CN104092321A - Quadrupole permanent magnetic ferrite magnetic rotor - Google Patents
Quadrupole permanent magnetic ferrite magnetic rotor Download PDFInfo
- Publication number
- CN104092321A CN104092321A CN201410287908.5A CN201410287908A CN104092321A CN 104092321 A CN104092321 A CN 104092321A CN 201410287908 A CN201410287908 A CN 201410287908A CN 104092321 A CN104092321 A CN 104092321A
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- rotor
- magnet
- magnetic
- quadrupole
- annular magnets
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Abstract
The invention discloses a quadrupole permanent magnetic ferrite magnetic rotor. Annular magnets and a rotor body are integrally and coaxially formed. The annular magnets are magnetized in the mode that the adjacent magnetic poles of the annular magnets are different in polarity. The rotor body is located in hollow portions of the annular magnets and is made of plastic. The flux density of the surface of the magnetic rotor is 2600 GS. The quadrupole uniformity difference is smaller than 10 GS. The demagnetization amount of the magnetic rotor is smaller than 10 GS. The quadrupole permanent magnetic ferrite magnetic rotor is small in harmonic wave, slow in demagnetization and capable of ensuring power stability.
Description
Technical field
The present invention relates to a kind of four-pole permanent magnet ferrimagnetism rotor.
Background technology
Magnet rotor is the core component of brushless electric machine, and current rotor weak point is: harmonic wave is large, degaussing is too fast, cannot guaranteed output stable, especially larger on high power motor impact.
Summary of the invention
For the technical problem of above-mentioned existence, the object of the invention is: proposed a kind of four-pole permanent magnet ferrimagnetism rotor.
Technical solution of the present invention is achieved in that a kind of four-pole permanent magnet ferrimagnetism rotor; wherein; ringshaped magnet and rotor subject integral and be coaxially shaped; this ringshaped magnet magnetizes according to the mode of the mutual different poles of magnetic pole of adjacency; this rotor subject is positioned at the hollow bulb of this ringshaped magnet; formed by plastic material, described magnet rotor surface magnetic flux secret degree is 2600GS; The uniformity of described four utmost points differs and is less than 10GS; The demagnetization amount of described magnet rotor is less than 10GS.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
Four-pole permanent magnet ferrimagnetism rotor of the present invention, harmonic wave is little, demagnetization is slow, can guaranteed output stable.
Embodiment
A kind of four-pole permanent magnet ferrimagnetism rotor of the present invention; wherein; ringshaped magnet and rotor subject integral and be coaxially shaped; this ringshaped magnet magnetizes according to the mode of the mutual different poles of magnetic pole of adjacency; this rotor subject is positioned at the hollow bulb of this ringshaped magnet; formed by plastic material, described magnet rotor surface magnetic flux secret degree is 2600GS; The uniformity of described four utmost points differs and is less than 10GS; The demagnetization amount of described magnet rotor is less than 10GS.
Prepare four-pole permanent magnet ferrimagnetism rotor of the present invention, the first step is batching and batch mixing; The pre-high temperature sintering of second step is shaped; The 3rd step is coarse crushing; The 4th step is fine grinding; The 5th step is dry or dehydration; The 6th step is mixing; The 7th step is compression molding; The 8th step is decarburization; The 9th step is sintering; The tenth step is mill processing; The tenth step is test package.
Wherein in the first step, batch mixing adds rare earth; The fine grinding of the 4th step is that pre-ferrite high temperature sintering is shaped and expects to be finely ground to 0.2pm after coarse crushing; Object in the 5th step, the 6th step is to increase the degree of orientation, ensures that magnetic has narrower particle size distribution; The carbonization treatment of the 8th step, has improved the index of technology, has ensured output and quality.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. a four-pole permanent magnet ferrimagnetism rotor; wherein; ringshaped magnet and rotor subject integral and be coaxially shaped; this ringshaped magnet magnetizes according to the mode of the mutual different poles of magnetic pole of adjacency; this rotor subject is positioned at the hollow bulb of this ringshaped magnet; formed by plastic material, it is characterized in that: described magnet rotor surface magnetic flux density is 2600GS; The uniformity of described four utmost points differs and is less than 10GS; The demagnetization amount of described magnet rotor is less than 10GS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287908.5A CN104092321A (en) | 2014-06-25 | 2014-06-25 | Quadrupole permanent magnetic ferrite magnetic rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410287908.5A CN104092321A (en) | 2014-06-25 | 2014-06-25 | Quadrupole permanent magnetic ferrite magnetic rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104092321A true CN104092321A (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410287908.5A Pending CN104092321A (en) | 2014-06-25 | 2014-06-25 | Quadrupole permanent magnetic ferrite magnetic rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104092321A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0308647A1 (en) * | 1987-08-26 | 1989-03-29 | Siemens Aktiengesellschaft | Manufacturing method for an anchor between a rotating shaft and an overmoulded rotating part |
| CN2089671U (en) * | 1990-12-07 | 1991-11-27 | 上海第六电表厂 | New structure of megger generator rotor |
| CN1873843A (en) * | 2006-05-30 | 2006-12-06 | 佛山市顺德区霸菱磁电有限公司 | Magnet powder, and method for preparing magnet by using the powder |
| CN101673606A (en) * | 2008-09-08 | 2010-03-17 | 上海爱普生磁性器件有限公司 | Isotropic bonded NdFeB magnet and magnetic roller consisting of same |
| CN101689424A (en) * | 2007-06-28 | 2010-03-31 | 日立金属株式会社 | R-TM-B radial anisotropic ring magnet, process for production of the same, metal mold for producing the same, and rotor for brushless motor |
| CN102779639A (en) * | 2012-08-14 | 2012-11-14 | 安徽大学 | Method for preparing multi-pole anisotropic permanent magnet ring |
| CN203589872U (en) * | 2013-11-12 | 2014-05-07 | 江门市地尔汉宇电器股份有限公司 | Permanent magnet rotor structure of water pump motor |
-
2014
- 2014-06-25 CN CN201410287908.5A patent/CN104092321A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0308647A1 (en) * | 1987-08-26 | 1989-03-29 | Siemens Aktiengesellschaft | Manufacturing method for an anchor between a rotating shaft and an overmoulded rotating part |
| CN2089671U (en) * | 1990-12-07 | 1991-11-27 | 上海第六电表厂 | New structure of megger generator rotor |
| CN1873843A (en) * | 2006-05-30 | 2006-12-06 | 佛山市顺德区霸菱磁电有限公司 | Magnet powder, and method for preparing magnet by using the powder |
| CN101689424A (en) * | 2007-06-28 | 2010-03-31 | 日立金属株式会社 | R-TM-B radial anisotropic ring magnet, process for production of the same, metal mold for producing the same, and rotor for brushless motor |
| CN101673606A (en) * | 2008-09-08 | 2010-03-17 | 上海爱普生磁性器件有限公司 | Isotropic bonded NdFeB magnet and magnetic roller consisting of same |
| CN102779639A (en) * | 2012-08-14 | 2012-11-14 | 安徽大学 | Method for preparing multi-pole anisotropic permanent magnet ring |
| CN203589872U (en) * | 2013-11-12 | 2014-05-07 | 江门市地尔汉宇电器股份有限公司 | Permanent magnet rotor structure of water pump motor |
Non-Patent Citations (1)
| Title |
|---|
| 徐文生，朱红: "永磁铁氧体工艺技术的新进展", 《磁性材料及器件》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |