CN201900265U - Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring - Google Patents
Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring Download PDFInfo
- Publication number
- CN201900265U CN201900265U CN2010206373582U CN201020637358U CN201900265U CN 201900265 U CN201900265 U CN 201900265U CN 2010206373582 U CN2010206373582 U CN 2010206373582U CN 201020637358 U CN201020637358 U CN 201020637358U CN 201900265 U CN201900265 U CN 201900265U
- Authority
- CN
- China
- Prior art keywords
- punch die
- punching die
- die
- annulus
- upper plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 20
- 230000035699 permeability Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract 10
- 238000004904 shortening Methods 0.000 abstract 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The utility model relates to a forming die for improving the coaxiality of inner and outer diameters of a sintered NdFeB circular ring, which comprises a left punching die, a right punching die, a rear lateral plate, a front lateral plate, a bottom plate, an upper plate, a center pole, a left pressure transmission block and a right pressure transmission block. In the forming process, the left punching die, the right punching die, the rear lateral plate, the front lateral plate, the bottom plate, the upper plate and the center pole are sealed into a circular ring forming cavity. The bottom plate and the upper plate are made of high permeability steel and other components are made of low permeability metal. The bottom plate at both sides of the left punching die and the right punching die is provided with 2 to 4 eudipleural positioning bolts. In the utility model, when the forming die is in a charging state, the left punching die and the right punching die are respectively pressed against the left and right positioning bolts to realize position limit of the left punching die and the right punching die and make the left and right parts of the forming cavity symmetrical, so that the coaxiality of the inner and outer diameters of the circular ring is improved. The forming die is beneficial for reducing grinding processing allowance, shortening the grinding processing time and reducing the production cost.
Description
Technical field
The utility model relates to a kind of mould of sintered NdFeB annulus.
Background technology
The sintered NdFeB annulus is mainly used in the electro-acoustic element, at present the common technological process of production is: static pressure → vacuum-sintering → mill processing → electroplating surface such as raw material → vacuum melting → suction hydrogen fragmentation → air-flow abrasive dust → pressing under magnetic field → wait, after the pressing under magnetic field operation, the annulus blank is able to moulding, and the height of external diameter axiality has bigger influence to the follow-up mill processing cost in back in the annulus blank.Number of patent application is neodymium-iron-boron cylindrical form permanent magnetic material forming method and the particular manufacturing craft that 200710071571.4 document discloses the band longitudinal hole, the product of producing is the sintered NdFeB annulus, it is the Magnetic field press of above-below direction that this technology adopts pressing direction, the reinforced earlier semicircle that suppresses, reinforced again, suppress other semicircle, obtain the annulus of complete body at last, the whole operation more complicated, there is density variation in other twice compacting, causes the coaxiality deviation of the endoporus of product annulus behind oversintering and external diameter bigger.Released the Magnetic field press that a kind of pressing direction is a left and right directions in the industry in the recent period in addition, can realize once the reinforced annulus that suppresses, its supporting mould comprises left punch die, right punch die, back side panel, front side board, base plate, upper plate, newel, left side pressure transmission piece, right pressure transmission piece, left side punch die during moulding, right punch die, back side panel, front side board, base plate, upper plate and newel sealing are the annulus forming cavity, Nd-Fe-B powder is in the forming cavity, the left side of Magnetic field press, the pressure that right oil cylinder produces is passed to the pressure transmission piece, punch die, thereby realize compacting to material powder in the forming cavity, after compacting finishes, move on the upper plate, extract newel then, take back side panel and front side board apart, remove left punch die and right punch die, thereby obtained neodymium iron boron annulus blank, this technology has been simplified the moulding difficulty of annulus greatly, be a kind of more advanced technology, but the shortcoming of this technology is the initial position of reinforced stage left side punch die and right punch die to be determined by range estimation, cause a forming cavity left side easily, right size is asymmetric, and then influences the interior external diameter axiality of annulus blank.
The utility model content
The purpose of this utility model is to provide a kind of mould that improves external diameter axiality in the sintered NdFeB annulus, the inside and outside footpath of the sintered NdFeB annulus blank axiality that adopts this mould molding to come out is higher, reduces production costs thereby helping reducing grinds allowance, shorten the mill machining period.
The technical solution of the utility model is, comprise left punch die, right punch die, back side panel, front side board, base plate, upper plate, newel, left pressure transmission piece, right pressure transmission piece, left side punch die, right punch die, back side panel, front side board, base plate, upper plate and newel sealing are the annulus forming cavity during moulding, base plate and upper plate are the high magnetic permeability steel, miscellaneous part is the low magnetic permeability metal, it is characterized in that, on the base plate of left punch die and right punch die both sides, be provided with a symmetrical 2-4 pilot pin.
Described low magnetic permeability metal is meant that maximum relative permeability is in the metal between 1.0 ~ 1.1, as magnetism-free stainless steel, non-magnesium hard alloy, no magnetic potassium steel, copper, aluminium, copper alloy or aluminium alloy etc.
Described high magnetic permeability steel is meant that maximum relative permeability is greater than 200 carbon steel.
The beneficial effects of the utility model: when mould is in the state of feeding in raw material, left side punch die leans on left and right pilot pin respectively mutually with right punch die, the position of realizing left punch die and right punch die limits, make the forming cavity left-right symmetry, thereby the inside and outside footpath of annulus axiality is improved, helps reducing mill allowance, shorten the mill machining period, reduce production costs.
Description of drawings
Fig. 1 is the main pseudosection of embodiment 1;
Fig. 2 is the reinforced vertical view of state during the initial stage for embodiment 1 is in;
Fig. 3 is the main pseudosection of embodiment 2;
Fig. 4 is the reinforced vertical view of state during the initial stage for embodiment 2 is in.
The specific embodiment
Embodiment 1: see figures.1.and.2:
Present embodiment comprises left punch die 1, right punch die 2, back side panel 3, front side board 4, base plate 5, upper plate 6, newel 7, left pressure transmission piece 8, right pressure transmission piece 9.On the base plate 5 of left punch die 1, right punch die 2 both sides, be provided with 4 pilot pins 10 altogether.
The course of work of the present utility model is as follows: in the groove on back side panel 3 and the front side board 4 insertion base plates 5, then that left punch die 1 is relative with right punch die 2 concave surfaces, insert respectively in the relative gap of back side panel 3 and front side board 4, the back side of left side punch die 1 and right punch die 2 is respectively near left pilot pin and pilot pin, left side punch die 1, right punch die 2, back side panel 3, front side board 4, base plate 5, upper plate 6 and newel 7 sealings are the annulus forming cavity, and NdFeB magnetic powder is in the forming cavity.The pressure that the left and right oil cylinder of Magnetic field press produces is passed to pressure transmission piece, punch die, thereby realizes the compacting to material powder in the forming cavity, after compacting finishes, move on the upper plate 6, extract newel 7 then, take back side panel 3 and front side board 4 apart, remove left punch die 3 and right punch die 4, obtain neodymium iron boron annulus blank.Because pilot pin 10 defines the initial position of left punch die 1 and right punch die 2, ensured the left-right symmetry degree of forming cavity, thereby the external diameter axiality is higher in the neodymium iron boron annulus blank that obtains, blank after vacuum-sintering in the external diameter axiality can reach in the 0.3mm, greatly reduce the mill difficulty of processing.
Embodiment 2:
With reference to Fig. 3 and Fig. 4:
Present embodiment is as different from Example 1: be provided with 2 pilot pins 10 altogether on the base plate 5 of left punch die 1, right punch die 2 both sides.
The course of work of the present utility model is as follows: in the groove on back side panel 3 and the front side board 4 insertion base plates 5, then that left punch die 1 is relative with right punch die 2 concave surfaces, insert respectively in the relative gap of back side panel 3 and front side board 4, the back side of left side punch die 1 and right punch die 2 is respectively near left pilot pin and pilot pin, left side punch die 1, right punch die 2, back side panel 3, front side board 4, base plate 5, upper plate 6 and newel 7 sealings are the annulus forming cavity, NdFeB magnetic powder is in the forming cavity, the left side of Magnetic field press, the pressure that right oil cylinder produces is passed to the pressure transmission piece, punch die, thereby realize compacting to material powder in the forming cavity, after compacting finishes, move on the upper plate 6, extract newel 7 then, take back side panel 3 and front side board 4 apart, remove left punch die 3 and right punch die 4, obtain neodymium iron boron annulus blank.Because pilot pin 10 defines the initial position of left punch die 1 and right punch die 2, ensured the left-right symmetry degree of forming cavity, thereby the external diameter axiality is higher in the neodymium iron boron annulus blank that obtains, blank after vacuum-sintering in the external diameter axiality can reach in the 0.4mm, greatly reduce the mill difficulty of processing.
Claims (3)
1. mould that improves external diameter axiality in the sintered NdFeB annulus, comprise left punch die, right punch die, back side panel, front side board, base plate, upper plate, newel, left pressure transmission piece, right pressure transmission piece, left side punch die, right punch die, back side panel, front side board, base plate, upper plate and newel sealing are the annulus forming cavity during moulding, base plate and upper plate are the high magnetic permeability steel, miscellaneous part is the low magnetic permeability metal, it is characterized in that, on the base plate of left punch die and right punch die both sides, be provided with a symmetrical 2-4 pilot pin.
2. a kind of mould that improves external diameter axiality in the sintered NdFeB annulus according to claim 1, it is characterized in that, described low magnetic permeability metal is meant that maximum relative permeability is in the metal between 1.0 ~ 1.1, and described metal is magnetism-free stainless steel, non-magnesium hard alloy, no magnetic potassium steel, copper, aluminium, copper alloy or aluminium alloy.
3. a kind of mould that improves external diameter axiality in the sintered NdFeB annulus according to claim 1 is characterized in that, described high magnetic permeability steel is meant that maximum relative permeability is greater than 200 carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206373582U CN201900265U (en) | 2010-12-02 | 2010-12-02 | Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206373582U CN201900265U (en) | 2010-12-02 | 2010-12-02 | Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201900265U true CN201900265U (en) | 2011-07-20 |
Family
ID=44270868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206373582U Expired - Fee Related CN201900265U (en) | 2010-12-02 | 2010-12-02 | Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201900265U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873327A (en) * | 2012-10-05 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Rubidium, iron and boron magnetic steel forming mold |
| CN103084577A (en) * | 2013-02-07 | 2013-05-08 | 哈尔滨工业大学 | Device and method for step type hot extrusion preparation of Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet |
| CN104607634A (en) * | 2015-01-22 | 2015-05-13 | 包头市金蒙汇磁材料有限责任公司 | Machining method for inner hole and outer circle of annular rare-earth permanent magnet and special device |
| CN108551074A (en) * | 2018-05-29 | 2018-09-18 | 上海科发电子产品有限公司 | A kind of sintering mold for connector |
| CN109470542A (en) * | 2018-10-19 | 2019-03-15 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of complex magnetic permeability test sample preparation mold and application method |
-
2010
- 2010-12-02 CN CN2010206373582U patent/CN201900265U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873327A (en) * | 2012-10-05 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Rubidium, iron and boron magnetic steel forming mold |
| CN103084577A (en) * | 2013-02-07 | 2013-05-08 | 哈尔滨工业大学 | Device and method for step type hot extrusion preparation of Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet |
| CN103084577B (en) * | 2013-02-07 | 2014-10-08 | 哈尔滨工业大学 | Device and method for step type hot extrusion preparation of Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet |
| CN104607634A (en) * | 2015-01-22 | 2015-05-13 | 包头市金蒙汇磁材料有限责任公司 | Machining method for inner hole and outer circle of annular rare-earth permanent magnet and special device |
| CN108551074A (en) * | 2018-05-29 | 2018-09-18 | 上海科发电子产品有限公司 | A kind of sintering mold for connector |
| CN108551074B (en) * | 2018-05-29 | 2024-05-24 | 上海科发电子产品有限公司 | Sintering mold for connector |
| CN109470542A (en) * | 2018-10-19 | 2019-03-15 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of complex magnetic permeability test sample preparation mold and application method |
| CN109470542B (en) * | 2018-10-19 | 2021-04-16 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of complex magnetic permeability test sample preparation mold and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202291403U (en) | Pressing and forming mould for neodymium-iron-boron cylinder | |
| CN201900265U (en) | Forming die for improving coaxiality of inner and outer diameters of sintered NdFeB circular ring | |
| CN202317014U (en) | Multipole-oriented and radiation-oriented multifunctional magnetic field press | |
| CN101850421B (en) | Molding device for NdFeB materials | |
| CN105575651A (en) | Compression molding technology for neodymium iron boron magnet | |
| CN105185561A (en) | Compression molding method of neodymium-iron-boron magnet | |
| CN103111618B (en) | Device of neodymium iron boron automatic suppressing orientation forming and method | |
| CN105081317B (en) | A kind of mould of a multi-cavity mold | |
| CN111360268A (en) | Vertical forming die and forming method for sintered neodymium-iron-boron annular magnet | |
| CN203649402U (en) | Die of magnetic-field formed square billets for sintering neodymium iron boron | |
| CN104368812A (en) | Pressing die for bonded neodymium-iron-boron magnetic body | |
| CN203109227U (en) | Novel full-automatic forming mold for neodymium iron boron materials | |
| CN218362085U (en) | Pressing forming device for processing sintered neodymium-iron-boron permanent magnet | |
| CN202696299U (en) | Rare earth permanent magnet generator rotor sheet | |
| CN204486779U (en) | A kind of mould preparing ring-shaped sintered neodymium-iron-boron magnet | |
| CN102962449A (en) | Magnetic material powder forming device and method | |
| CN201132216Y (en) | Compacting tool set for preforming big square type Nd-Fe-B material | |
| CN102294479B (en) | Method for preparing sintered neodymium iron boron device | |
| CN201089012Y (en) | Nd-Fe-B fillet mould | |
| CN109014187A (en) | Magnetic ball blank forms whole set of die and its production method | |
| CN105575575A (en) | NdFeB magnet manufacturing method | |
| CN204835858U (en) | Inner arc working face magnetic shoe mould | |
| CN204338855U (en) | A kind of compacting tool set of Agglutinate neodymium-iron-boron magnet | |
| CN203124735U (en) | NdFeB sintering forming mold | |
| CN203610582U (en) | T-shaped iron flattening mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |