CN101834048A - Magnetic ring with double air gaps and manufacture method thereof - Google Patents
Magnetic ring with double air gaps and manufacture method thereof Download PDFInfo
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- CN101834048A CN101834048A CN200910215184A CN200910215184A CN101834048A CN 101834048 A CN101834048 A CN 101834048A CN 200910215184 A CN200910215184 A CN 200910215184A CN 200910215184 A CN200910215184 A CN 200910215184A CN 101834048 A CN101834048 A CN 101834048A
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Abstract
The invention relates to a magnetic ring with double air gaps and a manufacture method thereof, which belong to the technical field of manufacture of magnetic products. The manufacture method of the magnetic ring with double air gaps sequentially comprises the following steps of: (1) making a soft magnetic ferrite compact: arranging at least one semicircular groove with a semicircular section on one surface of the compact; (2) flat grinding a binding combined surface; (3) adhering two compacts by using adhesive, wherein solid particles with sizes coincident with the air gap value h are mixed; (4) boring opposite semicircular grooves of two adhered compacts, grinding the external parts of the two compacts by a centerless grinder or machining sleeve columns so as to machine the two adhered compacts into one or a plurality of ring-shaped magnetic columns; and (5) cutting the ring-shaped magnetic columns into N finished magnetic rings according to the prescribed thickness, wherein the thickness of two adhered gaps of the finished magnetic ring is the air gap value h.
Description
Technical field
The present invention relates to a kind of magnet ring and manufacture method thereof, belong to the technical field that magnetic product is manufactured with two air gaps.
Background technology
As everyone knows, can on magnet ring, process one air gap usually, adjust the inductance value of magnet ring by control width of air gap value for satisfying the requirement of soft magnet ferrite magnetic ring inductance characteristic.Each factory adopts the cutting way to process the magnet ring air gap at present, owing to be subjected to the restriction of cutting grinding wheel manufacturing technology, the width of air gap value is less than the cutting blade price comparison costliness of 0.2mm, cutting efficiency, can cut off area and all can be restricted, the width of air gap value just can't have been produced less than the air gap of 0.06mm, because the technology that can produce the section of the following thickness of 0.06mm at present at home and even few very few in the world, is exactly also can't use the magnet ring air gap to cut up; Though present laser incision technology can cut out the following slit of 0.06mm, the degree of depth that can cut has only the production that also can't use the soft magnetism magnet ring in the 0.5mm to come up; Owing to limit on the cutting technique, make soft magnetism magnet ring inductance characteristic not reach more smart more accurate requirement, it is one of bottleneck of inductance electronic device production technology.
Chinese patent discloses a kind of magnet ring (notification number: CN2753059) in the electric-power wire communication signal coupling again, it mainly comprises magnet and shell, and magnet is made up of two parts, and shell also is made up of two parts, and it is coated on outside the magnet, is provided with the PVC pad between two magnets.Two parts of the magnet ring magnet that technique scheme provides need to fix by shell, and air gap is then formed by the PVC pad.There are the following problems for it: one, and two parts assembling of magnet ring magnet is more loaded down with trivial details, and production cost is higher; Its two, size of gaps be difficult to control, be subjected to the restriction of PVC pad; Especially, when the size of magnet ring hour, the problems referred to above will be particularly outstanding.
Summary of the invention
The object of the invention is to provide a kind of arbitrarily big small air gap of producing, easy to assembly, production cost is lower, size of gaps is easy to control, is particularly useful for the magnet ring and the manufacture method thereof of the two air gaps of band of small size magnet ring, and it is bigger to have solved existing single-air gap magnetic ring air gap value size limitation, or two parts of existing two existing magnet ring magnets of air gap magnet ring assembling is more loaded down with trivial details, and production cost is higher, and size of gaps is difficult to control, is subjected to the problems such as restriction of PVC pad.
Above-mentioned technical purpose of the present invention solves by the following technical programs: it comprises two specifications and measure-alike arc magnetic patch, the central angle of described arc magnetic patch is less than 180 °, fix by adhesive bonds between the end of described two arc magnetic patch, facing mutually of two arc magnetic patch constitutes air gap h between the end.The present invention will constitute between two arc magnetic patch of magnet ring and fix by adhesive bonds, can be convenient to control the size of air gap, and will be simultaneously easy to assembly, when the size of magnet ring hour particularly suitable.
As preferably, described air gap h is 10 μ m-0.2mm.The present invention can be controlled at the air gap h of magnet ring the value of any size by selecting to be entrained in the particle grain size difference in the adhesive.
As preferably, be mixed with glass particle or ceramic particle in the described adhesive.By the size of selecting different glass particle of particle diameter or ceramic particle can control air gap easily; the microparticle that mixes can be the solid of bead or ceramic bead and so on; also nonmetallic slices, because selected particle diameter or thickness are quite uniform, air gap h value is more stable.Because mix the particle diameter of material or one-tenth-value thickness 1/10 minimum to 10 μ m or littler, just air gap h value can be accomplished littler reason.
As preferably, the end face of described arc magnetic patch forms matsurface, and the roughness Ra of matsurface is between 1.6～3.2, can make adhesive reach a better adhesion effect.
The manufacture method of the magnet ring of the two air gaps of band comprises the steps: in turn
(1), makes the soft magnetic ferrite briquet: on surface of briquet, be provided with the half slot of at least one cross section semicircular in shape, the little 0.1～0.3mm of radius of the radius ratio finished product magnet ring of half slot;
(2), plain grinding processing: this side surface that briquet is provided with half slot is sticking faying face, and sticking faying face is carried out plain grinding processing, makes the big 0.2mm～0.5mm of radius of the thickness of briquet than finished product magnet ring;
(3), the half slot of two briquets is relative with half slot, sticking faying face and sticking faying face adopt adhesive to bond together relatively, is mixed with the bead or the ceramic bead solid particle of the particle diameter that conforms to air gap value h in adhesive;
(4), the relative half slot place of two briquets after the good processing of holing that will bond, outside to two briquets is ground processing or is carried out sleeve column processing by centerless grinder, thereby the two good briquets that will bond are processed into one or more annular magnetic posts, and guarantee that the bonding slit is on the diameter of annular magnetic post;
(5), with the annular magnetic post in accordance with regulations thickness cut into N spare finished product magnet ring, the thickness in bonding slit, two places of finished product magnet ring is air gap value h.
The present invention takes the mode of splicing; be combined into a complete magnet ring by two semi-rings with adhesive form; mixing in the adhesive some microparticles or other medium makes in the magnet ring and to form one slit and also claim air gap; the microparticle that mixes can be the solid of bead or ceramic bead and so on; it also can be nonmetallic slices; because selected particle grain size or thickness are quite uniform, air gap value h is more stable.Because the particle diameter of dopant or one-tenth-value thickness 1/10 minimum are to 10 μ m or littler, just air gap value h can accomplish littler reason.Wherein, briquet is to carry out sintering with ferrite powder again through mould molding to form.Wherein, step (4) thus in when only there is a half slot on the surface of briquet, then can grind the outside mill of two briquets that processing will bond together and be processed into the magnetic post by centerless grinder; Two briquets that then can will bond together by sleeve column processing when there is a plurality of half slot on the surface of briquet are processed into a plurality of magnetic posts.
As preferably, the half slot that surface of the briquet in the described step (1) has a plurality of cross sections semicircular in shape, a plurality of half slots are parallel each other and distribute equably.Simultaneously a plurality of half slots are set on briquet and can improve production efficiency of the present invention.
As preferably, the sticking faying face to briquet increases rough processing do sandblast again after step (2) is carried out plain grinding processing to the adhesive surface of briquet, and roughness Ra is between 1.6～3.2, can make adhesive reach a better adhesion effect.
As preferably, a plurality of annular magnetic posts of described step (4) processing gained have the common bottom branch that a plurality of annular magnetic posts are linked together, thus the clamping when being convenient to cut.
As preferably, the flatness of the sticking faying face after the processing of step (2) plain grinding is in 0.005mm, and the depth of parallelism is in 0.01mm.
Therefore, the present invention has can produce arbitrarily big small air gap, and easy to assembly, production cost is lower, and size of gaps is easy to control, is particularly useful for the characteristics of small size magnet ring.
Description of drawings
Fig. 1 is a kind of structural representation of magnet ring of the present invention;
Fig. 2 is a kind of structural representation of briquet of the present invention;
Fig. 3 is the briquet structural representation after the sandblast of the present invention's process increases rough processing;
Fig. 4 is the structural representation that the present invention bonds together two briquets;
Fig. 5 is a kind of structural representation of drill of the present invention;
Fig. 6 is a kind of structural representation that the present invention overlaps pivot bur;
Fig. 7 is a kind of structural representation of magnetic post of the present invention;
Fig. 8 is the structural representation of the another kind of briquet of the present invention;
Fig. 9 is two structural representations that briquet bonds together shown in Figure 8;
Figure 10 is the another kind of structural representation of magnetic post of the present invention.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: as shown in Figure 1, comprise two specifications and measure-alike arc magnetic patch 1, the central angle of arc magnetic patch is less than 180 °, fixing between the end of two arc magnetic patch 1 by adhesive 2 bondings, the facing mutually between the end of two arc magnetic patch 1 constituting the air gap value is the air gap of h, and air gap value h is 0.1mm, is mixed with ceramic particle in the adhesive 2, the particle diameter of ceramic particle equates that with air gap h the end face of arc magnetic patch forms matsurface.
Carry out sintering with ferrite powder magnetic ferrite magnetic core production technology routinely again through mould molding and produce as shown in Figure 2 briquet 5, on surface of briquet, be provided with the half slot 3 of a plurality of cross sections semicircular in shape, a plurality of half slots are parallel each other and distribute the little 0.1～0.3mm of radius of the radius ratio finished product magnet ring of half slot equably; Utilize the through type surface grinding machine that briquet is polished to the order of adhesive surface by the first back side again, and control corresponding size well; As shown in Figure 3, next the adhesive surface 4 of briquet 5 is carried out sandblast and increase rough processing, make adhesive surface 4 and adhesive that adhesive force preferably be arranged with high pressure draught; Select the bead of corresponding particle diameter and adhesive to mix by the air gap value, as shown in Figure 4, on the adhesive surface 4 of briquet, coat uniformly the adhesive that is mixed with bead two briquets are involutory, the alignment stick together, so, bonding neat product is placed on baking box carries out the glue curing processing owing to there is an air gap value between sandwich bead two briquets; After treating glue curing, the hole that utilizes the half slot of two briquets that 6 pairs of drills as shown in Figure 5 bond together the to constitute processing of holing makes the aperture of circular hole identical with the aperture of finished product magnet ring; Utilize as shown in Figure 6 cover pivot bur 7 and anchor clamps on high-speed drilling machine or Digit Control Machine Tool, briquet to be processed into a plurality of annular magnetic posts 8 (referring to Fig. 7), leave the common bottom part 9 about 1.5mm below the magnetic post 8 so that be convenient to clamp section the time; By anchor clamps that the annular magnetic post clamping that processes is reliable, on cutting machine, the magnetic post is processed into N sheet finished product magnet ring as shown in Figure 1; Being that the finished product magnet ring is advanced the processing of falling the acute angle at last, is to carry out at vibrating ball-mill, utilizes quartz sand or ceramic bead to make abrasive material, has so just finished the whole course of processing of band gas magnet ring.
Embodiment 2: carry out sintering with ferrite powder magnetic ferrite magnetic core production technology routinely again through mould molding and produce as shown in Figure 8 briquet 5, on surface of briquet, be provided with the half slot 3 of a cross section semicircular in shape, the little 0.1～0.3mm of radius of the radius ratio finished product magnet ring of half slot; Utilize the through type surface grinding machine that briquet is polished to the order of adhesive surface by the first back side again, and control corresponding size well; Next with high pressure draught the adhesive surface of briquet 5 is carried out sandblast and increase rough processing, make adhesive surface and adhesive that adhesive force preferably be arranged; Select the bead of corresponding particle diameter and adhesive to mix by the air gap value, coat uniformly on the adhesive surface of briquet that the adhesive that is mixed with bead is 5 involutory with two briquets, alignment sticks together (referring to Fig. 9), so, bonding neat product is placed on baking box carries out the glue curing processing owing to there is an air gap value between sandwich bead two briquets; After treating glue curing, the hole that utilizes the half slot of two briquets that 6 pairs of drills as shown in Figure 5 bond together the to constitute processing of holing makes the aperture of circular hole identical with the aperture of finished product magnet ring; Utilize centerless grinder and anchor clamps that briquet is processed into annular magnetic post 8 (referring to Figure 10); By anchor clamps that the annular magnetic post clamping that processes is reliable, on cutting machine, the magnetic post is processed into N sheet finished product magnet ring as shown in Figure 1; Being that the finished product magnet ring is advanced the processing of falling the acute angle at last, is to carry out at vibrating ball-mill, utilizes quartz sand or ceramic bead to make abrasive material, has so just finished the whole course of processing of band gas magnet ring.
Claims (10)
1. the magnet ring of the two air gaps of band, comprise two specifications and measure-alike arc magnetic patch, the central angle that it is characterized in that described arc magnetic patch is fixed by adhesive bonds between the end of described two arc magnetic patch less than 180 °, and facing mutually of two arc magnetic patch constitutes air gap h between the end.
2. the magnet ring of the two air gaps of band according to claim 1 is characterized in that described air gap h is 10 μ m-0.2mm.
3. the magnet ring of the two air gaps of band according to claim 1 and 2 is characterized in that being mixed with in the described adhesive glass particle or ceramic particle.
4. the magnet ring of the two air gaps of band according to claim 1 and 2 is characterized in that the end face of described arc magnetic patch forms matsurface.
5. the manufacture method of the magnet ring of the two air gaps of the described band of claim 1 is characterized in that comprising the steps: in turn
(1), makes the soft magnetic ferrite briquet: on surface of briquet, be provided with the half slot of at least one cross section semicircular in shape, the little 0.1～0.3mm of radius of the radius ratio finished product magnet ring of half slot;
(2), plain grinding processing: this side surface that briquet is provided with half slot is sticking faying face, and sticking faying face is carried out plain grinding processing, makes the big 0.2mm～0.5mm of radius of the thickness of briquet than finished product magnet ring;
(3), the half slot of two briquets is relative with half slot, sticking faying face and sticking faying face adopt adhesive to bond together relatively, is mixed with the bead or the ceramic bead solid particle of the particle diameter that conforms to air gap value h in adhesive;
(4), the relative half slot place of two briquets after the good processing of holing that will bond, outside to two briquets is ground processing or is carried out sleeve column processing by centerless grinder, thereby the two good briquets that will bond are processed into one or more annular magnetic posts, and guarantee that the bonding slit is on the diameter of annular magnetic post;
(5), with the annular magnetic post in accordance with regulations thickness cut into N spare finished product magnet ring, the thickness in bonding slit, two places of finished product magnet ring is air gap value h.
6. the manufacture method of the magnet ring of the two air gaps of band according to claim 5 is characterized in that: the parallel each other and distribution equably of the half slot that surface of the briquet in the described step (1) has a plurality of cross sections semicircular in shape, a plurality of half slots.
7. according to the manufacture method of the magnet ring of the two air gaps of claim 5 or 6 described bands, it is characterized in that: the sticking faying face to briquet increases rough processing do sandblast again after step (2) is carried out plain grinding processing to the adhesive surface of briquet.
8. according to the manufacture method of the magnet ring of the two air gaps of claim 5 or 6 described bands, it is characterized in that: a plurality of annular magnetic posts of described step (4) processing gained have the common bottom branch that a plurality of annular magnetic posts are linked together.
9. according to the manufacture method of the magnet ring of the two air gaps of claim 5 or 6 described bands, it is characterized in that: the flatness of the sticking faying face after the processing of step (2) plain grinding is in 0.005mm, and the depth of parallelism is in 0.01mm.
10. the manufacture method of the magnet ring of the two air gaps of band according to claim 6 is characterized in that: the roughness Ra of sticking faying face is between 1.6～3.2 after sandblast increases rough the processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102151842A CN101834048B (en) | 2009-12-24 | 2009-12-24 | Magnetic ring with double air gaps and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102151842A CN101834048B (en) | 2009-12-24 | 2009-12-24 | Magnetic ring with double air gaps and manufacture method thereof |
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| CN101834048A true CN101834048A (en) | 2010-09-15 |
| CN101834048B CN101834048B (en) | 2012-04-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376445A (en) * | 2011-08-25 | 2012-03-14 | 天长市中德电子有限公司 | Machining method of magnetic core |
| CN102637510A (en) * | 2012-05-10 | 2012-08-15 | 无锡希恩电气有限公司 | Segmented iron core |
| CN103532072A (en) * | 2013-09-16 | 2014-01-22 | 华北电力大学 | Method for restraining radio interference of power transmission line by applying magnetic rings |
| CN105185532A (en) * | 2015-09-14 | 2015-12-23 | 广东新昇电业科技股份有限公司 | Reactor iron core structure with rough bonding surfaces and process method of reactor iron core structure |
| CN108890538A (en) * | 2018-07-06 | 2018-11-27 | 杭州江潮电机有限公司 | Reduce the blasting craft method of magnetic bridge position magnetic conductivity in lateral laminated type rotor structure |
| CN118522521A (en) * | 2024-07-23 | 2024-08-20 | 广东尚朋电磁科技有限公司 | Wide-temperature ultra-low-power-consumption magnetic element and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201119225Y (en) * | 2007-08-24 | 2008-09-17 | 黄珀慧 | Fixer structure of cooling device |
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2009
- 2009-12-24 CN CN2009102151842A patent/CN101834048B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376445A (en) * | 2011-08-25 | 2012-03-14 | 天长市中德电子有限公司 | Machining method of magnetic core |
| CN102637510A (en) * | 2012-05-10 | 2012-08-15 | 无锡希恩电气有限公司 | Segmented iron core |
| CN103532072A (en) * | 2013-09-16 | 2014-01-22 | 华北电力大学 | Method for restraining radio interference of power transmission line by applying magnetic rings |
| CN103532072B (en) * | 2013-09-16 | 2016-04-20 | 华北电力大学 | A kind of method applied magnet ring and suppress transmission line radio interference |
| CN105185532A (en) * | 2015-09-14 | 2015-12-23 | 广东新昇电业科技股份有限公司 | Reactor iron core structure with rough bonding surfaces and process method of reactor iron core structure |
| CN108890538A (en) * | 2018-07-06 | 2018-11-27 | 杭州江潮电机有限公司 | Reduce the blasting craft method of magnetic bridge position magnetic conductivity in lateral laminated type rotor structure |
| CN118522521A (en) * | 2024-07-23 | 2024-08-20 | 广东尚朋电磁科技有限公司 | Wide-temperature ultra-low-power-consumption magnetic element and preparation method thereof |
| CN118522521B (en) * | 2024-07-23 | 2024-11-15 | 广东尚朋电磁科技有限公司 | Wide-temperature ultra-low-power-consumption magnetic element and preparation method thereof |
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| CN101834048B (en) | 2012-04-11 |
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