| Patents for B23H 7 - Processes or apparatus applicable to both electrical discharge machining and electrochemical machining (7,069) |
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| 05/15/1991 | EP0426870A1 Jump control system of electric spark machine |
| 05/14/1991 | US5015814 Core removing device for wirecut electrical discharge machining apparatus |
| 05/07/1991 | US5013881 Wire-extension end detector |
| 05/02/1991 | EP0424603A1 Wire guides for travelling wire type apparatus |
| 05/02/1991 | EP0246333B1 Electric discharge wire cutting methods and apparatus therefor |
| 05/02/1991 | EP0211085B1 Wire-cutting electric discharge processing method and apparatus |
| 05/01/1991 | CN2076000U Apparatus for working taper by quick travel wire cutting machine tool |
| 04/30/1991 | US5012063 Taper machining device in wire-cut electrical discharge apparatus |
| 04/18/1991 | WO1991004823A1 Wire tension control device |
| 04/18/1991 | WO1991004822A1 Wire guide assembly of electric discharge machine |
| 04/18/1991 | WO1991004821A1 Machining condition setting method for wire cut discharge machine |
| 04/17/1991 | EP0422248A1 Method of predicting short-circuiting in electrolytic machining |
| 04/17/1991 | EP0422095A1 Method and apparatus for generating multiple sparks for an electrical discharge wire cutting machine |
| 04/17/1991 | EP0217957B1 Wire-cutting electric discharge processing apparatus and method of controlling same |
| 04/16/1991 | US5008509 Production method of honeycomb die-forming electrical discharge machining electrodes and production method of honeycomb dies |
| 04/09/1991 | US5006693 Gap voltage detector in a wire-cut electric discharge machine |
| 04/09/1991 | US5006692 Wire electrode supplying device for use in a wire cut electric discharge machining apparatus |
| 04/09/1991 | US5006691 Wire cut electric discharge machine |
| 04/04/1991 | WO1991004121A1 Nc data preparation method for coreless machining in wire cut discharge machining |
| 04/03/1991 | EP0246332B1 Wire guide for electric discharge wire cutting |
| 04/02/1991 | US5004883 Method of fabricating plural shaped parts from a workpiece |
| 04/02/1991 | US5004530 Discharge machining apparatus with liquid flow control |
| 03/26/1991 | US5003148 Method of threading electrode through EDM guide |
| 03/26/1991 | US5003147 Method of measuring wire guide spans and directing wire electrode perpendicularly to reference machining plane in electrical-discharge wire cutting machine |
| 03/26/1991 | US5002643 Electrode with outside flow of electrolyte for electrochemical machining and method |
| 03/20/1991 | EP0417289A1 Electric discharge machine equipped with control information display function |
| 03/20/1991 | EP0417234A1 Tool-holder and high-speed spindle |
| 03/20/1991 | EP0347417B1 Process for the production of moulds for producing replacement tooth parts |
| 03/19/1991 | US5001321 Wire electrode supplying device for use in a wire cut electric discharge machining apparatus |
| 03/13/1991 | EP0416541A1 Electrode for electric discharge machining |
| 03/12/1991 | US4999473 Automatic wire threading method |
| 03/07/1991 | WO1991002617A1 Method of repairing broken wire on wire cut electric spark machine |
| 03/06/1991 | EP0415501A1 Multilayer wire electrode |
| 03/05/1991 | US4998003 Electrical discharge wire-cutting machine |
| 02/27/1991 | EP0413889A1 Wire-type electrical discharge machining method and apparatus |
| 02/26/1991 | US4996406 Core retaining apparatus for wire-cut electro-discharge machine |
| 02/21/1991 | WO1991001840A1 Pulse controller of electric discharge machine |
| 02/20/1991 | CN1049305A Electrochemical machining apparatus for compromise face |
| 02/19/1991 | US4994643 Electrical discharge machine apparatus tilted current pickup |
| 02/12/1991 | US4992641 Apparatus for preparing a machining liquid of an electroerosion machine |
| 02/12/1991 | US4992640 Wire electric discharge machining apparatus |
| 02/05/1991 | US4990738 Wire electrode feeding device in wire cut electric discharge machine |
| 02/05/1991 | US4990737 Initial hole machining device for a wire-cut electric discharge machine |
| 01/31/1991 | DE3924398A1 DC supply unit with fast response and freedom from transients - uses pulse width control of multiple DC sources connected in series and smoothed |
| 01/30/1991 | EP0410493A1 Wire-cut spark erosion machine with a fixed machining table |
| 01/29/1991 | US4988552 Electrical discharge machining electrode |
| 01/24/1991 | WO1991000791A1 Device, standard blanks and standardized electrodes for milling by electroerosion |
| 01/24/1991 | DE3923261A1 Wire feed arrangement for wire erosion machine - has controlled position direction changing roller compensating wire tension variations |
| 01/16/1991 | EP0407600A1 Working liquid feeding apparatus for wire cut electric discharge machine |
| 01/16/1991 | EP0407593A1 Electrical discharge machine |
| 01/15/1991 | US4985608 Method of positioning a wire electrode and a workpiece relative to each other in a wire cut electric discharge machine |
| 01/10/1991 | WO1991000161A1 Wire cut electric discharge machining method |
| 01/10/1991 | WO1991000160A1 Wire cut electric discharge machining device |
| 01/09/1991 | EP0406918A2 Method and apparatus for electric discharge machining |
| 01/09/1991 | EP0406429A1 Automatic wire connecting method |
| 01/09/1991 | CN1048344A Apparatus for clamping workpieces which have to be machined by a machine tool |
| 01/08/1991 | US4983802 Drawing system in a wire-cut electrodischarge machine |
| 01/08/1991 | US4983800 Interelectrode distance controlling device in electric discharge machining apparatus |
| 01/08/1991 | US4983078 Rotary cutting tool |
| 01/02/1991 | CN1011033B Cutting means for cutting strip-like or wire electrode removed from electroerosion machine |
| 12/27/1990 | EP0254741B1 Device for retaining and handling a flat object |
| 12/26/1990 | CN1010926B Method for controlling withdrawal movement of countersink electrode in electroerosion machine |
| 12/26/1990 | CN1010925B Wire guidance arrangement for guiding a wire electrode of a spark erosion machine |
| 12/26/1990 | CN1010924B Apparatus for securing waste fregments on a spark erosion machine |
| 12/25/1990 | US4980533 Method and apparatus for electroerosive cutting |
| 12/25/1990 | US4980532 Machining time estimating device for electric discharge machining operation |
| 12/25/1990 | US4980531 Prehesive device for the electrode wire of an EDM cutting machine |
| 12/25/1990 | US4980036 Ultrasonic machining method |
| 12/19/1990 | EP0403427A2 Clamping device for workpieces destined to be processed on a machine-tool |
| 12/19/1990 | EP0402840A1 Method and apparatus for non-contact machining with dynamic feedback control |
| 12/18/1990 | US4978828 Device and method for confirming that a wire electrode for a wire cutting discharge machine has penetrated a wire guide section on a wire take-out side |
| 12/18/1990 | CA1277998C Process for preparing a building and/or construction material a polymer modified aqueous dispersion, and use thereof for the preparation of a building and/or construction material |
| 12/13/1990 | WO1990014917A1 Generator for the spark-erosion cutting of metal workpieces by means of a liquid or solid electrode |
| 12/12/1990 | EP0401415A1 Power supply for the spark erosion cutting of metal work pieces by means of an electrode made of liquid or solid material |
| 12/11/1990 | US4977396 Machining parameter selective setting display apparatus for electroerosion machines |
| 12/11/1990 | US4977303 Coating, heating, diffusion |
| 12/05/1990 | EP0400561A1 Wire electrode for electrodischarge machining |
| 12/05/1990 | CN1047464A Electrode filament centre of gyration detecting and adjusting method |
| 12/04/1990 | US4975557 Wire cutting electric discharge machine with nozzle collision detection |
| 11/29/1990 | WO1990014193A1 Jump control system of electric spark machine |
| 11/28/1990 | EP0128958B1 Electric power supply apparatus for wire-cut spark erosion machine |
| 11/27/1990 | US4973812 Wire electrodischarge machine |
| 11/27/1990 | CA1277009C Method and apparatus for electric discharge machining with adaptive feedback for dimensional control |
| 11/22/1990 | EP0398571A1 Multi-disc cutter and method of manufacture |
| 11/21/1990 | CN1010465B Power supply means for wire electrode of electrocorrosion machine |
| 11/20/1990 | US4972326 Method and apparatus for recording a flaw in a fabric web |
| 11/14/1990 | EP0397187A1 Current supply device for an electro-erosion machine |
| 11/14/1990 | EP0396759A1 Wire-cut electrical discharge machining apparatus |
| 11/13/1990 | US4970363 Method of and apparatus for detecting working conditions for a wire electric discharge machine |
| 11/13/1990 | US4970362 Wire-cutting electric discharge machining device |
| 11/07/1990 | CN1010291B Circuit arrangement for producing eroding pulses on spark erosion installation |
| 11/06/1990 | US4968867 High strength |
| 11/01/1990 | WO1990012671A1 Wire electric discharge machining method |
| 10/31/1990 | EP0394482A1 Working fluid temperature abnormality alarm apparatus of electric discharge machine |
| 10/31/1990 | CN2064697U Adjustable, constant tension, and limited vibration filament support with fast feeding and linear cutting |
| 10/24/1990 | EP0393202A1 Process liquid circulation apparatus |
| 10/24/1990 | EP0393193A1 Wire electrode guide apparatus for wire cut electric discharge machine |
| 10/24/1990 | EP0393192A1 Device for electrochemical treatment of articles |
| 10/23/1990 | US4965428 Wire electrical discharge machining apparatus |
| 10/18/1990 | WO1990011863A1 Method of predicting short-circuiting in electrolytic machining |