EP1817132A2 - Procédé de traitement électrochimique d'une pièce et électrode pour un procédé de ce type - Google Patents

Procédé de traitement électrochimique d'une pièce et électrode pour un procédé de ce type

Info

Publication number
EP1817132A2
EP1817132A2 EP05794747A EP05794747A EP1817132A2 EP 1817132 A2 EP1817132 A2 EP 1817132A2 EP 05794747 A EP05794747 A EP 05794747A EP 05794747 A EP05794747 A EP 05794747A EP 1817132 A2 EP1817132 A2 EP 1817132A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
electrode
electrode body
ecm
tool
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Withdrawn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
EP05794747A
Other languages
German (de)
English (en)
Inventor
Carl Johannes Fruth
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
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 Individual filed Critical Individual
Publication of EP1817132A2 publication Critical patent/EP1817132A2/fr
Withdrawn legal-status Critical Current

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
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

Definitions

  • the present invention relates to various methods of electrochemical machining of a workpiece. Furthermore, the invention relates to methods for producing a tool to be used as an electrode in an electrochemical machining process, which is intended for the electrochemical machining of a workpiece. In addition, the invention relates to electrodes intended for use in a process for the electrochemical machining of a workpiece.
  • Electrodes for the spark erosion process are produced today by milling graphite or copper, since these materials show a burn-off behavior favorable for spark erosion. Other materials are only very suitable for this purpose.
  • a disadvantage of spark erosion is that the electrodes are subject to material wear and the processing of a workpiece takes a long time and is therefore expensive. Accordingly, this method is used only for very specific workpieces. An economical serial machining of workpieces is rather unrealizable.
  • Elysieren which is also referred to as electro-chemical milling (ECM process)
  • ECM process electro-chemical milling
  • the DC current flowing between the workpiece and the tool shapes the workpiece to the predetermined shape by dissolving out material particles.
  • an electrolyte is brought through an insulated nozzle to a speed of up to 30 m / s and achieves very high removal rates at current densities of 250 A / cm 2 .
  • the workpiece to be machined is an electrode
  • the other electrode is the tool having the desired shape on the workpiece, so that the desired corresponding removal takes place on the workpiece.
  • the Elysieren or ECM method has often been used only for very specific components, in particular for the effective deburring of metallic series components or for
  • GB 2 096 518 A discloses a method and apparatus for electrically working a workpiece.
  • a so-called EDM method and an ECM method using a strong electrolyte are combined with each other.
  • the workpiece as well as a tool used here for forming the workpiece sin, d are not explained in detail.
  • electrodes only conventional copper-graphite wires or tungsten electrodes are mentioned.
  • DE 101 11 019 A1 discloses an apparatus and a method for structuring a surface of an electrically conductive object connected as anode by means of a device
  • the disclosed ECM system has an anode and a cathode, and between the cathode and the surface to be structured is an electrolyte.
  • the structure on the surface of the article is made by means of a mask integrated in the ECM system. It is also disclosed that the cathode, the mask and the surface to be structured can be pressed as a sandwich.
  • DE 102 37 324 A1 discloses a method for producing an electrode for the electrochemical machining of a workpiece and an electrode produced by the method.
  • an electrode body made of an electrically conductive carrier material is coated on the surface with an insulating material. Then, the insulating material is removed in areas of the surface of the electrode body which correspond to a structure to be formed by electrochemical machining in the surface of the workpiece.
  • EP 0 223 401 A1 shows a partially conducting cathode for electrochemical machining.
  • the cathode includes a processing surface of which at least a portion of nonconductive and conductive materials stacked together is selected, wherein the spacing and thickness of the nonconductive and conductive materials are selected such that excessive ablation at a convex radius of the Workpiece surface is reduced.
  • PEM process is an adaptation of the classical electrochemical process. This process has been developed by the company PEM TECH GmbH for electro-chemical processing mbH / Germany.
  • the PEM technology is a modified variant of the previously explained ECM method and is thus to be subsumed under the genus ECM method or Elysieren or electro-chemical processing in general.
  • the PEM technology relies on the direct and largely proportional dependence of gap distance between electrode and workpiece and thus achievable geometrical or surface accuracies. The necessary rinsing of the gap with fresh electrolyte can no longer be realized with gaps around 10 ⁇ m. Correspondingly, this gap distance represents the limit for the classical EMC method.
  • Electrode movement In the PEM method, about 50 Hz are realized. That is, by changing the gap width, more precise surface accuracies can be achieved. So it is basically a die sinking process with vibrating electrode. Between the electrode and the workpiece - as described above with respect to the ECM method - a DC voltage is applied, whereby the workpiece corresponding
  • Geometry of the trailing electrode dissolves. Components are created with arbitrarily complicated geometrical shapes in almost all electrically conductive metals, such as e.g. high tempered steels, bearing steels, powder metallurgical steels and superalloys (e.g., nickel base alloy).
  • electrically conductive metals such as e.g. high tempered steels, bearing steels, powder metallurgical steels and superalloys (e.g., nickel base alloy).
  • the PEM process thus opens up access to the application, which hitherto has not been possible or economically viable with the known methods of spark erosion or classical electrochemical removal.
  • the electrodes necessary for carrying out the ECM method and the PEM method have hitherto been produced by conventional methods such as milling, eroding or etching.
  • a method for the electrochemical machining of a workpiece in which a workpiece, in particular in rapid prototyping technology, is constructed in layers of a conductive material.
  • the machined workpiece is anodically contacted, and a tool serving as an electrode is placed opposite a work site to be machined such that a gap remains.
  • the tool is contacted cathodically and in the gap between the workpiece and the tool, a conductive medium is introduced, so that flows by applying an electric current and by electrolysis metal ions are released from the workpiece, whereby a defined removal of the workpiece according to the contour of the tool he follows.
  • a further aspect of the present invention comprises a workpiece for machining, in which, instead of the workpiece, the tool serving as the electrode is produced in a layered construction by means of rapid prototyping technology as an alternative to the abovementioned machining method.
  • a metallic workpiece is contacted anodically and a tool constructed in layers is arranged opposite a workpiece to be machined in such a way that a gap remains.
  • the tool is contacted cathodically and a conductive medium is brought into the gap, so that flows by applying an electrical voltage current and by electrolysis metal ions are released from the workpiece, whereby a defined removal takes place on the workpiece.
  • a metal layer is deposited on at least a portion of the outside of the fabricated electrode if the individual layers from which it is constructed consist of a non-electrically conductive material.
  • An alternative to the aforementioned methods involves laminating both the workpiece and the tool serving as an electrode.
  • a method is proposed for producing a tool to be used as an electrode in an ECM method, which tool is intended for the electrochemical machining of a workpiece.
  • the electrode is produced in layered construction by means of a rapid prototyping method, wherein a desired for the removal of the workpiece in the ECM process outer contour is generated on the electrode.
  • a metal layer is deposited in known manner on at least part of the outside of the fabricated electrode which is intended to remove the workpiece.
  • the application of the metal layer can be done in the latter case, for example, by electroplating, in a CVD method, PVD method, painting, spraying or the like.
  • At least one channel is created that leads to the outside of the electrode or workpiece to form a conductive medium when using the electrode or workpiece in the ECM - To supply process in a working gap between the electrode and the workpiece or to be able to suck this through the channel.
  • Another aspect of the present invention relates to a method for producing a tool to be used as an electrode in an ECM method for electrochemically machining a workpiece.
  • This further method according to the invention comprises the steps of producing a body from a multiplicity of layers by means of a rapid prototyping method, the respective contours of which together form the outer contour of the electrode body desired for the removal of a workpiece in the ECM method.
  • This is followed by a molding of the existing body of a plurality of layers for producing a casting mold whose inner contour by the molding, which has the desired outer contour of the electrode body for removing a workpiece in the ECM process.
  • an electrode body is cast in the produced mold, whereby the desired for ablation of a workpiece in the ECM process outer contour of an electrode body is achieved.
  • an electrically conductive layer is applied from at least part of the surface of the cast electrode body, if the electrode body itself consists of a non-conductive material.
  • the methods for applying the electrically conductive layer such as a metal coating are well known. In particular, reference is made to the exemplary selection of suitable metal coating methods explained above.
  • This electrode for use in an ECM process for electrochemically machining a workpiece.
  • This electrode according to the invention comprises an electrode body which consists of a multiplicity of layers produced by means of rapid prototyping technology whose respective contours together form the outer contour of the electrode body which is desired for the removal of a workpiece in the ECM method.
  • An electrically conductive layer is applied to at least part of the surface of this electrode body if the layers are not made of a conductive material.
  • the electrode according to the invention comprises an electrode body with an outer contour desired for the removal of a workpiece in the ECM method.
  • the electrode body is produced here by casting in a casting mold whose inner contour is defined by molding a body which consists of a plurality of layers produced by rapid prototyping technology, the respective contours taken together the desired outer contour for removing a workpiece in the ECM process of the electrode body.
  • the present invention is based on the idea to combine the known for completely different applications rapid prototyping technologies for layering a body with complicated surface structures with the ECM method.
  • precise metallic workpieces and tools can be produced easily and inexpensively in a very short time.
  • electrodes for use in ECM processes with hitherto unrealizable surface structures and accuracies can be produced.
  • Due to the more accurate and cost-effective production of electrodes in layered construction according to the layer-forming rapid prototyping technologies known per se for other fields of application complicated workpieces can be economically produced in the mentioned ECM processes.
  • the particular advantages of the layer structure of the electrodes now also come with larger series production of Workpieces with complicated and high accuracy surfaces are used.
  • a rinsing or suction channel system here comprises a plurality of channels, which lead to different locations on the surface of the electrodes and allow a targeted supply or discharge of electrolyte.
  • the proposed combination of ECM method and a layer structure of electrodes by means of rapid prototyping process can be implemented fast and automated systems for the production of complicated workpieces.
  • High accuracies and complex structures on the workpieces can be achieved.
  • very smooth, i. low roughness components having economical production.
  • any metallic material can be used as a material.
  • There are basically no major restrictions and any number of copies of workpieces can be produced.
  • an optimization of the flushing in the ECM process for the electrolyte can be realized.
  • the PEM technology mentioned at the beginning can also be combined with the proposed method according to the invention.
  • a flushing or a suction of the electrolyte can take place alternately.
  • a flushing or a suction of the electrolyte can take place alternately.
  • only channels or bores intended for feeding and channels or bores intended for aspiration may be present.
  • a further exemplary embodiment of the present inventive method provides that the application of ultrasound in the metal ion removal is superimposed in order, for example, to increase the rinsing effect.
  • a further exemplary embodiment of the present invention provides that working with vibrations in different directions of action, in turn, to increase the rinsing effect or to increase the accuracy of material removal on the workpiece. This could be complicated specific forms such as screw thread, undercuts, grooves or slide geometry can be produced.
  • the layer-building methods used in the present invention in rapid prototyping technology or rapid prototyping methods can be both metallic workpieces and also processes that produce plastic components.
  • Methods for producing metallic components may be, for example, the following methods: DMLS of the companies EOS and MCP, MLS of the company 3D Systems, Lasercusing of the company throughoutlaser,
  • An example of a build-up process that produces plastic components and can be used in the present invention is stereolithography.
  • Electrodes according to the invention may be hollow and / or have a special filling according to an exemplary embodiment of the present invention.
  • the filling may be a conductive fabric or powder to enable transmission of high currents.
  • electrodes according to the invention can also have an inner space lattice or sintered structure or else be constructed in shells.
  • multi-part electrodes for multi-stage processing are possible.
  • the inventive structure of electrodes for Use in ECM processes also allows for different structural areas on electrodes.
  • Electrodes according to the invention for an ECM method, which are produced by means of a casting method in conjunction with the rapid prototype layered construction.
  • a casting process vacuum casting, front casting, precision casting,. Lost wax, Gilvac, Wegguss etc., so that the electrodes according to the invention are formed by positive patterns.
  • electrodes in layered construction for use in ECM processes which are produced from negative samples by means of a casting process such as, for example, vacuum casting, front casting, precision casting, lost-wax casting, Gilvac, precision casting.
  • rapid prototyping method and “rapid prototyping technology” in relation to the present invention include not only the methods expressly mentioned herein, but also all other methods and technologies which include Assigns specialist in the field of rapid prototyping. In general, all methods fall under that build a body in layers. In addition, all possible combinations of individual layer construction methods are to be subsumed under the terms mentioned.
  • FIG. 1 shows the various steps I-IV of a method according to the invention for the electrochemical machining of a workpiece with a layer-produced electrode.
  • FIG. 2 shows a detail of method step IV according to FIG. 1;
  • Fig. 3 is a sectional view similar to Figure 2 of an electrode and a workpiece, wherein the electrode shape is modified with respect to FIG. 2.
  • Fig. 4 is a FIGS. 2 and 3 similar sectional view of a workpiece and a
  • Electrode wherein the electrode is provided with respect to the representations in Figures 2 and 3 with a metal layer;
  • Fig. 5 is a multi-part electrode for the ECM method, the parts of various
  • FIG. 6 shows a further embodiment of a hollow electrode according to the invention for the
  • FIG. 7 shows a further exemplary embodiment of an electrode according to the invention with flushing and suction channels for the ECM method
  • FIG. 8 shows a further exemplary embodiment of an electrode according to the invention for the ECM method, which is hollow and has a filling in a conductive material
  • 9 shows a further exemplary embodiment of an electrode according to the invention for the ECM method, which is hollow and has a conductive coating and a filling
  • Fig. 11 is a side view of another exemplary embodiment of an electrode
  • FIG. 12 shows a fiction, contemporary electrode for the ECM method produced in a layered mold
  • FIG. 13 shows another exemplary embodiment of an ECM process electrode according to the invention formed by casting in a layered mold.
  • Fig. 14 shows another exemplary embodiment of the invention comprising a
  • 15 shows a further exemplary embodiment of the invention comprising two electrodes for the simultaneous machining of two different regions of a workpiece.
  • an electrode body 1 is built up in layers in a manner known per se in an RP machine (rapid prototyping) in a liquid plastic bath 11.
  • a laser 15 which in the view shown in FIG. 1 both can be moved in the horizontal plane and is adjustable in height, the desired cross section of a layer 3 of the electrode body 1 is generated.
  • the laser 15 is moved according to the desired contour in the horizontal plane and exposed by appropriate exposure, a portion of the plastic layer 13 of the liquid plastic 11 and cured it.
  • any contours and layer shapes 3 can be generated.
  • an electrode 1 can have different contours 5 and 9 on different sides.
  • This layered in the stereolithography process electrode body 1 is made of plastic in the example mentioned. By admixing appropriate materials in the plastic curable by the laser 15, the electrode body 1 can be rendered conductive. If this conductivity is not sufficient to use such an electrode body 1 in the ECM method, such an electrode 1 can also be provided with a metallic coating 2, as will be explained later.
  • the electrode body 1 is electrically conductive.
  • the electrode 1 is provided with an electrical connection 17, which is connected via a cable 19 to a DC voltage source.
  • a workpiece 21 is also provided with a terminal 23 and connected via a cable 25 to a DC voltage source.
  • the workpiece 21 here forms the anode, the tool, ie the electrode 1, the cathode. This arrangement is in a known per se ECM machine or a PEM machine.
  • step III an electrolyte 32 is introduced via a nozzle 33 into a working gap 50 between the electrode body 1 and the workpiece 21 via a gap 32. This results in the desired removal of material on the workpiece 21.
  • ECM machines or PEM machines For further details, reference is made to the known methods of operation of ECM machines or PEM machines.
  • step IV a desired cavity 35 is now gradually produced in the workpiece 21 under height adjustment of the electrode 1 and / or the workpiece 21. This cavity 35 can then receive a desired defined contour in accordance with the outer contour of the electrode body 1 produced by the layered construction.
  • FIG. 2 shows a detailed view of method step IV of FIG. 1.
  • the electrolyte 32 flows in on one side, travels through the working gap 50 and is led out of the cavity 35 again. A removal of material takes place essentially in the working gap 50. On the sides 5 and 9 of the electrode body 1 substantially no removal takes place.
  • FIG. 3 essentially corresponds to FIG. 2. Only the shape of the electrode 1 has been changed. Here, a front part has layers with a layer thickness 3 ', the rear part, which forms the stem, comprises thicker layers 3. This electrode shape can have advantages in the machining of the workpiece 21, since then it is ensured that in fact on the sides 5 and 9 no material removal takes place.
  • FIG. 4 shows a view which is fundamentally the same as that of FIGS. 2 and 3.
  • the electrode consists of an electrode body 1 and a coating 2.
  • the electrode body 1 may in turn consist of plastic
  • the coating 2 is a metal coating. It can, for example, be vapor-deposited or applied to the electrode body 1 by painting. The application of the metal layer 2 by electroplating or the like is also possible.
  • FIG. 5 shows a further alternative embodiment of an electrode according to the invention.
  • the electrode 1 consists of two parts Ia and Ib.
  • the electrode body Ia is inserted in the electrode body Ib. Both consist of layered sintered bodies.
  • the porosity of the parts Ia and Ib is different here.
  • On the electrode body Ia there is a connection 17 for the current and an electrolyte supply 22. Via this electrolyte feed 22, the electrolyte 32 is introduced into the sintered body Ia of the electrode and flows out of the electrode body 1a due to the higher porosity in the part Ib.
  • the electrode body part Ib has a complicated outer contour, as a result of which the shape of the material removal on the workpiece 21 can be controlled accordingly.
  • FIG. 6 shows a further electrode for ECM processes with a hollow electrode body 1, which comprises a wall 43 of layered sintered metal.
  • a hollow electrode body 1 which comprises a wall 43 of layered sintered metal.
  • guide channels 44 are provided which allow a targeted feeding of an electrolyte 32.
  • the guide channels 44 can already be produced during layering of the wall 43 or they are subsequently produced separately by drilling or the like.
  • FIG. 7 shows a further exemplary embodiment of an electrode body 1.
  • a plurality of electrolyte supply channels 53 and electrolyte suction channels 55 are present in the electrode body 1. These channels 53, 55 have already been constructed in the RP method in step I of the method according to the invention according to FIG.
  • FIG. 8 again shows a further exemplary embodiment of a hollow electrode 1 constructed according to the invention, the wall 43 of which, like the electrode according to FIG. 6, has a layered construction in RP technology, but in addition to the electrode shown in FIG 70 includes.
  • the filling 70 can serve to stiffen and stabilize the electrode 1. But it can also contribute to improving the conductivity of the electrode. Accordingly, the materials are to be selected.
  • the filling 70 can also be produced at the same time in the case of layered build-up of the wall 70 in RP technology. But it is also possible a separate filling 70 in the cavity.
  • FIG. 9 shows yet another exemplary embodiment of an electrode 1 according to the invention.
  • the u.U. Wall 43 constructed of non-conductive layers is provided with at least one conductive layer 71, 72.
  • an inner and outer layer 71, 72 of conductive material may be present.
  • FIG. 10a) - 10h) show various surface structures that can be produced on an electrode 1 for an ECM method according to the present invention.
  • grooves, guide channels, elevations, specially structured surfaces and surface distances or the like can be created, which improve the supply and removal of electrolyte in the ECM process or with which it is easier to control where a removal takes place on the workpiece.
  • FIG. 11 shows a cross-sectional view of a layered electrode body 1, in which recesses 70 are present on the side in order to be able to better control the removal in the ECM process of material on the workpiece.
  • FIG. 12 shows a cross-sectional view in a rapid prototyping layered mold 60.
  • an electrode body 1 is then produced by this of a plastic or a metal or alloy.
  • the mold 60 has been constructed with individual layers 61 in RP technique.
  • FIG. 14 shows an arrangement in an ECM machine showing a horizontally oscillating electrode 1 according to the invention.
  • workpieces 21a and 21b arranged to be processed by means of EMC technology. Due to the special possibilities of the production of electrodes 1 according to the invention, it is now also possible to carry out various machining operations on workpieces 21a and 21b simultaneously with an electrode 1. In principle, however, a simultaneous machining of two workpieces 21a, 21b is possible by the oscillation of the electrode 1 back and forth. Moreover, this type of machining of a plurality of workpieces 21a, 21b is not bound to electrodes according to the present invention. Commercially available electrodes can also be used for this purpose.
  • Fig. 15 shows an arrangement similar to that in Fig. 14.
  • the electrodes Ia and Ib may, but need not be made in layered construction.

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

Abstract

Procédé de traitement d'une pièce (21) selon lequel une pièce (21) est construite par strates (3) à partir d'une matière conductrice à l'aide d'un procédé de prototypage rapide. La pièce (21) construite par strates (3) est mise en contact de manière à servir d'anode. Ensuite, un outil (1) est placé face à un endroit à traiter de la pièce (21) de manière telle qu'il reste un espace (50). L'outil (1) est mis en contact de manière à servir de cathode et un milieu conducteur (32) est introduit dans l'espace (50), si bien que l'application d'une tension électrique entraîne la circulation de courant et des ions métalliques sont détachés de la pièce (21) par électrolyse, ce qui provoque une dissolution définie de matière de la pièce (21). La présente invention concerne en outre un procédé de production d'un outil destiné à être utilisé en tant qu'électrode (1) dans un procédé d'usinage électrochimique pour le traitement électrochimique d'une pièce (21) et une électrode (1) destinée à être utilisée dans un procédé électrochimique pour le traitement électrochimique d'une pièce (21).
EP05794747A 2004-11-29 2005-09-26 Procédé de traitement électrochimique d'une pièce et électrode pour un procédé de ce type Withdrawn EP1817132A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057527A DE102004057527B4 (de) 2004-11-29 2004-11-29 Verfahren zum elektro-chemischen Bearbeiten eines Werkstücks und Elektrode für ein solches Verfahren
PCT/EP2005/010384 WO2006058575A2 (fr) 2004-11-29 2005-09-26 Procédé de traitement électrochimique d'une pièce et électrode pour un procédé de ce type

Publications (1)

Publication Number Publication Date
EP1817132A2 true EP1817132A2 (fr) 2007-08-15

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EP05794747A Withdrawn EP1817132A2 (fr) 2004-11-29 2005-09-26 Procédé de traitement électrochimique d'une pièce et électrode pour un procédé de ce type

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Country Link
US (1) US20070256938A1 (fr)
EP (1) EP1817132A2 (fr)
DE (1) DE102004057527B4 (fr)
WO (1) WO2006058575A2 (fr)

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DE102004057527B4 (de) 2007-06-21
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US20070256938A1 (en) 2007-11-08
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