JPS6328537A - Electromagnetic control type permanent magnet chuck - Google Patents
Electromagnetic control type permanent magnet chuckInfo
- Publication number
- JPS6328537A JPS6328537A JP17119286A JP17119286A JPS6328537A JP S6328537 A JPS6328537 A JP S6328537A JP 17119286 A JP17119286 A JP 17119286A JP 17119286 A JP17119286 A JP 17119286A JP S6328537 A JPS6328537 A JP S6328537A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- permanent magnet
- magnet
- magnetic
- conversion
- 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.)
- Pending
Links
- 230000004907 flux Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000005284 excitation Effects 0.000 claims abstract description 4
- 230000005415 magnetization Effects 0.000 claims 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 24
- 206010001497 Agitation Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 235000002597 Solanum melongena Nutrition 0.000 description 1
- 244000061458 Solanum melongena Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は永久磁石と電磁石の利点を組合わせて（従来技
術およびその問題点）
磁力チャックを機械テーブルに固定する場合通常はボル
ト締付による。その場合、ボルト締付位置はチャックの
端部にせざるを得す、中心部を固定し難いため中心部が
ふくらむ傾向にある。[Detailed description of the invention] [Object of the invention] (Industrial field of application) The present invention combines the advantages of permanent magnets and electromagnets (prior art and its problems). is due to bolt tightening. In that case, the bolt must be tightened at the end of the chuck, and since it is difficult to secure the center, the center tends to bulge.
中心部を固定することもできなくはないが、チャックに
通し穴を明ける必要があり、しがもこの穴は機械テーブ
ルの器具固定用Ｔ溝位置に合うように設番プなければな
らず煩雑である。Although it is possible to fix the center part, it is necessary to drill a through hole in the chuck, and this hole must be numbered to match the position of the T-slot for fixing the instrument on the machine table, which is complicated. It is.
本発明の目的は、機械テーブルに対し簡便にしかも良好
に固定できる永久磁石チャックを提供することである。An object of the present invention is to provide a permanent magnet chuck that can be simply and well fixed to a machine table.
（問題点を解決するための手段）
上記目的達成のため、本発明では、一端面を磁気作用面
とする一方の磁極部材の周面に固定用永久磁石の磁極を
対向させると共に、前記磁極部材の他の端面に対し変換
用永久磁石の一磁極を対向させてこの変換用永久磁石の
他の磁極を他方の磁極部材に対向させ、前記一方および
他方の各磁極部材の各々をワークおよび機械テーブル用
の磁極とし、前記変換用永久磁石の発生磁束の向きおよ
び必要に応じ大きさを励磁により調整して前記固定永久
磁石の発生磁束通路を変更し、前記ワークおよび機械テ
ーブルとの吸着または解放を行うようにした電磁制御型
永久磁石チャックを構成したものである。(Means for Solving the Problems) In order to achieve the above object, in the present invention, the magnetic pole of a fixed permanent magnet is opposed to the circumferential surface of one magnetic pole member whose one end surface is a magnetically active surface, and the magnetic pole member One magnetic pole of the conversion permanent magnet is opposed to the other end face of the conversion permanent magnet, and the other magnetic pole of the conversion permanent magnet is opposed to the other magnetic pole member, and each of the one and the other magnetic pole members is connected to the workpiece and the machine table. The direction and size of the generated magnetic flux of the conversion permanent magnet are adjusted by excitation to change the generated magnetic flux path of the fixed permanent magnet, and the magnetic flux path of the fixed permanent magnet is changed to attract or release the workpiece and the machine table. This is an electromagnetically controlled permanent magnet chuck configured to perform the following operations.
（作 用）
電磁制御により極性変換する永久磁石の発生磁束は固定
用永久磁石の磁束と相加的もしくは相殺的に作用させる
ことにより吸着表面側ではワークの吸着、解放および機
械テーブルの吸着、解放の少くとも一方を行う。(Function) The magnetic flux generated by the permanent magnet whose polarity is changed by electromagnetic control acts additively or offset with the magnetic flux of the fixed permanent magnet, so that on the attraction surface side, the workpiece is attracted and released, and the machine table is attracted and released. Do at least one of the following.
（実施例）
第１図（ａ）ないしくＣ）は本発明の一実施例を示した
もので、同図（ａ）は平面図、同図（ｂ）は同図（ａ）
のＡ−Ａ線に沿う断面図、同図（Ｃ）は底面図である。(Embodiment) Figures 1(a) to 1C) show an embodiment of the present invention, in which figure 1(a) is a plan view and figure 1(b) is a plan view.
A cross-sectional view taken along the line A-A, and FIG. 3(C) is a bottom view.
この実施例は、磁力チャックは機械テーブルに固定した
ままでワークのＯＮ、ＯＦＦのみを行うものである。In this embodiment, the magnetic chuck is fixed to the machine table and only turns the workpiece on and off.
そして構成は、４つの上部磁極部材１の真下に下部磁極
部材２を配し、上部磁極部材１相互問および上部磁極部
材１と枠３との間に永久磁石４を装入する。永久磁石４
の極性は、同一磁極には同一極性が対向するようにする
のは云うまでもない。The structure is such that a lower magnetic pole member 2 is arranged directly below the four upper magnetic pole members 1, and a permanent magnet 4 is inserted between the upper magnetic pole members 1 and between the upper magnetic pole member 1 and the frame 3. Permanent magnet 4
Needless to say, the polarity of the magnetic poles is such that the same magnetic poles are opposite to each other.
そして上部磁極部材１と下部磁極部材２との間には変換
磁石５を装入する。変換磁石５にはコイル６が設けられ
ており、このコイル６の通電電流の向きに応じて異なる
極性を示す。７は非磁性分極材である。A converting magnet 5 is inserted between the upper magnetic pole member 1 and the lower magnetic pole member 2. The conversion magnet 5 is provided with a coil 6, which exhibits different polarity depending on the direction of the current flowing through the coil 6. 7 is a non-magnetic polarization material.
この構成において、コイル６に変換磁石５の磁束が図に
実線で示すような向きとなるよう励磁電流を流して着磁
する。ここで第１図（ｂ）の変換磁石についてみれば上
側の磁極がＮ、下側の磁極がＳとなり、磁力チャックの
上部磁極１から図示しないワークを通って枠３に至り、
さらに図示しない機械テーブル、下部磁極部材２および
変換磁石５を経て上部磁極部材１に達する磁路と変換枠
３から固定永久磁石４に帰る磁路とが形成される。In this configuration, an excitation current is applied to the coil 6 so that the magnetic flux of the conversion magnet 5 is oriented as shown by the solid line in the figure, thereby magnetizing the coil 6. Here, regarding the conversion magnet shown in FIG. 1(b), the upper magnetic pole is N, the lower magnetic pole is S, and it reaches the frame 3 from the upper magnetic pole 1 of the magnetic chuck through a workpiece (not shown).
Further, a magnetic path reaching the upper magnetic pole member 1 via a machine table (not shown), the lower magnetic pole member 2 and the conversion magnet 5, and a magnetic path returning from the conversion frame 3 to the fixed permanent magnet 4 are formed.
次にコイル６に変換磁石５の磁束が図に破線で示すよう
な向きとなる着磁電流を流したとする。Next, suppose that a magnetizing current is passed through the coil 6 so that the magnetic flux of the converting magnet 5 is directed as shown by the broken line in the figure.
この場合、変換磁石５の極性は０内に示すものとなり、
固定永久磁石４の発生磁束は変換磁石５、下部磁極２を
通り、図示しない機械テーブルから枠３を経て固定永久
磁石４に帰る。つまり、固定永久磁石４の発生磁束、変
換磁石５の発生磁束とともに磁力チャックを機械テーブ
ルに固定するためのみに作用し、ワークの吸着に作用甘
ず、従ってワークは解放される。In this case, the polarity of the conversion magnet 5 is within 0,
The magnetic flux generated by the fixed permanent magnet 4 passes through the conversion magnet 5, the lower magnetic pole 2, and returns to the fixed permanent magnet 4 from the machine table (not shown) via the frame 3. In other words, together with the magnetic flux generated by the fixed permanent magnet 4 and the magnetic flux generated by the conversion magnet 5, it acts only to fix the magnetic chuck to the machine table, but only acts to attract the workpiece, so that the workpiece is released.
第２図は第１図の磁力チャックをテーブルから解放する
例を示したもので、コイル６に流す電流をある値に調整
することにより磁力チャックの機械テーブルに対する吸
着力をＯにするような変換磁石の着磁を行なう。すなわ
ち、機械テーブルヘの吸着力は破線で示す磁束つまり固
定永久磁石４から変換磁石５、下部磁極部材２を経て機
械テーブルに至り、枠３を介して固定永久磁石４に帰る
ものである。そこでこの磁束を打消すように逆向きの磁
束を与えれば機械テーブルへの吸着力は失われる。これ
が−点鎖線で示した磁束である。Figure 2 shows an example of releasing the magnetic chuck shown in Figure 1 from the table. By adjusting the current flowing through the coil 6 to a certain value, the attraction force of the magnetic chuck to the mechanical table is reduced to O. Magnetize the magnet. That is, the attraction force to the machine table is the magnetic flux shown by the broken line, that is, from the fixed permanent magnet 4, through the conversion magnet 5, the lower magnetic pole member 2, to the machine table, and returns to the fixed permanent magnet 4 via the frame 3. Therefore, if a magnetic flux in the opposite direction is applied to cancel this magnetic flux, the attraction force to the machine table will be lost. This is the magnetic flux shown by the -dotted chain line.
この磁束を与えるには図示の磁性体８を用いる必要があ
る。この磁性体８はワークで代用することもできる。そ
してコイル６に与える電流は実験により求めておき、磁
力チャックを移動させる際に等量の電流を流すようにす
る。In order to provide this magnetic flux, it is necessary to use the illustrated magnetic body 8. This magnetic body 8 can also be replaced by a workpiece. The current to be applied to the coil 6 is determined by experiment, and the same amount of current is applied when moving the magnetic chuck.
第３図（ａ） 、 （ｂ） 、 （ｃ）は本発明の他の
実施例を示したもので、同図（ａ）は平面図、同図（ｂ
）は同図（ａ）のＢ−Ｂ線断面図、同図（Ｃ）は底面図
である。Figures 3 (a), (b), and (c) show other embodiments of the present invention, where (a) is a plan view and (b) is a plan view.
) is a sectional view taken along the line B-B in FIG.
この実施例は、ワークおよび機械テーブルの吸着、解放
を同時に行うものである。このための構成として、変換
磁石５の上、下に固定永久磁石４を配して磁力チャック
の中心位置に関し点対称の構成を採っている。点対称と
は寸法的なものまでを云うのではなく、各要素の配置関
係がそのようになっているとの意味である。そして、磁
気回路は図における実線または破線で示すような磁束を
通すように構成されている。In this embodiment, the work and the machine table are simultaneously attracted and released. For this purpose, fixed permanent magnets 4 are arranged above and below the conversion magnet 5, and a point-symmetrical structure is adopted with respect to the center position of the magnetic chuck. Point symmetry does not refer to dimensions, but rather to the arrangement of the elements. The magnetic circuit is configured to pass magnetic flux as shown by solid lines or broken lines in the figure.
これらの磁束はコイル６に何れの向きの電流を流すかに
よって生じるもので、実線で示す磁束によればワークは
磁力チャックに吸着され、磁力チャックは機械テーブル
に吸着される。つまりＯＮ状態である。また破線で示す
磁束は磁力チャック外には出ないからワークにも機械テ
ーブルにも何ら作用しない。つまりＯＦＦ状態である。These magnetic fluxes are generated depending on which direction the current is passed through the coil 6. According to the magnetic flux shown by the solid line, the workpiece is attracted to the magnetic chuck, and the magnetic chuck is attracted to the machine table. In other words, it is in the ON state. Furthermore, since the magnetic flux indicated by the broken line does not go out of the magnetic chuck, it has no effect on the workpiece or the machine table. In other words, it is in the OFF state.
第４図（ａ） 、 （ｂ）は第３図の実施例とよく似た
構成であるが、下側の永久磁石について磁極の向きが図
における左右関係において逆である点で異なる他の実施
例を示している。そして同図（ｂ）は底面図であり、同
図（ａ）は同図（１））のＣ−Ｃ線による断面図である
。4(a) and 4(b) have a configuration very similar to the embodiment shown in FIG. 3, but are different in that the direction of the magnetic pole of the lower permanent magnet is reversed in the left-right relationship in the figure. An example is shown. FIG. 5B is a bottom view, and FIG. 1A is a sectional view taken along the line C--C in FIG.
この磁極の向きの相違により、変換磁石５の磁束の向き
が何れであるかに応じて実線または破線で示す磁束が生
じる。そして実線で示す磁束の場合は磁力チャックがワ
ークを吸着し、機械テーブルから解放され、破線で示す
磁束の場合は磁力チャックが機械テーブルに吸着されワ
ークから解放される。Due to this difference in the direction of the magnetic poles, a magnetic flux is generated as shown by a solid line or a broken line depending on the direction of the magnetic flux of the conversion magnet 5. In the case of the magnetic flux shown by the solid line, the magnetic chuck attracts the workpiece and is released from the machine table, and in the case of the magnetic flux shown by the broken line, the magnetic chuck attracts the workpiece to the machine table and is released from the workpiece.
（変形例）
上記実施例ではいわゆる磁力チャックとして説明してき
たが、これは単一のチャックとして用いる場合の外に複
数個を同時に用いて大きなワークを吸着する場合も含む
。(Modification) Although the above embodiment has been described as a so-called magnetic chuck, this includes not only the case where it is used as a single chuck, but also the case where a plurality of chucks are used simultaneously to attract a large workpiece.
また、磁力チャック以外の用途として、常に一方の側の
み吸着するものはクラッチ、ブレーキとか２者選択動作
するロボットの自動把持用手先として利用できる。さら
に他の実施例も種々のアクチュエータとして利用するこ
ともできる。In addition to magnetic chucks, a device that always attracts only one side can be used as an automatic gripping hand for a robot that selectively operates a clutch or brake. Furthermore, other embodiments may also be used as various actuators.
（発明の効果）
本発明は上述のように、固定永久磁石の発生磁束に対し
変＠磁石の発生磁束を相加的あるいは相殺的に作用させ
て磁束の通路を変更しワーク、機械テーブルの吸着また
は解放を行うようにしたＩこめ、磁力チャックを機械テ
ーブルに固定するための構成が不要であり、しかも従来
の固定手段に比べ格段に取扱いが容易である。そして、
本発明は基本的に永久磁石を利用するものであるため発
熱もなく、使い勝手のよいチャックが提供できる。(Effects of the Invention) As described above, the present invention causes the magnetic flux generated by the variable @ magnet to act additively or offset against the magnetic flux generated by the fixed permanent magnet to change the path of the magnetic flux, thereby attracting workpieces and machine tables. Alternatively, since the magnetic chuck is designed to be released, there is no need for a structure for fixing the magnetic chuck to the machine table, and it is much easier to handle than conventional fixing means. and,
Since the present invention basically uses a permanent magnet, it does not generate heat and can provide a chuck that is easy to use.
第１図（ａ） 、 （ｂ） 、 （ｃ）は本発明の一実
茄例の平面図、そのＡ−ＡＳ！ｊに沿う断面図および底
面図、第２図は第１図の実施例の使用例の説明図、第３
図（ａ） 、 （ｂ） 、 （ｃ）は他の実施例の平面
図、そのＢ−Ｂ線に沿う断面図および底面図、第４図（
ａ）。
（ｂ）はさらに他の実施例の縦断面図および底面間であ
る（平面図は第３図（ａ）と共通である）。
１・・・上部磁極部材、２・・・下部磁極部材、３・・
・枠、４・・・固定永久磁石、５・・・極性変換用永久
磁石、６・・・コイル、７・・・分極材。
出願人代理人 佐 藤 −雄
手続補正書
昭和６１年９ 月／Δ日FIGS. 1(a), (b), and (c) are plan views of one example of the eggplant of the present invention, and its A-AS! 2 is an explanatory diagram of an example of the use of the embodiment shown in FIG.
Figures (a), (b), and (c) are a plan view of another embodiment, a sectional view and a bottom view along line B-B, and Figure 4 (
a). (b) is a longitudinal sectional view and a bottom view of yet another embodiment (the plan view is the same as FIG. 3(a)). 1... Upper magnetic pole member, 2... Lower magnetic pole member, 3...
- Frame, 4... Fixed permanent magnet, 5... Permanent magnet for polarity conversion, 6... Coil, 7... Polarizing material. Applicant's agent Sato - Male procedural amendment September 1986/Δ date
Claims (1)
固定用永久磁石の磁極を対向させると共に、前記磁極部
材の他の端面に対し変換用永久磁石の一磁極を対向させ
てこの変換用永久磁石の他の磁極を他方の磁極部材に対
向させ、前記一方および他方の各磁極部材の各々をワー
クおよび機械テーブル用の磁極とし、前記変換用永久磁
石の発生磁束の向きおよび必要に応じ大きさを励磁によ
り調整して前記固定永久磁石の発生磁束通路を変更し、
前記ワークおよび機械テーブルとの吸着または解放を行
うようにした電磁制御型永久磁石チャック。 ２、特許請求の範囲第１項記載のチャックにおいて、 前記他の磁極部材の周面には前記固定永久磁石とは別の
固定永久磁石の磁極を対向させるようにした電磁制御型
永久磁石チャック。 ３、特許請求の範囲第２項記載のチャックにおいて、 前記変換磁石を第１の方向に磁化したときは前記各固定
永久磁石は各々別の磁路を形成し、また第２の方向に磁
化したときは前記両固定永久磁石は前記変換磁石を介し
て同一の磁路を形成するようにした電磁制御型永久磁石
チャック。 ４、特許請求の範囲第２項記載のチャックにおいて、 前記変換磁石の磁化方向に応じて変換磁石およびワーク
または機械テーブルの一方を含んだ磁路を形成するよう
にした電磁制御型永久磁石チャック。[Claims] 1. The magnetic pole of the fixed permanent magnet is opposed to the circumferential surface of one magnetic pole member whose one end surface is a magnetically active surface, and one of the permanent magnets for conversion is opposed to the other end surface of the magnetic pole member. The magnetic poles are made to face each other, and the other magnetic pole of this permanent magnet for conversion is made to face the other magnetic pole member, and each of the one and the other magnetic pole members is used as a magnetic pole for a workpiece and a machine table, and the generation of the permanent magnet for conversion is performed. changing the generated magnetic flux path of the fixed permanent magnet by adjusting the direction and, if necessary, the magnitude of the magnetic flux by excitation;
An electromagnetically controlled permanent magnet chuck that attracts or releases the workpiece and the machine table. 2. The electromagnetically controlled permanent magnet chuck according to claim 1, wherein a magnetic pole of a fixed permanent magnet other than the fixed permanent magnet is opposed to the circumferential surface of the other magnetic pole member. 3. In the chuck according to claim 2, when the converting magnet is magnetized in the first direction, each of the fixed permanent magnets forms a separate magnetic path, and when the converting magnet is magnetized in the second direction. In the electromagnetically controlled permanent magnet chuck, both fixed permanent magnets form the same magnetic path via the conversion magnet. 4. The electromagnetically controlled permanent magnet chuck according to claim 2, wherein a magnetic path including the converting magnet and either the workpiece or the machine table is formed depending on the magnetization direction of the converting magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17119286A JPS6328537A (en) | 1986-07-21 | 1986-07-21 | Electromagnetic control type permanent magnet chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17119286A JPS6328537A (en) | 1986-07-21 | 1986-07-21 | Electromagnetic control type permanent magnet chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6328537A true JPS6328537A (en) | 1988-02-06 |
Family
ID=15918715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17119286A Pending JPS6328537A (en) | 1986-07-21 | 1986-07-21 | Electromagnetic control type permanent magnet chuck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6328537A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996218A (en) * | 1994-07-18 | 1999-12-07 | Applied Materials Inc. | Method of forming an electrostatic chuck suitable for magnetic flux processing |
| JP2009534209A (en) * | 2006-04-24 | 2009-09-24 | ヨング リー | Magnetic chuck |
| JP2011519734A (en) * | 2008-04-22 | 2011-07-14 | テクノマグネーテ ソチエタ ペル アツィオーニ | Self-tightening magnetic device and control unit for controlling the magnetic device |
| JP2011519733A (en) * | 2008-04-22 | 2011-07-14 | テクノマグネーテ ソチエタ ペル アツィオーニ | Integrated magnetic device and method of manufacturing the integrated magnetic device |
| JP2017174914A (en) * | 2016-03-23 | 2017-09-28 | 株式会社豊田中央研究所 | Electromagnetic actuator |
| KR20190132377A (en) * | 2017-03-28 | 2019-11-27 | 테크노마그네테 에스.피.에이. | Advanced magnetic device |
| KR20200103412A (en) * | 2019-02-25 | 2020-09-02 | 한국기계연구원 | Work holder having electro-permanent magnetic type and work holder assembly having the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843215A (en) * | 1981-09-04 | 1983-03-12 | フセソユ−ズヌイ・ナウチノ−イスレドワ−チエルスキ−・ゴルノメタルルギ−チエスキ−・インスチツ−ト・ツベトヌイフ・メタロフ | Filter element of bag filter |
-
1986
- 1986-07-21 JP JP17119286A patent/JPS6328537A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843215A (en) * | 1981-09-04 | 1983-03-12 | フセソユ−ズヌイ・ナウチノ−イスレドワ−チエルスキ−・ゴルノメタルルギ−チエスキ−・インスチツ−ト・ツベトヌイフ・メタロフ | Filter element of bag filter |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996218A (en) * | 1994-07-18 | 1999-12-07 | Applied Materials Inc. | Method of forming an electrostatic chuck suitable for magnetic flux processing |
| JP2009534209A (en) * | 2006-04-24 | 2009-09-24 | ヨング リー | Magnetic chuck |
| JP2011519734A (en) * | 2008-04-22 | 2011-07-14 | テクノマグネーテ ソチエタ ペル アツィオーニ | Self-tightening magnetic device and control unit for controlling the magnetic device |
| JP2011519733A (en) * | 2008-04-22 | 2011-07-14 | テクノマグネーテ ソチエタ ペル アツィオーニ | Integrated magnetic device and method of manufacturing the integrated magnetic device |
| KR101482618B1 (en) * | 2008-04-22 | 2015-01-14 | 테크노마그네트 쏘시에떼 퍼 아찌오니 | Monolithic magnetic apparatus and process for making said monolithic magnetic apparatus |
| JP2017174914A (en) * | 2016-03-23 | 2017-09-28 | 株式会社豊田中央研究所 | Electromagnetic actuator |
| KR20190132377A (en) * | 2017-03-28 | 2019-11-27 | 테크노마그네테 에스.피.에이. | Advanced magnetic device |
| JP2020516074A (en) * | 2017-03-28 | 2020-05-28 | テクノマグネーテ ソチエタ ペル アツィオーニＴＥＣＮＯＭＡＧＮＥＴＥ Ｓ．ｐ．Ａ． | Improved magnetic device |
| KR20200103412A (en) * | 2019-02-25 | 2020-09-02 | 한국기계연구원 | Work holder having electro-permanent magnetic type and work holder assembly having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4956625A (en) | Magnetic gripping apparatus having circuit for eliminating residual flux | |
| KR20110002487A (en) | Self-anchoring magnetic apparatus and control unit for controlling said magnetic apparatus | |
| GB1520758A (en) | Magnetic anchoring apparatus | |
| JPH0479778B2 (en) | ||
| JPS6328537A (en) | Electromagnetic control type permanent magnet chuck | |
| JPH0794321A (en) | Magnetic chuck | |
| JPH0453646A (en) | Magnetic chuck | |
| JPS6237912A (en) | Magnetic fixture | |
| JPH08316025A (en) | Magnet type attracting apparatus | |
| JPS60144914A (en) | Magnetic attracting apparatus | |
| JPH0777701B2 (en) | Magnetic chuck | |
| JP2822706B2 (en) | Mask for processing thin film and method for holding the mask | |
| JP3035864B2 (en) | Magnetic adsorption device | |
| JPS642415Y2 (en) | ||
| JP3035863B2 (en) | Magnetic fixing device | |
| JPH02261791A (en) | Magnetic adsorptive holding device | |
| JPS6240741Y2 (en) | ||
| JPS6449207A (en) | Self-holding type magnet | |
| JPS5851044A (en) | Magnetic chuck | |
| JPS55152072A (en) | Magnetic circuit construction for printing head of wire dot printer | |
| JPS642413Y2 (en) | ||
| JPS6042046Y2 (en) | Permanent magnetic chuck | |
| JPS62208844A (en) | Excitation of magnetic chuck | |
| JPH0435343Y2 (en) | ||
| SU1449298A1 (en) | Arrangement for securing steel sheet parts in prewelding assembly |