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US3288699A - Apparatus for electrochemical shaping - Google Patents

Apparatus for electrochemical shaping Download PDF

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Publication number
US3288699A
US3288699A US344374A US34437464A US3288699A US 3288699 A US3288699 A US 3288699A US 344374 A US344374 A US 344374A US 34437464 A US34437464 A US 34437464A US 3288699 A US3288699 A US 3288699A
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US
United States
Prior art keywords
blank
tool
segments
workpiece
electrode
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.)
Expired - Lifetime
Application number
US344374A
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English (en)
Inventor
Kempes F Trager
Jack A Cross
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.)
Ex-Cell-O Corp
Original Assignee
Ex-Cell-O Corp
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 Ex-Cell-O Corp filed Critical Ex-Cell-O Corp
Priority to US344374A priority Critical patent/US3288699A/en
Priority to DE19651540723 priority patent/DE1540723A1/de
Priority to GB5955/65A priority patent/GB1062343A/en
Application granted granted Critical
Publication of US3288699A publication Critical patent/US3288699A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B23H9/003—Making screw-threads or gears
    • 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
    • B23H9/10—Working turbine blades or nozzles
    • 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
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B23H1/04—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

Definitions

  • This invention relates to electrochemical shaping and machining, and more particularly to a method and apparatus for electrochemically or electrolytically removing material from selected portions of a workpiece so as to obtain finished articles of intricate contour such as, for example, gears, gear racks, 'broaches, turbine wheels with integral airfoil blades, bucket or vane rings, splined shafts or rings, and the like.
  • the process is often called electroplating in reverse because the electrochemical principles involved therein are the same principles permitting ionic transfer of metal or metall-oid elements from an anode to a cathode in an electroplating cell, the only difference being that in electro chemical shaping or machining, the metal or metalloid ions are prevented from plating upon the cathode by the rapidly moving electrolyte or by using an electrolyte composition which does not permit the metal or metalloid ions to remain in solution in the electrolyte.
  • Electrochemical machining has many applications where conventional machining would fail, would be difficult, or would provide unsatisfactory results because of the hardness or low machineability of the workpiece material, or where conventional machining would impose undue stresses or modfy the physical properties of the workpiece material or of the machined surfaces. Electrochemical machining often presents also many advantages over conventional machining in some applications, even though conventional machining is quite practical and commonly used, because electrochemical machining results in no tool wear, in simplified operations and in improved repeatability, accuracy, surface finish and affords considerable time saving over conventional machining. Also, electrochemical machining leads naturally to automated operations under the control of relatively unskilled workers.
  • the present invention relates to a method for electrochemically machining intricate workpieces made of electrically conductive material impossible or very difficult to machine by conventional means. Furthermore, even if the workpiece material was such as to be easily machineable by conventional means, electrochemical machining often results in considerable reduction of production costs and time over conventional methods. For example, a turbine wheel with sixty or more integral blades would require upward of twenty-four man-hours to be manufactured by conventional methods. The same turbine wheel manufactured by the method of the invention can be produced in twelve minutes.
  • the principal object of the invention is to provide a method for electrochemically machining intri- "ice cate workpieces at a considerable saving in time and cost as compared to old conventional methods of producing the same part.
  • Another object of the invention is to electrochemically machine intricate workpieces made of a material which could not be machined by conventional means such as milling, filing, grinding, etc., or made of a, material very difiicult to machine by such conventional means.
  • a further object of the invention is to electrochemically machine intricate parts without imposing undue mechanical or thermal stress upon the parts, in a manner that leads to high-productivity automatic or automated operations under the control of substantially unskilled labor, with high accuracy and extreme repeatability.
  • Another object of the invention is to provide a method of electrochemically machining intricate parts with a minimum of operations and setups.
  • FIGv l is a perspective view of an assembly for the purpose of practicing the electrochemical shaping method of the invention, with portions broken away for the sake of clarity;
  • FIG. 2 is a view of a portion of the assembly of FIG. I, seen from line 2-2 of FIG. 1;
  • FIGS. 3a to 3c are schematic representations of the relative positions of typical portions of the tool and workpiece during a machining cycle by means of the assembly of FIG. 1;
  • FIG. 4 is a perspective view of an assembly for the purpose of practicing a subsequent step in the electrochemical shaping method of the invention
  • FIG. 5 is a view of a portion of the assembly of FIG. 4, seen from line 5-5 of FIG. 4;
  • FIG. 6 is a perspective representation of the relative positions of the tool and workpiece during a machining cycle by means of the assembly of FIG. 4;
  • FIG. 7 is a perspective schematic representation of an alternate tool configuration
  • FIG. 8 is a sectional view through portions of a workpiece and of the tool according to FIG. 7, to illustrate the principle of operation of the tool of FIG. 7.
  • electro-mechanical shaping according to the principle of the invention is preferably effected in two steps: a roughing-out step and a finishing step, requiring a rough machining setup and a finish machining setup.
  • the finishing step may be performed in turn in two steps or it may be a one-step operation according to the type of tooling used in the finishing operation, as will hereinafter be explained in further details.
  • FIGS. 1 and 2 schematically represent an example of a setup assembly for practicing the rough machining step according to the invention
  • a disc-shaped electrically conductive turbine Wheel blank 10 integral with an axial shaft 11 is held in a holding fixture 12 comprising a stationary member 14 adapted to be mounted on the work holding table (not shown) of an electrochemical machine by means such as clamps coacting with flange 16.
  • a rotatable member 20 provided with .
  • a shoulder portion 22 adapted to bear against the end surface 24 of the stationary member 14, a thrust washer or bearing 26 being interposed between the shoulder portion 22 and the end surface 24.
  • the shaft 11 of the turbine wheel blank introduced within an axially disposed bore 28 in the rotatable member 20, is securedly clamped in position by way of clamping means such as bolt 30. It is evident that any other convenient means of holding and clamping a workpiece blank upon the rotatable member 20 of the holding fixture 12 may be used, according to the configuration, dimension and shape of the workpiece.
  • a roughing electrode tool 32 Positioned directly above, as seen in the drawing, and coaxial with the workpiece, there is a roughing electrode tool 32 which is mounted upon a tool holder platen 34 which, in turn, is attached to the end of the linearly movable ram portion 36 of the electrochemical machine (not shown).
  • the roughing electrode tool 32 consists of an electrically conductive cylindrical enclosure 38 having, on its end confronting the workpiece, an electrically conductive annular flange member 40.
  • the inner diameter surface of the annular flange member 40 is provided with a plurality of segments or teeth 42 for the purpose of machining corresponding slots on the peripheral surface of the workpiece as will be hereinafter explained.
  • An electric conductor 44 is attached to the electrode tool 32 and another electric conductor 46 is similarly attached to the rotatable shoulder portion 22 of the holding fixture 12.
  • a direct current source not shown, has its negative terminal connectable via conductor 44 to the electrode tool 32 and its positive terminal connected via conductor 46 to the rotatable shoulder portion 22 of the holding fixture for the purpose of rendering the workpiece, in electrical contact with the rotatable shoulder portion, anodic in relation to the electrode tool.
  • Electrolyte such as sodium chloride in solution in water at a concentration of grams to 200 grams per liter, is normally supplied to the interface or gap between the electrode tool and the workpiece by being pumped under pressure to the interior of the cylindrical enclosure 38 of the electrode tool 32 by means of at least one flexible tubing 48 connected to a fitting 50 in the cylindrical enclosure, and by flowing substantially radially along the upper face of the workpiece blank 10.
  • the machine table is provided with an enclosure, not shown, preventing excess splashing of the electrolyte, and appropriate outlets and plumbing are provided for returning the electrolyte to the electrolyte circulation and filtration system, not shown.
  • a bracket member 52 Projecting from the electrode tool 32 and fastened thereupon, a bracket member 52 carries a pin 54 adapted to engage a cam slot 56 disposed in a block 58 fastened to the rotatable portion 22 of the holding fixture 12.
  • the cam slot 56 has a predetermined contour which will cause the rotatable portion 22 of the workpiece holding fixture to rotate at a predetermined rate when the electrode tool 32 is vertically displaced, as shown in the drawing, in relation to the workpiece, the pin 54 being engaged into the cam slot 56, thereby causing the block 58 and the rotatable portion 22 of the workpiece holder to rotate according to the slope of the cam slot.
  • the bracket 52 is electrically insulated from the electrode tool 32, or the block 58 is insulated from the rotatable portion 20 of the workpiece holding fixture 12, in order I to prevent short circuiting the electrode tool and the workpiece.
  • the electrode tool is brought toward the workpiece 16 until the annular flange member 40 is in close proximity to the upper faw of the periphery of the workpiece 10, the pin 54 just entering the cam slot 56 in the block 58. Electrolyte flow is started and the power supply, not shown, is connected to the electrode tool and to the workpiece by means of the electrical cables 44 and 46.
  • the electrode tool is fed into the workpiece so as to cause the teeth active faces 43 of the tool annular flange member 50 to selectively erode material from the peripheral edge of the workpiece 10, resulting in a plurality of slots 60 being developed on the periphery of the workpiece 10, the electrolyte flowing, in the direction of the arrows, at high velocity and at substantially high pressure in the gap 41 which may be as narrow as a fraction of a thousandth of an inch or as wide as a few thousandths.
  • FIGS. 30, 3b and 3c schematically represent, respectively, the relative positons of the segments or teeth 42 of the electrode tool being fed into the periphery of the workpiece 10 at the beginning of the machining operation (FIG. 3a), at some intermediary stage :during the machining operation (FIG. 3b), and at the end of the machining operation (FIG. 30). Rough blade portions 6 2 are left intact between consecutive slots 60.
  • an insulating material may be used to coat the tips of the electrode tool segments or teeth 42 and the surfaces 45 situated between consecutive segments or teeth.
  • the workpiece 10 is fastened to the rotatable portion 66 of the holding fixture by way of clamping means such as, for example, a bolt or screw 68.
  • a finishing electrode tool 70 consisting of a cylindrical hollow enclosure or manifold 72 having an end plate 73 provided with a plurality of electrode segments 74 integral with said end plate or fastened thereto.
  • a bracket 76 provided with a pin 78, is fastened on the electrode tool 72, and the pin 78 is adapted to engage the cam slot 80 in a block 82 fastened to the rotatable portion 66 of the workpiece holding fixture 64.
  • the holding fixture 64 is provided with an electric cable 46
  • the electrode tool 70 is provided with an electric cable 44 and with at least one pipe 48 to introduce electrolyte to the inside :of the manifold 72.
  • the end plate 73 of the electrode tool is provided with electrolyte outlets 84 to distribute electrolyte in the appropriate interfaces between workpiece blade blanks 62 and the electrode segments 74 during the machining operation.
  • the electrode tool 70 is advanced toward the workpiece 10 until the electrode segments 74 are introduced in the slots 60 between consecutive blade blank-s 62, as shown in FIG. 6.
  • the electrolyte flow is started, the electrolyte being caused to flow at high velocity and under pressure from outlets 84 through the interface between surface 92 of the blade blanks 62 and the active face of each electrode segment 74, electric cables 44 and 46 are connected to the appropriate terminals of the power supply, and the rotatable portion 66 of the workpiece holding fixture 64 is rotated by any obvious means such as levers, cams, gears, hydraulic cylinders, etc., with the pin 78 engaging the bottom straight portion 86 of the cam slot 80 until the pin 78 abuts against the side 88 of the horizontal slot 86 (FIG. 5).
  • the active face 90 of each electrode segment 74 is thus caused to erode material from the corresponding surface 92 of each blade blank 62 (FIG. 6).
  • the other faces 94 and 96 of the electrode segments are coated with an insulating material to prevent electrolytic machining dissolution of material from the workpiece surface proximate thereto.
  • the other surfaces 98 of the blade blanks 62 are finish-machined by means of an electrode tool similar to electrode tool 70 but provided with electrode segments arranged to machine the surfaces 98 of the blade blanks, the pin 78, by engaging the end 100 of the straight portion 86 of the cam slot 80, limiting the amount of rotation of the workpiece in relation to the electrode tool.
  • a finishing tool having a plurality of electrode segment pair 106-108; as illustrated in FIGS. 7-8, may be used.
  • Such a finishing tool comprises a manifold 72 on the bottom end of which are mounted two metal discs 102 and 104 capa-ble of limited rotation one in relation to the other.
  • a plurality of first electrode segments 106 are integral with or fastened to the first disc 102 projecting through apertures 110 in the second disc.
  • a plurality of second electrode segments 108 are integral with or attached to the second disc 104.
  • Electrolyte outlets 112 allow electrolyte to flow from the interior of the manifold 72 along the faces 114 and 116 of the machining electrode seg ments 106 and 108, respectively.
  • the electrode tool is disposed in relation to the workpiece in such a manner that the pairs of electrode segments 106-108 are placed within the slots 60 between consecutive blade blanks 62, as shown in FIG. 8. Electrolyte flow is started, the workpiece and the electrode tool are connected to the appropriate terminals of the power supply, and discs 102 and 104 are rotated in opposite directions in relation to each other in such a way as to cause the active faces 114 and 116 of the electrode segments 106 and 108 to machine surfaces 98 and 92 respectively of the blade blanks 62, the workpiece being preferably held stationary.
  • abutments are provided for limiting the amount of relative rotation of discs 102 and 104, and such rotation may be imparted by any means obvious to those skilled in the art such as levers, cams, gears, hydraulic cylinders, electric motors and the like.
  • Apparatus for the electro-erosion of material from an electrically conductive cylindrical workpiece blank having a plurality of outwardly radially extending sections so as to obtain a plurality of substantially identically contoured sections integral with the cylindrical wall of said blank comprising: an electrically conductive electrode tool provided with a base, a plurality of circumferentially spaced integral segments having working surfaces and projecting from said base in the general configuration of a cylinder, said plurality of segments comprising at least one array of segments having their working surfaces facing in one direction of rotation; means for holding said electrically conductive electrode tool in close proximity to the workpiece blank in such a manner that said integral segments intersect spaces between said sections; means connecting said electrode tool in an electric circuit so as to render said tool predominantly cathodic; means connecting said blank in said electric circuit so as to render said' blank anodic; means for introducing a conductive electrolyte at substantially high velocity and high pressure between said working surfaces of said segments and said blank; means for moving said tool and said blank axially in relation to
  • the said plurality of segments include a second array of independently movable segments interposed between said first array of segments and having working surfaces facing in a direction of rotation opposite from said one direction of rotation.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US344374A 1964-02-12 1964-02-12 Apparatus for electrochemical shaping Expired - Lifetime US3288699A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US344374A US3288699A (en) 1964-02-12 1964-02-12 Apparatus for electrochemical shaping
DE19651540723 DE1540723A1 (de) 1964-02-12 1965-02-06 Verfahren zur Abnahme von Material an einem elektrisch leitenden Werkstueck und Einrichtung zur Durchfuehrung des Verfahrens
GB5955/65A GB1062343A (en) 1964-02-12 1965-02-11 Electrochemical shaping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US344374A US3288699A (en) 1964-02-12 1964-02-12 Apparatus for electrochemical shaping

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US3288699A true US3288699A (en) 1966-11-29

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DE (1) DE1540723A1 (de)
GB (1) GB1062343A (de)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393141A (en) * 1964-05-16 1968-07-16 Siemens Ag Tool for electrochemical contouring of workpieces
US3409521A (en) * 1965-04-22 1968-11-05 Pennsalt Chemicals Corp Method of manufacturing centrifuge discs by electrochemical machining
US3459645A (en) * 1964-12-23 1969-08-05 Rolls Royce Method of electrochemically machining a workpiece incrementally using a plurality of electrodes dimensional progressively closer to the desired configuration
US3467593A (en) * 1965-06-17 1969-09-16 Ass Eng Ltd Electrochemical deburring under pressure
US3492917A (en) * 1967-10-06 1970-02-03 Colonial Broach & Machine Co Broaching apparatus
US3499830A (en) * 1967-11-20 1970-03-10 Cincinnati Milling Machine Co Apparatus for electrochemically forming and finishing gears
US3515659A (en) * 1967-01-30 1970-06-02 Kelsey Hayes Co Apparatus for electro chemical machining
US3660628A (en) * 1969-09-18 1972-05-02 Ind Tool Engineering Co Electric arc machining apparatus for manufacturing dies and rolls
US3752950A (en) * 1971-03-15 1973-08-14 Astratronics Apparatus for slotting a clamping bushing by edm
US4657649A (en) * 1985-11-27 1987-04-14 Ex-Cell-O Corporation ECM machine with skewed workpart and pocketed cathodes
US4657645A (en) * 1985-11-27 1987-04-14 Ex-Cell-O Corporation ECM machine with workpart shroud and arbor assembly
US4663011A (en) * 1985-11-27 1987-05-05 Ex-Cello-O Corporation Multi-axis ECM machine useful for machining airfoils of rotors
US4684455A (en) * 1985-11-27 1987-08-04 Ex-Cell-O Corporation Electrical continuity clamp for ECM machine
US4686020A (en) * 1985-11-27 1987-08-11 Ex-Cell-O Corporation Method of electrochemical machining bladed rotors
US4705615A (en) * 1985-08-05 1987-11-10 Daimler-Benz Aktiengesellschaft Electrode arrangement for the electrochemical metal erosion process for producing a tooth system
US4735695A (en) * 1985-11-27 1988-04-05 Ex-Cell-O Corporation Electrolyte chamber with cathode sealing means for ECM machining
US4752366A (en) * 1985-11-12 1988-06-21 Ex-Cell-O Corporation Partially conductive cathode for electrochemical machining
US4756812A (en) * 1987-04-13 1988-07-12 Airfoil Textron Inc. Electrical connector and clamp mechanism for ECM workpart shaft
US4761214A (en) * 1985-11-27 1988-08-02 Airfoil Textron Inc. ECM machine with mechanisms for venting and clamping a workpart shroud
US4772368A (en) * 1985-08-08 1988-09-20 Werkzeugmaschinenfabrik Oerlikon Buhrle Ag Process for spark erosion or electrochemical machining of tapered gears of hypoid tooth profile or similar parts
US4797189A (en) * 1987-03-23 1989-01-10 Airfoil Textron Inc. Pressure balanced sealing pistons for cathodes in an electrolyte chamber
US5188514A (en) * 1989-11-03 1993-02-23 Varian Associates, Inc. Process for manufacturing an impeller by electrical discharge machining and articles so obtained
EP1211009A1 (de) 2000-11-30 2002-06-05 Nuovo Pignone Holding S.P.A. Herstellungsverfahren eines Laufrades für Kreiselverdichter
US6562227B2 (en) * 2001-07-31 2003-05-13 General Electric Company Plunge electromachining
US20050161132A1 (en) * 2004-01-27 2005-07-28 Gillette Edward J. Method and apparatus for case hardening a work piece
US20060085979A1 (en) * 2004-10-26 2006-04-27 Mtu Aero Engines Gmbh Method and device for manufacturing integrally bladed rotors
US20070039178A1 (en) * 2003-02-26 2007-02-22 Bladon Christopher G Fans and turbines
US20120213639A1 (en) * 2009-10-02 2012-08-23 Bladon Jets Holdings Limited Rotary structures
FR3006925A1 (fr) * 2013-06-17 2014-12-19 Snecma Procede de realisation d'alveoles d'un disque de turbomachine
WO2016023865A1 (de) * 2014-08-13 2016-02-18 pEMTec SNC Vorrichtung und verfahren zur elektrochemischen bearbeitung im umriss rotationssymmetrischer werkstücke
WO2017060651A1 (fr) * 2015-10-07 2017-04-13 Safran Aircraft Engines Outillage pour l'usinage d'alveoles de disques multi-etages par pecm, ensemble et machine d'usinage electrochimique comportant cet outillage, et procede utilisant cet outillage.
EP3225342A1 (de) * 2016-03-30 2017-10-04 General Electric Company Verfahren und vorrichtung zur bearbeitung von werkstücken
CN112739482A (zh) * 2018-08-31 2021-04-30 赛峰航空器发动机 通过pecm加工圆盘凸缘的加工装饰和连接孔的工具以及使用该工具的方法
US20220032384A1 (en) * 2018-05-02 2022-02-03 MTU Aero Engines AG Method for producing a plate of a turbomachine
US20220274195A1 (en) * 2019-07-23 2022-09-01 MTU Aero Engines AG Method and apparatus for machining components by means of electrochemical machining

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0247022A3 (de) * 1986-04-23 1989-01-18 VOEST-ALPINE Werkzeuge und Präzisionstechnik Gesellschaft m.b.H. Verfahren zum elektrochemischen Senken von spanabhebenden Werkzeugen aus Schnellarbeitsstählen und Hartmetallen
DE102005014642A1 (de) * 2005-03-31 2006-10-05 Leybold Vacuum Gmbh Funkenerosionsanlage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282193A (en) * 1937-05-08 1942-05-05 Gear Proc Inc Method and apparatus for cutting gears
US2654821A (en) * 1948-07-15 1953-10-06 Warner Swasey Co Hot machining of metals
US2674924A (en) * 1949-10-06 1954-04-13 Illinois Tool Works Die mechanism
US2902584A (en) * 1955-12-30 1959-09-01 Agie Ag Ind Elektronik Method of detaching material by electric erosion
US2938104A (en) * 1958-02-14 1960-05-24 Polymecanique Method of machining tools, tool equipment for operating this or similar methods and tool according to those obtained
US3051638A (en) * 1959-03-12 1962-08-28 United States Steel Corp Method and apparatus for making a tapered thread

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282193A (en) * 1937-05-08 1942-05-05 Gear Proc Inc Method and apparatus for cutting gears
US2654821A (en) * 1948-07-15 1953-10-06 Warner Swasey Co Hot machining of metals
US2674924A (en) * 1949-10-06 1954-04-13 Illinois Tool Works Die mechanism
US2902584A (en) * 1955-12-30 1959-09-01 Agie Ag Ind Elektronik Method of detaching material by electric erosion
US2938104A (en) * 1958-02-14 1960-05-24 Polymecanique Method of machining tools, tool equipment for operating this or similar methods and tool according to those obtained
US3051638A (en) * 1959-03-12 1962-08-28 United States Steel Corp Method and apparatus for making a tapered thread

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393141A (en) * 1964-05-16 1968-07-16 Siemens Ag Tool for electrochemical contouring of workpieces
US3459645A (en) * 1964-12-23 1969-08-05 Rolls Royce Method of electrochemically machining a workpiece incrementally using a plurality of electrodes dimensional progressively closer to the desired configuration
US3409521A (en) * 1965-04-22 1968-11-05 Pennsalt Chemicals Corp Method of manufacturing centrifuge discs by electrochemical machining
US3467593A (en) * 1965-06-17 1969-09-16 Ass Eng Ltd Electrochemical deburring under pressure
US3515659A (en) * 1967-01-30 1970-06-02 Kelsey Hayes Co Apparatus for electro chemical machining
US3492917A (en) * 1967-10-06 1970-02-03 Colonial Broach & Machine Co Broaching apparatus
US3499830A (en) * 1967-11-20 1970-03-10 Cincinnati Milling Machine Co Apparatus for electrochemically forming and finishing gears
US3660628A (en) * 1969-09-18 1972-05-02 Ind Tool Engineering Co Electric arc machining apparatus for manufacturing dies and rolls
US3752950A (en) * 1971-03-15 1973-08-14 Astratronics Apparatus for slotting a clamping bushing by edm
US4705615A (en) * 1985-08-05 1987-11-10 Daimler-Benz Aktiengesellschaft Electrode arrangement for the electrochemical metal erosion process for producing a tooth system
US4772368A (en) * 1985-08-08 1988-09-20 Werkzeugmaschinenfabrik Oerlikon Buhrle Ag Process for spark erosion or electrochemical machining of tapered gears of hypoid tooth profile or similar parts
US4752366A (en) * 1985-11-12 1988-06-21 Ex-Cell-O Corporation Partially conductive cathode for electrochemical machining
US4657645A (en) * 1985-11-27 1987-04-14 Ex-Cell-O Corporation ECM machine with workpart shroud and arbor assembly
US4663011A (en) * 1985-11-27 1987-05-05 Ex-Cello-O Corporation Multi-axis ECM machine useful for machining airfoils of rotors
US4684455A (en) * 1985-11-27 1987-08-04 Ex-Cell-O Corporation Electrical continuity clamp for ECM machine
US4686020A (en) * 1985-11-27 1987-08-11 Ex-Cell-O Corporation Method of electrochemical machining bladed rotors
US4657649A (en) * 1985-11-27 1987-04-14 Ex-Cell-O Corporation ECM machine with skewed workpart and pocketed cathodes
US4735695A (en) * 1985-11-27 1988-04-05 Ex-Cell-O Corporation Electrolyte chamber with cathode sealing means for ECM machining
US4761214A (en) * 1985-11-27 1988-08-02 Airfoil Textron Inc. ECM machine with mechanisms for venting and clamping a workpart shroud
US4797189A (en) * 1987-03-23 1989-01-10 Airfoil Textron Inc. Pressure balanced sealing pistons for cathodes in an electrolyte chamber
EP0401882A2 (de) 1987-03-23 1990-12-12 Airfoil Textron Inc. Elektrochemische Bearbeitungsmaschine mit Mechanismen zur Entlüftung und Einspannung einer Werkstückhülle
US4756812A (en) * 1987-04-13 1988-07-12 Airfoil Textron Inc. Electrical connector and clamp mechanism for ECM workpart shaft
US5188514A (en) * 1989-11-03 1993-02-23 Varian Associates, Inc. Process for manufacturing an impeller by electrical discharge machining and articles so obtained
EP1211009A1 (de) 2000-11-30 2002-06-05 Nuovo Pignone Holding S.P.A. Herstellungsverfahren eines Laufrades für Kreiselverdichter
US6562227B2 (en) * 2001-07-31 2003-05-13 General Electric Company Plunge electromachining
US20070039178A1 (en) * 2003-02-26 2007-02-22 Bladon Christopher G Fans and turbines
US8127444B2 (en) 2003-02-26 2012-03-06 Christopher George Bladon Fans and turbines
US20050161132A1 (en) * 2004-01-27 2005-07-28 Gillette Edward J. Method and apparatus for case hardening a work piece
US20060085979A1 (en) * 2004-10-26 2006-04-27 Mtu Aero Engines Gmbh Method and device for manufacturing integrally bladed rotors
US8187451B2 (en) 2004-10-26 2012-05-29 Mtu Aero Engines Gmbh Method and device for manufacturing integrally bladed rotors
EP1652611A3 (de) * 2004-10-26 2006-07-12 MTU Aero Engines GmbH Verfahren und Vorrichtung zur Herstellung integral beschaufelter Rotoren
US20120213639A1 (en) * 2009-10-02 2012-08-23 Bladon Jets Holdings Limited Rotary structures
CN105358280B (zh) * 2013-06-17 2018-10-12 赛峰航空器发动机 用于制造涡轮机盘的腔体的方法
FR3006925A1 (fr) * 2013-06-17 2014-12-19 Snecma Procede de realisation d'alveoles d'un disque de turbomachine
WO2014202862A1 (fr) * 2013-06-17 2014-12-24 Snecma Procede de realisation d'alveoles d'un disque de turbomachine
CN105358280A (zh) * 2013-06-17 2016-02-24 斯奈克玛 用于制造涡轮机盘的腔体的方法
JP2016528049A (ja) * 2013-06-17 2016-09-15 スネクマ ターボ機械ディスク用の空洞を形成する方法
US10399168B2 (en) 2013-06-17 2019-09-03 Safran Aircraft Engines Method for producing cavities for a turbomachine disk
RU2674791C2 (ru) * 2013-06-17 2018-12-13 Сафран Эркрафт Энджинз Способ выполнения выемок в диске турбомашины
WO2016023865A1 (de) * 2014-08-13 2016-02-18 pEMTec SNC Vorrichtung und verfahren zur elektrochemischen bearbeitung im umriss rotationssymmetrischer werkstücke
US10507540B2 (en) 2015-10-07 2019-12-17 Safran Aircraft Engines Tool for machining wells in multi-stage discs by PECM, electrochemical machining assembly and machine including said tool, and method using said tool
CN108430683A (zh) * 2015-10-07 2018-08-21 赛峰航空器发动机 在多级盘中用pecm加工槽的工具、包括该工具的电化学加工组件和机器以及该工具的使用方法
FR3042138A1 (fr) * 2015-10-07 2017-04-14 Snecma Outillage pour l'usinage d'alveoles de disques multi-etages par pecm, ensemble et machine d'usinage electrochimique comportant cet outillage, et procede utilisant cet outillage
WO2017060651A1 (fr) * 2015-10-07 2017-04-13 Safran Aircraft Engines Outillage pour l'usinage d'alveoles de disques multi-etages par pecm, ensemble et machine d'usinage electrochimique comportant cet outillage, et procede utilisant cet outillage.
RU2726533C2 (ru) * 2015-10-07 2020-07-14 Сафран Эркрафт Энджинз Инструмент для выполнения пазов многоступенчатых дисков методом ресм, узел и машина для электрохимической обработки, содержащие этот инструмент, и способ с использованием этого инструмента
EP3225342A1 (de) * 2016-03-30 2017-10-04 General Electric Company Verfahren und vorrichtung zur bearbeitung von werkstücken
US10661368B2 (en) 2016-03-30 2020-05-26 General Electric Company Method and apparatus for machining workpiece
US20220032384A1 (en) * 2018-05-02 2022-02-03 MTU Aero Engines AG Method for producing a plate of a turbomachine
US12447544B2 (en) * 2018-05-02 2025-10-21 MTU Aero Engines AG Method for producing a plate of a turbomachine
CN112739482A (zh) * 2018-08-31 2021-04-30 赛峰航空器发动机 通过pecm加工圆盘凸缘的加工装饰和连接孔的工具以及使用该工具的方法
US20220274195A1 (en) * 2019-07-23 2022-09-01 MTU Aero Engines AG Method and apparatus for machining components by means of electrochemical machining
US12240050B2 (en) * 2019-07-23 2025-03-04 MTU Aero Engines AG Method and apparatus for machining components by means of electrochemical machining

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GB1062343A (en) 1967-03-22
DE1540723A1 (de) 1970-01-22

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