CN1169171C - Multiple polymerization and radiation orientation process of forming and preparing magnetic ring - Google Patents
Multiple polymerization and radiation orientation process of forming and preparing magnetic ring Download PDFInfo
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- CN1169171C CN1169171C CNB011115092A CN01111509A CN1169171C CN 1169171 C CN1169171 C CN 1169171C CN B011115092 A CNB011115092 A CN B011115092A CN 01111509 A CN01111509 A CN 01111509A CN 1169171 C CN1169171 C CN 1169171C
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Abstract
The present invention belongs to the preparation field of anisotropic magnetic materials, more specifically to a multipole polymerization and radiation orientation process of forming and preparing magnetic rings. A multipole electrically excited and inwards polymerized magnetic field is used to constitute a closed loop structure in the shape like the Chinese character 'tian ' for effectively magnetizing and orientating the added magnetic powder of a working area in the mode of radiation. A press is used for forming, and a female mold is floated downwards for demoulding. The press has the characteristics of homogeneous and reasonable radiation orientating field, high magnetic field strength, large height-to-diameter ratio, high forming rate, simple and convenient operation, etc. The present invention is suitable for the industrial production of forming various anisotropic magnetic materials.
Description
One, technical field:
The invention belongs to the anisotropic magnetic material preparation field, relate to a kind of multiple polymerization and radiation orientation process of forming and preparing of magnet ring specifically.
Two, background technology:
Development along with science and technology and new material, the demand of multi-pole magnet-ring must heighten in the largest application areas motor of magnetic material, at present, the domestic production magnet ring still adopts traditional axle core to the radially oriented moulding of utmost point impacting jet, it is to utilize the magnet exciting coil that is enclosed within same axle core two ends, the relative exciting field of through a DC generation homopolarity of while, the jet radiation collision is repelled each other at axle core middle part because of the same sex after of this magnetic field externally produces radiation field, utilize this magnetic field that the anisotropic magnetic material powder is orientated, equally also be the effect compacted under and the demoulding at press, its advantage is that radially oriented in the service area is more even, be applicable to that the production ratio of height to diameter is little, the anisotropic radiation magnet ring that performance is low, for traditional axle core the utmost point is collided the radially oriented magnetic field of extruding jet, we are easy to calculate (magnetic resistance under the perfect condition by the magnetic field principle of continuity, leakage field, magnetic losses etc. are all disregarded) ratio of height to diameter of sintering blank, when axle core magnetic field intensity reaches material saturation magnetic field intensity is arranged, even if adopted 50% cobalt steels (the highest material H of saturation magnetic field intensity at present
o≈ 2.8T), the height of its sintering blank at most also can only be half of ring internal diameter, though also can make a core magnetic field reach the over-saturation state, but because of the magnetic field after the over-saturation is disorderly, concerning orientation, do not have benefit, have again, because of the energy loss after the magnetic field collision also bigger, leakage field and magnetic resistance are inevitably in addition, thereby ratio of height to diameter half also will have a greatly reduced quality (pine dress height is by 3 times of the blank height here, and working area field intensity is by 1T).So magnet ring can not be done very highly, can't meet the need of market.
Three, summary of the invention:
The objective of the invention is to adopt closed-loop path, a kind of multipole electric excitation inside polymerization magnetic field " matrix pattern " structure, changed traditional core utmost point magnetic has been hit the jet orientation texture, utilize magnetic resistance, magnetic loss, leakage field unfavorable factor to turn waste into wealth, it is big to produce ratio of height to diameter, the high different in nature magnet ring of magnetic property is to overcome above-mentioned deficiency.
The objective of the invention is to realize by following technical scheme:
A kind of multiple polymerization and radiation orientation process of forming and preparing of magnet ring, comprise magnet exciting coil, main yoke, former, the service area, poly-magnetic axis core, following plug, last plug, secondary yoke, distributing device, scraper plate, seaming chuck, the patrix pressure head, spring, the counterdie pressure head, adjuster, pin, push-down head, oil cylinder floats, down pressing oil cylinder, its characteristics are: magnet exciting coil is by main yoke and the inside polymerization of former, passing alignment magnetic field behind the service area divides up and down two routes plug and secondary yoke is led back up and down in poly-magnetic axis in-core collision back, form complete " matrix pattern " closed-loop path, magnet exciting coil is by permanent magnetic coil 1
#With pulsed coil 2
#Form pulsed coil 2
#Be contained in the permanent magnetic coil 1 of direct current
#The inside, the preparation method of concrete structure and oriented moulding is as follows:
A, concrete structure: load the mold pressing head on the push-down head and also be adhesively fixed mutually, the upper end of counterdie pressure head is provided with the service area, plug is loaded in the lower end in the hole of push-down head, dress poly-magnetic axis core in upper end also is adhesively fixed mutually, the top of poly-magnetic axis core is provided with convex cone, the seaming chuck middle end of upper section is provided with hole dress pin, the lower end of seaming chuck is loaded onto the mold pressing head and is adhesively fixed mutually and surely closes mutually with service area place, the bottom of last plug is provided with concave cone, last plug is contained in the seaming chuck by dowel fixes on seaming chuck, and the concave cone that will go up plug is corresponding mutually with the convex cone of poly-core axis, the outer end dress adjuster of seaming chuck, the upper end shock mount of last plug, the outer end of patrix pressure head and counterdie pressure head is adorned former and is surely closed mutually with the place, service area, the upper end dress distributing device of former, be provided with scraper plate in the distributing device, main yoke is adorned in the outer end of former, magnet exciting coil is all adorned in the outer ring of main yoke, secondary yoke is equipped with in the outer end of seaming chuck and push-down head, the inboard middle-end of secondary yoke is provided with the hole, in the hole of the inboard of the slotting secondary yoke of the little head end of main yoke, the upper end of secondary yoke and the secondary yoke on the seaming chuck interfix, and the secondary yoke of lower end and push-down head interfixes
B, the preparation method of oriented moulding: when the patrix pressure head begins to suppress, last plug shrinks because of spring above the support compression of poly-magnetic axis core, guarantee normally pressing down of patrix pressure head, when magnetic powder base under the support of counterdie pressure head, the former demoulding of floating downward, when arrival former in magnetic powder base upper end is suitable for reading, the adjuster that adjusted is good just withstands on the pin, pin rises synchronously with seaming chuck, the blank that guarantees forming is not inserted in the plug, insert the anisotropic magnetic material powder in the service area after, magnet exciting coil excitation orientation is by press compression moulding, the former demoulding of floating downward, finish the radially oriented moulding to anisotropic magnetic material, before former was floated downward the demoulding, seaming chuck lifted 0.1-0.5mm slightly, elastic energy with internal memory behind the release magnetic pressurized, in the whole process of the magnetic powder base demoulding, the patrix pressure head is being helped magnetic powder base all the time, guarantees the serviceability rate of the magnetic powder base demoulding of forming.
This device integral installation is after on the existing press, and the lower end of secondary yoke is mutually permanently connected with the oil cylinder of floating downward, and push-down head and down pressing oil cylinder are mutually permanently connected, when oriented moulding, and direct current perseverance magnetic coil 1
#Begin compacting after the excitation orientation, in whole pressing process, the permanent magnetic field of direct current is remaining pulsed coil 2
#Starting when beginning to suppress, pulsed coil 2 in whole pressing process
#Pull the trigger out several pulsed magnetic fields, on the permanent magnetic field of the direct current that is added to,, and vibration is arranged and set upright the effect of arranging bad magnetic with the enhancing alignment magnetic field.In the height and width range of main yoke, cavity dimension can be changed arbitrarily as required, all is added with an adjustable device on the magnet exciting coil, by these adjustable devices, can adjust effectively and mates magnetic field, helps the even distribution in magnetic field.
Adopt a kind of magnet ring multiple polymerization and radiation orientation process of forming and preparing of the present invention, can be effectively the magnetic that inserts in the service area be carried out the radiation orientation that magnetizes, this device integral installation is on press, effect compacted under at press, the former demoulding of floating downward, can finish high-performance, the orientation and the moulding of the anisotropy magnet radiation magnetic loop that ratio of height to diameter is big, it has the magnetic field intensity height, magnetic circuit is reasonable, radially oriented evenly, ratio of briquetting is high, is applicable to the suitability for industrialized production of the radially oriented moulding of all kinds of anisotropic magnetic material.
Four, description of drawings:
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is a pulsed magnetic field structural representation of the present invention.
Five, embodiment:
Embodiment:
As Fig. 1, the multiple polymerization and radiation orientation process of forming and preparing of a kind of magnet ring shown in Figure 2, comprise magnet exciting coil 1, main yoke 2, former 3, service area 4, poly-magnetic axis core 5, following plug 6, last plug 7, secondary yoke 8, distributing device 9, scraper plate 10, seaming chuck 11, patrix pressure head 12, spring 13, counterdie pressure head 14, adjuster 15, pin 16, push-down head 17, oil cylinder 18 floats, down pressing oil cylinder 19, its characteristics are: magnet exciting coil 1 is by main yoke 2 and former 3 inside polymerizations, passing alignment magnetic field behind the service area 4 collides the back and divides up and down two routes plug 7 up and down in poly- magnetic axis core 5,6 and secondary yoke 8 lead back, form complete " matrix pattern " closed-loop path, magnet exciting coil 1 is by permanent magnetic coil 1
#With pulsed coil 2
#Form pulsed coil 2
#Be contained in the permanent magnetic coil 1 of direct current
#The inside, concrete structure and orientation process of forming and preparing are as follows:
A, concrete structure: load mold pressing 14 on the push-down head 17 and be adhesively fixed mutually, the upper end of counterdie pressure head 14 is provided with service area 4, plug 6 is loaded in lower end in the hole of push-down head 17, dress poly-magnetic axis core 5 in upper end also is adhesively fixed mutually, the top of poly-magnetic axis core 5 is provided with convex cone, seaming chuck 11 middle end of upper section are provided with hole dress pin 16, the lower end of seaming chuck 11 is loaded onto mold pressing 12 and is adhesively fixed mutually and surely closes mutually with 4 places, service area, the bottom of last plug 7 is provided with concave cone, last plug 7 is contained in the seaming chuck 11 and is fixed on the seaming chuck 11 by pin 16, and the concave cone that will go up plug 7 is corresponding mutually with the convex cone of poly-core axis 5, the outer end dress adjuster 15 of seaming chuck 11, the upper end shock mount 13 of last plug 7, patrix pressure head 12 surely closes mutually with the outer end dress former 3 of counterdie pressure head 14 and with 4 places, service area, the upper end dress distributing device 9 of former 3, be provided with scraper plate 10 in the distributing device 9, main yoke 2 is adorned in the outer end of former 3, magnet exciting coil 1 is all adorned in the outer ring of main yoke 2, seaming chuck 11 is equipped with secondary yoke with the outer end of push-down head 17, the inboard middle-end of secondary yoke 8 is provided with the hole, in the hole of the inboard of the slotting secondary yoke 8 of the little head end of main yoke 2, the upper end of secondary yoke 8 and the secondary yoke on the seaming chuck 11 interfix, the secondary yoke of lower end and push-down head 17 interfixes
B, when patrix pressure head 12 begins to suppress, last plug 7 shrinks because of spring 13 above the support compression of poly-magnetic axis core 5, guarantee normally pressing down of patrix pressure head 12, when magnetic powder base under the support of counterdie pressure head 14, former 3 demoulding of floating downward, magnetic powder base upper end arrives former 3 when suitable for reading, the adjuster 15 that adjusted is good just withstands on the pin 16, pin 16 rises synchronously with seaming chuck 11, the blank that guarantees forming is not inserted in the plug 7, in service area 4, insert the anisotropic magnetic material powder after, magnet exciting coil 1 excitation is orientated, by press compression moulding, before former 3 was floated downward the demoulding, seaming chuck 11 lifted 0.1-0.5mm slightly, with the elastic energy of internal memory behind the release magnetic pressurized, in the whole process of the magnetic powder base demoulding, patrix pressure head 12 is being helped magnetic powder base all the time, guarantees the serviceability rate of the magnetic powder base demoulding of forming, former 3 demoulding of floating downward, finish radially oriented moulding to anisotropic magnetic material
This device integral installation is after on the existing press, the lower end of secondary yoke 8 is mutually permanently connected with the oil cylinder 18 of floating downward, push-down head 17 is mutually permanently connected with down pressing oil cylinder 19, magnet exciting coil 1 is by main yoke 2 and former 3 inside polymerizations, passing same sex magnetic field behind the service area 4 collides the back and divides up and down two routes plug 7,6 and secondary yoke 8 are led back up and down in poly-magnetic axis core 5, form complete " matrix pattern " closed-loop path (as shown in Figure 2), when oriented moulding, the permanent magnetic coil 1 of direct current
#Begin compacting after the excitation orientation, in whole pressing process, the permanent magnetic field of direct current is remaining pulsed coil 2
#Starting when beginning to suppress, pulsed coil 2 in whole pressing process
#Pull the trigger out several pulsed magnetic fields, on the permanent magnetic field of the direct current that is added to,, and vibration is arranged and set upright the effect of arranging bad magnetic with the enhancing alignment magnetic field.In the height and width range of main yoke 2, former 3 sizes can be changed arbitrarily as required, all are added with an adjustable device on the magnet exciting coil 1, by these adjustable devices, can adjust effectively and mate magnetic field, help the even distribution in magnetic field.
During use, counterdie pressure head 14 just penetrates service area 4 ring bottom 2-3mm, seal the ring end, and be the lowest order of no magnetic counterdie pressure head 14, seaming chuck 11 all lifts in highest order, magnetic system is solidified as a whole with former 3, at this moment former 3 is in highest order, above former 3, just reserved like this and added material space, promptly carried out reinforced preparation, magnetic is poured in the distributing device 9 of funnel type, distributing device can rotate and vibration in manual or electronic generation, making magnetic fall into service area 4 carries out effectively reinforced, in distributing device 9, be provided with several scraper plates 10, it can blow down low area to the magnetic of pouring service area 4 the raised areas into, so just can guarantee that the powder that joins service area 4 evenly distributes in the service area, last plug 7 can slide up and down in the hole of seaming chuck 11, the last plug 7 of seaming chuck 11 the insides is under the effect of deadweight and spring 13, the concave cone end of following last plug 7 and no magnetic patrix pressure head 12 ends are simultaneously, after magnetic adds well, seaming chuck 11 moves down in the effect integral body of last compressing cylinder, after the convex cone crimping of the concave cone of last plug 7 and poly-magnetic axis core 5, " matrix pattern " magnetic circuit forms closure, and the end of at this moment not having magnetic patrix pressure head 12 just in time covers 3 mouthfuls of formers, after building, the permanent magnetic field of direct current begins orientation and magnetizes, after several seconds, no magnetic patrix pressure head 12 begins to press down, at this moment pulsed coil (2
#) also start working, when compacting work, because of last plug 7 and poly-magnetic axis core 5 diebacks, do not have and move down the space, can only compress top spring 13, and pin 16 is moved in the chute that pre-sets, in the whole process of compacting, permanent magnetic field is being given all the time, arranges good magnetic to help, simultaneously, pulsed magnetic field several pulsed magnetic fields that superpose on permanent magnetic field are arranged good magnetic and are forced crooked magnetic to come into line with vibration, after the moulding compacting finishes, permanent magnetic field and pulsed magnetic field quit work after the several seconds, by permanent magnetic coil (1
#) provide a ratio the low reverse demagnetizing field that magnetizes again, to cut off the power supply after the demagnetization several seconds, the work of magnetizing of whole orientation is just finished.Next be the demoulding, before the demoulding, no magnetic patrix pressure head 12 lifts a bit slightly, to discharge the internal memory elastic energy of blank.Upper and lower pressure head 11,17 keeps motionless relatively during the demoulding, former 3 floats downwards down with the effect that magnetic ties up to the oil cylinder 18 that floats, when no magnetic patrix pressure head 12 is withdrawn into former 3 places suitable for reading, drift bolt 16 just in time withstands with adjuster 15, when continuing the demoulding, seaming chuck 11 drives to go up on the plug 7 by drift bolt 16 and moves, and also can not be inserted in the plug 7 after the depanning of magnetic powder base ring.After magnetic powder base was all deviate from former, magnetic system floated downward and stops, and at this moment seaming chuck is got back to initial position, took out magnetic powder base, and magnetic ties up under the effect of the oil cylinder 18 that floats and floats to initial position, has so just finished the overall process of an oriented moulding.
Claims (5)
1, a kind of multiple polymerization and radiation orientation process of forming and preparing of magnet ring, comprise magnet exciting coil (1), main yoke (2), former (3), service area (4), poly-magnetic axis core (5), following plug (6), last plug (7), secondary yoke (8), distributing device (9), scraper plate (10), seaming chuck (11), patrix pressure head (12), spring (13), counterdie pressure head (14), adjuster (15), pin (16), push-down head (17), oil cylinder (18) floats, down pressing oil cylinder (19), it is characterized in that: magnet exciting coil (1) is by main yoke (2) and inwardly polymerization of former (3), passing alignment magnetic field behind the service area (4) collides the back and divides up and down two routes plug (7) up and down in poly-magnetic axis core (5), (6) and secondary yoke (8) lead back, form complete " matrix pattern " closed-loop path, magnet exciting coil (1) is by permanent magnetic coil 1
#With pulsed coil 2
#Form pulsed coil 2
#Be contained in the permanent magnetic coil 1 of direct current
#The inside, the preparation method of concrete structure and oriented moulding is as follows:
A, concrete structure: load mold pressing head (14) on the push-down head (17) and also be adhesively fixed mutually, the upper end of counterdie pressure head (14) is provided with service area (4), plug (6) is loaded in lower end in the hole of push-down head (17), dress poly-magnetic axis core (5) in upper end also is adhesively fixed mutually, the top of poly-magnetic axis core (5) is provided with convex cone, seaming chuck (11) middle end of upper section is provided with hole dress pin (16), the lower end of seaming chuck (11) is loaded onto mold pressing head (12) and is adhesively fixed mutually and locates surely to close mutually with service area (4), the bottom of last plug (7) is provided with concave cone, last plug (7) is contained in the seaming chuck (11) and is fixed on the seaming chuck (11) by pin (16), and the concave cone that will go up plug (7) is corresponding mutually with the convex cone of poly-core axis (5), the outer end dress adjuster (15) of seaming chuck (11), the upper end shock mount (13) of last plug (7), patrix pressure head (12) is located surely to close mutually with the outer end dress former (3) of counterdie pressure head (14) and with service area (4), the upper end dress distributing device (9) of former (3), be provided with scraper plate (10) in the distributing device (9), main yoke (2) is adorned in the outer end of former (3), magnet exciting coil (1) is all adorned in the outer ring of main yoke (2), seaming chuck (11) is equipped with secondary yoke with the outer end of push-down head (17), the inboard middle-end of secondary yoke (8) is provided with the hole, in the hole of the inboard of the slotting secondary yoke (8) of the little head end of main yoke (2), the upper end of secondary yoke (8) and the secondary yoke on the seaming chuck (11) interfix, the secondary yoke of lower end and push-down head (17) interfixes
B, the preparation method of oriented moulding is as follows: at patrix pressure head (12) when beginning to suppress, last plug (7) shrinks because of spring (13) above the support compression of poly-magnetic axis core (5), guarantee normally pressing down of patrix pressure head (12), when magnetic powder base under the support of counterdie pressure head (14), former (3) demoulding of floating downward, when magnetic powder base upper end arrival former (3) is suitable for reading, the adjuster that adjusted is good (15) just withstands on the pin (16), pin (16) rises synchronously with seaming chuck (11), the blank that guarantees forming is not inserted in the plug (7), after in service area (4), inserting the anisotropic magnetic material powder, magnet exciting coil (1) excitation orientation, by press compression moulding, before former (3) was floated downward the demoulding, seaming chuck (11) lifted 0.1-0.5mm slightly, elastic energy with internal memory behind the release magnetic pressurized, in the whole process of the magnetic powder base demoulding, patrix pressure head (12) is being helped magnetic powder base all the time, guarantees the serviceability rate of the magnetic powder base demoulding of forming.The radially oriented moulding to anisotropic magnetic material is finished in former (3) demoulding of floating downward.
2, the multiple polymerization and radiation orientation process of forming and preparing of a kind of magnet ring according to claim 1, it is characterized in that: this device integral installation is after on the existing adaptation press, the lower end of secondary yoke (8) is mutually permanently connected with the oil cylinder (18) of floating downward, and push-down head (17) is mutually permanently connected with down pressing oil cylinder (19).
3, the multiple polymerization and radiation orientation process of forming and preparing of a kind of magnet ring according to claim 1 is characterized in that: when oriented moulding, and the permanent magnetic coil 1 of direct current
#Begin compacting after the excitation orientation, in whole pressing process, the permanent magnetic field of direct current is remaining pulsed coil 2
#Starting when beginning to suppress, pulsed coil 2 in whole pressing process
#Pull the trigger out several pulsed magnetic fields, on the permanent magnetic field of the direct current that is added to.
4, the multiple polymerization and radiation orientation process of forming and preparing of a kind of magnet ring according to claim 1 is characterized in that: in the height and width range of main yoke (2), former (3) size can be changed arbitrarily as required.
5, the multiple polymerization and radiation orientation process of forming and preparing of a kind of magnet ring according to claim 1, it is characterized in that: all be added with an adjustable device on the magnet exciting coil (1), by these adjustable devices, can adjust effectively and mate magnetic field, help the even distribution in magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011115092A CN1169171C (en) | 2001-03-14 | 2001-03-14 | Multiple polymerization and radiation orientation process of forming and preparing magnetic ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011115092A CN1169171C (en) | 2001-03-14 | 2001-03-14 | Multiple polymerization and radiation orientation process of forming and preparing magnetic ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1374665A CN1374665A (en) | 2002-10-16 |
| CN1169171C true CN1169171C (en) | 2004-09-29 |
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ID=4659079
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011115092A Expired - Fee Related CN1169171C (en) | 2001-03-14 | 2001-03-14 | Multiple polymerization and radiation orientation process of forming and preparing magnetic ring |
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| CN (1) | CN1169171C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7931856B2 (en) * | 2007-09-04 | 2011-04-26 | Burgess-Norton Mfg. Co., Inc. | Method of manufacturing crankshaft bushing |
| CN102416471A (en) * | 2012-01-09 | 2012-04-18 | 湖南航天工业总公司 | Pressing mold for manufacturing amplitude/multi-polar oriented whole permanent magnetic ring |
| CN102982994B (en) * | 2012-09-26 | 2014-11-05 | 横店集团东磁股份有限公司 | Orientation compacting system and manufacture method of radial orientation magnetic ring |
| CN103128286B (en) * | 2013-03-13 | 2015-03-04 | 黄可可 | Anisotropism sintering rare earth permanent magnetic material radial orientation device and orientation method thereof |
| CN103286980B (en) * | 2013-06-18 | 2016-05-11 | 南通国谊锻压机床有限公司 | A kind of molding device of radially oriented forming hydraulic press |
| CN105529131B (en) * | 2016-03-08 | 2017-10-13 | 佛山市川东磁电股份有限公司 | A kind of radiation of magnetic Nd-Fe-B ring is magnetized technique and device |
| CN107978443A (en) * | 2017-11-22 | 2018-05-01 | 包头稀土研究院 | Elevating type radiation oriented moulding method and mechanism |
| CN112331442B (en) * | 2020-09-28 | 2023-02-28 | 中国科学院宁波材料技术与工程研究所 | Magnetizing device, magnetizing apparatus, magnetizing method, and permanent magnet |
| CN113948303B (en) * | 2021-10-20 | 2023-05-05 | 合肥工业大学 | Sintered NdFeB radiation ring and preparation method thereof |
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2001
- 2001-03-14 CN CNB011115092A patent/CN1169171C/en not_active Expired - Fee Related
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| CN1374665A (en) | 2002-10-16 |
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Granted publication date: 20040929 Termination date: 20130314 |