| Patents for B23H 1 - 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 (3,662) |
|---|
| 10/25/1994 | CA2020816C Power supply circuit for discharge machining |
| 10/18/1994 | US5357073 Electrical discharge machine |
| 10/13/1994 | WO1994022627A1 Electrical discharge machining device |
| 10/04/1994 | US5352859 Adaptive method and apparatus for controlling machining current in electric discharge machines |
| 09/29/1994 | DE4309719A1 Device for the disposal of dust in the manufacture of electrodes for spark erosion |
| 09/28/1994 | CN1025988C A power supply circuit for discharge machining |
| 09/21/1994 | CN1092345A Pulse width modulating electric spark working pulse power source |
| 09/20/1994 | US5349149 Dual-purpose fluid for cutting and electrical discharge machining |
| 09/06/1994 | US5345053 Method and apparatus for supplying power for electric discharge machining |
| 09/06/1994 | US5345052 Tool making |
| 08/18/1994 | WO1994017948A1 Method and apparatus for discharge machining control |
| 08/17/1994 | CN2174283Y Non industrial frequency transformer spark processing machine tool kickback type of supply |
| 08/10/1994 | CN1025595C Electric machining installation |
| 08/09/1994 | US5336864 Pulses generator for electrodischarge machining |
| 08/09/1994 | US5336863 Method of, and an apparatus for, electrical-discharge machining |
| 07/28/1994 | DE4339191A1 Energy supply control to an electric discharge machine |
| 07/27/1994 | EP0476155B1 Liquid level regulator of discharge machining tank |
| 07/26/1994 | US5332529 Dielectric fluids and electrodes |
| 07/20/1994 | EP0606494A1 Method and apparatus for electrical discharge machining |
| 07/13/1994 | EP0426870B1 Jump control system of electric spark machine |
| 07/13/1994 | CN1089198A Electric discharge machining fluid |
| 07/12/1994 | US5329088 Electrical discharge power supply circuit |
| 06/30/1994 | DE4244004A1 Measuring the internal stress in a component |
| 06/28/1994 | US5324908 Method of canceling a short circuit in a wire cut electric discharge machine |
| 06/22/1994 | CN1088142A Generating electrospark precision machining equipment |
| 06/22/1994 | CN1088141A New technique for machining precision plane and spherical surface with electric spark |
| 05/31/1994 | US5317122 Discharge-processing electric power-source assembly |
| 05/25/1994 | CN2165949Y Improved structure of rotation chief axis for electrical discharge processing machine |
| 05/24/1994 | US5315088 Electric discharge machining apparatus with switch connection between workpiece and mount |
| 05/24/1994 | US5315087 Wirecut electrical discharge machine utilizing silicon powder suspended in a dielectric material |
| 05/11/1994 | EP0596660A1 An electric discharge machining fluid |
| 04/28/1994 | DE4335987A1 Flushing device for electro-erosion machine - connects with dielectric fluid source through conduit in workpiece holder |
| 04/20/1994 | EP0447558B1 Oil composition |
| 03/29/1994 | US5298709 Power supply system for electric discharge machines |
| 03/29/1994 | US5298161 Apparatus for cleaning the working liquid of an EDM or ECM machine |
| 03/24/1994 | DE4231652A1 Mfr of electrode units, for spark erosion processes - with electrodes dipped into molten metal in crucibles with attached electrode holders |
| 03/23/1994 | EP0587691A1 Electric spark discharge machine |
| 03/15/1994 | CA1327787C Oil composition containing hydrogenated oil |
| 03/02/1994 | CN2157847Y Gas-tight rotary clamping fixture |
| 02/22/1994 | CA1327157C Eroding electrode, in particular a wire electrode for the spark-erosive working |
| 02/17/1994 | WO1994003299A1 Method and apparatus for electrical discharge machining |
| 02/08/1994 | CA1326882C Power supply system for electrolytic processing apparatus |
| 01/25/1994 | US5281788 Electroerosion boring apparatus |
| 01/18/1994 | US5280153 Method of and apparatus for pulse generator for electric discharge machining |
| 01/05/1994 | EP0576679A1 Wirecut electrical discharge machining apparatus |
| 01/04/1994 | US5276301 Wire electric discharge machine having function for counting number of discharge times |
| 12/29/1993 | CN1079926A Method and apparatus for the electric discharge machining of cutting tips |
| 12/09/1993 | WO1993024265A1 Insulation tester for wire cut electrical discharging machine |
| 12/08/1993 | EP0572717A1 Pulse generator for electroerosion machining |
| 11/30/1993 | US5267141 Machining unit application control apparatus and method employing data from several different operations |
| 11/23/1993 | US5264676 Electric discharge machining apparatus with a vertically movable tank |
| 11/17/1993 | CN2146330Y Gear conjugate electric spark running-in device |
| 11/16/1993 | US5262805 Drive circuits for spark-discharge imaging apparatus |
| 11/11/1993 | WO1993022094A1 Method of ion exchange treatment in the production and regeneration of aqueous electrical discharge machining fluid |
| 10/27/1993 | CN1022582C Method and apparatus for machining sieve plate |
| 10/20/1993 | EP0417289B1 Electric discharge machine equipped with control information display function |
| 10/19/1993 | US5254827 Chip removing device of electro-discharge machine |
| 10/19/1993 | US5254826 Contact detecting device for positioning relatively movable elements |
| 10/06/1993 | CN2143155Y Spark machine |
| 09/28/1993 | US5248867 Electric spark machine |
| 09/22/1993 | CN1076395A Capacitance current-limiting type impulse power supply |
| 09/14/1993 | US5245152 Dielectric fluid dust extraction system for electric discharge machine |
| 09/08/1993 | EP0558757A1 Method of correcting short-circuiting in wire-cut electrical discharge machine |
| 09/07/1993 | US5243168 Electric discharge machine |
| 08/11/1993 | EP0554899A1 Electrical discharge machine with secondary electrode for corrosion prevention |
| 08/11/1993 | EP0407600B1 Working liquid feeding apparatus for wire cut electric discharge machine |
| 08/05/1993 | DE4302404A1 Current supply set for spark erosion machine with constant current supply - has first switching element and part which interrupts output current and second switching element which regulates AC power output to machining gap |
| 08/03/1993 | US5233148 Electrical discharge machine with machining gap voltage control |
| 08/03/1993 | US5233147 Wire-cut electric discharge machine |
| 07/27/1993 | US5231257 Electrical discharge machining control unit |
| 07/22/1993 | WO1993013902A1 Wirecut electrical discharge machining apparatus |
| 07/14/1993 | EP0551091A1 Discharge Detecting Device |
| 07/14/1993 | EP0550799A1 Electrical discharge machine with automatic filtering |
| 07/14/1993 | EP0394482B1 Working fluid temperature abnormality alarm apparatus of electric discharge machine |
| 07/01/1993 | DE4243922A1 Spark erosion machine - has control unit for semiconducting switches between series of capacitors discharged sequentially across electrode to earthed workpiece |
| 06/30/1993 | EP0548932A1 Surface layer forming process using electric discharge machining |
| 06/30/1993 | EP0548516A1 Control method of an electro-erosion machine |
| 06/29/1993 | US5223688 Fluid level adjusting apparatus in an electric discharge machining tank |
| 06/23/1993 | EP0547801A1 Electrical discharge boring apparatus |
| 06/22/1993 | US5221467 Contaminated solution filtration apparatus and machining solution filtration apparatus for machining device |
| 06/17/1993 | DE4241709A1 Ion exchange process - comprises passing liq. over surface of ion exchange resin and stirring resin, for adjusting resistivity of electro-erosion machining liq. |
| 06/16/1993 | EP0546225A1 Tool making |
| 06/09/1993 | EP0545156A2 Electrical discharge machine |
| 06/01/1993 | US5216218 Control unit for electrical discharge machine |
| 05/19/1993 | EP0366799B1 Power source for electric discharge machining |
| 05/19/1993 | CN1072122A Pulses generator for electrodischarge machining |
| 04/28/1993 | EP0539083A1 Non-flammable electric discharge machining fluid |
| 04/15/1993 | DE4132879A1 Dielectric fluid for metal processing by spark erosion - comprises mixt. of deionised water and poly:ol(s) or satd. aliphatic hydroxide |
| 04/06/1993 | US5200591 Electric discharge contour machining method |
| 04/01/1993 | WO1993005916A1 Method of correcting short-circuiting in wire-cut electrical discharge machine |
| 02/24/1993 | EP0295264B1 Electrical discharge machining by redressing electrodes |
| 02/23/1993 | US5189276 Method and apparatus for treating the dielectric used in electrical discharge machining |
| 02/16/1993 | US5187341 Method of reducing the wear of the electrode in machine tools using electro-erosion |
| 02/04/1993 | DE4125744A1 Spark erosion process - comprises applying continuously increasing test voltage until test discharge occurs and initiating high current erosion discharge if this current is sufficiently high |
| 02/04/1993 | DE4125742A1 Spark erosion pulse generator - providing controllable voltage and current profile at spark gap |
| 02/03/1993 | EP0526089A1 Electric discharge machining apparatus |
| 02/03/1993 | EP0525682A2 Power supply for electronic discharge machining system |
| 02/02/1993 | US5183988 Electric discharge machining method |
| 01/26/1993 | US5182474 Pulse control circuit for electric discharge machine using programmable logic |
| 01/19/1993 | US5181177 Method and apparatus for non-contact machining with dynamic feedback control |