CN102975111A - Grinding method and special device for soft magnetic ferrite magnetic cores - Google Patents
Grinding method and special device for soft magnetic ferrite magnetic cores Download PDFInfo
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- CN102975111A CN102975111A CN2012103138052A CN201210313805A CN102975111A CN 102975111 A CN102975111 A CN 102975111A CN 2012103138052 A CN2012103138052 A CN 2012103138052A CN 201210313805 A CN201210313805 A CN 201210313805A CN 102975111 A CN102975111 A CN 102975111A
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Abstract
The invention discloses a grinding method and a special device for soft magnetic ferrite magnetic cores. The grinding method includes that the magnetic cores are longitudinally arranged in two or more rows in a grinding machine and the arranged magnetic cores are firstly subjected to plane processing and secondly subjected to air gap processing with the same grinding machine. The number of air-gap grinding wheel cutting faces is two or more and the air-gap grinding wheel cutting faces are arranged at the same intervals. The grinding method and the special device for the soft magnetic ferrite magnetic core have the advantages of being high in producing efficiency when grinding, low in processing cost and good in producing precision and conformity.
Description
Technical field
The present invention relates to the deep working method of magnetic elements, relate in particular to a kind of Ginding process and special equipment thereof of soft-magnetic ferrite core.
Background technology
Along with the development in soft magnetic ferrite market and perfect, and be accompanied by the continuous lifting of customer requirement, soft magnetic ferrite and magnetic core element have been proposed more and more higher requirement.For example, the many power ferrite magnetic cores that are used for the single end driver circuit all need out air gap, its purpose mainly is the remanent magnetism when reducing magnetic core and working under the state of dissymmetrical magnetic field, the larger remanent magnetism of air gap is less, just may export larger power with the magnetic core of volume like this, avoid in the magnetic saturation phenomenon that exchanges under large-signal or the direct current biasing, and can control better inductance value, improve the job stability of transformer.
Grinding step is the critical process during the soft-magnetic ferrite core deep processing is produced, especially need to require processing plane or air gap to electrical property according to the client for the opening magnetic core, the plane machining of so-called magnetic core refers to core bank on lapping machine, scabble burr or the male and fomale(M﹠F) of the side column top end face of magnetic core or polish in the flat-faced wheel cutting face that utilizes the flat-faced wheel end that lathe upper end arranges, and makes two magnetic core end faces fully contact the inductance performance that keeps good; So-called air gap processing refers to core bank on lapping machine, utilize the air gap emery wheel cutting face of the air gap emery wheel end that lathe upper end arranges that center pillar or the limit leg of magnetic core are cut weak point, center pillar or the depth of limit leg in magnetic core are that size and the precision according to the magnetic core inductance arranges.The client more pays attention in use inductance stabilization and the uniformity of magnetic core in design magnetic core inductance, because stability and the bad meeting of uniformity cause the quality fluctuation of client self product, wherein stability and the uniformity of the processing of air gap product have considerable influence to core facility.Owing to be subjected to the restriction of the factors such as technology, equipment, emery wheel, clamping apparatus, in the processing of grinding step magnetic core, all adopt traditional plane, the single technological method for processing of air gap all the time, cause the shortcomings such as production efficiency is low, homogeneity of product is bad.
Summary of the invention
The technical problem to be solved in the present invention is that production efficiency is low when solving soft-magnetic ferrite core and grinding, processing cost is high, Product Precision and the bad problem of uniformity.
The technical problem to be solved in the present invention is achieved through the following technical solutions: a kind of Ginding process of soft-magnetic ferrite core, on lapping machine, carry out magnetic core double or arrange longitudinal arrangement more, with same the grinding machine method that air gap processing is carried out in advanced parallel planes processing again to the magnetic core that arranges.
Further: in the Ginding process of above-mentioned soft-magnetic ferrite core, described magnetic core is double along parallel two guide rail directions or arranges longitudinal arrangement more that the height of guide rail is according to the core size design of processing.
The present invention also provides the special equipment of above-mentioned soft-magnetic ferrite core Ginding process, and it comprises that lapping machine, lapping machine upper end arrange the grinding machine assembled shaft, are equipped with flat-faced wheel and the air gap emery wheel that is subjected to logic controller PLC control in the grinding machine assembled shaft; Described flat-faced wheel is provided with the flat-faced wheel cutting face of flat-faced wheel pedestal and flat-faced wheel pedestal front end; Described air gap emery wheel is provided with the air gap emery wheel cutting face of air gap emery wheel pedestal and air gap emery wheel pedestal front end, and described air gap emery wheel cutting face is two or equidistant a plurality of.
Further: in the special equipment of above-mentioned soft-magnetic ferrite core Ginding process, described lapping machine is provided with the guide rail that makes things convenient for the magnetic core proper alignment; Described guide rail is parallel two guide rails; The height of guide rail is according to the core size design of processing.Described grinding machine assembled shaft comprises the grinding machine transverse axis that is driven by drive motor, and the flange size of described grinding machine transverse axis increases to 20～35mm width (according to the adjustment of magnetic core processing row) from existing 16mm, and described drive motor power reaches more than the 2.2KW.
Compared with prior art, the Ginding process of soft-magnetic ferrite core of the present invention carries out magnetic core double on lapping machine or arranges longitudinal arrangement more, with same the grinding machine method that air gap processing is carried out in advanced parallel planes processing again to the magnetic core that arranges.The present invention realizes double or many row's processing of ferrite core plane, air gap fully.Significantly promote production efficiency, guaranteed simultaneously dimensioned precision and the inductance uniformity of magnetic core, satisfied customer requirement.By 30 days, more than 20 batch checking, the average quality level is as follows: machining accuracy: inductance L ± 3%, CPK=1.58; Size ± 0.10mm, CPK=2.03; Unit production capacity: 30K pays/hour more than.Same specification product production capacity is promoted to more than 200%, and product inductance uniformity improves, and good processing accuracy proves that the present invention has reliability, repeatability.
Description of drawings
The cross-sectional of Fig. 1 when to be lapping machine to two row's magnetic cores carry out plane machining;
Fig. 2 is that lapping machine carries out the cross-sectional that air gap adds man-hour to two row's magnetic cores;
The cross-sectional of Fig. 3 when to be lapping machine to three row's magnetic cores carry out plane machining;
Fig. 4 is that lapping machine carries out the cross-sectional that air gap adds man-hour to three row's magnetic cores;
Fig. 5 is the magnetic core sectional view that does not carry out attrition process;
Fig. 6 is the magnetic core sectional view that grinds after midplane is processed;
Fig. 7 is the magnetic core sectional view that grinds after the processing of midplane and air gap;
Wherein, 1 lapping machine, 2 flat-faced wheels, 3 air gap emery wheels, 21 flat-faced wheel pedestals, 22 flat-faced wheel cutting faces, 31 air gap emery wheel pedestals, 32 air gap emery wheel cutting faces, 4 guide rails, 5 magnetic cores, 6 magnetic cores processing air-gap surface.
The specific embodiment
Purport of the present invention is the innovation to flat-faced wheel and grinding air gap emery wheel, and to lathe assembled shaft improve, simultaneously the grinding machine lapping machine is transformed, increase angle regulating function, adopt two guide rail technique for fixing, realize double or many row's processing of ferrite core plane, air gap fully.Significantly promote production efficiency, guaranteed simultaneously dimensioned precision and the inductance uniformity of magnetic core, satisfied customer requirement.Face is described in further detail content of the present invention in conjunction with figure and embodiment.
Embodiment one: such as Fig. 1-2,5-7, a kind of special equipment of soft-magnetic ferrite core Ginding process, it comprises that lapping machine 1, lapping machine upper end arrange the grinding machine assembled shaft, are equipped with flat-faced wheel 2 and the air gap emery wheel 3 that is subjected to logic controller PLC control in the grinding machine assembled shaft; Described flat-faced wheel is provided with the flat-faced wheel cutting face 22 of flat-faced wheel pedestal 21 and flat-faced wheel pedestal front end; Described air gap emery wheel 3 is provided with the air gap emery wheel cutting face 32 of air gap emery wheel pedestal 31 and air gap emery wheel pedestal front end, and described air gap emery wheel cutting face 32 is two, and the air gap emery wheel cutting face 32 described in Fig. 2 is one to one with magnetic core processing air-gap surface 6.Described lapping machine 1 is provided with the two guide rails 4 that make things convenient for the magnetic core proper alignment.Described grinding machine assembled shaft comprises the grinding machine transverse axis that is driven by drive motor, and the flange size of described grinding machine transverse axis increases to the 25mm width from existing 16mm, and described drive motor power reaches 2.2 ± 0.2KW.On lapping machine 1 magnetic core is carried out double longitudinal arrangement along two guide rails, with same the grinding machine method that air gap processing is carried out in advanced parallel planes processing again to the magnetic core that arranges, this sequencing is subjected to the control of logic controller PLC control.Fig. 5 is the magnetic core sectional view that does not carry out attrition process, and magnetic core side column and inner prop burr are a lot of as can be seen from Figure 5, and Fig. 6 is the magnetic core sectional view that grinds after midplane is processed, and the magnetic core side column is smooth, smooth as can be seen from Figure 6; Fig. 7 is the magnetic core sectional view that grinds after the processing of midplane and air gap, and magnetic core middle post has been cut short as can be seen from Figure 7.Its machining accuracy: inductance L ± 3%, CPK=1.58; Size ± 0.10mm, CPK=2.11; Unit production capacity: 30K pays/hour.
Embodiment two: such as Fig. 3-7, a kind of special equipment of soft-magnetic ferrite core Ginding process, it comprises that lapping machine 1, lapping machine upper end arrange the grinding machine assembled shaft, are equipped with flat-faced wheel 2 and the air gap emery wheel 3 that is subjected to logic controller PLC control in the grinding machine assembled shaft; Described flat-faced wheel is provided with the flat-faced wheel cutting face 22 of flat-faced wheel pedestal 21 and flat-faced wheel pedestal front end; Described air gap emery wheel 3 is provided with the air gap emery wheel cutting face 32 of air gap emery wheel pedestal 31 and air gap emery wheel pedestal front end, and described air gap emery wheel cutting face 32 is 3, and the air gap emery wheel cutting face 32 described in Fig. 3 is one to one with magnetic core processing air-gap surface 6.Described lapping machine 1 is provided with the two guide rails 4 that make things convenient for the magnetic core proper alignment.Described grinding machine assembled shaft comprises the grinding machine transverse axis that is driven by drive motor, and the flange size of described grinding machine transverse axis increases to the 27mm width from existing 16mm, and described drive motor power reaches 2.5 ± 0.2KW.On lapping machine 1 magnetic core is carried out three row's longitudinal arrangements along two guide rails, with same the grinding machine method that air gap processing is carried out in advanced parallel planes processing again to the magnetic core that arranges, this sequencing is subjected to the control of logic controller PLC control.Fig. 5 is the magnetic core sectional view that does not carry out attrition process, and magnetic core side column and inner prop burr are a lot of as can be seen from Figure 5, and Fig. 6 is the magnetic core sectional view that grinds after midplane is processed, and the magnetic core side column is smooth, smooth as can be seen from Figure 6; Fig. 7 is the magnetic core sectional view that grinds after the processing of midplane and air gap, and magnetic core middle post has been cut short as can be seen from Figure 7.Its machining accuracy is: inductance L ± 3%, CPK=1.56; Size ± 0.10mm, CPK=2.03; Unit production capacity: 45K pays/hour.
Claims (6)
1. the Ginding process of a soft-magnetic ferrite core is characterized in that: carry out magnetic core double on lapping machine or arrange longitudinal arrangement more, with same the grinding machine method that air gap processing is carried out in advanced parallel planes processing again to the magnetic core that arranges.
2. the Ginding process of soft-magnetic ferrite core according to claim 1, it is characterized in that: described magnetic core is double along parallel two guide rail directions or arranges longitudinal arrangement more.
3. equipment that is exclusively used in claim 1 or 2 described soft-magnetic ferrite core Ginding process, it comprises that lapping machine (1), lapping machine upper end arrange the grinding machine assembled shaft, are equipped with flat-faced wheel (2) and the air gap emery wheel (3) that is subjected to logic controller PLC control in the grinding machine assembled shaft; Described flat-faced wheel is provided with the flat-faced wheel cutting face (22) of flat-faced wheel pedestal (21) and flat-faced wheel pedestal front end; Described air gap emery wheel (3) is provided with the air gap emery wheel cutting face (32) of air gap emery wheel pedestal (31) and air gap emery wheel pedestal front end, it is characterized in that: described air gap emery wheel cutting face (32) is two or equidistant a plurality of.
4. the special equipment of soft-magnetic ferrite core Ginding process according to claim 3, it is characterized in that: described lapping machine (1) is provided with the guide rail (4) that makes things convenient for the magnetic core proper alignment.
5. the special equipment of soft-magnetic ferrite core Ginding process according to claim 4, it is characterized in that: described guide rail is parallel two guide rails.
6. according to claim 4 or the special equipment of 5 described soft-magnetic ferrite core Ginding process, it is characterized in that: described grinding machine assembled shaft comprises the grinding machine transverse axis that is driven by drive motor, the flange size of described grinding machine transverse axis is 20～35mm width, and described drive motor power reaches more than the 2.2KW.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103138052A CN102975111A (en) | 2012-08-20 | 2012-08-20 | Grinding method and special device for soft magnetic ferrite magnetic cores |
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| CN2012103138052A CN102975111A (en) | 2012-08-20 | 2012-08-20 | Grinding method and special device for soft magnetic ferrite magnetic cores |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878874A (en) * | 2013-11-08 | 2014-06-25 | 山东嘉诺电子有限公司 | Soft magnetic ferrite core forming and blanking guide rail device |
| CN104227515A (en) * | 2014-09-01 | 2014-12-24 | 常熟市研明电子元器件厂 | Ferrite core center column grinding device |
| CN105583718A (en) * | 2014-11-07 | 2016-05-18 | 中国科学院微电子研究所 | Chemical mechanical polishing method |
| CN106158346A (en) * | 2016-08-31 | 2016-11-23 | 海宁市飞腾电子有限公司 | A kind of manufacture method of EP type magnetic ferrite magnetic core |
| CN107471082A (en) * | 2017-09-13 | 2017-12-15 | 芜湖市中天密封件有限公司 | The lapping device and Ginding process of aircraft check valve |
| CN107471049A (en) * | 2017-09-18 | 2017-12-15 | 广东肇庆微硕电子有限公司 | Air gap emery wheel, core grinding device and core grinding method |
| CN108098518A (en) * | 2017-12-12 | 2018-06-01 | 江西中磁科技协同创新有限公司 | A kind of soft magnetic materials grinding machine |
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| CN1098347A (en) * | 1993-11-13 | 1995-02-08 | 俞文一 | Soft magnetic ferrite congruent surface fine grinding technology and products thereof |
| US6626742B2 (en) * | 2000-05-04 | 2003-09-30 | Mpm Ltd. | Polishing method and device |
| CN201579680U (en) * | 2010-01-08 | 2010-09-15 | 上海继顺磁性材料有限公司 | Soft magnetic ferrite magnetic core auto-turnover grinding equipment |
| CN201765944U (en) * | 2010-06-11 | 2011-03-16 | 上海继顺磁性材料有限公司 | Equipment for forming double gaps on soft magnetic ferrite magnetic core in one step |
| CN102476349A (en) * | 2010-11-30 | 2012-05-30 | 中芯国际集成电路制造(上海)有限公司 | Chemical mechanical grinding device |
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2012
- 2012-08-20 CN CN2012103138052A patent/CN102975111A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1098347A (en) * | 1993-11-13 | 1995-02-08 | 俞文一 | Soft magnetic ferrite congruent surface fine grinding technology and products thereof |
| US6626742B2 (en) * | 2000-05-04 | 2003-09-30 | Mpm Ltd. | Polishing method and device |
| CN201579680U (en) * | 2010-01-08 | 2010-09-15 | 上海继顺磁性材料有限公司 | Soft magnetic ferrite magnetic core auto-turnover grinding equipment |
| CN201765944U (en) * | 2010-06-11 | 2011-03-16 | 上海继顺磁性材料有限公司 | Equipment for forming double gaps on soft magnetic ferrite magnetic core in one step |
| CN102476349A (en) * | 2010-11-30 | 2012-05-30 | 中芯国际集成电路制造(上海)有限公司 | Chemical mechanical grinding device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878874A (en) * | 2013-11-08 | 2014-06-25 | 山东嘉诺电子有限公司 | Soft magnetic ferrite core forming and blanking guide rail device |
| CN104227515A (en) * | 2014-09-01 | 2014-12-24 | 常熟市研明电子元器件厂 | Ferrite core center column grinding device |
| CN104227515B (en) * | 2014-09-01 | 2016-12-07 | 常熟市研明电子元器件厂 | FERRITE CORE center pillar lapping device |
| CN105583718A (en) * | 2014-11-07 | 2016-05-18 | 中国科学院微电子研究所 | Chemical mechanical polishing method |
| CN105583718B (en) * | 2014-11-07 | 2018-02-02 | 中国科学院微电子研究所 | Chemical mechanical polishing method |
| CN106158346A (en) * | 2016-08-31 | 2016-11-23 | 海宁市飞腾电子有限公司 | A kind of manufacture method of EP type magnetic ferrite magnetic core |
| CN107471082A (en) * | 2017-09-13 | 2017-12-15 | 芜湖市中天密封件有限公司 | The lapping device and Ginding process of aircraft check valve |
| CN107471049A (en) * | 2017-09-18 | 2017-12-15 | 广东肇庆微硕电子有限公司 | Air gap emery wheel, core grinding device and core grinding method |
| CN108098518A (en) * | 2017-12-12 | 2018-06-01 | 江西中磁科技协同创新有限公司 | A kind of soft magnetic materials grinding machine |
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Application publication date: 20130320 |