CN104368812A - Pressing die for bonded neodymium-iron-boron magnetic body - Google Patents
Pressing die for bonded neodymium-iron-boron magnetic body Download PDFInfo
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- CN104368812A CN104368812A CN201410700183.8A CN201410700183A CN104368812A CN 104368812 A CN104368812 A CN 104368812A CN 201410700183 A CN201410700183 A CN 201410700183A CN 104368812 A CN104368812 A CN 104368812A
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- die
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- upper trimming
- middle mould
- rod
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Abstract
The invention discloses a pressing die for a bonded neodymium-iron-boron magnetic body. The pressing die comprises an upper punching die, a middle die, a lower punching die and a core rod. A tubular upper punching die punch and a tubular lower punching die punch are bonded to the front end of the hollow upper punching die with a T-shaped cross section and the front end of the hollow lower punching die with a T-shaped cross section respectively. A matching rod is bonded to the front end of the core rod. A middle die core is arranged at the wall of a center hole of the middle die through an embedded opening in an interference fit mode. The matching rod is inserted into the middle die core and located at the axis of the middle die core. The matching rod is sleeved with the upper punching die punch and the lower punching die punch in a spaced mode. The upper punching die punch and the lower punching die punch are both in clearance fit with the inner wall of the middle die core. The pressing die is simple in structure and convenient to operate, is used for molding the bonded neodymium-iron-boron magnetic body and can bear pressure of more than 400 t; since release agents are not needed, it can be guaranteed that holding-on caused by heating expansion in the pressing process will not happen, powder leakage and powder blockage are avoided, the service life is long, and the productivity is high.
Description
Technical field
The invention belongs to powder compacting compacting tool set field, be specifically related to a kind of compacting tool set of Agglutinate neodymium-iron-boron magnet.
Background technology
Along with the continuous expansion that neodymium-iron-boron magnetic material is applied at industrial circle, some higher to magnetic property requirements, larger-size magnets need to produce with compression molding method, cohesive neodymium iron boron magnetic particle hardness is higher, very easily corrode, for pursuing higher magnetic property, mould should bear larger pressing pressure, knockout press, and be not suitable in pressing process using releasing agent, these are badly in need of a kind of compacting tool set for molding bonded NdFeB magnetic powder, this mould needs the life-span longer, economy is good, meets the compacting of more than 400t press power.
Summary of the invention
The present invention proposes for solving prior art Problems existing, its objective is the compacting tool set providing a kind of Agglutinate neodymium-iron-boron magnet.
Technical scheme of the present invention is: a kind of compacting tool set of Agglutinate neodymium-iron-boron magnet, comprise upper trimming die, middle mould, lower punch die and plug, the hollow upper trimming die of the T-shaped shape in cross section, the upper trimming die drift of the bonding tubulose of lower punch die front end difference, lower die-punch, the bonding cooperation rod in plug front end, hole wall place, Zhong Mo center is provided with middle mould core rod by embedding mouth interference fit, described cooperation rod is inserted in the cavity of middle mould core rod, coordinate in the gap between rod and middle mould core rod and upper trimming die drift is housed, lower die-punch, described upper trimming die drift, lower die-punch and middle mould core rod inwall are matched in clearance.
Coordinate excellent and upper trimming die drift, lower die-punch monolateral gap 0.006mm ~ 0.020mm, middle mould core rod and upper trimming die drift, the monolateral gap 0.011mm ~ 0.020mm of lower die-punch, above-mentioned each mating surface all refines and polishing.
Structure of the present invention is simple, easy to operate, provide a kind of compacting tool set shaping for Agglutinate neodymium-iron-boron magnet, the pressure of more than 400t can be born, do not need releasing agent, can ensure can not be engaged because of expanded by heating in pressing process, turn avoid the generation of Lou powder, card powder situation, long service life, productivity ratio is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein:
1 upper trimming die 2 upper trimming die drift
Mould in mould core rod 4 in 3
5 times die-punch, 6 times punch dies
7 coordinate excellent 8 plugs.
Detailed description of the invention
Below, with reference to drawings and Examples, the present invention is described in detail:
As shown in Figure 1, a kind of compacting tool set of Agglutinate neodymium-iron-boron magnet, comprise upper trimming die 1, middle mould 4, lower punch die 6 and plug 8, the hollow upper trimming die 1 of the T-shaped shape in cross section, the upper trimming die drift 2 of the bonding tubulose of lower punch die 6 front end difference, lower die-punch 5, the bonding cooperation rod 7 in plug 8 front end, hole wall place, middle mould 4 center is provided with middle mould core rod 3 by embedding mouth interference fit, described cooperation rod 7 is inserted in the cavity of middle mould core rod 3, coordinate in the gap between rod 7 and middle mould core rod 3 and upper trimming die drift 2 is housed, lower die-punch 5, described upper trimming die drift 2, lower die-punch 5 is matched in clearance with middle mould core rod 3 inwall.
Described upper trimming die 1, lower punch die 6 material are 12Cr, and the material of upper trimming die drift 2, lower die-punch 5 is SKH9 high-speed steel.
The material of described plug 8 is 40Cr, and the material coordinating rod 7 is SKH9 high-speed steel.
The material of middle mould 4 is 40Cr, and the material of middle mould core rod 3 is WC60 wolfram steel.
Coordinate the monolateral gap 0.006mm ~ 0.020mm of rod 7 and upper trimming die drift 2, lower die-punch 5, middle mould core rod 3 and upper trimming die drift 2, the monolateral gap 0.011mm ~ 0.020mm of lower die-punch 5, above-mentioned each mating surface all refines and polishing.
Pressing process of the present invention comprises the following steps:
Upper trimming die 1 is mentioned by (I), and upper trimming die drift 2 is along with mould core rod 3 in upper trimming die 1 disengaging.
In the chamber that neodymium-iron-boron powder is filled into lower die-punch 5, middle mould core rod 3 and coordinates rod 7 to be formed by (II).
(III) presses down upper trimming die 1, makes upper trimming die drift 2 be inserted into middle mould core rod 3 inwall place.
(IV) upper trimming die 1 and middle mould 4 press down simultaneously.
(V) keeps pressure.
(VI) mentions upper trimming die 1, mould core rod 3 during upper trimming die drift 2 is departed from.
Middle mould 4 presses down by (VII), and middle mould core rod 3 presses down along with middle mould 4 simultaneously.
Under (VIII), stamping forming product ejects by die-punch 5.
Structure of the present invention is simple, easy to operate, provide a kind of compacting tool set shaping for Agglutinate neodymium-iron-boron magnet, the pressure of more than 400t can be born, do not need releasing agent, can ensure can not be engaged because of expanded by heating in pressing process, turn avoid the generation of Lou powder, card powder situation, long service life, productivity ratio is high.
Claims (2)
1. the compacting tool set of an Agglutinate neodymium-iron-boron magnet, comprise upper trimming die (1), middle mould (4), lower punch die (6) and plug (8), it is characterized in that: the hollow upper trimming die (1) of the T-shaped shape in cross section, the upper trimming die drift (2) of the bonding tubulose of lower punch die (6) front end difference, lower die-punch (5), bonding cooperation rod (7) in plug (8) front end, hole wall place, middle mould (4) center is provided with middle mould core rod (3) by embedding mouth interference fit, described cooperation rod (7) is inserted in the cavity of middle mould core rod (3), coordinate in the gap between rod (7) and middle mould core rod (3) and upper trimming die drift (2) is housed, lower die-punch (5), described upper trimming die drift (2), lower die-punch (5) and middle mould core rod (3) inwall are matched in clearance.
2. the compacting tool set of Agglutinate neodymium-iron-boron magnet according to claim 1, it is characterized in that: the monolateral gap 0.006mm ~ 0.020mm coordinating excellent (7) and upper trimming die drift (2), lower die-punch (5), middle mould core rod (3) and upper trimming die drift (2), the monolateral gap 0.011mm ~ 0.020mm of lower die-punch (5), above-mentioned each mating surface all refines and polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700183.8A CN104368812A (en) | 2014-11-28 | 2014-11-28 | Pressing die for bonded neodymium-iron-boron magnetic body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700183.8A CN104368812A (en) | 2014-11-28 | 2014-11-28 | Pressing die for bonded neodymium-iron-boron magnetic body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104368812A true CN104368812A (en) | 2015-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410700183.8A Pending CN104368812A (en) | 2014-11-28 | 2014-11-28 | Pressing die for bonded neodymium-iron-boron magnetic body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104368812A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105856613A (en) * | 2016-05-06 | 2016-08-17 | 江苏金泽重型机械有限公司 | Tear shell booster pellet forming mold based on multi-station powder hydraulic machine |
| CN107427917A (en) * | 2015-03-20 | 2017-12-01 | 日立化成株式会社 | The forming method of formed body based on compression moulding |
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| CN202701377U (en) * | 2012-08-22 | 2013-01-30 | 横店集团东磁股份有限公司 | Magnetic tile two-cavity die |
| CN202752605U (en) * | 2012-09-18 | 2013-02-27 | 上海工程技术大学 | Forming mold of bonded permanent magnet |
| CN203459680U (en) * | 2013-08-21 | 2014-03-05 | 自贡硬质合金有限责任公司 | Hemispherical forming die for high-pressure grinding roller column nail |
| CN203541520U (en) * | 2013-08-27 | 2014-04-16 | 常熟市华德粉末冶金有限公司 | Thin-walled shaft sleeve powder metallurgy pressing mold |
| CN204338855U (en) * | 2014-11-28 | 2015-05-20 | 中核(天津)科技发展有限公司 | A kind of compacting tool set of Agglutinate neodymium-iron-boron magnet |
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2014
- 2014-11-28 CN CN201410700183.8A patent/CN104368812A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4087221A (en) * | 1977-01-31 | 1978-05-02 | Remington Arms Company, Inc. | Apparatus for molding powder metal parts |
| EP0399630B1 (en) * | 1989-05-24 | 1995-07-19 | MANNESMANN Aktiengesellschaft | Process for manufacturing composite workpieces from powder |
| JPH0551604A (en) * | 1991-08-20 | 1993-03-02 | Nissan Motor Co Ltd | Device for press-forming powder compact to be sintered |
| JPH08257799A (en) * | 1995-03-24 | 1996-10-08 | Fuji Elelctrochem Co Ltd | Powder compacting die and assembling method therefor |
| CN1578709A (en) * | 2001-08-31 | 2005-02-09 | Gkn金属烧结有限公司 | One-piece joint body constituted by sinter metals |
| CN2923292Y (en) * | 2006-06-20 | 2007-07-18 | 宁波科田磁业有限公司 | Quadrangle forming mould for pressting magnetic material powder |
| CN101516552A (en) * | 2006-09-22 | 2009-08-26 | Gkn烧结金属有限公司 | Thin walled powder metal component manufacturing |
| JP2009127117A (en) * | 2007-11-27 | 2009-06-11 | Hitachi Powdered Metals Co Ltd | Powder compaction method |
| CN201768913U (en) * | 2010-09-08 | 2011-03-23 | 横店集团东磁股份有限公司 | Forming die of a metal powder annular magnetic core product |
| CN202147007U (en) * | 2011-01-26 | 2012-02-22 | 南京金牛机械制造股份有限公司 | Press die and internal rotor pressed thereby |
| CN202172011U (en) * | 2011-08-04 | 2012-03-21 | 中国电子科技集团公司第九研究所 | Radially oriented magnetic field mold |
| CN202701377U (en) * | 2012-08-22 | 2013-01-30 | 横店集团东磁股份有限公司 | Magnetic tile two-cavity die |
| CN202752605U (en) * | 2012-09-18 | 2013-02-27 | 上海工程技术大学 | Forming mold of bonded permanent magnet |
| CN203459680U (en) * | 2013-08-21 | 2014-03-05 | 自贡硬质合金有限责任公司 | Hemispherical forming die for high-pressure grinding roller column nail |
| CN203541520U (en) * | 2013-08-27 | 2014-04-16 | 常熟市华德粉末冶金有限公司 | Thin-walled shaft sleeve powder metallurgy pressing mold |
| CN204338855U (en) * | 2014-11-28 | 2015-05-20 | 中核(天津)科技发展有限公司 | A kind of compacting tool set of Agglutinate neodymium-iron-boron magnet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107427917A (en) * | 2015-03-20 | 2017-12-01 | 日立化成株式会社 | The forming method of formed body based on compression moulding |
| CN105856613A (en) * | 2016-05-06 | 2016-08-17 | 江苏金泽重型机械有限公司 | Tear shell booster pellet forming mold based on multi-station powder hydraulic machine |
| CN105856613B (en) * | 2016-05-06 | 2018-11-06 | 江苏金泽重型机械有限公司 | A kind of tear bombnoun booster gains molding die based on multistation powder hydraulic press |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150225 |