polishing wheel exist.
The Chinese literature patent library discloses an invention patent CN 101249637A of the national defense science and technology university, which designs an internal hollow recovery device, and the edge of a recovery head of the device is embedded with an annular permanent magnet, so that compared with the situation that a copper sheet is in contact with a polishing wheel to block the magnetorheological polishing liquid from flowing and recovering, the surface quality and the roundness of the polishing wheel are prevented from being influenced by friction and scratching the surface of the polishing wheel. However, the device has a large gap with the drum-shaped polishing wheel, so that the polishing solution cannot be completely recycled; the magnetic field formed by the permanent magnet can harden the magnetorheological polishing liquid, and the abrasion to the magnetorheological polishing wheel is aggravated.
The invention patent CN 201610833949 of the institute of mechanical manufacturing technology of China institute of engineering and physics proposes that a shielding layer is wrapped around a permanent magnet, so that the magnetic field intensity is weakened, and the abrasion of the magnetorheological polishing wheel caused by the hardening of magnetorheological polishing liquid under the action of the magnetic field is reduced. Meanwhile, the lower end face of the recoverer is designed into a curved surface which is attached to the drum-shaped magnetorheological polishing wheel, so that a gap between the magnetorheological polishing liquid recoverer and the magnetorheological polishing wheel is reduced, and leakage of magnetorheological polishing liquid is reduced. However, the recoverer needs to be attached to the polishing wheel, so that the problem of high installation difficulty exists, the liquid guide pipe needs to be positioned in the middle of the magnetorheological fluid ribbon, and incomplete recovery can be caused by slight inclination of the polishing wheel. In addition, the magnetorheological polishing fluid can be hardened to cause abrasion to the magnetorheological polishing wheel.
The invention patent CN 111482854A of the institute of mechanical manufacturing technology of the Chinese institute of engineering and physics has a slit at the back half of the recovery cavity of the recoverer, which makes the recovery cavity of the recoverer filled up quickly, blocks the recovery hole, and pumps away the magnetorheological fluid under the action of negative pressure, thus improving the recovery stability and reducing the accuracy requirement of installation. However, the magnetic field created by the permanent magnets in the shield layer can still cause wear to the magnetorheological finishing wheel due to magnetorheological hardening. In the actual use process, the magnetorheological polishing wheel is inclined, and the phenomena of incomplete recovery and liquid leakage still occur. Therefore, the design of the magnetorheological fluid recoverer needs to be improved, the stability of the recovery process is improved, and the problem of abrasion of the magnetorheological polishing wheel is solved essentially.
Disclosure of Invention
In order to solve the technical problems that the magnetorheological fluid hardens to cause abrasion to the polishing wheel and the recovery is unstable, the invention provides the technical scheme of the magnetorheological polishing fluid recoverer with the combination of air and magnetic seals, so that the abrasion to the polishing wheel caused by the hardening of the magnetorheological fluid adsorbed in a magnetic field action area is avoided, and meanwhile, the recoverer is more attached to the polishing wheel to avoid the leakage of the magnetorheological fluid.
The invention provides a magnetorheological polishing solution recoverer with air-magnetic sealing combination, which comprises: the magnetorheological polishing fluid recycling device comprises a recycling cover, a liquid guide pipe and an air pressure device, wherein the liquid guide pipe and the air pressure device are arranged at the upper end of the recycling cover and are fixedly connected with the recycling cover, and the recycling cover is arranged opposite to a polishing wheel so as to recycle magnetorheological polishing fluid; the lower end of the recovery cover is provided with a first U-shaped groove and a second U-shaped groove which are adjacent, the inner ring of the first U-shaped groove forms a recovery cavity along the circumferential direction, and the top wall of the inner cavity of the recovery cavity is provided with a drainage hole communicated with the liquid guide pipe; a magnet layer is embedded in the first U-shaped groove, an air pressure hole is formed in the inner wall of the second U-shaped groove adjacent to the first U-shaped groove, and the air pressure hole is exposed out of the magnet layer; and an air flow channel of the air pressure device is sequentially communicated with the second U-shaped groove and the air pressure hole so as to blow compressed air to the surface of the magnet layer.
The air pressure device is arranged on the recovery cover to blow away the adsorbed magnetorheological polishing liquid in the magnetic field area, so that the phenomenon that the magnetorheological polishing liquid becomes hard under the action of a magnetic field to abrade the polishing wheel is avoided, and factors influencing the processing precision of a workpiece are reduced; meanwhile, the magnetorheological polishing solution can be converged near the drainage hole by the airflow, so that a better recovery effect is achieved.
Preferably, the magnet layer includes a permanent magnet and pure iron, and the pure iron is disposed at an outermost end of the first U-shaped groove. The pure iron is adsorbed on the permanent magnet and magnetized, so that the magnet is more attached to the polishing wheel, the magnetorheological fluid is prevented from being leaked out due to unstable factors, meanwhile, the pure iron can be better contacted with air flow, unnecessary gaps are reduced, and the abrasion of the magnetorheological fluid on the polishing wheel is further avoided.
Preferably, the magnet layer further comprises an adjusting shim disposed at the innermost end of the first U-shaped groove and/or between the permanent magnet and the pure iron. The distance between the permanent magnet and the magnetorheological polishing liquid is changed by increasing or decreasing the thickness of the annular gasket, so that the axial magnetic induction intensity is changed, and the phenomenon that the magnetorheological polishing liquid is hardened to cause abrasion on the magnetorheological polishing wheel due to too large magnetic field intensity or the magnetorheological polishing liquid cannot be blocked due to too small magnetic field intensity is avoided, so that the polishing liquid on the polishing wheel directly flows through the recoverer to cause incomplete recovery.
Preferably, the number of the spacers is 2 and the sum of the thicknesses of the two spacers is a fixed value. The distance between the permanent magnet and the polishing solution can be conveniently adjusted.
Preferably, the magnetic layer further comprises a shielding layer, the shielding layer wraps the periphery of the permanent magnet, the cross section of the shielding layer is of a U-shaped structure, and the opening part of the shielding layer faces the polishing wheel. The shielding layer is wrapped around the permanent magnet and used for weakening the radial magnetic induction intensity, and the abrasion of the magnetorheological polishing wheel caused by the hardening of the magnetorheological polishing liquid under the action of a magnetic field is reduced.
Preferably, the air pressure hole is provided in plurality and arranged at intervals. The structure can make the magnetorheological fluid be uniformly blown away.
Preferably, the air pressure hole is formed to surround 260 ° along an inner wall of the second U-shaped groove adjacent to the first U-shaped groove. The magnetorheological fluid blown off from the permanent magnet can be collected near the recovery cavity, so that the recovery of the magnetorheological fluid is facilitated, and the recovery stability and the recovery efficiency are improved.
Preferably, a sealing end cover is arranged at the upper end of the second U-shaped groove and fixedly arranged at the upper part of the second U-shaped groove.
Preferably, the lower end surface of the recovery cover is a curved surface attached to the polishing wheel. The curved surface structure reduces the gap between the magnetorheological polishing solution recoverer and the magnetorheological polishing wheel and reduces the leakage of the magnetorheological polishing solution.
The invention has the following technical effects: the air pressure hole is additionally arranged near the magnet layer, the magnetorheological fluid adsorbed on the magnet layer can be blown away by air flow sprayed by the air pressure hole, abrasion of the magnetorheological polishing fluid on the polishing wheel caused by hardening is avoided, and meanwhile the magnetorheological fluid is gathered near the recovery cavity by surrounding the air flow around the periphery, so that a better recovery effect is achieved.
Drawings
Figures 1-5 are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principle of operation of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.
FIG. 1 is a schematic diagram of a magnetorheological slurry recoverer incorporating a gas-magnetic seal according to the present invention;
FIG. 2 is a schematic view of another perspective view of a magneto-pneumatic sealed magnetorheological polishing fluid retriever of the present invention;
FIG. 3 is a schematic diagram of a U-shaped slot configuration of a magneto-rheological polishing fluid recoverer incorporating an air-magnetic seal in accordance with one embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 1;
FIG. 5 is a schematic view of the working state of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention is described in detail below with reference to figures 1-4.
The invention provides a magnetorheological polishing solution recoverer with air-magnetic sealing combination, as shown in figures 1 and 5, comprising: the magnetorheological polishing fluid recovery device comprises a recovery cover 1, a liquid guide pipe 2 and an air pressure device 3, wherein the liquid guide pipe 2 and the air pressure device 3 are arranged at the upper end of the recovery cover 1 and are fixedly connected with the recovery cover 1, and the recovery cover 1 is arranged opposite to a polishing wheel 200 for magnetorheological polishing so as to recover magnetorheological polishing fluid adsorbed by the polishing wheel;
fig. 2 is a schematic view showing another view of the present invention, and fig. 3 is a schematic view showing a structure of a U-shaped groove formed on a recovery cover. The lower end of the recovery cover 1 is provided with a first U-shaped groove 11 and a second U-shaped groove 12 which are adjacent to each other, the inner ring of the first U-shaped groove forms a recovery cavity 10 along the circumferential direction, the top wall of the inner cavity of the recovery cavity 10 is provided with a drainage hole 100 which is communicated with the liquid guide tube 2, the liquid guide tube 2 is externally connected with a recovery pump which generates negative pressure, the liquid guide tube is kept in a negative pressure state, and magnetorheological polishing liquid sucked into the liquid guide tube can automatically flow into an external storage device from the liquid guide tube. The recycling cover 1 is a cylinder, the first U-shaped groove 11 and the second U-shaped groove 12 are adjacently arranged and are semi-closed U-shaped deep grooves arranged along the outer circumference of the recycling cover 1, and the opening parts of the U-shaped grooves face the direction of the polishing wheel for bringing polishing liquid into the groove, so that the polishing liquid brought in by the polishing wheel is collected in the recycling cavity 10 and is guided into the liquid guide pipe 2 through the drainage hole 100. The liquid guide pipe 2 is externally connected with a recovery pump generating negative pressure, and the magnetic change polishing solution in the liquid guide pipe 2 is recovered to an external storage device through the recovery pump.
Fig. 4 is a sectional view taken along line a-a of fig. 1. As shown in fig. 4, a magnet layer 13 is embedded in the first U-shaped groove 11, and a gas pressure hole 101 is formed in the inner wall of the second U-shaped groove 12 adjacent to the first U-shaped groove 11, where the gas pressure hole 101 is exposed outside the magnet layer 13; the air flow passage of the air pressing device 3 is sequentially communicated with the second U-shaped groove 12 and the air pressure hole 101 to blow compressed air to the surface of the magnet layer 13.
The air pressure device 3 comprises a plurality of air inlet adapters which are arranged on the upper surface of the recovery cover 1 and connected with air pressure pipes, the air pressure pipes are connected with a pressure regulating valve, and finally, an air source is connected, so that the compressed air entering the recovery cavity 10 keeps a certain pressure.
The magnetic layer 13 forms a magnetic field effect to adsorb the magnetorheological polishing liquid brought into the recovery cover to prevent the magnetorheological polishing liquid from flowing out of the recovery cover, and high-pressure air flow blown out through the air pressure hole 101 blows away the magnetorheological polishing liquid attached to the surface of the magnetic layer 13 to be collected to the drainage hole 100 and flow into the liquid guide pipe 2, so that on one hand, the magnetorheological polishing liquid is prevented from flowing out of the recovery cover due to unstable factors, the recovery rate is improved, and on the other hand, the magnetorheological polishing liquid attached to the surface of the magnetic layer 13 is prevented from generating ribbon hardening due to the magnetic field effect to cause abrasion to the polishing wheel.
In one embodiment of the present invention, the magnet layer 13 includes a permanent magnet 130 and pure iron 131, and the pure iron 131 is disposed at the outermost end of the first U-shaped groove 11. The pure iron 131 is adsorbed on the permanent magnet and magnetized, so that the recovery cover 1 can be more attached to the polishing wheel, the magnetorheological fluid is prevented from being leaked out due to unstable factors, meanwhile, the magnetorheological fluid can be better contacted with the airflow blown out from the air pressure hole 101, unnecessary gaps are reduced, and the abrasion of the magnetorheological fluid on the polishing wheel is further avoided.
In an embodiment of the present invention, the magnet layer 13 further includes a spacer 132, and the spacer 132 is disposed at the innermost end of the first U-shaped groove 11 and/or between the permanent magnet 130 and the pure iron 131. The distance between the permanent magnet 130 and the magnetorheological polishing solution is changed by increasing or decreasing the thickness of the adjusting gasket 132, so that the axial magnetic induction intensity is changed, and the phenomenon that the magnetorheological polishing solution is hardened to cause abrasion to the magnetorheological polishing wheel due to too large magnetic field intensity or the magnetorheological polishing solution cannot be blocked due to too small magnetic field intensity is avoided, so that the polishing solution on the polishing wheel directly flows through a recoverer to cause incomplete recovery.
In one embodiment of the present invention, the spacer 132 is 2 pieces and the sum of the thicknesses of the two pieces is a fixed value. This facilitates adjustment of the distance between the permanent magnet 130 and the polishing liquid.
In an embodiment of the present invention, the magnetic layer 13 further includes a shielding layer 133, the shielding layer 133 is wrapped around the permanent magnet 130, and the shielding layer 133 has a U-shaped cross section with an opening facing the polishing wheel. The shielding layer 133 is wrapped around the permanent magnet 130 to weaken the radial magnetic induction intensity of the magnet layer 13, and reduce the abrasion of the magnetorheological polishing wheel caused by the hardening of the magnetorheological polishing liquid due to the action of a magnetic field.
In an embodiment of the present invention, the air pressure holes 101 are provided in a plurality and spaced apart from each other. The structure can make the magnetorheological fluid be uniformly blown away.
In one embodiment of the present invention, the gas pressure hole 101 is formed to surround 260 ° along the inner wall of the second U-shaped groove 12 adjacent to the first U-shaped groove 11. The magnetorheological fluid blown off from the magnet layer can be collected near the recovery cavity, so that the recovery of the magnetorheological fluid is facilitated, and the recovery stability and the recovery efficiency are improved.
In one embodiment of the present invention, the upper end of the second U-shaped groove 12 is provided with a sealing end cap 120. And the sealing end cover is welded on the upper part of the second U-shaped groove, so that the airflow channel is in a sealing state, and the compressed air keeps high-pressure airflow.
FIG. 5 is a schematic view of the working state of a magnetorheological polishing solution recoverer with combined air-magnetic seal. In an embodiment of the present invention, as shown in fig. 5, the lower end surface of the recycling cover 1 is a curved surface that conforms to the polishing wheel 200. The curved surface structure reduces the gap between the magnetorheological polishing solution recoverer and the magnetorheological polishing wheel and reduces the leakage of the magnetorheological polishing solution.
According to the invention, the air pressure device and the second U-shaped groove are arranged on the recovery cover, the air pressure hole is formed in the wall of the second U-shaped groove and is exposed on the surface of the magnetic body layer, so that high-pressure air flow enters the second U-shaped groove through the air flow channel of the air pressure device and is blown to the surface of the magnetic body layer from the air pressure hole, and the magnetorheological polishing liquid attached to the surface of the magnetic body layer is blown away and is collected to the drainage hole of the recovery cavity and flows into the drainage tube, so that the magnetorheological polishing liquid is prevented from flowing out of the recovery cover due to unstable factors, the recovery rate is improved, the phenomenon that the magnetorheological polishing liquid attached to the surface of the magnetic body layer generates ribbon hardening due to the action of a magnetic field, the polishing wheel is abraded, the factors influencing the processing precision are reduced, and the recovery efficiency and the stability of the magnetorheological polishing liquid are improved.
While the principles of the invention have been described in detail in connection with preferred embodiments, it is to be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.
Claims (9)
1. The magneto-rheological polishing solution recoverer with air-magnetic sealing combination is characterized by comprising: the magnetorheological polishing fluid recycling device comprises a recycling cover, a liquid guide pipe and an air pressure device, wherein the liquid guide pipe and the air pressure device are arranged at the upper end of the recycling cover and are fixedly connected with the recycling cover, and the recycling cover is arranged opposite to a polishing wheel so as to recycle magnetorheological polishing fluid; the lower end of the recovery cover is provided with a first U-shaped groove and a second U-shaped groove which are adjacent, the inner ring of the first U-shaped groove forms a recovery cavity along the circumferential direction, and the top wall of the inner cavity of the recovery cavity is provided with a drainage hole communicated with the liquid guide pipe; a magnet layer is embedded in the first U-shaped groove, an air pressure hole is formed in the inner wall of the second U-shaped groove adjacent to the first U-shaped groove, and the air pressure hole is exposed out of the magnet layer; and an air flow channel of the air pressure device is sequentially communicated with the second U-shaped groove and the air pressure hole so as to blow compressed air to the surface of the magnet layer.
2. The gas-magnetic seal bonded magnetorheological polishing solution recoverer according to claim 1, wherein the magnet layer comprises a permanent magnet and pure iron, and the pure iron is arranged at the outermost end of the first U-shaped groove.
3. The gas-magnetic seal combined magnetorheological polishing solution recoverer according to claim 2, wherein the magnet layer further comprises an adjusting shim disposed at the innermost end of the first U-shaped groove and/or between the permanent magnet and the pure iron.
4. The air-magnetic seal bonded magnetorheological polishing solution recoverer according to claim 3, wherein the adjusting shim is 2 pieces and the sum of the thicknesses of the two adjusting shims is a fixed value.
5. The air-magnetic seal combined magnetorheological polishing solution recoverer according to claim 2, wherein the magnet layer further comprises a shielding layer, the shielding layer is wrapped on the periphery of the permanent magnet, the cross section of the shielding layer is of a U-shaped structure, and the opening part of the shielding layer faces the polishing wheel.
6. The air-magnetic seal combined magnetorheological polishing solution recoverer according to claim 1, wherein the air pressure hole is provided in plurality and arranged at intervals.
7. The air-magnetic seal bonded magnetorheological polishing fluid recoverer of claim 6, wherein the air pressure port is circumferentially 260 ° along an inner wall of the second U-shaped channel adjacent to the first U-shaped channel.
8. The air-magnetic seal combined magnetorheological polishing solution recoverer according to claim 1, wherein a sealing end cover is arranged at the upper end of the second U-shaped groove and fixedly arranged at the upper part of the second U-shaped groove.
9. The air-magnetic seal combined magnetorheological polishing solution recoverer according to claim 1, wherein the lower end surface of the recovery cover is a curved surface attached to the polishing wheel.
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| CN202210443383.4A CN114734305A (en) | 2022-04-25 | 2022-04-25 | Magnetorheological polishing solution recoverer with air-magnetic sealing combination |
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| CN202210443383.4A CN114734305A (en) | 2022-04-25 | 2022-04-25 | Magnetorheological polishing solution recoverer with air-magnetic sealing combination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157019A (en) * | 2022-08-18 | 2022-10-11 | 中国人民解放军国防科技大学 | Wheel ring type magnetorheological polishing head and magnetorheological polishing machine tool |
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Application publication date: 20220712 |