DE3868705D1 - MULTIPOLE ROTOR. - Google Patents
MULTIPOLE ROTOR.Info
- Publication number
- DE3868705D1 DE3868705D1 DE8888201180T DE3868705T DE3868705D1 DE 3868705 D1 DE3868705 D1 DE 3868705D1 DE 8888201180 T DE8888201180 T DE 8888201180T DE 3868705 T DE3868705 T DE 3868705T DE 3868705 D1 DE3868705 D1 DE 3868705D1
- Authority
- DE
- Germany
- Prior art keywords
- grains
- mixture
- moulding
- moulding device
- magnetic material
- 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 - Lifetime
Links
- 230000005405 multipole Effects 0.000 title 1
- 238000000465 moulding Methods 0.000 abstract 6
- 239000000203 mixture Substances 0.000 abstract 4
- 239000000696 magnetic material Substances 0.000 abstract 3
- 239000011230 binding agent Substances 0.000 abstract 2
- 239000012467 final product Substances 0.000 abstract 1
- 239000012634 fragment Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
- H01F41/028—Radial anisotropy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Centrifugal Separators (AREA)
Abstract
Method and devices for producing a magnetic object, to be moulded in a moulding device from a mixture of grains of magnetic material and hardening binding agent, said object having pole areas of small dimensions, the mixture being subjected in a moulding cavity of a moulding body of the moulding device to temperature changes, gravity, mechanic forces or magnetic forces, or combinations of those. The invention comprising the reduction of a strong, permanent magnet to fully magnetized anisotropic permantly magnetic material, the reduction of the fragments of fully magnetized anisotropic permanently magnetic material to grains, until all grains are smaller than the width of a pole area, mixing those grains with the hardening binding agent, inserting the mixture into the moulding device, and ensuring that the mixture hardens in the moulding device, providing the permanently magnetized object as the final product.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8701394A NL8701394A (en) | 1987-06-16 | 1987-06-16 | MULTI-POLE ROTOR. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3868705D1 true DE3868705D1 (en) | 1992-04-09 |
Family
ID=19850152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8888201180T Expired - Lifetime DE3868705D1 (en) | 1987-06-16 | 1988-06-09 | MULTIPOLE ROTOR. |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0295744B1 (en) |
| JP (1) | JP2587271B2 (en) |
| KR (1) | KR950007949B1 (en) |
| AT (1) | ATE73259T1 (en) |
| DE (1) | DE3868705D1 (en) |
| ES (1) | ES2031228T3 (en) |
| NL (1) | NL8701394A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02178011A (en) * | 1988-12-29 | 1990-07-11 | Seikosha Co Ltd | Manufacture of annular permanent magnet, annular permanent magnet manufactured thereby and mold for annular permanent magnet |
| GB2237935A (en) * | 1989-11-02 | 1991-05-15 | Abrosimov Vladimir A | Method of making articles from magnetically hard ferrites and a device for comminuting magnetically hard ferrites |
| KR20010082882A (en) * | 2000-02-22 | 2001-08-31 | 강유석 | A tree preserved plate |
| CH715188A1 (en) | 2018-07-20 | 2020-01-31 | Sequent SA | Connected watch including a mechanical energy harvesting device. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840763A (en) * | 1973-07-09 | 1974-10-08 | Gen Electric | Low flux density permanent magnet field configuration |
| US4579607A (en) * | 1982-04-19 | 1986-04-01 | Matsushita Electric Industrial Company, Limited | Permanent Mn-Al-C alloy magnets and method for making same |
| JPS60211908A (en) * | 1984-04-06 | 1985-10-24 | Seiko Epson Corp | Manufacturing method of cylindrical permanent magnet |
| JPS60224201A (en) * | 1984-04-20 | 1985-11-08 | Matsushita Electric Works Ltd | Manufacture of rare earth cobalt magnet |
| JPS60227408A (en) * | 1984-04-26 | 1985-11-12 | Seiko Epson Corp | Permanent magnet manufacturing method |
-
1987
- 1987-06-16 NL NL8701394A patent/NL8701394A/en not_active Application Discontinuation
-
1988
- 1988-06-09 ES ES198888201180T patent/ES2031228T3/en not_active Expired - Lifetime
- 1988-06-09 AT AT88201180T patent/ATE73259T1/en not_active IP Right Cessation
- 1988-06-09 DE DE8888201180T patent/DE3868705D1/en not_active Expired - Lifetime
- 1988-06-09 EP EP88201180A patent/EP0295744B1/en not_active Expired - Lifetime
- 1988-06-11 KR KR1019880007069A patent/KR950007949B1/en not_active IP Right Cessation
- 1988-06-16 JP JP63147036A patent/JP2587271B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2031228T3 (en) | 1992-12-01 |
| EP0295744A1 (en) | 1988-12-21 |
| JPS6426348A (en) | 1989-01-27 |
| NL8701394A (en) | 1989-01-16 |
| ATE73259T1 (en) | 1992-03-15 |
| KR950007949B1 (en) | 1995-07-21 |
| EP0295744B1 (en) | 1992-03-04 |
| KR890001120A (en) | 1989-03-18 |
| JP2587271B2 (en) | 1997-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |