[go: up one dir, main page]

WO2011107968A1 - Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide - Google Patents

Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide Download PDF

Info

Publication number
WO2011107968A1
WO2011107968A1 PCT/IB2011/050929 IB2011050929W WO2011107968A1 WO 2011107968 A1 WO2011107968 A1 WO 2011107968A1 IB 2011050929 W IB2011050929 W IB 2011050929W WO 2011107968 A1 WO2011107968 A1 WO 2011107968A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
magnetic
vacuum
vacuum clamping
clamping plate
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.)
Ceased
Application number
PCT/IB2011/050929
Other languages
English (en)
Other versions
WO2011107968A4 (fr
Inventor
Guy Petrens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iot bvba
Original Assignee
Iot bvba
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iot bvba filed Critical Iot bvba
Priority to EP11713068A priority Critical patent/EP2542378A1/fr
Publication of WO2011107968A1 publication Critical patent/WO2011107968A1/fr
Publication of WO2011107968A4 publication Critical patent/WO2011107968A4/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/002—Magnetic work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/005—Vacuum work holders

Definitions

  • the present invention concerns a device for the contactless clamping of an object, in particular a work piece that is to be processed, for example by means of milling, drilling, grinding or the like.
  • contactless clamping is meant here, as is known, that the object concerned is fixed in such a manner that it is held with only one side against a clamping surface, but that this object is free from any clamping elements from all other approach angles and thus can be easily processed over a maximum surface.
  • a device for the contactless clamping of an object is already known, which device is provided with a magnetic table.
  • Examples of such magnetic tables are described for example in KR 100708013, GB 2,350,933 and international patent application No. 2009/034425.
  • such a magnetic table comprises one or several electromagnets or electro-permanent magnets which are put under a clamping plate and which can be switched on and off by switching means provided to that end which activate or deactivate the power supply of the electromagnets, or transmit an electrical pulse to the electro-permanent magnets, as a result of which they change polarity, with magnetization or demagnetization as a result.
  • a magnetic field is generated which attracts an object made of a magnetic material or a magnetisable material, such as a ferromagnetic material, against the aforesaid clamping plate, such that this object is clamped so to say and can thus be processed, for example by means of milling.
  • a disadvantage of such magnetic tables is that they do not allow for any clamping of non-magnetic or non-magnetisable materials, such as stainless steel, plastics (PVC, PET, PP, etc.) or organic materials (wood, porcelain, etc.) and the like.
  • non-magnetic or non-magnetisable materials such as stainless steel, plastics (PVC, PET, PP, etc.) or organic materials (wood, porcelain, etc.) and the like.
  • Vacuum clamping tables are also known, for example as described in DE 202009007827, which consist for example of a plate in which a number of grooves are provided, and whereby a bore is provided in said groove opening into a terminal in the vacuum clamping table for a vacuum pump or other means which may create an underpressure, such as a venturi or the like.
  • vacuum clamping tables do not allow for any clamping of large or thick ferromagnetic materials for "heavy processing" or, in other words, for any processing requiring large forces being exerted on the object such as for example milling, since the vacuum force and consequently also the frictional resistance between the object and the vacuum clamping table is restricted, as a result of which a positional fixation cannot be guaranteed in such cases.
  • DE 3.525.584 is described a combined device for the contactless clamping of an object, which device is equipped with a magnetic table on the one hand and a vacuum clamping table to be provided on the latter on the other hand which can be clamped against said magnetic table, and whereby the vacuum clamping table is provided with a connection for attaching a vacuum pump or the like.
  • the present invention aims to provide a remedy to one or several of the above-mentioned and/or other disadvantages.
  • the invention concerns a device for the contactless clamping of an object, which device is provided with a magnetic table with a clamping plate and means for generating a magnetic field for clamping a magnetic or magnetisable object against said clamping plate, whereby said device comprises an at least partly magnetic or magnetisable vacuum clamping table which can be clamped against said clamping plate of the magnetic table by the aforesaid magnetic field, whereby said magnetic table is provided with a connection for means for creating an underpressure .
  • An advantage of the device according to the invention is that it allows for the contactless clamping of ferromagnetic materials as well as non-ferromagnetic materials as it can be very easily converted from a magnetic clamping system into a vacuum clamping system and vice versa, with a considerable reduction of the changeover time .
  • Another advantage of such a device according to the invention is that objects made of a thin material which is only magnetisable to a limited extent and onto which chips adhere due to the strong magnetic field can be clamped significantly better thanks to the vacuum than if a magnetic table were used.
  • the device according to the invention is also advantageous in that it is now possible to use an extremely simple vacuum clamping table without any inside ducts and possibly of a very low height.
  • said magnetic table is provided with a connection for means to create an underpressure such as for example a venturi system.
  • the vacuum clamping table is moreover free of conduits forming a connection with such means for creating an underpressure while in use.
  • An advantage thereof is that the vacuum clamping table can remain free of numerous and complex inside ducts, such that it can be made considerably cheaper than known vacuum clamping tables.
  • the vacuum clamping table can be built in a particularly simple manner.
  • the vacuum clamping table mainly consists of a plate, at least partly made of a magnetic or magnetisable material.
  • a plate may be relatively thin, for example with a thickness between 1 and 2 cm, or having a thickness of only 8 mm, since the general stiffness of the device is already offered by the magnetic table.
  • the invention also concerns a method for the contactless clamping of an object by means of a device comprising a magnetic table with a clamping plate and means for generating a magnetic field, whereby this method comprises the step of magnetically clamping a vacuum clamping plate against said clamping plate.
  • the invention also concerns the use of a device for the contactless clamping of an object, which device comprises a magnetic table with a clamping plate and means for generating a magnetic field, characterised in that said magnetic table is used for the contactless clamping of a vacuum clamping table which is at least partly magnetic or magnetisable .
  • figure 1 represents a magnetic table as part of a device according to the invention
  • figure 2 represents a vacuum clamping table which is part of a device according to the invention
  • figure 3 is an exploded front view of a device according to the invention.
  • figure 4 represents a variant of a vacuum clamping table that can be used in a device according to the invention.
  • Figure 1 shows a magnetic table 1 which is part of a device according to the invention for the contactless clamping of an object.
  • the aforesaid magnetic table 1 is built in a manner practically known as such and comprises a clamping plate 2 with a number of poles (N and Z) and means for generating a magnetic field which are not represented in the figure, for example in the shape of one or several electro-permanent magnets, which can be switched on and off, for example by means of a switch provided to that end but which is not represented in the figure either.
  • this magnetic table 1 is equipped with an electric terminal 3 providing a connection with a power supply source.
  • Said electric terminal 3 can for example have the shape of an electric plug, but it may also form a fixed connection for a power supply cable, for example.
  • a number of blind holes 4 are provided in the top of the clamping table 2 in which, as is known, possible pole extensions can be fixed, for example by means of a threaded connection.
  • the magnetic table 1 is further provided with a connection 5 for means for creating an underpressure, such as a vacuum pump, a venturi or the like, which connection 5 in this case comprises two almost perpendicularly connecting bores in a massive part of the magnetic table 1.
  • a first bore extends in this case as of a side of the magnetic table 1 and forms a single through duct with the second bore extending as of the top of the magnetic table 1.
  • connection 5 is provided with the magnetic table 1 on the right side, but it goes without saying that this connection 5 can also be provided elsewhere, for example on the left side or centrally.
  • This connection is preferably provided in a massive part of the magnetic table 1, in particular in a part of the magnetic table 1 which is free of magnets and/or electric coils.
  • Figure 2 represents a vacuum clamping table 6 of a device according to the invention.
  • a number of longitudinal and transversal grooves 7 which are in this case provided at equal mutual distances, thus forming a regular pattern or grid.
  • the vacuum clamping table 6 is at least partly magnetic or magnetisable.
  • the vacuum clamping table 6 is further also provided with an opening 8 extending over the entire height of the vacuum clamping table 6 in this case and thus forming a passage with a minimal length, namely as of the bottom of an aforesaid groove 7 up to the lower side of the vacuum clamping table 6.
  • Figure 3 represents an exploded front view of a device according to the invention, whereby the vacuum clamping table 6 is shown at the top whereby a part is cut at the opening 8, whereas the magnetic table 1 is shown at the bottom.
  • this object In order to clamp a magnetic or magnetisable object by means of a device according to the invention, this object must be simply placed on the magnetic table 1, after which the electromagnets or electro-permanent magnets are activated and the object concerned is drawn against the clamping plate 2 by means of the created magnetic field. Next, this object can be processed in the known manner by means of milling, grinding, boring or the like.
  • the electromagnets or electro-permanent magnets are deactivated, as a result of which the magnetic field is neutralized and the object concerned can be simply removed from the clamping plate 2.
  • the vacuum clamping table 6 is placed on the magnetic table 1.
  • the magnetic table 1 may be provided with positioning means to position the vacuum clamping table 6 on the clamping plate 2, which positioning means may be stops for example, not represented in the figures, which are fixed to the side of the magnetic table, for example by means of screws.
  • the vacuum clamping table 6 may be provided with positioning means to position the vacuum clamping table 6 on the clamping plate 2. These means may consist for example of tapped holes in which may be provided a stop .
  • such a stop particularly consists of a threaded rod with an eccentrically provided stud on it
  • the latter can be used to position the vacuum clamping table 6 on the clamping plate 2, in particular when the stud is directed downward, as well as to position the object to be processed on the vacuum clamping table 6, in particular after the eccentrically provided stud has been rotated, such that it reaches above the surface of the vacuum clamping table 6.
  • the electromagnets or electro-permanent magnets are activated, as a result of which the vacuum clamping table 6 is clamped against the clamping plate 2, since this vacuum clamping table 6 is at least partly magnetic or magnetisable .
  • the opening 8 in the vacuum clamping table 6, when the vacuum clamping table 6 is clamped on the clamping plate 2 is connected to said connection 5 for means for creating an underpressure.
  • said opening 8, when the vacuum clamping table is in a clamped condition is connected directly to the duct of the connection 5.
  • the device 1 preferably comprises a seal 9 which, while in use, is provided between the vacuum clamping table 6 and the clamping plate 2 of the magnetic table 1 round said opening 8 and round the opposite far end of the duct of the connection 5.
  • a recess may possibly be provided in the bottom wall of the vacuum clamping table 6 and/or in the upper surface of the magnetic table 1, concentrically or almost concentrically round said opening 8 and/or round the aforesaid far end of the duct of the connection 5, in which recess said seal 9 can be placed, although this is not strictly necessary according to the invention.
  • a sealing cord is provided in the known manner in said grooves 7 according to a specific pattern, depending on the shape and dimensions of the object to be clamped, after which the object to be clamped is placed on the vacuum clamping table 6.
  • the means for creating an underpressure are activated, which means create an underpressure in the sealed space between the object to be clamped, the vacuum clamping table 6 and the sealing cord, via the opening 8, which of course must at all times be situated within the perimeter confined by the sealing cord.
  • the object is clamped against the vacuum clamping table in order to be processed.
  • one only has to eliminate the underpressure by deactivating said means and by connecting said confined space to the atmosphere.
  • connection 5 for means for creating an underpressure is provided on the magnetic table
  • the vacuum clamping table 6 is very easy to realise and must not be provided with complex inside ducts; while in use, it will always be free of conduits forming a connection with the means for creating an underpressure. From what precedes it is clear that the device according to the invention can be very easily and quickly transformed from a vacuum clamping system into a magnetic clamping system and vice versa. Consequently, there is no need for two separate installations, as a result of which considerable costs can be saved.
  • Figure 4 represents another embodiment of a vacuum clamping table 6 which can be used in a device according to the invention .
  • the vacuum clamping table 6 is not provided with a large number of grooves as in the embodiment from figure 2, and it is provided in particular with an upward directed surface which is mainly flat when in use.
  • the vacuum clamping table 6 is used in combination with a mat 10 provided with a number of circular ribs 11 on top which each comprise a disc-shaped mat part in which is provided an opening 12.
  • said mat 10 is provided with a number of slots which are such that they form a duct system as of a common point, which duct system is such that every aforesaid opening 12 is connected to this point via said slots .
  • the means for creating an underpressure are activated, as a result of which a vacuum is created via the connection 5 and the opening 5 in every space which is surrounded by an aforesaid rib 11, so that a series of suction cups are formed by the mat 10 as it were.
  • this vacuum clamping table 6 as used in the last described application in combination with the mat 10, whereby the surface of this vacuum clamping table 6 is not provided with the many grooves as in the embodiment from figure 2, and the vacuum clamping table 6 as represented in figure 2 and the accompanying applications may concern one and the same element.
  • the two main faces of a vacuum clamping table 6 may be realised in such a way that they can be used for both applications by simply turning them, at least if one of the main faces is provided with grooves 7 as discussed, whereas the opposite face is mainly flat.
  • a major advantage which is thus obtained, apart from the cost saving as two functions are combined in a single element, consists in that when such a vacuum clamping table 6 is used in combination with the mat 10, certain zones can be deliberately excluded from the vacuum circuit by simply providing one or several O-rings in the grooves 7. In this application, this grooved side is provided at the bottom, i.e. in contact with the clamping table 2.
  • the invention it is possible to provide positioning holes in the vacuum clamping table which make it possible to correctly position an object to be clamped and/or an above-mentioned mat 10 on the vacuum clamping table .
  • positioning holes are provided on the side of the vacuum clamping table 6 which is provided with grooves 7, either or not in the shape of a grid, they may be provided with internal thread to fix clamping means and/or stops.
  • positioning holes are provided on the side of the vacuum clamping table 6 which is mainly flat, they can be made without internal thread or as chambers.
  • the latter positioning holes or chambers can for example be used to anchor protruding parts, for example bumps, on the bottom side of the mat 10, such that one can easily obtain that the central point which is connected to the respective suction caps via the slots always connects to the opening 8 in the vacuum clamping table 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

L'invention concerne un dispositif de serrage sans contact d'un objet, dispositif qui comporte une table magnétique (1) avec une plaque de serrage (2) et un moyen permettant de générer un champ magnétique pour serrer un objet magnétique ou magnétisable contre ladite plaque de serrage (2), ledit dispositif comportant une table de serrage à vide au moins partiellement magnétique ou magnétisable (6) pouvant être serrée contre ladite plaque de serrage (2) de la table magnétique (1) par le champ magnétique mentionné ci-dessus, caractérisé en ce que ladite table magnétique (1) comporte un dispositif de raccordement (5) pour des moyens en vue de créer une sous-pression.
PCT/IB2011/050929 2010-03-04 2011-03-04 Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide Ceased WO2011107968A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11713068A EP2542378A1 (fr) 2010-03-04 2011-03-04 Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BEBE2010/0139 2010-03-04
BE2010/0139A BE1019212A5 (nl) 2010-03-04 2010-03-04 Inrichting voor het contactloos klemmen van een voorwerp.

Publications (2)

Publication Number Publication Date
WO2011107968A1 true WO2011107968A1 (fr) 2011-09-09
WO2011107968A4 WO2011107968A4 (fr) 2011-11-17

Family

ID=43032557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/050929 Ceased WO2011107968A1 (fr) 2010-03-04 2011-03-04 Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide

Country Status (3)

Country Link
EP (1) EP2542378A1 (fr)
BE (1) BE1019212A5 (fr)
WO (1) WO2011107968A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103128683A (zh) * 2012-11-30 2013-06-05 青岛力磁电气有限公司 一种非磁力片材的装夹方式和夹具
CN105080804A (zh) * 2015-09-29 2015-11-25 梧州恒声电子科技有限公司 一种喇叭磁路组件注胶夹具
JP2017144525A (ja) * 2016-02-18 2017-08-24 株式会社ナベヤ 磁気吸着装置
JP2018069426A (ja) * 2016-11-04 2018-05-10 カネテック株式会社 マグネットチャック
CN108673388A (zh) * 2018-07-27 2018-10-19 航天南洋（浙江）科技有限公司 壳体类零件真空吸附夹具
CN109605072A (zh) * 2018-12-12 2019-04-12 成都飞机工业（集团）有限责任公司 一种基于磁力基座的移动组合工装及其使用方法
CN113600884A (zh) * 2021-09-01 2021-11-05 安徽金元素复合材料有限公司 一种金属复合板表面铣削装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962700B (zh) * 2012-11-27 2015-01-07 北京航空航天大学 一种用于薄板铣削夹持固定的真空吸附系统及其使用方法
CN111098243A (zh) * 2019-11-26 2020-05-05 深圳市华星光电半导体显示技术有限公司 柔性面板吸附装置
CN115042044B (zh) * 2022-05-25 2023-11-24 涡阳县高炉创新包装有限责任公司 一种玻璃生产用玻璃侧边打磨装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525584C1 (de) 1985-01-31 1986-06-12 Modellbau Paul Apitz, 7913 Senden Spannvorrichtung für Werkstücke an einer Werkzeugmaschine
DE8502555U1 (de) * 1985-01-31 1987-02-19 Modellbau Paul Apitz, 7913 Senden Spannvorrichtung für Werkstücke an einer Werkzeugmaschine
GB2350933A (en) 1999-06-10 2000-12-13 Magnetic Systems Ltd Magnetic chuck for ferrous or non-ferrous materials
KR100708013B1 (ko) 2006-04-24 2007-04-16 이용구 마그네틱 척
WO2009034425A2 (fr) 2007-09-14 2009-03-19 Tecnomagnete S.P.A. Plaque multipolaire monobloc pour appareil de retenue magnétique, procédé de fabrication d'une telle plaque et appareil magnétique utilisant une telle plaque
DE202009007827U1 (de) 2009-06-03 2009-08-20 Horst Witte Gerätebau Barskamp KG Vakuumspannplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525584C1 (de) 1985-01-31 1986-06-12 Modellbau Paul Apitz, 7913 Senden Spannvorrichtung für Werkstücke an einer Werkzeugmaschine
DE8502555U1 (de) * 1985-01-31 1987-02-19 Modellbau Paul Apitz, 7913 Senden Spannvorrichtung für Werkstücke an einer Werkzeugmaschine
GB2350933A (en) 1999-06-10 2000-12-13 Magnetic Systems Ltd Magnetic chuck for ferrous or non-ferrous materials
KR100708013B1 (ko) 2006-04-24 2007-04-16 이용구 마그네틱 척
WO2009034425A2 (fr) 2007-09-14 2009-03-19 Tecnomagnete S.P.A. Plaque multipolaire monobloc pour appareil de retenue magnétique, procédé de fabrication d'une telle plaque et appareil magnétique utilisant une telle plaque
DE202009007827U1 (de) 2009-06-03 2009-08-20 Horst Witte Gerätebau Barskamp KG Vakuumspannplatte

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103128683A (zh) * 2012-11-30 2013-06-05 青岛力磁电气有限公司 一种非磁力片材的装夹方式和夹具
CN105080804A (zh) * 2015-09-29 2015-11-25 梧州恒声电子科技有限公司 一种喇叭磁路组件注胶夹具
JP2017144525A (ja) * 2016-02-18 2017-08-24 株式会社ナベヤ 磁気吸着装置
JP2018069426A (ja) * 2016-11-04 2018-05-10 カネテック株式会社 マグネットチャック
CN108673388A (zh) * 2018-07-27 2018-10-19 航天南洋（浙江）科技有限公司 壳体类零件真空吸附夹具
CN109605072A (zh) * 2018-12-12 2019-04-12 成都飞机工业（集团）有限责任公司 一种基于磁力基座的移动组合工装及其使用方法
CN109605072B (zh) * 2018-12-12 2021-01-05 成都飞机工业（集团）有限责任公司 一种基于磁力基座的移动组合工装及其使用方法
CN113600884A (zh) * 2021-09-01 2021-11-05 安徽金元素复合材料有限公司 一种金属复合板表面铣削装置
CN113600884B (zh) * 2021-09-01 2022-04-22 安徽金元素复合材料有限公司 一种金属复合板表面铣削装置

Also Published As

Publication number Publication date
BE1019212A5 (nl) 2012-04-03
EP2542378A1 (fr) 2013-01-09
WO2011107968A4 (fr) 2011-11-17

Similar Documents

Publication Publication Date Title
EP2542378A1 (fr) Dispositif de serrage sans contact d'un objet, lequel dispositif comporte une table magnétique et une table de serrage à vide
US12466015B2 (en) Magnetic coupling device
US20230170122A1 (en) Electromagnet-switchable permanent magnet device
KR102550385B1 (ko) 센서 배치 및 자기 소거 성능 중 적어도 하나를 가지는 자기 커플링 디바이스
CN105583453B (zh) 刀柄
US20130043630A1 (en) Magnetic worktable
EP2611569B1 (fr) Système porte-pièce électromagnétique à aimants permanents présentant un ou plusieurs solénoïdes additionnels positionnés dans le ou les pôles principaux de la face de travail
CN203579285U (zh) 一种具有全磁极磁力检测及温度检测电永磁吸盘
WO2019226901A1 (fr) Étau à aimant
US12365059B2 (en) Woodworking device accessories
CN104209892A (zh) 一种磁性可开关定位装置及定位设备
US20100282040A1 (en) Clamping device for frozen material
US10833572B2 (en) Electric linear motor and testing device
JP5716232B2 (ja) 保持装置
CN206373809U (zh) 平面永磁吸盘
CN203696498U (zh) 磁性平口钳
CN211639144U (zh) 机床参考点定位组件及机床
US6278349B1 (en) Apparatus for magnetizing a metallic driving tool
CN203712311U (zh) 一种钻孔夹具
CN203712312U (zh) 一种螺杆钻孔夹具
CN202224965U (zh) 侧面压紧的夹具块
CN203305104U (zh) 磁性可开关定位装置及定位设备
FR2893494B1 (fr) Organe de prehension de couvercle aimante
KR101788987B1 (ko) 에지부를 포함한 관통가공용 피가공물 고정장치
CN204565685U (zh) 一种滑块钻孔用固定夹具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11713068

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2011713068

Country of ref document: EP