JPH01171737A - Permanent magnet chuck - Google Patents
Permanent magnet chuckInfo
- Publication number
- JPH01171737A JPH01171737A JP32825587A JP32825587A JPH01171737A JP H01171737 A JPH01171737 A JP H01171737A JP 32825587 A JP32825587 A JP 32825587A JP 32825587 A JP32825587 A JP 32825587A JP H01171737 A JPH01171737 A JP H01171737A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- permanent magnet
- faces
- adsorbing
- frame
- 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
- 239000000696 magnetic material Substances 0.000 claims description 5
- 239000006148 magnetic separator Substances 0.000 abstract description 11
- 239000012141 concentrate Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は工作機械等において被加工物を固定するために
使用する永久磁石チャックに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a permanent magnet chuck used for fixing a workpiece in a machine tool or the like.
最近、磁気的に吸着しにくい非磁性に近い材料を吸着す
る永久磁石チャックが使用されている。Recently, permanent magnet chucks have been used that attract nearly non-magnetic materials that are difficult to attract magnetically.
この永久磁石チャックは比較的小さい被保持物を固定す
るために使用され、被保持物に対して保磁力を作用させ
たり、作用させなかったりする切替機能のないものであ
る。この永久磁石チャックの例としては第６図および第
７図に示すようなものがある。第６図に示す永久磁石チ
ャック１は箱形の磁性フレーム２内に永久磁石３が配さ
れたものであり、この永久磁石３が非磁性材料としての
磁気セパレータ４により仕切られたものである。この吸
着面５は永久磁石３のＮ極側とＳ極側とが交互に配され
た異極配列となっている。第７図に示す永久磁石チャッ
ク１は箱状に仕切られた磁性フレーム２内に永久磁石３
が磁気セパレータ４に囲まれた状態に配されたものであ
る。この吸着面５は永久磁石３のＮ極側が配された同極
配列となっている。This permanent magnet chuck is used to fix a relatively small object, and does not have a switching function for applying or not applying a coercive force to the object. Examples of this permanent magnet chuck include those shown in FIGS. 6 and 7. A permanent magnet chuck 1 shown in FIG. 6 has permanent magnets 3 arranged within a box-shaped magnetic frame 2, and the permanent magnets 3 are partitioned by magnetic separators 4 made of non-magnetic material. This attracting surface 5 has a different polarity arrangement in which the N-pole side and the S-pole side of the permanent magnet 3 are alternately arranged. The permanent magnet chuck 1 shown in FIG. 7 has a permanent magnet 3 inside a magnetic frame 2 partitioned into a box shape.
are arranged surrounded by a magnetic separator 4. This attracting surface 5 has a homopolar arrangement in which the N pole side of the permanent magnet 3 is arranged.
しかしながら上記のような従来の永久磁石チャックは永
久磁石を磁気セパレータで仕切ることにより磁気漏洩を
できるだけ少なくする構造にしているが、吸着面に永久
磁石が表われ、吸着面の加工を困難にしているという欠
点がある。又吸着面に永久磁石が現れ、吸着面の加工を
困難にしているという欠点がある。また、非磁性に近い
材料を吸着するには保磁力を大きくする必要があり、こ
のための磁気漏洩の対策としても不十分である。However, although the conventional permanent magnet chucks mentioned above have a structure that minimizes magnetic leakage by separating the permanent magnets with magnetic separators, the permanent magnets appear on the suction surface, making it difficult to process the suction surface. There is a drawback. Another drawback is that permanent magnets appear on the suction surface, making machining of the suction surface difficult. Furthermore, in order to attract nearly non-magnetic materials, it is necessary to increase the coercive force, which is not sufficient as a countermeasure against magnetic leakage.
本発明は上記問題点を解決するためになされたものであ
り、吸着面の加工性に富み、磁気漏洩を無くし、被保持
物に対して保磁力を集中させることができる永久磁石チ
ャックを提供することを目的とする。The present invention has been made in order to solve the above-mentioned problems, and provides a permanent magnet chuck that has a highly workable attracting surface, eliminates magnetic leakage, and can concentrate coercive force on an object to be held. The purpose is to
上記目的を達成するために本発明は、箱形のフレーム内
に磁極を配置し、この磁極のうち被保持物を吸着する吸
着面以外の面を永久磁石により囲んだものである。In order to achieve the above object, the present invention arranges a magnetic pole in a box-shaped frame, and surrounds the surface of the magnetic pole other than the attracting surface that attracts the object with a permanent magnet.
上記のような構成の永久磁石チャックは磁極が吸着面を
除き永久磁石により囲まれているので吸着面からの磁力
線は被保持物だけに向かい、磁気漏洩がない。In the permanent magnet chuck configured as described above, the magnetic poles are surrounded by permanent magnets except for the attracting surface, so the lines of magnetic force from the attracting surface are directed only toward the object to be held, and there is no magnetic leakage.
以下に本発明の永久磁石チャックを図面に基づいて説明
する。第１図は本発明の永久磁石チャック１を示す一実
施例であり、永久磁石チャック１の断面を示している。The permanent magnet chuck of the present invention will be explained below based on the drawings. FIG. 1 shows an embodiment of a permanent magnet chuck 1 according to the present invention, and shows a cross section of the permanent magnet chuck 1. As shown in FIG.
この永久磁石チャック１は第６図および第７図に基づい
て従来の技術の項ですでに説明したものと同じ構成を有
するのでこの箇所には同じ符号を付し、詳細な説明は省
略する。Since this permanent magnet chuck 1 has the same structure as that already explained in the section of the prior art based on FIGS. 6 and 7, the same reference numerals are given to these parts and detailed explanation will be omitted.
永久磁石チャック１の磁性フレーム２は底部６を有する
箱形である。磁性フレーム２内に所定間隔をおいて配さ
れる複数の磁極７は第２図にも示すように直方体である
。それぞれの磁極７は磁極７の底面積と等しい面積を有
する直方体の永久磁石３の上に置かれている。永久磁石
３の上に置かれた磁極７の吸着面５は磁性フレーム２の
周端面と水平に形成されている。上記したそれぞれの永
久磁石３の間隙、および、磁性フレーム２の内壁と永久
磁石３との間隙には永久磁石３と等しい厚みの磁気セパ
レータ４がはめ込まれている。この磁気セパレータ４の
上面で、かつ、それぞれの磁極７が互いに対向する間隙
、および、それぞれの磁極７と磁性フレーム２の内壁と
対向する間隙にはそれぞれの磁極７に対向した永久磁石
３がはめ込まれている。これらの永久磁石３の高さは磁
極７の吸着面よりも幾分低い段差面８を形成している。The magnetic frame 2 of the permanent magnet chuck 1 is box-shaped with a bottom 6. The plurality of magnetic poles 7 arranged at predetermined intervals within the magnetic frame 2 are rectangular parallelepipeds, as also shown in FIG. Each magnetic pole 7 is placed on a rectangular parallelepiped permanent magnet 3 having an area equal to the bottom area of the magnetic pole 7. The attraction surface 5 of the magnetic pole 7 placed on the permanent magnet 3 is formed parallel to the peripheral end surface of the magnetic frame 2. A magnetic separator 4 having the same thickness as the permanent magnet 3 is fitted into the gap between each of the permanent magnets 3 described above and the gap between the inner wall of the magnetic frame 2 and the permanent magnet 3. Permanent magnets 3 facing each magnetic pole 7 are fitted on the upper surface of the magnetic separator 4 in the gap where each magnetic pole 7 faces each other, and in the gap between each magnetic pole 7 and the inner wall of the magnetic frame 2. It is. The height of these permanent magnets 3 forms a step surface 8 which is somewhat lower than the attraction surface of the magnetic pole 7.
この段差面８および磁性フレーム２の四隅には磁極７の
吸着面５と一致する面を形成するように磁気セパレータ
４がはめ込まれている。A magnetic separator 4 is fitted into the stepped surface 8 and the four corners of the magnetic frame 2 so as to form a surface that coincides with the attracting surface 5 of the magnetic pole 7 .
なお、永久磁石３は保磁力の高いフェライト磁石や希土
類磁石が使用される。Note that the permanent magnet 3 is a ferrite magnet or rare earth magnet with high coercive force.
第３図は永久磁石チャック１の他の例を示しており、こ
の例では正立方体の磁極７が使用されている。FIG. 3 shows another example of the permanent magnet chuck 1, in which a regular cubic magnetic pole 7 is used.
第４図は永久磁石チャック１の他の例を示しており、こ
の例では磁極７が円筒形のものである。FIG. 4 shows another example of the permanent magnet chuck 1, in which the magnetic pole 7 is cylindrical.
この場合の（永久磁石は必ずしも円筒形に合せたもので
なくてもよい）磁気セパレータ４は円筒形の磁ｔ！１ｉ
Ｉ７に適合した形に製作される。In this case, the magnetic separator 4 (the permanent magnet does not necessarily have to be cylindrical) is a cylindrical magnet t! 1i
Manufactured to fit I7.
第５図は第２図、第３図および第４図に示す磁極７の下
面に接する永久磁石３が隣合った磁極７の下面まで矢印
の方向に移動する状態を示している。この移動により磁
極７の吸着面５は側面の永久磁石３との極性関係で強め
られたり弱められたり出来る切替機能を持つ。FIG. 5 shows a state in which the permanent magnet 3 in contact with the lower surface of the magnetic pole 7 shown in FIGS. 2, 3, and 4 moves in the direction of the arrow to the lower surface of the adjacent magnetic pole 7. Due to this movement, the attraction surface 5 of the magnetic pole 7 has a switching function that allows it to be strengthened or weakened depending on the polarity relationship with the permanent magnet 3 on the side surface.
上記のような構成の永久磁石チャック１では第１図ない
し第４図に示すようにＮ極からＳ極に向かう磁力線が磁
極７の吸着面５を除くそれぞれの面を取囲むことになり
、吸着面５から発生する磁力線以外の磁気漏洩はなくな
る。In the permanent magnet chuck 1 configured as described above, as shown in FIGS. 1 to 4, the lines of magnetic force from the N pole to the S pole surround each surface of the magnetic pole 7 except for the attraction surface 5, and the attraction There is no magnetic leakage other than lines of magnetic force generated from the surface 5.
以上述べたことから本発明の永久磁石チャックは磁極の
吸着面を除く他の面を永久磁石により囲む構成にしたの
で永久磁石の磁力線は磁極を取囲むことになり、吸着面
を除く他の面からの磁気漏洩を無くすことができ吸着面
への磁気の集中が計られる。この結果、磁極の吸着面か
らの磁力線は被保持物だけに向けて作用するので被保持
物を保持するための保磁力を大きくすることができる。From the above, the permanent magnet chuck of the present invention has a structure in which the other surfaces of the magnetic pole except the attracting surface are surrounded by permanent magnets, so the magnetic force lines of the permanent magnet surround the magnetic pole, and the other surfaces except the attracting surface are surrounded by permanent magnets. Magnetic leakage from the magnetic field can be eliminated, and the magnetic field can be concentrated on the attracting surface. As a result, the lines of magnetic force from the attracting surface of the magnetic pole act only on the object to be held, so that the coercive force for holding the object can be increased.
第１図は本発明の永久磁石チャックの一実施例を示す断
面図、第２図は第１図に矢印Ａ−Ａにより示す平面図、
第３図は本発明の永久磁石チャックの他の例を示す平面
図、第４図は本発明の永久磁石チャックの他の例を示す
平面図、第５図は磁極と磁性フレームとの間の永久磁石
を矢印の方向に移動する例を示す断面図、第６図および
第７図は従来の永久磁石チャックを示す断面図である。
１・・・永久磁石チャック、２・・・フレーム（磁性フ
レーム）、３・・・永久磁石、４・・・非磁性体（磁気
セパレータ）、５・・・吸着面、７・・・磁極。
出願人代理人 佐 藤 −雄FIG. 1 is a sectional view showing an embodiment of the permanent magnet chuck of the present invention, FIG. 2 is a plan view shown by arrow A-A in FIG. 1,
FIG. 3 is a plan view showing another example of the permanent magnet chuck of the present invention, FIG. 4 is a plan view showing another example of the permanent magnet chuck of the present invention, and FIG. 5 is a plan view showing another example of the permanent magnet chuck of the present invention. A sectional view showing an example of moving a permanent magnet in the direction of the arrow, and FIGS. 6 and 7 are sectional views showing a conventional permanent magnet chuck. DESCRIPTION OF SYMBOLS 1... Permanent magnet chuck, 2... Frame (magnetic frame), 3... Permanent magnet, 4... Non-magnetic material (magnetic separator), 5... Attraction surface, 7... Magnetic pole. Applicant's agent Mr. Sato
Claims (1)
被保持物を吸着する吸着面以外の面を永久磁石により囲
んだことを特徴とする永久磁石チャック。 ２、フレーム内に配された磁極および永久磁石以外の空
間に非磁性体を形成したことを特徴とする特許請求の範
囲第１項に記載の永久磁石チャック。 ３、磁極は一側が吸着面を有する円筒形であることを特
徴とする特許請求の範囲第１項に記載の永久磁石チャッ
ク。 ４、フレームの底部と磁極との間に配された永久磁石は
隣合った他の磁極に移動可能に形成されたことを特徴と
する特許請求の範囲第１項に記載の永久磁石チャック。[Claims] 1. A permanent magnet chuck, characterized in that a magnetic pole is arranged in a box-shaped frame, and the surface of the magnetic pole other than the attracting surface that attracts the object to be held is surrounded by permanent magnets. 2. The permanent magnet chuck according to claim 1, wherein a non-magnetic material is formed in a space other than the magnetic poles and permanent magnets arranged in the frame. 3. The permanent magnet chuck according to claim 1, wherein the magnetic pole has a cylindrical shape with an attraction surface on one side. 4. The permanent magnet chuck according to claim 1, wherein the permanent magnet disposed between the bottom of the frame and the magnetic pole is movable to another adjacent magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32825587A JPH01171737A (en) | 1987-12-24 | 1987-12-24 | Permanent magnet chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32825587A JPH01171737A (en) | 1987-12-24 | 1987-12-24 | Permanent magnet chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01171737A true JPH01171737A (en) | 1989-07-06 |
Family
ID=18208175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32825587A Pending JPH01171737A (en) | 1987-12-24 | 1987-12-24 | Permanent magnet chuck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01171737A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5831389A (en) * | 1995-01-20 | 1998-11-03 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method and apparatus for controlling an automotive room lamp |
| KR100397270B1 (en) * | 1996-05-14 | 2003-11-28 | 이용구 | Magnet chuck |
| JP2006272482A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Brittle material machining tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018272U (en) * | 1984-06-06 | 1985-02-07 | 自動車機器技術研究組合 | Ignition system for internal combustion engines |
| JPS6048233A (en) * | 1983-08-25 | 1985-03-15 | Kanetsuu Kogyo Kk | Selectable permanent magnetic chuck |
-
1987
- 1987-12-24 JP JP32825587A patent/JPH01171737A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6048233A (en) * | 1983-08-25 | 1985-03-15 | Kanetsuu Kogyo Kk | Selectable permanent magnetic chuck |
| JPS6018272U (en) * | 1984-06-06 | 1985-02-07 | 自動車機器技術研究組合 | Ignition system for internal combustion engines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5831389A (en) * | 1995-01-20 | 1998-11-03 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method and apparatus for controlling an automotive room lamp |
| KR100397270B1 (en) * | 1996-05-14 | 2003-11-28 | 이용구 | Magnet chuck |
| JP2006272482A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Brittle material machining tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5959237U (en) | Switchable permanent magnetic chuck | |
| CA2453110A1 (en) | System for the separation of magnetically attractable particles | |
| KR100626889B1 (en) | Magnetic pallet for anchorage of ferromagnetic parts for machining by machine tools with horizontal tool axis and a method of production or formation of the same | |
| KR900008082B1 (en) | Operating apparatus for objective lens | |
| US4708350A (en) | Magnetic liquid seal with magnetized deformable magnet | |
| JPH01171737A (en) | Permanent magnet chuck | |
| JPS6212106A (en) | Magnetic holder plate | |
| JPS6373861A (en) | Manufacture of magnet circuit | |
| JPS6237912A (en) | Magnetic fixture | |
| JP3069505U (en) | Blocks with magnets for teaching materials | |
| JPS63312037A (en) | Permanent magnet holder | |
| JPH0329079Y2 (en) | ||
| JP2008034796A (en) | Positioning structure, and guide structure | |
| JPH021623B2 (en) | ||
| RU1798106C (en) | Magnetic plate | |
| JPH0314017Y2 (en) | ||
| JPS6323546A (en) | Stator for dc motor | |
| JPS6240742Y2 (en) | ||
| UA47598A (en) | Separator magnetic system | |
| JPH0191652A (en) | Field structure of linear dc brushless motor | |
| SU470151A1 (en) | Device for placing workpieces in holder | |
| JP2004256250A (en) | Lifter magnet | |
| JPS59196144A (en) | Magnet chuck | |
| RU1816635C (en) | Magnetic plate | |
| JPS57137738A (en) | Vibration-damping device for column |