EP3270389B1 - Magnetisation d'arbre creux - Google Patents

Magnetisation d'arbre creux Download PDF

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Publication number
EP3270389B1
EP3270389B1 EP16179056.3A EP16179056A EP3270389B1 EP 3270389 B1 EP3270389 B1 EP 3270389B1 EP 16179056 A EP16179056 A EP 16179056A EP 3270389 B1 EP3270389 B1 EP 3270389B1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
contact device
internal
pole
rod
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.)
Active
Application number
EP16179056.3A
Other languages
German (de)
English (en)
Other versions
EP3270389A1 (fr
Inventor
Christian Seene
Marianne Schillay
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.)
NCTE AG
Original Assignee
NCTE AG
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 NCTE AG filed Critical NCTE AG
Priority to EP16179056.3A priority Critical patent/EP3270389B1/fr
Priority to PCT/EP2017/057153 priority patent/WO2018010855A1/fr
Priority to US16/313,529 priority patent/US11094441B2/en
Priority to CN201780043266.6A priority patent/CN109478455B/zh
Priority to JP2019523166A priority patent/JP6740473B2/ja
Publication of EP3270389A1 publication Critical patent/EP3270389A1/fr
Application granted granted Critical
Publication of EP3270389B1 publication Critical patent/EP3270389B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets

Definitions

  • the invention relates to a device for magnetizing a hollow shaft and a corresponding method.
  • the document WO 97/37362 A1 describes a method of magnetizing a cylindrical body, the method comprising the steps of applying a magnetic field to the body and varying the magnetic field surrounding the body.
  • the document WO 2016/096190 A1 discloses an apparatus and method for magnetizing at least one permanent magnet, the apparatus comprising a first field guide, a second field guide.
  • a receptacle for the permanent magnet is formed, wherein the excitation magnet is movable relative to the Feldleitensen and the permanent magnet on a circular path around the permanent magnet, so that in a Magnetizing position a magnetic field of the exciter magnet magnetizes the permanent magnet.
  • one of them is non-contact magnetization of hollow shafts which are only open on one side DE 102012004105 A1 disclosed.
  • a current on the open side of the hollow shaft is switched on and executed, The introduced current magnetizes the shaft and due to an interposed magnetic shield demagnetization is prevented by the running current.
  • the three different contact points of the PCME process result in an uneven current distribution around the circumference of the shaft, since the resistance of the individual contacts under realistic conditions is not the same.
  • the non-contact magnetization of hollow shafts works especially at small inner diameters, since the shielding of the current required for magnetization must be thicker than the inner diameter of the shaft.
  • the invention has for its object to provide a device and a method by which or with which a uniform magnetization of a hollow shaft in the circumferential direction can take place, in particular a hollow shaft with a small inner diameter.
  • the device comprises an electrically conductive rod-shaped element for generating a magnetic field or a plurality of magnetic fields by means of an inner contacting device arranged on the rod-shaped element for contacting an inner contact region on an inner side of the hollow shaft; an external contactor for contacting with an outer contact portion on an outer side of the hollow shaft; and a current source for generating a current pulse through the rod-shaped member, the inner contactor and thecommunANDiervorides, as well as through the hollow shaft between the inner and the outer contact area.
  • a first pole of the power source is connected to at least one power supply contact point of the rod-shaped element or it is connectable, and a second pole of the power source is connected to the discourseromeiervorides or he is connected thereto, and an electrical polarity of the first pole is opposite to electrical polarity of the second pole.
  • the current flow (in contrast to the PCME method) is not guided in the region of the shaft to be magnetized, but the magnetizing current flows in the rod-shaped element.
  • the current flow in the shaft from the inside to the outside or vice versa only serves to close the circuit between the inner and the outer contactor.
  • the stabfömige element may in turn be a hollow bar.
  • the dismissessorvoriques may comprise an electrically conductive cylindrical element, in which at least a portion of the hollow shaft during magnetization can be arranged.
  • the current can be supplied to or removed from the contact points on the outside.
  • a wiring may be provided with which a connection to the power source can be made.
  • the inner contacting device and the technicallysorgeiervoriques can be arranged radially opposite with respect to the hollow shaft. This minimizes the current flow in the axial direction of the hollow shaft, since the current can flow directly in the radial direction of the shaft.
  • the inner contacting device and / or the outer contacting device may be annular. This provides a particularly uniform type of contacting available.
  • the inner contacting device and / or the conspiracyrobevorses a plurality of each arranged in a circle inner and outer contact elements comprise, wherein the contact elements are preferably provided with a spring bias in the direction of the hollow shaft to be magnetized.
  • the contact elements are preferably provided with a spring bias in the direction of the hollow shaft to be magnetized.
  • an equal number of inner and outer contact elements may be provided, which further leads to an equal distribution of the current flow.
  • the inner and / or outer contact elements are arranged in the circumferential direction of the hollow shaft with a uniform angular distance from each other. In this way results in a homogenization of the current flow through the shaft.
  • two power supply pads may be provided and the inner contacting device may be disposed on the rod-shaped member between the two power supply pads of the rod-shaped member, either having both power supply pads electrically connectable to the first pole of the power source, or a power supply pad is electrically connected to the first pole of the power source and the other power supply pad is electrically connected to the first pole of the power source.
  • the object according to the invention is likewise achieved by a method for magnetizing a ferromagnetic, electrically conductive hollow shaft according to claim 8.
  • the method according to the invention comprises the steps of introducing an electrically conductive rod-shaped element with a device arranged thereon mecanicheftiervorses in a cavity of the hollow shaft, preferably such that the rod-shaped element is arranged on and along an axis of the hollow shaft, and contacting the mecanicheftiervorides with an inner contact region on an inner side of the hollow shaft; Contacting an outer contactor with an outer contact portion on an outer side of the hollow shaft; and generating a current pulse through the rod-shaped element, the inner contacting device and thequaintiervorides, and through the hollow shaft between the inner and the outer contact region, wherein the hollow shaft is magnetized with the generated magnetic field of the current-carrying rod-shaped element.
  • the introduction of the electrically conductive rod-shaped element into the cavity of the hollow shaft may in particular comprise passing the rod-shaped element through the hollow shaft cavity, such that thereafter opposite end regions of the rod-shaped element are respectively arranged outside the hollow shaft.
  • the step of arranging the hollow shaft may be provided in an electrically conductive cylindrical element of the external contacting device, wherein the axis of the hollow shaft is preferably arranged on and along an axis of the cylindrical element.
  • the inner contacting device and the outer contacting device may be arranged radially opposite each other with respect to the hollow shaft.
  • the inner contacting device and / or the propositiontitleiervoriques may be annular, wherein the rings can be brought into contact with the inside or the outside of the hollow shaft.
  • the inner contacting device and / or the conspiracyrobevoriques can a plurality of each circularly arranged inner and outer contact elements include, which can be brought into contact with the inside or the outside of the hollow shaft.
  • an equal number of inner and outer contact elements may be provided, and respective inner and outer contact elements may be arranged radially opposite each other with respect to the hollow shaft.
  • the inner and / or outer contact elements can be arranged in the circumferential direction of the hollow shaft with uniform angular distance from each other.
  • the following further steps may be provided: connecting at least one power supply pad of the rod-shaped member to a first pole of a power source, connecting the external contactor to a second pole of the power source, wherein an electrical polarity of the first pole opposite to the electrical Polarity of the second pole is.
  • two opposing power contact pads of the rod-shaped member may be connected to the first pole, or one of the power contact pads may be permanently connected to the first pole, and the second current-feeding pad may be inserted after insertion of the rod-shaped member the cavity of the hollow shaft are connected to the first pole.
  • the material of the hollow shaft preferably comprises steel.
  • Fig. 1 a first embodiment of the device according to the invention is shown.
  • the device for magnetizing a ferromagnetic, electrically conductive hollow shaft 90, the device comprises an electrically conductive rod-shaped element 10 for generating a magnetic field with an inner contacting device 20 arranged thereon for contacting an inner contact region on an inner side of the hollow shaft 90; an outer contactor 30 for contacting with an outer contact portion on an outer side of the hollow shaft 90; and a current source 80 for generating a current pulse through the rod-shaped member 10, the inner contactor 20, and the outer contactor 30, as well as through the hollow shaft 90 between the inner and outer contact regions.
  • the intuitionorialiervorraum 30 includes an electrically conductive cylindrical member 35 in which the hollow shaft 90 is disposed during the magnetization. With the cylindrical element 35, the current can be supplied to or removed from the contact points on the outside.
  • the cylindrical element 35 and the rod-shaped element 10 are arranged for mounting in a base body 70 which electrically insulates the two elements.
  • the inner contactor 20 and the technically.iervorides 30 are arranged radially opposite with respect to the hollow shaft, wherein the CertainlyKeyiervorides 20 and the technicallyTypeiervorides 30 include a plurality of each circularly arranged inner contact elements 21 and outer contact elements 31, wherein the contact elements 21, 31 are provided with a spring bias in the direction of the shaft 90 to be magnetized.
  • the arrowed lines indicate the directions of the magnetic fields induced by the current-carrying rod-shaped element 10 in the hollow shaft 90.
  • Two power supply pads 11, 12 are provided, and the inner pad 20 is disposed on the rod-shaped member 10 between the two power supply pads 11, 12 of the rod-shaped member 10, with a power pad 11 permanently electrically connected to the first pole of the power source 80 is connected and the other power supply pad 12 with the first pole of the power source 80 after introduction of the hollow shaft 90 (slipping over the hollow shaft 90 via the rod 10) is electrically connected.
  • the second pole of the power source 80 is connected to the external contactor 30.
  • the electrical polarity of the first pole is opposite to the electrical polarity of the second pole.
  • a respective current flow from both power supply pads 11, 12 of the rod-shaped element 10 to the inner contacting device 20 generates two currents in the opposite direction (see arrows in the rod-shaped element 10), whereby the hollow shaft 90 is magnetized in opposite circumferential directions accordingly.
  • FIG. 2 A B two embodiments for contacting in the device according to the invention are shown in cross section. Like reference numerals designate corresponding components here as in Fig. 1 are shown.
  • the inner contact elements 21 are provided in a circle around the rod 10 and in respective contact with an inner side of the hollow shaft 90.
  • the outer contact elements 31 are each arranged radially opposite, so as to limit the flow of current through the hollow shaft, preferably in the radial direction and in particular to avoid a flow of current in the axial direction of the hollow shaft 90, which can lead to magnetic interference fields with respect to the desired magnetization.
  • the schwetrachlor 20 comprises a ring for contacting the hollow shaft from the inside and the conceptcardiervorides 30 also includes a ring for contacting the hollow shaft 90 from the outside. Both rings are arranged radially opposite one another for the same reasons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (15)

  1. Dispositif (100) pour magnétiser un arbre creux ferromagnétique (90, 95) électriquement conducteur, le dispositif comprenant :
    un élément en forme de barreau (10) électriquement conducteur, destiné à produire un ou plusieurs champs magnétiques, et sur lequel est agencé un dispositif de mise en contact intérieur (20) pour la mise en contact avec une zone de contact intérieure sur un côté intérieur de l'arbre creux, et
    un dispositif de mise en contact extérieur (30) pour la mise en contact avec une zone de contact extérieure sur un côté extérieur de l'arbre creux,
    et une source de courant (80) pour produire une impulsion de courant à travers l'élément en forme de barreau (10), le dispositif de mise en contact intérieur (20) et le dispositif de mise en contact extérieur (30), ainsi qu'à travers l'arbre creux entre la zone de contact intérieure et la zone de contact extérieure,
    dispositif dans lequel un premier pôle de la source de courant (80) est relié ou peut être relié à au moins une zone de contact d'alimentation en courant (11, 12) de l'élément en forme de barreau (10), et un deuxième pôle de la source de courant (80) est relié ou peut être relié au dispositif de mise en contact extérieur (30), et dans lequel la polarité électrique du premier pôle est opposée à la polarité électrique du deuxième pôle.
  2. Dispositif selon la revendication 1, dans lequel le dispositif de mise en contact extérieur comprend un élément de forme cylindrique (35) électriquement conducteur, dans lequel peut être agencé au moins une partie de l'arbre creux pendant la magnétisation.
  3. Dispositif selon la revendication 1 ou la revendication 2, dans lequel le dispositif de mise en contact intérieur et le dispositif de mise en contact extérieur peuvent être agencés de manière radialement opposée l'un à l'autre par rapport à l'arbre creux.
  4. Dispositif selon l'une des revendications 1 à 3, dans lequel le dispositif de mise en contact intérieur et/ou le dispositif de mise en contact extérieur sont d'une configuration de forme annulaire.
  5. Dispositif selon l'une des revendications 1 à 3, dans lequel le dispositif de mise en contact intérieur et/ou le dispositif de mise en contact extérieur comprend un grand nombre d'éléments de contact (21, 31) respectivement intérieurs et extérieurs, agencés respectivement selon une forme annulaire, dans lequel les éléments de contact sont de préférence dotés d'une précontrainte par ressort en direction de l'arbre creux à magnétiser, et dans lequel sont de préférence prévus un nombre identique d'éléments de contact intérieurs et extérieurs.
  6. Dispositif selon la revendication 5, dans lequel les éléments de contact intérieurs et/ou extérieurs sont agencés avec un espacement angulaire régulier dans la direction périphérique de l'arbre creux.
  7. Dispositif selon l'une des revendications 1 à 6, dans lequel sont prévues deux zones de contact d'alimentation en courant (11, 12), et le dispositif de mise en contact intérieur (20) est agencé sur l'élément en forme de barreau (10) entre les deux zones de contact d'alimentation en courant (11, 12), dans lequel les deux zones de contact d'alimentation en courant peuvent être reliées électriquement au premier pôle de la source de courant, ou bien dans lequel une zone de contact d'alimentation en courant est reliée électriquement au premier pôle de la source de courant et l'autre zone de contact d'alimentation en courant peut être reliée électriquement au premier pôle de la source de courant.
  8. Procédé pour magnétiser un arbre creux ferromagnétique (90) électriquement conducteur, le procédé comprenant les étapes suivantes :
    l'introduction d'un élément en forme de barreau (10) électriquement conducteur avec un dispositif de mise en contact intérieur (20) qui y est agencé, dans une cavité de l'arbre creux, de préférence de manière telle, que l'élément en forme de barreau soit agencé sur et le long d'un axe de l'arbre creux, et la mise en contact du dispositif de mise en contact intérieur avec une zone de contact intérieure sur un côté intérieur de l'arbre creux ;
    la mise en contact d'un dispositif de mise en contact extérieur (30) avec une zone de contact extérieure sur un côté extérieur de l'arbre creux ; et
    la production d'une impulsion de courant à travers l'élément en forme de barreau, le dispositif de mise en contact intérieur et le dispositif de mise en contact extérieur, ainsi qu'à travers l'arbre creux entre la zone de contact intérieure et la zone de contact extérieure, l'arbre creux étant magnétisé par le champ magnétique produit à cette occasion, de l'élément en forme de barreau où circule le courant.
  9. Procédé selon la revendication 8, d'après lequel il est en outre prévu l'étape de l'agencement de l'arbre creux dans un élément de forme cylindrique électriquement conducteur du dispositif de mise en contact extérieur, et d'après lequel l'axe de l'arbre creux est agencé de préférence sur et le long d'un axe de l'élément de forme cylindrique.
  10. Procédé selon la revendication 8 ou la revendication 9, d'après lequel on agence le dispositif de mise en contact intérieur et le dispositif de mise en contact extérieur de manière radialement opposée l'un à l'autre par rapport à l'arbre creux.
  11. Procédé selon l'une des revendications 8 à 10, d'après lequel le dispositif de mise en contact intérieur et/ou le dispositif de mise en contact extérieur sont d'une configuration de forme annulaire, et sont amenés en contact avec le côté intérieur et respectivement le côté extérieur de l'arbre creux.
  12. Procédé selon l'une des revendications 8 à 10, d'après lequel le dispositif de mise en contact intérieur et/ou le dispositif de mise en contact extérieur comprend un grand nombre d'éléments de contact respectivement intérieurs et extérieurs agencés respectivement selon une forme annulaire, qui sont amenés en contact avec le côté intérieur et respectivement le côté extérieur de l'arbre creux.
  13. Procédé selon la revendication 12, d'après lequel il est prévu un nombre identique d'éléments de contact intérieurs et extérieurs, et d'après lequel on agence les éléments de contact intérieurs et extérieurs respectivement considérés de manière radialement opposée les uns aux autres par rapport à l'arbre creux.
  14. Procédé selon la revendication 12 ou la revendication 13, d'après lequel les éléments de contact intérieurs et/ou extérieurs sont agencés avec un espacement angulaire régulier dans la direction périphérique de l'arbre creux.
  15. Procédé selon l'une des revendications 8 à 14, d'après lequel avant la production de l'impulsion de courant, on prévoit les étapes supplémentaires suivantes :
    la liaison d'au moins une zone de contact d'alimentation en courant de l'élément en forme de barreau à un premier pôle d'une source de courant, la liaison du dispositif de mise en contact extérieur à un deuxième pôle de la source de courant, la polarité électrique du premier pôle étant opposée à la polarité électrique du deuxième pôle.
EP16179056.3A 2016-07-12 2016-07-12 Magnetisation d'arbre creux Active EP3270389B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16179056.3A EP3270389B1 (fr) 2016-07-12 2016-07-12 Magnetisation d'arbre creux
PCT/EP2017/057153 WO2018010855A1 (fr) 2016-07-12 2017-03-27 Aimantation d'un arbre creux
US16/313,529 US11094441B2 (en) 2016-07-12 2017-03-27 Magnetization of a hollow shaft
CN201780043266.6A CN109478455B (zh) 2016-07-12 2017-03-27 空心轴的磁化
JP2019523166A JP6740473B2 (ja) 2016-07-12 2017-03-27 中空シャフトの磁化

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16179056.3A EP3270389B1 (fr) 2016-07-12 2016-07-12 Magnetisation d'arbre creux

Publications (2)

Publication Number Publication Date
EP3270389A1 EP3270389A1 (fr) 2018-01-17
EP3270389B1 true EP3270389B1 (fr) 2019-04-10

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EP16179056.3A Active EP3270389B1 (fr) 2016-07-12 2016-07-12 Magnetisation d'arbre creux

Country Status (5)

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US (1) US11094441B2 (fr)
EP (1) EP3270389B1 (fr)
JP (1) JP6740473B2 (fr)
CN (1) CN109478455B (fr)
WO (1) WO2018010855A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN112185647B (zh) * 2019-07-04 2021-12-31 华中科技大学 一种周期性背景磁场的产生装置及方法

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GB9808792D0 (en) 1998-04-23 1998-06-24 Effective Torque Technologies Magnetising arrangements for torque/force sensor
JP4800222B2 (ja) 2003-12-30 2011-10-26 エヌシーティーエンジニアリング ゲーエムベーハー 物体を磁化するための方法及び装置
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ES2700298T3 (es) * 2010-12-29 2019-02-14 Vestas Wind Sys As Magnetizador y ensamblador para máquinas eléctricas
DE102012004105A1 (de) * 2012-03-01 2013-09-05 Nctengineering Gmbh Berührungslose Magnetisierung von Hohlwellen
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Also Published As

Publication number Publication date
WO2018010855A1 (fr) 2018-01-18
US11094441B2 (en) 2021-08-17
JP6740473B2 (ja) 2020-08-12
US20190318859A1 (en) 2019-10-17
CN109478455B (zh) 2021-01-15
JP2019525498A (ja) 2019-09-05
EP3270389A1 (fr) 2018-01-17
CN109478455A (zh) 2019-03-15

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