WO2010128527A2 - Système de soutien d'ouvrage magnétique électro-permanent comportant la conversion d'un pôle magnétique ayant une configuration carrée en un pôle long ou pôle croisé ou vice versa - Google Patents

Système de soutien d'ouvrage magnétique électro-permanent comportant la conversion d'un pôle magnétique ayant une configuration carrée en un pôle long ou pôle croisé ou vice versa Download PDF

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Publication number
WO2010128527A2
WO2010128527A2 PCT/IN2010/000294 IN2010000294W WO2010128527A2 WO 2010128527 A2 WO2010128527 A2 WO 2010128527A2 IN 2010000294 W IN2010000294 W IN 2010000294W WO 2010128527 A2 WO2010128527 A2 WO 2010128527A2
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WO
WIPO (PCT)
Prior art keywords
pole
magnetic
work holding
configuration
work
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/IN2010/000294
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English (en)
Other versions
WO2010128527A3 (fr
Inventor
Uttam Sarda
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2010128527A2 publication Critical patent/WO2010128527A2/fr
Anticipated expiration legal-status Critical
Publication of WO2010128527A3 publication Critical patent/WO2010128527A3/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • B23Q3/1543—Stationary devices using electromagnets
    • 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
    • B23Q3/1546—Stationary devices using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/0226—PM with variable field strength

Definitions

  • An Electro Permanent Magnetic work holding system involving conversion of magnetic pole from Square pole to Long pole or a Cross pole configuration or vice versa.
  • the subject invention relates to an Electro Permanent Magnetic work holding system ( herein after referred . to as EPM ) involving conversion of magnetic pole from Square pole to Long pole or a Cross pole configuration or vice versa.
  • EPM Electro Permanent Magnetic work holding system
  • the change of configuration of the poles is accomplished by changing the polarity of the permanent magnets positioned below the magnetic poles. This can be achieved by altering the direction of flow of current in the electrical solenoids surrounding the permanent magnets .
  • EPM EPM
  • pole configuration namely square, long or transverse etc.
  • Different pole configurations are best suitable for different applications.
  • the new invention provides an apparatus which can be converted from one pole configuration to another, the selection of which can be done depending upon the type of application.
  • a magnetic work holding apparatus is often used as a worktable, whereby a work piece to be machined can be held securely on the worktable by magnetic force, and then machining operation may be performed on the work piece.
  • Electro permanent magnetic- (EPM) work holding apparatuses of flux reversal type are known in which a magnetic circuit is activated or deactivated by magnetising or demagnetising the permanent magnets inside the apparatus.
  • EPM Electro permanent magnetic-
  • This is a combination of permanent magnetic and electro magnetic devices: it presents the advantages of the latter without the disadvantages of the former.
  • These devices use intrinsic energy of the permanent magnetic device but instead of being switched “ON” or “OFF” mechanically, it requires electrical pulses similar to electro magnetic devices but only momentarily delivered by an electrical winding. Once switched “ON", these devices provide magnetic force for infinite duration of time independent of any external energy source.
  • a magnetic anchoring apparatus comprising in combination: an external ferromagnetic crown provided with a base plate and lateral walls; at least one group of four pole pieces defining pairs of corresponding poles of an anchoring surface, said pole pieces presenting their longitudinal axes .at right angles to the base plate and in correspondence with the apices of a square.
  • the apparatus comprises a plurality of permanent magnets for feeding the aforesaid poles, interposed between the pole pieces, and between the latter and said ferromagnetic crown.
  • the principal property of a magnet is its capability to attract ferromagnetic materials resulting from flow of magnetic energy called "flux" between magnetic north and south poles.
  • flux ferromagnetic material resulting from flow of magnetic energy
  • the strength of attraction of a magnet is the function of the quantum of induction of magnetic flux into the work piece and this depends on the pole configuration of the work holding apparatus.
  • Fig.l shows the square poles which were hitherto being used
  • Fig.2 shows the arrangement for long pole configuration
  • Fig.3 depicts the arrangement involving cross pole configuration .
  • Fig 4 and Fig 5 illustrates the use of ferromagnetic strips as additional pole pieces to enhance the performance of the work holding assembly for long pole and cross pole configurations.
  • the work holding face of the apparatus is (1), the base plate is (2), (3) shows the electrical windings, Magnetic poles are shown as (4), permanent magnets are denoted by (5) and the additional pole pieces as 6.
  • the long pole and/or cross pole arrangements of the magnetic poles in accordance with the invention has offered a number of advantages, the most prominent of which is the possibility of using work pieces of varying dimensions , apart from cost considerations.
  • EPM apparatus usually has a square pole configuration which somewhat restrict the adaptability of the apparatus to a particular nature of work piece.
  • the present invention substantially improves the performance by changing the pole configurations from square to long pole or cross pole configurations.
  • a further object of this invention is to improve upon the performance of the EPM apparatus by providing ferromagnetic strips to act as additional pole pieces by interconnecting individual magnetic poles .
  • a still further object of this invention is to provide means for effecting alteration in the configuration of the magnetic poles of the EPM apparatus, as and when needed or desired.
  • Another object of this invention is to provide means for enhancing the quantum of induction of magnetic flux into the work piece for better attraction thereof to the work holding surface.
  • an electro permanent work holding system with desired variable magnetic pole configuration comprising a work holding face located on a base plate, carrying electrical winding with magnetic poles, below which are placed permanent magnets, the said system being characterized in that the said magnetic poles are deployed in long pole and/or cross pole configurations or arrangement, thereby allowing handling of work pieces of varying dimensions with a grater degree of attachment with the said work holding face.
  • change of configuration of the poles accomplished by changing the polarity of the permanent magnets located beneath in magnetic poles.
  • solenoids are provided around the said permanent magnets for altering or changing the direction of current flow to effect the desired change of polarity resulting the change of configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

L'invention concerne un système de soutien d'ouvrage magnétique électro-permanent avec une configuration de pôle magnétique variable (5), comprenant une face de maintien d'ouvrage (1) située sur une plaque de base (2) portant un enroulement électrique (3) avec des pôles magnétiques (4), au-dessous desquels sont placés des aimants permanents (5), ledit système étant caractérisé en ce que lesdits pôles magnétiques sont déployés dans une configuration ou un agencement carré, long ou de croisé, permettant ainsi la manipulation de pièces à usiner de dimensions variables avec un degré supérieur de rattachement à ladite face de maintien d'ouvrage.
PCT/IN2010/000294 2009-05-06 2010-05-06 Système de soutien d'ouvrage magnétique électro-permanent comportant la conversion d'un pôle magnétique ayant une configuration carrée en un pôle long ou pôle croisé ou vice versa Ceased WO2010128527A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN707/KOL/2009 2009-05-06
IN707KO2009 2009-05-06

Publications (2)

Publication Number Publication Date
WO2010128527A2 true WO2010128527A2 (fr) 2010-11-11
WO2010128527A3 WO2010128527A3 (fr) 2015-02-19

Family

ID=43050581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2010/000294 Ceased WO2010128527A2 (fr) 2009-05-06 2010-05-06 Système de soutien d'ouvrage magnétique électro-permanent comportant la conversion d'un pôle magnétique ayant une configuration carrée en un pôle long ou pôle croisé ou vice versa

Country Status (1)

Country Link
WO (1) WO2010128527A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10454341B1 (en) 2016-11-30 2019-10-22 X Development Llc Progressive force electro-permanent magnets actuator
US10784762B1 (en) 2016-11-30 2020-09-22 X Development Llc Torque transfer using electro-permanent magnets
WO2022203693A1 (fr) * 2019-05-17 2022-09-29 Altius Space Machines Inc. Réseau d'aimants électro-permanents à deux modes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959237U (ja) * 1982-10-15 1984-04-18 鐘通工業株式会社 切換可能の永久磁石チヤツク
JPS59224227A (ja) * 1983-05-30 1984-12-17 Fuji Jikou Kk 永久磁石チヤツク
CN2411869Y (zh) * 2000-04-05 2000-12-27 上海佳明机械有限公司 磁悬浮式磁吸盘
JP3779586B2 (ja) * 2001-10-11 2006-05-31 カネテック株式会社 切り換え可能の永久磁石チャック
CN100563839C (zh) * 2003-11-07 2009-12-02 Sgm台架股份公司 具有铁氧体和稀土永磁体的磁分离器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10454341B1 (en) 2016-11-30 2019-10-22 X Development Llc Progressive force electro-permanent magnets actuator
US10784762B1 (en) 2016-11-30 2020-09-22 X Development Llc Torque transfer using electro-permanent magnets
US11056948B1 (en) 2016-11-30 2021-07-06 X Development Llc Progressive force electro-permanent magnets actuator
WO2022203693A1 (fr) * 2019-05-17 2022-09-29 Altius Space Machines Inc. Réseau d'aimants électro-permanents à deux modes

Also Published As

Publication number Publication date
WO2010128527A3 (fr) 2015-02-19

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