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) |
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02/23/1999 | US5874702 Wire cut electrical discharge machine |
02/18/1999 | WO1999007510A1 Power supply for electric discharge machines |
02/18/1999 | DE19734977A1 Erosion drilling unit for starter holes |
02/11/1999 | WO1999006183A1 Method of manufacturing porous electrode wire for electric discharge machining and structure of the electrode wire |
02/09/1999 | US5870663 Manufacture and use of ZrB2 /CU composite electrodes |
02/09/1999 | US5869797 Bipolar electrical discharge machine which adjusts voltage polarity based on short circuit detection |
01/26/1999 | US5864213 For applying a voltage between an electrode and a workpiece |
12/29/1998 | US5854459 Method and device for processing workpieces by means of electrical discharge machining |
12/22/1998 | US5852269 Method and instrument for determining position wire electrode is in contact with workpiece |
12/17/1998 | DE19758192A1 Spark erosion unit |
12/08/1998 | US5847351 Electrode feeding apparatus for electric-discharge machining |
12/01/1998 | US5844191 Method of and system for manufacturing a helical cutter |
11/26/1998 | DE19756195A1 Spark erosion milling equipment |
11/24/1998 | US5841093 Electrical discharge apparatus and electrical discharge machining method |
11/19/1998 | DE19802122A1 Energy supply unit for an electrodischarge machine |
11/19/1998 | DE19753293A1 Spark erosion machine |
11/17/1998 | US5837957 Electric discharge machining apparatus |
10/29/1998 | DE19754672A1 Spark erosion machining unit |
10/27/1998 | US5828027 Electrical discharge machine with tar build-up detector |
10/27/1998 | US5827470 Electroconductive ceramic composite by mixing and milling a tetragonal zirconia alloy and zirconium diboride, pressing and sintering in an argon atmosphere and hot isostatically pressing |
10/06/1998 | US5818005 Electrical discharge machining electrode and rapid method for fabricating same |
09/24/1998 | DE19740714A1 Spark erosion machine |
09/17/1998 | DE19810470A1 Cylinder production method for two-stroke internal combustion engine |
09/15/1998 | US5808261 Electrical discharge machine |
09/01/1998 | US5801352 Power supply unit for discharge apparatus which prevents excessive electrode wear |
08/25/1998 | US5798492 Machining liquid processing unit in electric discharge machine |
08/18/1998 | US5795449 Processing-liquid reservation unit for discharge processing apparatus |
08/13/1998 | WO1998034744A1 Method of constructing fully dense metal molds and parts |
08/13/1998 | CA2280890A1 Method of constructing fully dense metal molds and parts |
08/12/1998 | CN1190048A Pneumatic driven automatic chuck |
08/05/1998 | EP0657241B1 Wire-cut electrical discharge machine |
07/28/1998 | US5786557 Electroerosion machine with a frame with a new structure |
07/01/1998 | EP0850121A1 Device for electrochemically machining recesses |
06/30/1998 | US5773782 Method and apparatus for the machining of metal by spark erosion |
06/30/1998 | CA2144265C Process of electric discharge position detection and process of electric discharge machining |
06/23/1998 | US5770831 Power supply system for an electric discharge machine |
06/17/1998 | EP0847968A1 Process for preparing an electrically conductive composite of tetragonal zirconia or of zirconia-alumina, and zirconium diboride |
06/17/1998 | CN1038732C Electric discharge machining fluid, and machining method using the fluid thereof |
06/16/1998 | US5768136 Method and apparatus for deciding trace of tool to be moved |
06/16/1998 | US5767473 Method and apparatus for electrical discharge machining with an adsorption device and agitator in the work tank |
06/10/1998 | EP0673702B1 Device and method for electric discharge machining |
06/03/1998 | EP0845320A1 Method and apparatus for electroerosion machining |
06/03/1998 | EP0636444B1 Method and apparatus for discharge machining control |
06/02/1998 | US5761068 CAD/CAM apparatus and method providing improved display of machined workpiece |
06/02/1998 | US5759362 Electrode for electrochemical machining |
05/26/1998 | US5756956 Wire-cut electric discharge machining apparatus and control method therefor |
05/26/1998 | US5756955 Method and apparatus for electric discharge machining with calculation of machining area |
05/20/1998 | EP0671235B1 Power source apparatus for electrical discharge machining |
05/19/1998 | US5753882 Electrical discharge machine with pulses of both polarities |
05/12/1998 | US5751155 Electrical discharge machining level detector |
05/12/1998 | US5750951 Power supply system for an electric discharge machine |
04/23/1998 | DE19641273A1 Spark erosion equipment and process for producing surface textures, especially on cylindrical rolls |
04/15/1998 | CN1038020C Method and apparatus for electric discharge machining of cutting tips |
04/09/1998 | DE19640790A1 Method and apparatus for spark erosion machining |
04/07/1998 | US5736015 Electrical discharge machining apparatus |
03/17/1998 | US5728345 Method for making an electrode for electrical discharge machining by use of a stereolithography model |
02/25/1998 | EP0824389A1 Device for use in electrical discharge machining of work pieces |
02/25/1998 | CN1037498C Pulse width modulating electric spark working pulse power source |
02/12/1998 | WO1998005801A1 MANUFACTURE AND USE OF ZrB2/Cu COMPOSITE ELECTRODES |
02/12/1998 | CA2261896A1 Manufacture and use of zrb2/cu composite electrodes |
02/10/1998 | US5717293 Strike enhancement circuit for a plasma generator |
01/21/1998 | CN1170649A Electrical discharge machining device |
01/21/1998 | CN1170648A Electrical discharge apparatus and electrical discharge machining method |
01/15/1998 | WO1998001255A1 Device for electrochemically machining recesses |
01/13/1998 | US5708676 Discharge excitation type pulse laser apparatus |
12/29/1997 | EP0649697B1 Apparatus for electric discharge machining, and method for setting machining condition for the apparatus |
12/17/1997 | EP0812643A1 Device and method for electric discharge machining |
12/17/1997 | CN1168117A Method and instrument for determining position where wire electrode is in contact with workpiece |
12/16/1997 | US5698115 Electrical discharge machine |
12/16/1997 | US5698114 Material made of fine particles is provided in discharge gap between workpiece and machining electrode |
12/11/1997 | DE19622918A1 Tool electrode and installation for spark-erosive machining |
12/02/1997 | US5693240 Surface layer forming apparatus using electric discharge machining |
11/26/1997 | EP0644811B1 Electrical discharge machining device |
11/19/1997 | CN2267888Y Coupled-type numerically-controlled electrospark forming machine-tool |
11/19/1997 | CN1165495A Wire cut electric discharge machining device |
11/18/1997 | US5688392 Machining by electrical removal of materials utilizing dispersions of insoluble particles |
11/06/1997 | DE19707696A1 Processing device for materials by electric discharge e.g. for manufacture of tool electrodes |
10/30/1997 | DE19627567C1 Apparatus for electrochemical production of cut-out in bore surface |
10/29/1997 | EP0803308A1 Wire cut electric discharge machining device |
10/29/1997 | EP0803307A1 Method and instrument for determining position where wire electrode is in contact with workpiece |
10/28/1997 | US5681488 Electrical discharge machine which uses voltages of opposite polarity |
10/23/1997 | DE19653168A1 Working fluid storage unit for spark erosion machining operation |
10/23/1997 | DE19614093A1 Producing spark erosion electrodes e.g. for forming injection moulds |
10/22/1997 | CN2265267Y Permanent magnet straight-line motor spindle head |
10/22/1997 | CN1162512A Processing liquid container of spark machining apparatus |
10/15/1997 | EP0800432A1 Electrode for electrochemical machining, method of electrochemical machining with said electrode, a bearing and a method of determining a profile using said electrode |
10/14/1997 | US5676861 Laser guided discharge machining apparatus |
10/14/1997 | US5676860 Electric discharge machine with electrode or object vibration and detection of abnormal gap condition |
10/09/1997 | WO1997036708A1 Spark erosion electrode |
10/08/1997 | CN2264056Y Electromagnetic main tapping |
09/23/1997 | US5669991 Electrical discharge machining of complex holes using shape memory alloy electrodes |
09/11/1997 | DE19708023A1 Electrode feed unit for electroerosive machining |
09/11/1997 | DE19644467A1 Apparatus for electroerosive machining |
07/30/1997 | EP0786303A1 Processing fluid treatment apparatus for electric discharge machines |
07/30/1997 | EP0657243B1 Electric discharge machining device |
07/15/1997 | US5648122 Using electrical discharge surface preparation for thermal coatings |
07/10/1997 | WO1997024202A1 Device and method for electric discharge machining |
07/02/1997 | EP0781740A2 Method for processing electrically non-conductive hard materials |
07/02/1997 | EP0781618A1 Highly efficient processing method based on high density radical reaction and using rotary electrode, apparatus therefor and rotating electrode used therefor |
06/10/1997 | US5637240 Electrical discharge machining method and electrical discharge machining apparatus |