GB1062343A - Electrochemical shaping - Google Patents

Electrochemical shaping

Info

Publication number
GB1062343A
GB1062343A GB5955/65A GB595565A GB1062343A GB 1062343 A GB1062343 A GB 1062343A GB 5955/65 A GB5955/65 A GB 5955/65A GB 595565 A GB595565 A GB 595565A GB 1062343 A GB1062343 A GB 1062343A
Authority
GB
United Kingdom
Prior art keywords
electrode
workpiece
tool
machining
slots
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
Application number
GB5955/65A
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
Priority to US344374A priority Critical patent/US3288699A/en
Application filed by Ex-Cell-O Corp filed Critical Ex-Cell-O Corp
Publication of GB1062343A publication Critical patent/GB1062343A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H9/00Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/003Making screw-threads or gears
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H9/00Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/10Working turbine blades or nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H1/00Electrical 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
    • B23H1/04Electrodes specially adapted therefor or their manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H3/00Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • B23H3/04Electrodes specially adapted therefor or their manufacture

Abstract

A process for electro-erosion of material from an electrically conductive workpiece e.g. to produce a turbine wheel, comprises a first machining operation in which, in this instance, a turbine wheel blank 10 is brought into contact with an electrode tool 32 which moves progressively towards the workpiece 10, whilst the workpiece 10 is rotated in a prearranged manner as by means of a system comprising a cam slot 56 in block <PICT:1062343/C6-C7/1> 58 attached to the workpiece holder 22 and a pin 54 attached by a bracket 52 to the electrode tool 32, the teeth 42 of the electrode tool electrolytically machining corresponding slots in the peripheral edge of the workpiece 10, the shape of the slots depending on the shape of the electrode tool and upon the movement of workpiece and tool relative to one another, as defined by the cam mechanism. This rough shaping operation may then be followed by a second machining operation using a similar type apparatus, in which the electrode tool has a plurality of electrode segments or projections 74 integral therewith which will, on bringing the electrode tool progressively towards the workpiece, enter the slots formed therein by the first machining operation. Subsequent rotation of the workpiece, controlled by a cam mechanism similar to that described above then brings the electrode segments into contact with the side faces of the corresponding teeth 62 of the workpiece, formed by the slots 60 cut therein, thus machining said teeth to a desired shape, in accordance with shape of the electrode tool segments and the relative motion of workpiece and tool. This second machining may comprise the consecutive use of two different electrode tools, machining one side of the workpiece teeth with one tool, and the other side with a second tool, each tool being shaped in the required manner. Alternatively a single electrode tool Fig. 7 (not shown) may be used in which two electrode segments pass into each slot in the workpiece, the first electrode segment of each pair being mounted upon one disc and the second electrode segment of each pair being mounted upon a second disc, one disc positioned above the other in such manner that they may be rotated relative to one another, thereby bringing each electrode segment into contact with the side of the adjacent workpiece tooth simultaneously. Electrolyte is introduced into the electrode tool 32 via the tube 48 and in the case of the second electrode passes to the workfaces via the slots 84. Electric conductors 44 and 46 are connected to electrode tool and workpiece holder respectively.
GB5955/65A 1964-02-12 1965-02-11 Electrochemical shaping Expired GB1062343A (en)

Priority Applications (1)

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

Publications (1)

Publication Number Publication Date
GB1062343A true GB1062343A (en) 1967-03-22

Family

ID=23350275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5955/65A Expired GB1062343A (en) 1964-02-12 1965-02-11 Electrochemical shaping

Country Status (3)

Country Link
US (1) US3288699A (en)
DE (1) DE1540723A1 (en)
GB (1) GB1062343A (en)

Families Citing this family (34)

* 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
GB1135571A (en) * 1964-12-23 1968-12-04 Rolls Royce Electrochemical machining
US3409521A (en) * 1965-04-22 1968-11-05 Pennsalt Chemicals Corp Method of manufacturing centrifuge discs by electrochemical machining
GB1156201A (en) * 1965-06-17 1969-06-25 Ass Eng Ltd Improvements in Electrochemical Machining
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
DE3528056C1 (en) * 1985-08-05 1986-10-16 Daimler Benz Ag Electrode arrangement for the electrochemical metal removal process (ECM process) for producing a toothing
JPS63500442A (en) * 1985-08-08 1988-02-18
US4752366A (en) * 1985-11-12 1988-06-21 Ex-Cell-O Corporation Partially conductive cathode for electrochemical machining
US4663011A (en) * 1985-11-27 1987-05-05 Ex-Cello-O Corporation Multi-axis ECM machine useful for machining airfoils of rotors
US4686020A (en) * 1985-11-27 1987-08-11 Ex-Cell-O Corporation Method of electrochemical machining bladed rotors
US4761214A (en) 1985-11-27 1988-08-02 Airfoil Textron Inc. ECM machine with mechanisms for venting and clamping a workpart shroud
US4684455A (en) * 1985-11-27 1987-08-04 Ex-Cell-O Corporation Electrical continuity clamp for ECM machine
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
EP0227223B1 (en) * 1985-11-27 1991-09-25 Ex-Cell-O Corporation Electrolyte chamber with cathode sealing means for ecm machining
EP0247022A3 (en) * 1986-04-23 1989-01-18 VOEST-ALPINE Werkzeuge und Präzisionstechnik Gesellschaft m.b.H. Process for electrochemically machining cutting tools made from high-speed steel or hard metals
US4797189A (en) * 1987-03-23 1989-01-10 Airfoil Textron Inc. Pressure balanced sealing pistons for cathodes in an electrolyte chamber
US4756812A (en) * 1987-04-13 1988-07-12 Airfoil Textron Inc. Electrical connector and clamp mechanism for ECM workpart shaft
IT1238201B (en) * 1989-11-03 1993-07-09 Varian Spa Method of manufacturing by electroerosion of an impeller or of a rotor with one or more impellers of a turbopump, particularly of a turbomolecular pump, and products thus obtained.
IT1319495B1 (en) 2000-11-30 2003-10-20 Nuovo Pignone Spa Procedure for the construction of a rotor for centrifugal compressors.
US6562227B2 (en) * 2001-07-31 2003-05-13 General Electric Company Plunge electromachining
GB0304321D0 (en) * 2003-02-26 2003-04-02 Bladon Jets Ltd Fans and turbines
US20050161132A1 (en) * 2004-01-27 2005-07-28 Gillette Edward J. Method and apparatus for case hardening a work piece
DE102004051854A1 (en) * 2004-10-26 2006-04-27 Daimlerchrysler Ag Method and device for producing integrally bladed rotors
DE102005014642A1 (en) * 2005-03-31 2006-10-05 Leybold Vacuum Gmbh Electrodischarge machining device in particular for creation of rotor disk for turbomolecular pump comprising tool designed as triangular loop
GB0917317D0 (en) * 2009-10-02 2009-11-18 Bladon Jets Ltd Rotary structures
FR3006925B1 (en) * 2013-06-17 2016-01-15 Snecma METHOD FOR PRODUCING ALVEOLS OF A TURBOMACHINE DISK
DE102014111542A1 (en) * 2014-08-13 2016-02-18 pEMTec SNC Apparatus and method for electrochemical machining in the outline of rotationally symmetrical workpieces
FR3042138B1 (en) * 2015-10-07 2018-05-25 Pemtec TOOLING FOR THE MACHINING OF MULTI-STAGE DISKS WITH PECM, ASSEMBLY AND ELECTROCHEMICAL MACHINING MACHINE COMPRISING THE TOOLS, AND METHOD USING THE TOOLS
CN107283008A (en) * 2016-03-30 2017-10-24 通用电气公司 Electric discharge machining apparatus and the method being processed using electrode assemblie to workpiece

Family Cites Families (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
NL93457C (en) * 1955-12-30
FR1185171A (en) * 1958-02-14 1959-07-30 Polymecanique Process for machining tools, tools for implementing this process or similar processes and tools conforming to those obtained
US3051638A (en) * 1959-03-12 1962-08-28 United States Steel Corp Method and apparatus for making a tapered thread

Also Published As

Publication number Publication date
US3288699A (en) 1966-11-29
DE1540723A1 (en) 1970-01-22

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