EP2356664A1 - Procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, ainsi que dispositif d'actionnement fabriqué selon le procédé - Google Patents

Procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, ainsi que dispositif d'actionnement fabriqué selon le procédé

Info

Publication number
EP2356664A1
EP2356664A1 EP09752127A EP09752127A EP2356664A1 EP 2356664 A1 EP2356664 A1 EP 2356664A1 EP 09752127 A EP09752127 A EP 09752127A EP 09752127 A EP09752127 A EP 09752127A EP 2356664 A1 EP2356664 A1 EP 2356664A1
Authority
EP
European Patent Office
Prior art keywords
tubular body
armature
pole
rotary member
pole core
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.)
Withdrawn
Application number
EP09752127A
Other languages
German (de)
English (en)
Inventor
Martin Bill
Christoph Meyer
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.)
Hydac Electronic GmbH
Original Assignee
Hydac Electronic GmbH
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 Hydac Electronic GmbH filed Critical Hydac Electronic GmbH
Publication of EP2356664A1 publication Critical patent/EP2356664A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making

Definitions

  • Actuating device in particular for actuating valves, as well as actuating device produced by the method
  • the invention relates to a method for producing an electromagnetic actuating device, in particular for actuating valves, in which a pole tube guiding a magnet armature within an armature space is formed by forming a mechanical connection between a tubular body and at least one further part of the pole tube, e.g. Polkern, is formed. Furthermore, the invention relates to an actuator produced by the method.
  • Such electromagnetic actuators which are referred to in the jargon as proportional solenoids or solenoids, are freely available on the market in a variety of embodiments.
  • a trained as a switching magnet device of this kind is described for example in DE 103 27 209 B3.
  • the armature carries out a displacement movement in the pole tube upon electrical excitation of the associated coil winding. If the energization of the coil winding is omitted, the magnet armature is reset to a starting position at regular intervals via a return spring.
  • the restoring force acts on the armature via the actuator connected to the armature, which is formed substantially bolt-like and extending through the pole core and a respective actuation operation triggers, for example in an externally connected valve for guiding fluid flows.
  • the return spring can be arranged in the actuating device itself and / or preferably on the valve which may be actuated.
  • the reliability depends in such actuators to a large extent on the fact that the pole tube is structurally designed so that it meets the operational requirements, especially in long-term operation. Accordingly, particular importance is to be attached to the formation of mechanical connections between functionally essential elements of the pole tube during manufacture. In the prior art joining methods, such as welded joints, or connections by crimping or crimping are applied in this regard. If the required safety of the mechanical connections is to be ensured, such methods must be carried out carefully and in a time-consuming manner, which causes relatively high production costs.
  • the object of the invention is to provide a method with which such actuating devices can be produced in a simple and comparatively cost-effective manner, which nonetheless are distinguished by a particularly high degree of operational reliability.
  • a significant feature of the invention is that in the manufacture of the pole tube mechanical connections between a tubular body and at least one pole tube associated further part are formed by thermal shrinkage, wherein the tubular body is heated and pressed onto the relevant further part.
  • thermal shrinkage allows not only a rational, ie fast and cheap production, but also leads to particularly good mechanical properties of the pole tube formed from several parts, so that despite low manufacturing costs high reliability of the actuator is guaranteed.
  • the inventive method also enables the particularly efficient production of multi-part pile tubes in such a way that the tubular body is connected by thermal shrinking both with the pole core formed by a first rotary member and with a second rotary member forming the displacement guide of the magnet armature by the heated tubular body to outer Lateral surfaces of both turned parts is pressed.
  • an adhesive preferably a sealant and / or filler-forming adhesive is applied to joints before pressing the heated tubular body. This ensures that tightness and pressure resistance of the connections are guaranteed even at high pressure levels.
  • the tubular body may be favorable to form the tubular body from a non-magnetic metal.
  • the procedure in such a case is that Polkern and a second rotary member to form a magnetic decoupling causing an air gap forming space are connected to each other via the tubular body.
  • the second rotary part which forms the actual displacement guide for the anchor, with a Hubbegrenzung of the armature forming closed end provided.
  • the second rotary member in this case has the form of a hollow cylinder which is open at one end and closed at the other end by a bottom.
  • the second rotary member can be formed as a hollow cylinder whose one end is provided by means of a flare with the separate, forming the stroke limiter end part.
  • the invention also provides an actuating device produced by the method according to one of claims 1 to 11, having the features of claim 12 in its entirety.
  • Figure 1 is a schematically slightly simplified drawn longitudinal section only of the pole tube with therein arranged armature of an embodiment of the actuator according to the invention.
  • Fig. 2 a of FIG. 1 corresponding longitudinal section of a second
  • FIG. 3 shows a schematically simplified longitudinal section of the longitudinal section adjoining the pole core only of the pole tube without magnet armature according to a further exemplary embodiment of the actuating device according to the invention
  • Fig. 4 shows a comparison with FIG. 3 greatly enlarged partial section of the designated in Fig. 3 with IV district and
  • FIG. 5 shows a partial section of the district indicated by V in FIG. 4, greatly enlarged compared to FIG.
  • the pole tube which is designated as a whole by 1 and in which a magnet armature 3 is movably guided, on which a rod-like actuating member 5 is mounted, extending through a central bore 7 of a pole core 9 extends therethrough to the outside.
  • An at least partially surrounding the pole tube 1 coil housing with befindliches inside coil winding and electrical connection elements is not shown in the drawing, since it may be formed in a conventional, suitable, familiar to those skilled in the way.
  • no particular shape characteristics of the rod-like actuating member 5 are shown, as in the prior art, see. DE 10 2004 028 871 A1, may be provided in order to form a fluid connection in the armature space 11 located in the pole tube 1 along the actuating part 5.
  • the pole tube 1 is formed of three main parts, namely the pole core 9 produced as a rotating part, a tubular body 13 made of non-magnetic metal and a second, a hollow cylinder defining rotary member 15.
  • This forms inside the armature space 1 1 and the Displacement guide for the armature 3, which is provided on its outer circumference with its cylinder jacket surface interrupting lubrication grooves 17.
  • the armature 3 shown in FIGS. 1 and 2 this is in its left-hand end position in the drawing in abutment against the bottom surface 19 of a circular cylindrical recess 21, located at the inner end of the Polkernes 9 is located.
  • the pole core 9 as the first rotary part and the second rotary part 15 forming the actual displacement guide of the magnet armature 3 are mechanically fixed to one another via the non-magnetic tubular body 13 in such a way that an intermediate space between the end of the pole core 9 and an air gap 23 forms Rotating part 15 is formed.
  • the pole core 9 forms a control edge 25. This is formed by the tip end edge of the recess 21 in the pole core 9 in that adjoins the end edge 21, an inclined surface 27.
  • the air gap 23 on the pole core 9 causes a magnetic decoupling of the connected via the tubular body 13 parts of the pole tube. 1
  • FIGS. 1 and 2 The position of the magnet armature 3 shown in FIGS. 1 and 2 corresponds to the operating state of the energized coil winding. If the energization is omitted, the armature 3 moves under the influence of the return spring in the drawing to the right in a defined by a stroke limit end position.
  • an end body 29 which is connected to the rotary part 15 and which is anchored at the end of the rotary part 15 by means of a hinge 31.
  • the tubular body 13 covers the pole core 9 and the rotary member 15 connecting surfaces 33 and 35, which are each formed by circular cylindrical depressions in the outer surface of pole core 9 and rotary member 15.
  • the depth of the recesses forming the connecting surfaces 33 and 35 is adapted to the wall thickness of the tubular body 13 such that the tubular body 13, when in position on the connecting surfaces 33, 35, continues on its outer side without recesses the circular cylindrical outer contour of the pole tube 1 ,
  • the wall thickness of the tubular body 13 is substantially less than that of the wood-cylindrical rotary member 15, wherein the thickness ratio is preferably in the range of 1: 6 to 1: 3. In the example shown in FIGS. 1 and 2, this is
  • the mechanical connection of the tubular body 13 to the connecting surface 33 of the pole core 9 and to the connecting surface 35 of the rotary member 15 is carried out in such a manner that the tubular body 13 is thermally shrunk onto the pole core 9 and the rotary member 15 ,
  • the procedure is such that the tubular body 13 is heated to a temperature in the range of about 180 0 C and pressed onto the connecting surfaces 33 and 35 on the pole core 9 and the rotary member 15, wherein pole core 9 and rotary member 15 are preferably at a temperature , which corresponds to the ambient level.
  • a cooling of pole core 9 and / or rotary part 15 to a lower temperature may also be provided in order to optimize the process of shrinking.
  • the compound formed by thermal shrinkage at the pole core 9 and rotary member 15 is sufficiently tight and pressure-resistant at least at a not very high pressure level.
  • the procedure is preferably such that an adhesive is applied to the connecting surfaces 33 and 35 on the pole core 9 and the rotary member 15 before the heated tubular body 13 is pressed.
  • a splice and a seal at the connecting surfaces 33 and 35 is generated.
  • a suitable adhesive and / or filler adhesive has proven suitable, in particular an acrylate-based high temperature adhesive.
  • FIG. 2 The illustrated in Fig. 2 embodiment of the pole tube 1 produced by the method according to the invention differs from the example of FIG. 1 only by an alternative design of the rotary member 15 forming the sliding guide for the armature 3.
  • the rotary member 15 is designed as a closed at one end cylindrical pot, which forms the integral with the pot Tofpboden end portion 37 with its circular, flat inner bottom surface 39, the armature space 11 and a stroke limiter for defining the right in the drawing end position of the armature. 3 forms, which occupies this right-hand end position in the absence of energization of the coil winding.
  • the exemplary embodiment of FIG. 2 corresponds to the example described above, in particular with regard to the connections formed by shrinking between tubular body 13 and polar body 9 and rotary part 15.
  • the tubular body 13 does not have a smooth surface on its inner side, but has in its central longitudinal region a ring body 51 projecting radially inward relative to the longitudinal axis 10, which is bounded axially by inclined surfaces 53, which, fitting at oblique end edges of pole core 9 and rotary member 15, the gap between pole core 9 and rotary member 15 fills as a filler suitably.
  • the annular body 51 forms a field-influencing control edge at the space serving for magnetic decoupling.
  • FIGS. 3 and 5 shows that this toothing is formed by a stepped surface shape of the connection surface 33 on the pole core 9 and on the surface of the connection part 55 resting thereon. The same applies to the not visible in Fig.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, selon lequel un tube polaire (1) guidant un induit magnétique (3) à l'intérieur d'une chambre d'induit (11) est formé par constitution d'une liaison mécanique entre un corps tubulaire (13) et au moins une autre partie (9, 15) du tube polaire (1), par exemple des noyaux polaires (9). L'invention est caractérisée en ce que la liaison mécanique est formée par rétraction thermique en ce sens que le corps tubulaire (13) est chauffé et pressé sur l'autre partie (9, 15).
EP09752127A 2008-12-10 2009-11-13 Procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, ainsi que dispositif d'actionnement fabriqué selon le procédé Withdrawn EP2356664A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008061414A DE102008061414B4 (de) 2008-12-10 2008-12-10 Verfahren zum Herstellen einer elektromagnetischen Betätigungsvorrichtung, insbesondere zum Betätigen von Ventilen, sowie nach dem Verfahren hergestellte Betätigungsvorrichtung
PCT/EP2009/008101 WO2010066327A1 (fr) 2008-12-10 2009-11-13 Procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, ainsi que dispositif d'actionnement fabriqué selon le procédé

Publications (1)

Publication Number Publication Date
EP2356664A1 true EP2356664A1 (fr) 2011-08-17

Family

ID=41625214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09752127A Withdrawn EP2356664A1 (fr) 2008-12-10 2009-11-13 Procédé de fabrication d'un dispositif d'actionnement électromagnétique, notamment pour actionner des soupapes, ainsi que dispositif d'actionnement fabriqué selon le procédé

Country Status (4)

Country Link
US (1) US20110226974A1 (fr)
EP (1) EP2356664A1 (fr)
DE (1) DE102008061414B4 (fr)
WO (1) WO2010066327A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013010833A1 (de) 2013-06-28 2014-12-31 Hydac Electronic Gmbh Elektromagnetische Betätigungsvorrichtung
CN105508332A (zh) * 2014-09-26 2016-04-20 中国航空工业第六一八研究所 基于过盈配合密封的模态选择阀装配工艺方法
DE102016210091A1 (de) * 2016-06-08 2017-12-14 Festo Ag & Co. Kg Elektromagnetische Betätigungseinrichtung mit Ankerführungsanordnung

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DE1514153A1 (de) * 1965-08-28 1969-10-16 Licentia Gmbh Rundkernmagnet fuer Wechselstrom
GB1499326A (en) * 1974-04-18 1978-02-01 Expert Ind Controls Ltd Electromagnetic and armature core tubes for the same
DE2639274B2 (de) * 1976-09-01 1978-08-24 Binder Magnete Gmbh, 7730 Villingen Elektromagnet mit Ankerschwingungsdämpfung
JPS6037467A (ja) * 1983-08-08 1985-02-26 Hitachi Metals Ltd コツク
DE3418654A1 (de) * 1984-05-18 1985-11-21 Mannesmann Rexroth GmbH, 8770 Lohr Elektromagnet fuer ein ventil
JPS63265407A (ja) * 1987-04-23 1988-11-01 Ckd Controls Ltd ソレノイド用チユ−ブの固定方法
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DE19727414A1 (de) * 1997-06-27 1999-01-07 Bosch Gmbh Robert Verfahren zur Herstellung einer Magnetspule für ein Ventil und Ventil mit einer Magnetspule
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Also Published As

Publication number Publication date
WO2010066327A1 (fr) 2010-06-17
US20110226974A1 (en) 2011-09-22
DE102008061414B4 (de) 2013-01-31
DE102008061414A1 (de) 2010-06-24

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