CN103111618B - Device of neodymium iron boron automatic suppressing orientation forming and method - Google Patents
Device of neodymium iron boron automatic suppressing orientation forming and method Download PDFInfo
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- CN103111618B CN103111618B CN201210426748.9A CN201210426748A CN103111618B CN 103111618 B CN103111618 B CN 103111618B CN 201210426748 A CN201210426748 A CN 201210426748A CN 103111618 B CN103111618 B CN 103111618B
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Abstract
The invention discloses a device of neodymium iron boron automatic suppressing orientation forming. The device of the neodymium iron boron automatic suppressing orientation forming comprises a fixed mould, a movable mould, an electromagnet and a magnet exciting coil. The fixing mould comprises a metal mould sleeve and a rubber mould arranged in the metal mould sleeve. The movable mould comprises a steel upper pressing head and a rubber upper pressing head fixed below the steel upper pressing head. A method is further provided at the same time. The method includes the following steps that the rubber upper pressing head drops when the upper end surface of the rubber mould is filled by magnetic powder. An orientation magnetic field drops to zero when density of a magnet blank meets the requirement. A demagnetization magnetic field is provided and the demagnetization magnetic field drops to zero. Production cost is reduced. Demoulding is simple. Pressure can be improved when the device of neodymium iron boron automatic suppressing orientation forming is pressed. The problem of demoulding is not needed to be worried about. The prior isostatic pressing process can be achieved at the same time when the device of neodymium iron boron automatic suppressing orientation forming is pressed. Two steps of the existing technology on the same platform device are achieved. Production efficiency is greatly improved.
Description
Technical field
The present invention relates to the device and method that the automatic pressing orientating of a kind of neodymium iron boron is shaping.
Background technology
Domestic existing neodymium iron boron pressing orientating is shaping is all that metal pattern is shaping, then blank is inserted in rubber finger sleeve and sends to isostatic pressed again, because the raising of the frictional force between metal pattern and magnet along with magnet density will increase considerably, it is more difficult to cause when the demoulding, so will through releasing agent, otherwise mould be easy to damage.All want release agent spraying before every task, then also often will clear up die cavity, otherwise product easily ftractures.And in process of production, often meeting people's weighing, a people feeds in raw material; blank is inserted in emgloves by a people, sends to isostatic pressed subsequently, then sends to sintering; major part factory is all that this sample loading mode carries out the compacting of neodymium iron boron magnetic body oriented moulding, and this process will take a lot of manpowers and time.
The automatic pressing orientating moulding press of real neodymium iron boron should be input magnetic; output directly can deliver to the blank of sintering furnace; whole process does not need manual operation; and whole pressing process should through row under high pure nitrogen protection, and also not have a press to reach according to above requirement is domestic at present.So the technology of the present invention is exactly reach above requirement, meet disposal molding.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide the device that the automatic pressing orientating of a kind of neodymium iron boron is shaping, use this device shaping efficiency high, achieve one-shot forming.
For solving the problems of the technologies described above, the present invention is solved by following technical proposals: the device that the automatic pressing orientating of a kind of neodymium iron boron is shaping, the dynamic model comprising cover half, match with described cover half, for providing the electromagnet of alignment magnetic field and being wrapped in the magnet exciting coil on described electromagnet, it is characterized in that: described cover half comprises metal die sleeve and is arranged at the rubber die in described metal die sleeve, described dynamic model comprises steel seaming chuck and is fixed on the rubber seaming chuck below described steel seaming chuck.The present invention uses rubber membrane to avoid the problem producing frictional force between metal film and Nd-Fe-Bo permanent magnet material, the demoulding is simple, service life extends, reduce production cost, the more important thing is that the demoulding is simple, pressure when can improve compacting and without the need to worrying release problems, therefore, original isostatic pressed process can be realized when suppressing simultaneously, two of prior art steps being realized on same table apparatus, substantially increases production efficiency.
As preferably, above-mentioned electromagnet comprises electromagnet and lower electromagnet, and described upper electromagnet is fixed on the upper side of described steel seaming chuck, is provided with steel push-down head below described rubber membrane, described lower electromagnet is fixed on the downside of described steel push-down head, and described metal die sleeve is nonmagnetic steel cover.This programme is that parallel pressure mode is suppressed, and it is consistent with pressing direction to get magnetic direction, is applicable to following product: axial orientation annulus, cylinder fan cross section (VCM) post, and two non-oriented direction sizes are all comparatively large, the square that differently-oriented directivity size is less.
One of preferably: above-mentioned steel seaming chuck is magnetically soft steel seaming chuck.Its advantage is that soft magnetism can improve alignment magnetic field.
As another preferred version: above-mentioned steel seaming chuck is nonmagnetic steel seaming chuck.Its advantage is to be uniformly distributed without the favourable alignment magnetic field of magnetic.
As preferably, above-mentioned electromagnet comprises left electromagnet and right electromagnet, and described left electromagnet is fixed on the left surface of described metal die sleeve, and described right electromagnet is fixed on the right flank of described metal die sleeve, described steel seaming chuck is nonmagnetic steel seaming chuck, and described steel push-down head is nonmagnetic steel push-down head.This programme is that vertical pressure mode is suppressed, and gets magnetic direction and pressing direction is perpendicular, is applicable to following product: differently-oriented directivity size is comparatively large, and a non-oriented direction size is comparatively large, the square that another non-oriented direction size is less and warp-wise orientation annulus.
One of preferably: above-mentioned metal die sleeve is soft magnetism template perpendicular to the template of getting magnetic direction, the template of getting magnetic direction is parallel to for without magnetic template.Its advantage is to be uniformly distributed without the favourable alignment magnetic field of magnetic.
As another preferred version: above-mentioned metal die sleeve is without magnetic template perpendicular to the template of getting magnetic direction, being parallel to the template of getting magnetic direction is without magnetic template.Its advantage is that soft magnetism can improve alignment magnetic field.
The present invention additionally provides a kind of method using said apparatus to suppress neodymium iron boron simultaneously, it is characterized in that comprising the following steps: when magnetic is full of described rubber die upper surface, described electromagnet starts to provide alignment magnetic field, described rubber seaming chuck declines, magnetic is compressed at above-below direction, and density is increased to 3.9-4.1 gram/cm
3, now described steel seaming chuck lower surface arrives described rubber die upper surface, and magnet blank is subject to up and down, left and right, the pressure in three directions, front and back, when magnet green density reaches 4.6 grams/cm
3-4.7 grams/cm
3time, alignment magnetic field drops to zero, then provides demagnetized field, after demagnetized field drops to zero, described rubber seaming chuck rises, with permanent magnetic suction head by the sucking-off from rubber die die cavity of described magnet blank, move to above discharging box, described permanent magnetic suction head eliminates suction, and discharging box fallen into by described magnet blank.This method only needs a table apparatus to complete needs the function of oriented moulding machine and isostatic pressing machine two equipment realizations in the prior art.
Compared with prior art, the invention has the beneficial effects as follows: the present invention uses rubber membrane to avoid the problem producing frictional force between metal film and Nd-Fe-Bo permanent magnet material, the demoulding is simple, and service life extends, and reduces production cost, the more important thing is that the demoulding is simple, pressure when can improve compacting and without the need to worrying release problems, therefore, original isostatic pressed process can be realized the while of when suppressing, two of prior art steps are realized on same table apparatus, substantially increases production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the fixed half and moving half structural representation of the embodiment of the present invention 2.
Fig. 3 is the cover half of the embodiment of the present invention 2 and the structural representation of electromagnet.
Fig. 4 is the relation of alignment magnetic field and demagnetized field and rubber seaming chuck position in the embodiment of the present invention 3.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail: embodiment 1.
The device that the automatic pressing orientating of a kind of neodymium iron boron is shaping, the dynamic model 2 comprising cover half 1, match with described cover half 1, for providing the electromagnet of alignment magnetic field and being wrapped in the magnet exciting coil 4 on described electromagnet, described cover half 1 comprises metal die sleeve 11 and is arranged at the rubber die 12 in described metal die sleeve 11, and described dynamic model 2 comprises steel seaming chuck 21 and is fixed on the rubber seaming chuck 22 below described steel seaming chuck 21.The present invention uses rubber membrane to avoid the problem producing frictional force between metal film and Nd-Fe-Bo permanent magnet material, the demoulding is simple, service life extends, reduce production cost, the more important thing is that the demoulding is simple, pressure when can improve compacting and without the need to worrying release problems, therefore, original isostatic pressed process can be realized when suppressing simultaneously, two of prior art steps being realized on same table apparatus, substantially increases production efficiency.
Wherein, above-mentioned electromagnet comprises electromagnet 31 and lower electromagnet 32, described upper electromagnet 31 is fixed on the upper side of described steel seaming chuck, steel push-down head 13 is provided with below described rubber membrane 12, described lower electromagnet 32 is fixed on the downside of described steel push-down head 13, and described metal die sleeve 11 is nonmagnetic steel cover.This programme is that parallel pressure mode is suppressed, and it is consistent with pressing direction to get magnetic direction, is applicable to following product: axial orientation annulus, cylinder fan cross section (VCM) post, and two non-oriented direction sizes are all comparatively large, the square that differently-oriented directivity size is less.
Above-mentioned steel seaming chuck 21 is magnetically soft steel seaming chuck.Its advantage is that soft magnetism can improve alignment magnetic field.
Certainly, above-mentioned steel seaming chuck 21 also can be nonmagnetic steel seaming chuck.Its advantage is to be uniformly distributed without the favourable alignment magnetic field of magnetic.
Embodiment 2.
The device that the automatic pressing orientating of a kind of neodymium iron boron is shaping, the dynamic model 2 comprising cover half 1, match with described cover half 2, for providing the electromagnet of alignment magnetic field and being wrapped in the magnet exciting coil 4 on described electromagnet, described cover half 1 comprises metal die sleeve 11 and is arranged at the rubber die 12 in described metal die sleeve 11, and described dynamic model 2 comprises steel seaming chuck 21 and is fixed on the rubber seaming chuck 22 below described steel seaming chuck 21.
Wherein, above-mentioned electromagnet comprises left electromagnet 33 and right electromagnet 34, described left electromagnet 33 is fixed on the left surface of described metal die sleeve 11, described right electromagnet 34 is fixed on the right flank of described metal die sleeve 11, described steel seaming chuck 21 is nonmagnetic steel seaming chuck, the downside of described metal die sleeve 11 can be used as steel push-down head 13, and described steel push-down head 13 is nonmagnetic steel push-down head.This programme is that vertical pressure mode is suppressed, and gets magnetic direction and pressing direction is perpendicular, is applicable to following product: differently-oriented directivity size is comparatively large, and a non-oriented direction size is comparatively large, the square that another non-oriented direction size is less and warp-wise orientation annulus.
Above-mentioned metal die sleeve 11 is soft magnetism template perpendicular to the template of getting magnetic direction, is parallel to the template of getting magnetic direction for without magnetic template.Its advantage is to be uniformly distributed without the favourable alignment magnetic field of magnetic.
Certainly, above-mentioned metal die sleeve 11 also can be without magnetic template perpendicular to the template of getting magnetic direction, and being parallel to the template of getting magnetic direction is without magnetic template.Its advantage is that soft magnetism can improve alignment magnetic field.
Embodiment 3.
A kind of method using said apparatus to suppress neodymium iron boron, comprise the following steps: when magnetic is full of described rubber die 12 upper surface, described electromagnet starts to provide alignment magnetic field, and described rubber seaming chuck 22 declines, magnetic is compressed at above-below direction, and density is increased to 3.9-4.1 gram/cm
3, now described steel seaming chuck 21 lower surface arrives described rubber die 12 upper surface, and magnet blank is subject to up and down, left and right, the pressure in three directions, front and back, when magnet green density reaches 4.6 grams/cm
3-4.7 grams/cm
3time, alignment magnetic field drops to zero, then demagnetized field is provided, after demagnetized field drops to zero, described rubber seaming chuck 22 rises, and with permanent magnetic suction head by the sucking-off from rubber die die cavity of described magnet blank, moves to above discharging box, described permanent magnetic suction head eliminates suction, and discharging box fallen into by described magnet blank.This method only needs a table apparatus to complete needs the function of oriented moulding machine and isostatic pressing machine two equipment realizations in the prior art.
Claims (8)
1. the device that the automatic pressing orientating of neodymium iron boron is shaping, the dynamic model comprising cover half, match with described cover half, for providing the electromagnet of alignment magnetic field and being wrapped in the magnet exciting coil on described electromagnet, it is characterized in that: described cover half comprises metal die sleeve and is arranged at the rubber die in described metal die sleeve, described dynamic model comprises steel seaming chuck and is fixed on the rubber seaming chuck below described steel seaming chuck.
2. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 1 is shaping, it is characterized in that: described electromagnet comprises electromagnet and lower electromagnet, described upper electromagnet is fixed on the upper side of described steel seaming chuck, steel push-down head is provided with below described rubber die, described lower electromagnet is fixed on the downside of described steel push-down head, and described metal die sleeve is nonmagnetic steel cover.
3. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 2 is shaping, is characterized in that: described steel seaming chuck is magnetically soft steel seaming chuck.
4. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 2 is shaping, is characterized in that: described steel seaming chuck is nonmagnetic steel seaming chuck.
5. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 1 is shaping, it is characterized in that: described electromagnet comprises left electromagnet and right electromagnet, described left electromagnet is fixed on the left surface of described metal die sleeve, described right electromagnet is fixed on the right flank of described metal die sleeve, described steel seaming chuck is nonmagnetic steel seaming chuck, the downside of described metal die sleeve can be used as steel push-down head, and described steel push-down head is nonmagnetic steel push-down head.
6. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 5 is shaping, is characterized in that: described metal die sleeve is soft magnetism template perpendicular to the template of getting magnetic direction, is parallel to the template of getting magnetic direction for without magnetic template.
7. the device that the automatic pressing orientating of a kind of neodymium iron boron according to claim 5 is shaping, is characterized in that: described metal die sleeve is without magnetic template perpendicular to the template of getting magnetic direction, and being parallel to the template of getting magnetic direction is without magnetic template.
8. one kind uses the method for device as claimed in claim 1 compacting neodymium iron boron, it is characterized in that comprising the following steps: when magnetic is full of described rubber die upper surface, described electromagnet starts to provide alignment magnetic field, described rubber seaming chuck declines, magnetic is compressed at above-below direction, and density is increased to 3.9-4.1g/cm
3, now described steel seaming chuck lower surface arrives described rubber die upper surface, and magnet blank is subject to up and down, left and right, the pressure in three directions, front and back, when magnet green density reaches 4.6g/cm
3-4.7g/cm
3time, alignment magnetic field drops to zero, then provides demagnetized field, after demagnetized field drops to zero, described rubber seaming chuck rises, with permanent magnetic suction head by the sucking-off from rubber die die cavity of described magnet blank, move to above discharging box, described permanent magnetic suction head eliminates suction, and discharging box fallen into by described magnet blank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210426748.9A CN103111618B (en) | 2012-10-31 | 2012-10-31 | Device of neodymium iron boron automatic suppressing orientation forming and method |
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|---|---|---|---|
| CN201210426748.9A CN103111618B (en) | 2012-10-31 | 2012-10-31 | Device of neodymium iron boron automatic suppressing orientation forming and method |
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| CN103111618A CN103111618A (en) | 2013-05-22 |
| CN103111618B true CN103111618B (en) | 2015-06-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103317130B (en) * | 2013-06-08 | 2016-01-20 | 江苏金石稀土有限公司 | A kind of mould and using method thereof preparing permanent-magnet material radial column |
| CN105575651A (en) * | 2016-03-01 | 2016-05-11 | 京磁材料科技股份有限公司 | Compression molding technology for neodymium iron boron magnet |
| CN106493361B (en) * | 2016-11-09 | 2018-08-21 | 董中天 | Film dry bag magnetic field equal static pressure press |
| CN110860689B (en) * | 2019-11-28 | 2022-04-29 | 徐州迈斯特机械科技有限公司 | Pressing die for annular powder metallurgy material green body |
| CN111640552B (en) * | 2020-05-25 | 2022-02-15 | 华中科技大学 | Permanent magnet compression molding method and device |
| CN113458391A (en) * | 2021-06-30 | 2021-10-01 | 百琪达智能科技（宁波）股份有限公司 | Neodymium iron boron shaping parallel press system |
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| US5213703A (en) * | 1990-02-09 | 1993-05-25 | Matsushita Electric Industrial Co., Ltd. | Anisotropic neodymium-iron-boron system plastic bonded magnet |
| CN201511542U (en) * | 2009-06-02 | 2010-06-23 | 山西京宇天成科技有限公司 | Neodymium iron boron large circular ring parallel press device |
| CN101819846A (en) * | 2009-02-27 | 2010-09-01 | 孙立生 | Preparation method of high-performance permanent magnet |
| CN101850421A (en) * | 2010-06-23 | 2010-10-06 | 宁波永久磁业有限公司 | Molding device for NdFeB materials |
| CN202207798U (en) * | 2011-09-13 | 2012-05-02 | 安徽天宇磁业有限公司 | Neodymium iron boron material moulding apparatus |
Family Cites Families (1)
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| JP2010202933A (en) * | 2009-03-04 | 2010-09-16 | Mitsubishi Materials Corp | Method for producing green compact and method for producing composite soft magnetic material and premix powder |
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| US5213703A (en) * | 1990-02-09 | 1993-05-25 | Matsushita Electric Industrial Co., Ltd. | Anisotropic neodymium-iron-boron system plastic bonded magnet |
| CN101819846A (en) * | 2009-02-27 | 2010-09-01 | 孙立生 | Preparation method of high-performance permanent magnet |
| CN201511542U (en) * | 2009-06-02 | 2010-06-23 | 山西京宇天成科技有限公司 | Neodymium iron boron large circular ring parallel press device |
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