CN202804184U - Neodymium iron boron magnetic body mold - Google Patents
Neodymium iron boron magnetic body mold Download PDFInfo
- Publication number
- CN202804184U CN202804184U CN 201220492201 CN201220492201U CN202804184U CN 202804184 U CN202804184 U CN 202804184U CN 201220492201 CN201220492201 CN 201220492201 CN 201220492201 U CN201220492201 U CN 201220492201U CN 202804184 U CN202804184 U CN 202804184U
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- CN
- China
- Prior art keywords
- iron boron
- neodymium iron
- magnetic body
- mold
- mould
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Abstract
The utility model discloses a neodymium iron boron magnetic body mold. The neodymium iron boron magnetic body mold comprises a mold fit orientation pole, an upper mold and a lower mold, wherein the edge of a mold head of the upper mold is in an outward circular bead structure. The neodymium iron boron magnetic body mold has the advantages of being capable of improving the size uniformity after the sintering of the neodymium iron boron cylinder magnetic body mold so that the size of different positions after the sintering of the neodymium iron boron cylinder magnetic body mold is more uniform and smooth. Meanwhile, powder is saved, stock utilization is improved and difficulty of subsequent processing is reduced.
Description
Technical field
The utility model relates to ferrimagnet and makes the field, is specifically related to the die mould of sintered NdFeB cylinder blank, relates in particular to a kind of neodymium-iron-boron mould.
Background technology
In the die mould production process of neodymium iron boron magnetic body, need orientation that neodymium iron boron powder particle is arranged under magnetic fields unanimously, when orientation, attraction because of the orientation magnetic head, cause in the die cavity many near the powder of head position, the both sides accumulation powder middle than die cavity, although the cylinder product is the same with the apparent size of cylinder mid portion by the cartridge place behind the die mould, it is high that density is wanted.And need behind the neodymium iron boron product die mould to realize the densified of volume by vacuum-sintering, this characteristic, volume can shrink after just causing sintering, after the contraction, the cylinder product is slightly large by the volume at the cartridge place volume middle than cylinder, product design is specification not, so affect the utilization rate of material, has also increased the losing angle rate in mill processing.
Summary of the invention
The purpose of this utility model is to provide a kind of can make the more uniform neodymium-iron-boron mould of different parts size behind the neodymium iron boron cylinder product sintering.
Neodymium-iron-boron mould of the present utility model comprises mould applying orientation cartridge, upper trimming die and lower punch die, and the die head edge of described upper trimming die is export-oriented fillet structure.
Even for guaranteeing the overall leveling behind the neodymium iron boron cylinder product sintering, described fillet structure radius 0.5mm ~ 3mm.
The application of the utility model neodymium-iron-boron mould can improve the dimensional homogeneity behind the neodymium iron boron cylindrical magnet sintering, the different parts size is more even more smooth after making neodymium iron boron cylinder product sintering, save simultaneously powder, improved stock utilization, also reduced the difficulty in the processing of rear road.
Description of drawings
Fig. 1 is the structural representation of neodymium-iron-boron mould in the prior art;
Fig. 2 is the structural representation after adopting structure shown in Figure 1 with neodymium iron boron powder particle die mould and sintering;
Fig. 3 is the structural representation of the utility model neodymium-iron-boron mould;
Fig. 4 is the regional I structure for amplifying schematic diagram among Fig. 3;
Fig. 5 is the structural representation after adopting structure shown in Figure 3 with neodymium iron boron powder particle die mould and sintering.
Among the figure: 01, upper trimming die; 02, lower punch die; 03, mould is fitted and is orientated cartridge; 04, treats die mould neodymium iron boron powder; 05, fillet structure.
The specific embodiment
Neodymium-iron-boron mould of the present utility model, comprise mould applying orientation cartridge 03, upper trimming die 01 and lower punch die 02, fit to form between orientation cartridge 03, upper trimming die 01 and the lower punch die 02 at mould and place the space for the treatment of die mould neodymium iron boron powder 04, the die head edge of upper trimming die 01 is the outside that the center of circle of fillet is positioned at upper trimming die for export-oriented fillet structure 05(); Even for guaranteeing the overall leveling behind the neodymium iron boron cylinder product sintering, this fillet structure radius is 0.5mm ~ 3mm.The utility model is done the fillet shape at the die head edge of mould, although also large than interlude near cartridge place product density behind die mould, but size will adopt little behind the tack punch die die mould shown in Figure 1, therefore behind sintering shrinkage and the apparent size of interlude can be consistent, saved powder, improve stock utilization, also reduced the difficulty in the processing of rear road.The application of the utility model neodymium-iron-boron mould can improve the dimensional homogeneity behind the neodymium iron boron cylindrical magnet sintering, make neodymium iron boron cylinder product sintering after the different parts size more even more smooth.
Claims (2)
1. a neodymium-iron-boron mould comprises mould applying orientation cartridge, upper trimming die and lower punch die, and it is characterized in that: the die head edge of described upper trimming die is export-oriented fillet structure.
2. neodymium-iron-boron mould as claimed in claim 1 is characterized in that: described fillet structure radius 0.5mm ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492201 CN202804184U (en) | 2012-09-25 | 2012-09-25 | Neodymium iron boron magnetic body mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492201 CN202804184U (en) | 2012-09-25 | 2012-09-25 | Neodymium iron boron magnetic body mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202804184U true CN202804184U (en) | 2013-03-20 |
Family
ID=47863128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220492201 Expired - Fee Related CN202804184U (en) | 2012-09-25 | 2012-09-25 | Neodymium iron boron magnetic body mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202804184U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170620A (en) * | 2013-03-20 | 2013-06-26 | 宁德市星宇科技有限公司 | Neodymium iron boron magnetic body forming die |
| CN103990796A (en) * | 2014-05-27 | 2014-08-20 | 安徽大地熊新材料股份有限公司 | Novel NdFeB powder orientation forming die |
| CN105081317A (en) * | 2015-09-18 | 2015-11-25 | 北京京磁电工科技有限公司 | Multiple-cavity mould |
-
2012
- 2012-09-25 CN CN 201220492201 patent/CN202804184U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170620A (en) * | 2013-03-20 | 2013-06-26 | 宁德市星宇科技有限公司 | Neodymium iron boron magnetic body forming die |
| CN103170620B (en) * | 2013-03-20 | 2015-06-17 | 宁德市星宇科技有限公司 | Neodymium iron boron magnetic body forming die |
| CN103990796A (en) * | 2014-05-27 | 2014-08-20 | 安徽大地熊新材料股份有限公司 | Novel NdFeB powder orientation forming die |
| CN103990796B (en) * | 2014-05-27 | 2016-06-29 | 安徽大地熊新材料股份有限公司 | A kind of Nd-Fe-B powder oriented moulding mould |
| CN105081317A (en) * | 2015-09-18 | 2015-11-25 | 北京京磁电工科技有限公司 | Multiple-cavity mould |
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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: 20130320 Termination date: 20140925 |
|
| EXPY | Termination of patent right or utility model |