WO2006000200A1 - Dispositif de decoupe electrochimique - Google Patents

Dispositif de decoupe electrochimique Download PDF

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Publication number
WO2006000200A1
WO2006000200A1 PCT/DE2005/001135 DE2005001135W WO2006000200A1 WO 2006000200 A1 WO2006000200 A1 WO 2006000200A1 DE 2005001135 W DE2005001135 W DE 2005001135W WO 2006000200 A1 WO2006000200 A1 WO 2006000200A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool electrode
fiber
tool
electrode
net
Prior art date
Application number
PCT/DE2005/001135
Other languages
German (de)
English (en)
Inventor
Holger Reinecke
Wolfgang Menz
Ralf Förster
Bernhard Wielage
Herbert Mucha
Original Assignee
Albert-Ludwigs-Universität Freiburg
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 Albert-Ludwigs-Universität Freiburg filed Critical Albert-Ludwigs-Universität Freiburg
Priority to DE112005002114T priority Critical patent/DE112005002114A5/de
Publication of WO2006000200A1 publication Critical patent/WO2006000200A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting
    • B23H7/08—Wire electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • B23H3/04—Electrodes specially adapted therefor or their manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • B23H3/04—Electrodes specially adapted therefor or their manufacture
    • B23H3/06—Electrode material

Definitions

  • the invention relates to a device for electrochemical cutting which comprises a tool electrode connected to a current / voltage source and to an electrolyte source and clamped between two tool holders applying a tensile force, acted upon by an electrolyte flow in the working gap, in particular for producing long, narrow channels a workpiece.
  • electrolysis in which two electrodes are electrically connected to a voltage source and immersed in an electrolyte bath (eg NaCl).
  • the electrolyte is in this case in the form of separate Na + and Cl " ions and H + and OH " ions.
  • the ions are free to move and therefore justify the ion mobility of the electrolyte and thus the charge replacement taking place at the electrodes.
  • the cations migrate to the cathode and the anions to the anode.
  • the metal atoms here of the workpiece
  • the metal atoms are split into ions with release of their electrons, and in a further reaction, the formation of metal hydroxide takes place.
  • the H + ions take up electrons and form H 2 molecules.
  • the dependence of the ab ⁇ carried material weight of the molecular weight and the ge flowed charge results from the Faraday's law.
  • electrochemical metal machining the removal of material takes place by anodic dissolution of the electrically conductive workpiece material, by means of an electrolyte solution a circuit is produced between a poled as cathode molding tool (tool electrode) and the workpiece poled as an anode.
  • the geometry The tool electrode is adapted to the machining task to be solved and the desired final contour of the workpiece.
  • the electrolyte is forced at high flow rate through the gap formed between the tool electrode and the workpiece.
  • the electrolyte solution is conducted at high pressures through the working gap between the tool and the workpiece and dissipates the heat of reaction and the metallic reaction products.
  • mechanical oscillations can be superimposed on the electrochemical sinking process.
  • the tool electrode is countersunk into the workpiece with or without feed, whereby the accuracy of the imaging can be improved by using pulsed process source.
  • the invention is based on the object herebil ⁇ the tool electrode during electrochemical cutting so that with an improved process behavior in the workpiece to be ⁇ as narrow as possible channels in the predetermined, even complicated contour herge ⁇ can be produced accurately.
  • fibers of different materials can be combined with each other in one and the same fiber tool electrode over its entire length or in individual regions.
  • the length of the fiber tool electrode is between 0.01 and 1000 mm, preferably between 2 and 200 mm, while its thickness comprises a range of 0.01 to 200 microns, but preferably from 1 to 20 microns.
  • the tensile force potential of the individual fibers is between 0.01 and 10 N, preferably between 0.1 and 3 N.
  • carbon fibers which also include graphite fibers, are used which have both a turbo-static and a graphitic structure.
  • PAN fibers polyacrylonitrile
  • pitch such as, for example, oil tar pitch, coal tar pitch or synthetic pitch.
  • the surface of the fiber tool electrode over its entire length or in certain areas coated with conductive and / or insulating materials or treated in vacuum or a vacuum atmosphere with defined residual gas composition or with a microstructure in the form of Kanä ⁇ len, nubs or the like. be provided, thereby affecting the Ei ⁇ properties of the fiber tool electrode in terms of conductivity, the strength properties and Elek ⁇ trolytransport.
  • the latter can be provided with a metallic coating in order to be able to attach assembly auxiliary devices, for example guides or clamping systems, to the tool with the aid of corresponding solders.
  • a sensor attached optionally to the fiber tool electrode serves for the timely detection of fiber damage. to prevent damage during the machining process.
  • the fiber tool electrode can have different cross-sectional shapes, for example round, square, star-shaped and the like, or else have a different cross-sectional shape and size along their length, in order to thereby form channels with a specific channel wall contour or with undercuts.
  • the fiber-tool electrode can have a cross-section which increases gradually from the one to the other end, thereby producing a conically tapering channel during electrochemical cutting.
  • the fiber tool electrode can be designed as a tubular hollow body, preferably also with lateral electrolyte outlet openings, on the one hand to improve cooling and on the other hand specifically and / or additionally to specific channel regions for increasing the material removal and rinsing effect Supply electrolyte solution.
  • the fluid guided in the interior of the fiber tool electrode can also differ from the fluid flowing past its outer surface.
  • the current / voltage source connected to the fiber-optic electrode is connected to a pulse generator in order to impart to the fiber-tool electrode a pulse current or a pulse voltage.
  • the fastening means 4 and 5 for the Faserwerk ⁇ zeugelektrode ⁇ are sealingly in guides (not shown) in the upper and lower vibrating unit 2, 3 arranged independently adjustable in the u and v direction to the fiber tool electrode 6 in the Her Positioning of a channel at a predetermined angle an ⁇ and thus to be able to produce conical sections in the workpiece 9 can.
  • the workpiece 9 is mounted on an operating table (not shown) which, in accordance with the desired course of the channel to be produced in the workpiece 9, can be moved horizontally in the X and / or Y direction.
  • a vertical oscillation movement of the workpiece 9 can also be generated via the clamping system of the workbench.
  • the oscillating units 2, 3 are capable of carrying out a horizontal oscillation movement in the X and / or Y direction, the advancing movement of the fiber tool electrode ⁇ can be superimposed on any oscillatory movement.
  • a continuous electrolyte stream in the working gap along the outer surface of the fiber tool electrode 6 is generated by means of the nozzle body 8 in order, on the one hand, to remove the electrolytic removal and the removal of the workpiece 9 Material and, on the other hand, a cooling of the fiber effect tool electrode 6.
  • the interior of the fiber tool electrode 6 can also be flowed through by the electrolyte in order to achieve better cooling.
  • electrolyte outlet openings 10 can also be provided at specific locations in order to specifically supply specific working gap areas with electrolyte.
  • the rinsing conditions can be improved, in particular in the case of different resolving power of the workpiece material, or undercuts can also be produced by material removal limited to specific channel areas.
  • the invention is not limited to the previously described by the example of a tubular carbon fiber tool electrode be ⁇ execution variant. Rather, a multiplicity of modifications is possible with respect to the fiber material of the fiber tool electrode, the connection of the fibers or the coating or the surface profile of the fiber tool electrode. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

L'invention concerne un dispositif servant à la découpe électrochimique de conduits étroits, profilés différemment, dans une pièce à usiner (9) à l'aide d'une électrode-outil à fibres (6) qui est soumise à une contrainte de traction et qui est constituée de fibres électroconductrices. L'électrode-outil à fibres, munie de fibres éventuellement enrobées dans un matériau support, peut être constituée de fibres différentes sur la section ou dans des segments de longueur individuels, peut avoir une forme et une taille différentes au niveau de la section et/ou peut être réalisée en tant que corps creux tubulaire, éventuellement muni d'ouvertures latérales de sortie d'électrolyte. La surface de l'électrode-outil peut présenter une microtexture et/ou un revêtement conducteur ou isolant. Les porte-outil (4, 5) reliés à des unités oscillantes (2, 3) oscillant perpendiculairement à l'axe longitudinal de l'électrode-outil peuvent être déplacés perpendiculairement à l'axe longitudinal. La table de travail recevant la pièce à usiner (9) peut osciller dans le sens longitudinal de l'électrode-outil.
PCT/DE2005/001135 2004-06-29 2005-06-24 Dispositif de decoupe electrochimique WO2006000200A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005002114T DE112005002114A5 (de) 2004-06-29 2005-06-24 Vorrichtung zum elektrochemischen Schneiden

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004031565.5 2004-06-29
DE102004031565 2004-06-29

Publications (1)

Publication Number Publication Date
WO2006000200A1 true WO2006000200A1 (fr) 2006-01-05

Family

ID=35005746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/001135 WO2006000200A1 (fr) 2004-06-29 2005-06-24 Dispositif de decoupe electrochimique

Country Status (2)

Country Link
DE (1) DE112005002114A5 (fr)
WO (1) WO2006000200A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7465539B1 (en) 1993-02-19 2008-12-16 Takara Bio, Inc. DNA polymerases with enhanced length of primer extension
WO2011124044A1 (fr) * 2010-04-08 2011-10-13 南京航空航天大学 Procédé de traitement par sciage à fils multiples combiné, par usinage/électrolyse pour plaquettes de silicium
WO2012134978A2 (fr) 2011-04-01 2012-10-04 Ice House America, Llc Appareil et procédés d'ensachage de glace
DE102012102325B3 (de) * 2012-03-20 2013-07-18 OxiMa Tec GmbH Elektrode zur Bearbeitung eines Werkstückes
EP2875895A1 (fr) * 2013-11-25 2015-05-27 Mark Otto Procédé pour l'usinage électrochimique de métaux à fil
CN115041762A (zh) * 2022-05-09 2022-09-13 南京航空航天大学 玻璃纤维柔性电极的制备方法及应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155127A (ja) * 1982-03-09 1983-09-14 Mitsubishi Electric Corp ワイヤカツト放電加工用ワイヤ電極
JPH04244317A (ja) * 1991-01-31 1992-09-01 Mitsubishi Heavy Ind Ltd ワイヤカット放電加工機用ワイヤ電極
US6007694A (en) * 1998-04-07 1999-12-28 Phillips Plastics Corporation Electrochemical machining

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155127A (ja) * 1982-03-09 1983-09-14 Mitsubishi Electric Corp ワイヤカツト放電加工用ワイヤ電極
JPH04244317A (ja) * 1991-01-31 1992-09-01 Mitsubishi Heavy Ind Ltd ワイヤカット放電加工機用ワイヤ電極
US6007694A (en) * 1998-04-07 1999-12-28 Phillips Plastics Corporation Electrochemical machining

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 279 (M - 262) 13 December 1983 (1983-12-13) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 018 (M - 1352) 13 January 1993 (1993-01-13) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7465539B1 (en) 1993-02-19 2008-12-16 Takara Bio, Inc. DNA polymerases with enhanced length of primer extension
WO2011124044A1 (fr) * 2010-04-08 2011-10-13 南京航空航天大学 Procédé de traitement par sciage à fils multiples combiné, par usinage/électrolyse pour plaquettes de silicium
US8747625B2 (en) 2010-04-08 2014-06-10 Nanjing University Of Aeronautics And Astronautics Grinding/electrolysis combined multi-wire-slicing processing method for silicon wafers
WO2012134978A2 (fr) 2011-04-01 2012-10-04 Ice House America, Llc Appareil et procédés d'ensachage de glace
DE102012102325B3 (de) * 2012-03-20 2013-07-18 OxiMa Tec GmbH Elektrode zur Bearbeitung eines Werkstückes
WO2013139733A1 (fr) 2012-03-20 2013-09-26 Oximatec Gmbh Oxide Material Technologies Electrodes pour usiner une pièce
EP2875895A1 (fr) * 2013-11-25 2015-05-27 Mark Otto Procédé pour l'usinage électrochimique de métaux à fil
CN115041762A (zh) * 2022-05-09 2022-09-13 南京航空航天大学 玻璃纤维柔性电极的制备方法及应用

Also Published As

Publication number Publication date
DE112005002114A5 (de) 2007-07-12

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