JPH02113509A - Method of cutting out circular cross-sectional wound core material - Google Patents
Method of cutting out circular cross-sectional wound core materialInfo
- Publication number
- JPH02113509A JPH02113509A JP26663988A JP26663988A JPH02113509A JP H02113509 A JPH02113509 A JP H02113509A JP 26663988 A JP26663988 A JP 26663988A JP 26663988 A JP26663988 A JP 26663988A JP H02113509 A JPH02113509 A JP H02113509A
- Authority
- JP
- Japan
- Prior art keywords
- strips
- circular cross
- iron core
- wound
- cutting out
- 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.)
- Granted
Links
- 239000011162 core material Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims abstract description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009415 formwork Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、トランス等に利用される円形断面巻鉄芯を製
造するための材料を、帯状素材から切抜く方法に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for cutting out a material for manufacturing a circular cross-section wound iron core used in transformers and the like from a strip-shaped material.
従来の技術と発明の課題
円形断面巻鉄芯は、一方向性珪素鋼板を型枠に巻回し、
例えば第３図、第４図に示すような形状としたものであ
り、この鉄芯１の断面略円形の脚２．２に割り型状のボ
ビンを嵌め、これを回しながら電線を巻付けて、トラン
ス等が製造される。Prior Art and Problems of the Invention A circular cross-section wound iron core is produced by winding a unidirectional silicon steel plate around a formwork.
For example, it has a shape as shown in Figs. 3 and 4, and a split-shaped bobbin is fitted into the leg 2.2 of the iron core 1, which has a substantially circular cross section, and the electric wire is wound around it while turning the bobbin. , transformers, etc. are manufactured.
この巻鉄芯の材料は、断面な略円形とするため、幅が始
めに狭く、中央部で広（、終りで再び狭くなる形状であ
ることが必要であり、第５図に示すように、帯状素材３
から左右対称形の所定の幅変化を生じる形状の材料４．
・・・・・・・・・を連続して切抜き、これを個々に分
離して使用すればよい。なおこの図（以下の第６図、第
１図、第２図も同様）では、幅方向に対し、長さ方向を
数十分の−に縮小して表わしている。またこの図の材料
４０巻き始め部分（図中右方）は、内側に巻かれるため
、巻き終り部分（図中左方）より幅変化が急激になって
いる。Since the material of this wound iron core has a substantially circular cross section, the width must be narrow at the beginning, wide at the center, and then narrow again at the end, as shown in Figure 5. Strip material 3
4. A material having a shape that causes a left-right symmetrical predetermined width change from 4.
. . . can be continuously cut out and used separately. In this figure (the same applies to the following figures 6, 1, and 2), the length direction is reduced to several tens of minutes less than the width direction. Further, in this figure, the width of the material 40 at the beginning of winding (on the right in the figure) is wound inward, so the width changes more rapidly than at the end of the winding (on the left in the figure).
しかしこの第５図の切抜き方法は、素材３の両端に生じ
る廃棄部分５．５の面積が太き（、経済性が劣るため実
用的でない。However, the cutting method shown in FIG. 5 is not practical because the area of waste portions 5.5 generated at both ends of the material 3 is large (and the cost is poor).
このため第６図に示す切抜き方法が案出されている。す
なわち、切抜くべき材料６．・・・を左右対称ではなく
、一方の側縁が直線状となるようにして幅の大きさの変
化のみを第５図の材料４と同様となるようにし、これを
連続されて１の素材７の両側から２条切抜き、かつ両栄
の材料の凹凸が嵌まり合うように配置したものである（
特公昭６１−２２８５１号公報参照）。For this reason, a cutting method shown in FIG. 6 has been devised. That is, the material to be cut out6. . . . are not left-right symmetrical, but one side edge is straight, so that only the change in width is the same as material 4 in Fig. 5, and this is continued to form material 1. Two stripes are cut out from both sides of 7 and arranged so that the unevenness of the Ryoei material fits together (
(See Japanese Patent Publication No. 61-22851).
この切抜き方法によれば、廃棄部分８の面積は減少し、
経済的となる。しかし材料６．・・・の−側縁を直線状
としたため、幅方向の中心が一定位置となるよう幅方向
に変形させながら巻回しなければならない。このため完
成した巻鉄芯の断面は歪んだ形状となり易（、ボビンの
回転がスムーズでなくなり作業能率が低下し易い。また
素材の長手方向、すなわち一方向性珪素鋼の最大透磁率
の得られる方向が巻鉄芯の中心軸方向に対し斜め方向と
なるため、磁気性能の低下を招来する。According to this cutting method, the area of the waste portion 8 is reduced;
It becomes economical. But material 6. Since the negative side edge of . As a result, the cross section of the completed wound iron core tends to have a distorted shape (the bobbin does not rotate smoothly and work efficiency tends to decrease). Since the direction is oblique to the central axis direction of the wound iron core, the magnetic performance deteriorates.
そこで本発明は、廃棄部分面積を減少させ、かつ巻回時
の幅方向変形を減少させた円形断面巻鉄芯材料の切抜き
方法を得ることを目的としたものである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for cutting out a wound iron core material having a circular cross section, which reduces the area of the waste portion and reduces deformation in the width direction during winding.
課題を解決するための手段
本発明は、型枠に巻回して断面略円形の鉄芯を形成する
、幅が始めに狭く、中央部で広く、終りで再び狭くなる
形状の材料を、連続して２条帯状素材から切抜き、さら
にこの２条の各材料の長手方向接続部が互に約半長だけ
位置がずれ、かつこの２条が互に隙間なく接し、この接
触線が材料の中央部で他の東側へ膨出する波型曲線とな
るよう配置したことを特徴とする円形断面巻鉄芯材料の
切抜き方法である。Means for Solving the Problems The present invention involves continuously winding a material around a formwork to form an iron core having a substantially circular cross section. The two strips are cut out from a two-strip material, and the longitudinal connections of the two strips are shifted from each other by about half a length, and the two strips touch each other without a gap, and this contact line is located at the center of the material. This is a method for cutting out a wound iron core material having a circular cross section, characterized in that the material is arranged so as to form a wave-shaped curve that bulges out to the east.
さらに、各材料の他の条と接し々い側の側縁の長手方向
中央部を直線状としたり、この直線状側縁として、帯状
素材の側縁をそのまま切断しないで用いるようにしたり
、あるいは、両条間の接触線を正弦波状とすることもで
きる。Furthermore, the longitudinal center part of the side edge of each material that is in contact with other strips may be made straight, or the side edge of the strip material may be used as the straight side edge without being cut. , the contact line between the two strips can also be sinusoidal.
実施例及び作用
以下本発明を図示する実施例について具体的に説明する
。Embodiments and Effects Embodiments illustrating the present invention will be specifically described below.
第１図は第１実施例の切抜き方法を示す。この切抜き方
法は、一方向性珪素鋼帯材よりなる帯状素材１０から、
材料］１ａ、・・・・・・、 ｌｌｂ、・・・・・−を
それぞれ長さ方向に連続させて２条切抜く。各材料】１
ａ、・・・・・・１１ｂ、・・・・・・・・・は、型枠
に巻回して断面円形の鉄芯を形成することができるよう
に、幅が始めは狭（、中央部で広く、終りで再び狭くな
るよう変化する形状である。そしてこの２条は、各材料
１１ａ、・・・、ｌｌｂ。FIG. 1 shows the cutting method of the first embodiment. This cutting method starts from a strip material 10 made of unidirectional silicon steel strip material.
[Material] Cut out two continuous strips of 1a, ..., llb, ....- in the length direction. Each material】1
a, . . . 11b, . . . are initially narrow in width (, central part The shape changes so that it is wide at the end and narrow again at the end.The two strips are formed by each material 11a, . . . , llb.
・・・の長手方向接続部１２ａ、・・・・・・、１２ｂ
、・・・が互に約半長だけ位置がずれ、かつこの２条が
互に隙間なく接し、この接触線１３が正弦波状曲線とな
り、各材料の中央部が他の東側へ膨出するようにされて
いる。...longitudinal connection portions 12a, ..., 12b
, ... are shifted from each other by about half a length, and these two strips touch each other without a gap, and this contact line 13 becomes a sinusoidal curve, so that the central part of each material bulges out to the east of the other. is being used.
さらに各材料１］ａ、・・・・・・、１１ｂ、・・・の
他の条と接しない側、すなわち外側の側縁の中央部１４
ａ、・・・、 １４ｂ、・・・は直線状となっている。Further, the center portion 14 of each material 1]a, ..., 11b, ... on the side not in contact with other strips, that is, the outer side edge
a,..., 14b,... are linear.
なお、巻回したとき断面が円形となる材料の中央部を、
一方の側縁な正弦波状とし、他方の側縁を直線状として
実現することは、厳密な数学的計算（二よれば不可能で
あるが、各材料は長さが最大幅の数千倍以上あり、幅変
化は極めて緩やかであることから、実用上は計算値との
差異を許容誤差範囲内に抑えて十分実現可能である。さ
らに各材料］】ａ、・・・・・・、ｌｌｂ、・・・・・
・の両側には全長にわたって廃棄部分１５ａ、１５ｂが
形成される。In addition, the central part of the material that has a circular cross section when wound is
Although it is impossible to achieve a sinusoidal shape on one side and a straight shape on the other side according to rigorous mathematical calculations (2), each material has a length several thousand times greater than its maximum width. Since the width change is extremely gradual, it is practically possible to suppress the difference from the calculated value within the allowable error range.・・・・・・
・Waste portions 15a and 15b are formed over the entire length on both sides.
第２図は第２実施例の切抜き方法を示す。この切抜き方
法は、前記例とほぼ同一であるが、帯状素材２０の側縁
に、材料２１ａ、・・・・・・、 ２１ｂ、・・・・・
・の直線状側縁中央部２４ａ、・・・・・・、２４ｂ、
・・・・・・が一致するようにし、この中央部２４ａ、
・・・・・・、 ２４ｂ、・・・・・・では切断をしな
いこととしている。したがって廃棄部分２５ａ、・・・
・・・、２５ｂ。FIG. 2 shows the cutting method of the second embodiment. This cutting method is almost the same as the above example, but the materials 21a, 21b, .
The straight side edge central portions 24a, . . . , 24b,
... so that they match, and this central portion 24a,
. . ., 24b, . . . do not cut. Therefore, the discarded portion 25a,...
..., 25b.
・・・・・・・・・は断続的に形成される。...... is formed intermittently.
上記本発明の切抜き方法では、両売の材料間の接触線１
３．２３が波型曲線となり、各材料１１ａ、・・・・・
・１１ｂ、・・・・・・、２１ａ、・・・・・・、２１
ｂ、・・・・・・・・・の形状は、第６図の従来例より
左右対称の第５図の形状に近づき、巻回時に、円形断面
を形成するため必要となる幅方向の変形は減少する。こ
のため巻回した鉄芯の歪みは減少し、また素材の長手方
向の巻鉄芯の中心軸方向からの傾きも減少する。In the above cutting method of the present invention, the contact line 1 between the two materials is
3.23 becomes a wave-shaped curve, each material 11a,...
・11b, 21a, 21
The shape of b, . . . is closer to the left-right symmetrical shape of FIG. 5 than the conventional example of FIG. decreases. Therefore, the distortion of the wound iron core is reduced, and the inclination of the longitudinal direction of the material from the central axis direction of the wound iron core is also reduced.
さらに廃棄部分面積についても、２条の材料の長さ方向
位置が約半長ずれ、１の材料の最大幅位置と、他の材料
の始め又は終りの狭幅部分とが隣接するようになってい
るため、十分小さくなっている。特に第２図の例では、
廃棄部分面積の割合は、限界まで小さくなっており、こ
の場合は、第６図の従来例で両売の間の間隙をゼロとし
た場合と同一となる。なお第１図の切抜き方法では、廃
棄部分面積は第２図の場合より太き（なるが、廃棄部分
が連続しているため製造工程において取扱いが容易とな
り、また材料の両側端をともに切断するためパリの大き
さを管理しやすいという利点を有する。Furthermore, regarding the area of the waste portion, the longitudinal positions of the two materials are shifted by about half a length, and the maximum width position of one material is adjacent to the narrow width portion at the beginning or end of the other material. It is small enough. In particular, in the example in Figure 2,
The ratio of the area of the discarded part is reduced to the limit, and in this case, it is the same as when the gap between the two sides is set to zero in the conventional example shown in FIG. Note that in the cutting method shown in Figure 1, the area of the waste portion is larger than in the case of Figure 2 (although the area of the waste portion is continuous, it is easier to handle during the manufacturing process, and both ends of the material are cut at the same time). Therefore, it has the advantage that the size of the paris can be easily managed.
上記例では、いずれも材料の中央部外側の側縁を直線状
としているが、この側縁な曲線状としてもよいことは勿
論であり、特にこの側縁中央部を中心側へわずかに湾曲
させると材料の左右対称性をより高めることができる。In all of the above examples, the side edges outside the central part of the material are straight, but it is of course possible to have a curved side edge, and in particular, the central part of the side edge may be slightly curved toward the center. The left-right symmetry of the material can be further improved.
しかし直線状とした方が、廃棄部分面積が減少し、総合
的には有利となる。However, a straight line is more advantageous overall since the area of the waste portion is reduced.
さらＣ：本発明の両売の材料間の接触線は、波型曲線で
あれば任意のものとしてよいが、特に上記例のように正
弦波状としておくと、製造時に、この接触線を切断する
切断刃を移動させるために、単純なりランク機構や偏心
カムを用いるだけでよ（、製造装置を簡略化することが
できる。Further C: The contact line between the two materials of the present invention may be of any shape as long as it is a wavy curve, but especially if it is sinusoidal as in the above example, this contact line may be cut during manufacturing. To move the cutting blade, a simple rank mechanism or an eccentric cam can be used (the manufacturing equipment can be simplified).
発明の効果
本発明の切抜き方法は、上述のように、１の帯状素材か
ら２条の材料を凹凸が互に嵌め合うようにして切抜（の
で、廃棄部分の面積は少な（なり、高い経済性が得られ
る。しかも両条間の接触線が波型曲線となるようにして
いるので、各材料の形状は左右対称形に近めものとなり
、巻回時の幅方向変形を僅少とし、巻鉄芯断面の歪みや
、最大透磁率方向の傾きを少な（し、高性能でトランス
等の製造が容易な巻鉄芯を実現することができる。Effects of the Invention As described above, the cutting method of the present invention cuts out two strips of material from one strip material so that the concave and convex portions fit into each other (therefore, the area of the discarded portion is small (and it is highly economical). In addition, since the contact line between the two strips forms a wave-like curve, the shape of each material becomes almost symmetrical, minimizing deformation in the width direction during winding. It is possible to realize a wound iron core that has low distortion in the core cross section and inclination in the direction of maximum magnetic permeability (and has high performance and is easy to manufacture into transformers, etc.).
さらに材料中央部の一側縁を直線状としたり、この直線
状側縁として、帯状素材の側縁をそのまま用いるように
すると、より経済性を高めることができ、また２条の材
料間の接触線を正弦波状とすると、切抜き装置をより簡
略なものとすることができる。Furthermore, if one side edge of the central part of the material is made straight, or if the side edge of the strip material is used as the straight side edge, economical efficiency can be further improved, and the contact between the two strips of material can be improved. If the line is sinusoidal, the cutting device can be made simpler.
第１図は本発明の一実施例の切抜き形状を示す平面図、
第２図は他の実施例の切抜き形状を示す平面図である。
第３図は巻鉄芯の一例の正面図、第４図は前回のＩｖ
−１ｖ線拡大端面図である。第５図、第６図は、それぞ
れ従来の切抜き形状を示す平面図である。
１０ 、２０−＝・・・帯状素材、 １１ａ、−、ｌ
ｌｂ、・・、２１ａ、・’＋２１ｂ＋・・・・・・材料
、 １３．２３・・・・・・接触線、 １４ａ、・
・・、１４ｂ、・・・２４ ａ 、−＋ ２４ ｂ ｒ
”’ ”””中央部、 １５ａ、１５ｂ、２５Ｂ、
−，２５ｂｌ・・・・・・・・・廃棄部分。FIG. 1 is a plan view showing a cutout shape of an embodiment of the present invention;
FIG. 2 is a plan view showing the cutout shape of another embodiment. Figure 3 is a front view of an example of the wound iron core, Figure 4 is the previous Iv
-1v line enlarged end view. FIGS. 5 and 6 are plan views showing conventional cutout shapes, respectively. 10, 20-=...band-shaped material, 11a,-,l
lb,..., 21a,...'+21b+...Material, 13.23...Contact line, 14a,...
..., 14b, ...24 a, -+ 24 b r
"'"""Central part, 15a, 15b, 25B,
-, 25bl.......Discarded part.
Claims (4)
始めに狭く、中央部で広く、終りで再び狭くなる形状の
材料を、連続して２条帯状素材から切抜き、さらにこの
２条の各材料の長手方向接続部が互に約半長だけ位置が
ずれ、かつこの２条が互に隙間なく接し、この接触線が
材料中央部で他の条側へ膨出する波型曲線となるよう配
置したことを特徴とする円形断面巻鉄芯材料の切抜き方
法。1. A material whose width is narrow at the beginning, wide in the center, and narrows again at the end, which is wound around the formwork to form an iron core with a substantially circular cross section, is continuously cut out from two strips of material, and then the two strips are cut out. A wavy curve in which the longitudinal connection parts of each material in the strip are shifted from each other by about half a length, and the two strips touch each other without a gap, and this contact line bulges out toward the other strip at the center of the material. A method for cutting out a circular cross-section wound iron core material, characterized in that the core material is arranged so that
側縁の長手方向中央部を直線状とした円形断面巻鉄芯材
料の切抜き方法。2. 2. The method of cutting out a wound iron core material with a circular cross section according to claim 1, wherein the longitudinal center portion of the side edge of each material not in contact with other strips is straight.
側縁をそのまま切断しないで用いる円形断面巻鉄芯材料
の切抜き方法。3. 3. A method for cutting out a circular cross-section wound iron core material according to claim 2, wherein the side edge of the strip material is used as the straight side edge without being cut.
弦波状とした円形断面巻鉄芯材料の切抜き方法。4. 4. A method for cutting out a wound iron core material with a circular cross section according to claim 1, wherein the contact line between the two strips is sinusoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266639A JPH0622182B2 (en) | 1988-10-22 | 1988-10-22 | Cutting method of core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266639A JPH0622182B2 (en) | 1988-10-22 | 1988-10-22 | Cutting method of core material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02113509A true JPH02113509A (en) | 1990-04-25 |
| JPH0622182B2 JPH0622182B2 (en) | 1994-03-23 |
Family
ID=17433624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63266639A Expired - Fee Related JPH0622182B2 (en) | 1988-10-22 | 1988-10-22 | Cutting method of core material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622182B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5210930A (en) * | 1991-08-05 | 1993-05-18 | Denki Tetsushin Industries Co., Ltd. | Method of manufacturing wound core |
| US5307044A (en) * | 1992-09-03 | 1994-04-26 | Denki Tetsushin Industrial Co., Ltd. | Wound core |
| US6407655B1 (en) | 1994-03-16 | 2002-06-18 | Kitamura Kiden Co., Ltd. | Wound core for toroidal transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63132412A (en) * | 1986-11-25 | 1988-06-04 | Kitamura Kiden Kk | Punching-out method of strip material for semicircular cross-section wound core |
| JPH0289304A (en) * | 1988-09-27 | 1990-03-29 | Kitamura Kiden Kk | Method for cutting strap material for winding iron core |
-
1988
- 1988-10-22 JP JP63266639A patent/JPH0622182B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63132412A (en) * | 1986-11-25 | 1988-06-04 | Kitamura Kiden Kk | Punching-out method of strip material for semicircular cross-section wound core |
| JPH0289304A (en) * | 1988-09-27 | 1990-03-29 | Kitamura Kiden Kk | Method for cutting strap material for winding iron core |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5210930A (en) * | 1991-08-05 | 1993-05-18 | Denki Tetsushin Industries Co., Ltd. | Method of manufacturing wound core |
| US5307044A (en) * | 1992-09-03 | 1994-04-26 | Denki Tetsushin Industrial Co., Ltd. | Wound core |
| US6407655B1 (en) | 1994-03-16 | 2002-06-18 | Kitamura Kiden Co., Ltd. | Wound core for toroidal transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622182B2 (en) | 1994-03-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |