Patents
Sitemap › 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 › B23H 7 - Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
Patents for B23H 7 - Processes or apparatus applicable to both electrical discharge machining and electrochemical machining (7,069)
10/1990
10/16/1990US4963711 Electric discharge position detecting device of a wire electric discharge machine
10/16/1990US4963710 Process and device for mechanical grinding or sharpening of workpieces by use of electrically conductive grinding or sharpening tools
10/10/1990EP0391450A1 Wire electrode type electric discharge machining device
10/10/1990EP0390933A1 Apparatus for detecting a failure in automatic wire extension
10/04/1990WO1990011159A1 Tool-holder and high-speed spindle
10/03/1990EP0390318A2 Method of and apparatus for forming a slot in a workpiece
10/03/1990EP0389639A1 Centering method in an electrolytic finishing apparatus
10/02/1990US4960971 Wire EDM with apparatus supporting a workpiece through wall of machining bath
09/1990
09/26/1990EP0389221A1 Production method of honeycomb die-forming electrical discharge machining electrodes and production method of honeycomb dies
09/26/1990EP0160104B1 Apparatus for cooling wire electrode in wire-cut electric discharge machine
09/19/1990EP0259661B1 Current conductor for a wire electrode of an electroerosion machine
09/19/1990EP0107737B1 Wire electrode cutter for wire cut discharge machining apparatus
09/18/1990WO1990011158A1 Electrical discharge machine apparatus tilted current pickup
09/18/1990WO1990011157A1 Electrical discharge machine apparatus moving wire electrode guide assembly
09/18/1990CA2050307A1 Electrical discharge machine apparatus tilted current pickup
09/18/1990CA2047179A1 Electrical discharge machine apparatus moving wire electrode guide assembly
09/04/1990CA1273683A1 Device for electrical discharge piercing of holes in components
08/1990
08/29/1990EP0383921A1 Method of preparing nc data
08/28/1990US4952790 Electrical discharge machining control circuit
08/24/1990WO1990009855A1 Long lasting electrical discharge machine wire guide
08/22/1990EP0383370A1 Control and method for electroerosion wire cutting avoiding wire breakage
08/21/1990US4950860 Electro-discharge machining apparatus
08/16/1990DE4002810A1 Spark-eroding machine with workpiece holder and movable electrode - has rotatable electrode cutter and thrust units to avoid need periodically to interrupt machine process
08/14/1990US4948934 Of an existing depression
08/14/1990US4948488 Apparatus for the electrochemical machining of fashioned surfaces
08/08/1990EP0381595A1 Wiry electrode with a metallic coating for spark erosion, and its manufacturing process
08/08/1990EP0381277A1 Injection device and wire electrode erosion machine for high-speed precision machining
08/08/1990EP0380694A1 Device for supplying a machining solution to a discharge machining apparatus
08/08/1990EP0380690A1 Method of controlling wire tension of a wire-cut discharge machining apparatus
08/02/1990DE4002191A1 Spark erosion machine with laterally apertured vessel - delivers working fluid through gap between electrode arm and enclosing sealing sleeve
08/01/1990CN1044308A Apparatus for electrochemical treatment of products
07/1990
07/31/1990US4945200 Electrical discharge machine apparatus moving wire electrode guide assembly
07/25/1990CN1008891B Multifunction plate-cutting machine with electrosparking cutting disk
07/18/1990EP0378280A1 Device and method for controlling a parameter variation in electroerosion wire cutting
07/18/1990EP0378278A1 Control device and method for electroerosion cutting with a wire electrode
07/18/1990EP0176603B1 Device for forming an initial hole in a discharge machining apparatus
07/10/1990US4940871 Method of restoring a wire electrode broken during an electric discharge machining operation
07/04/1990EP0376362A1 Protection device for machining heads
07/04/1990EP0375774A1 Device for electro-erosive piercing of openings in parts
07/03/1990US4939334 Method for the controlled withdrawal of a countersinking electrode in an electroerosion machine
06/1990
06/26/1990US4937414 Wire guide for electrical discharge machining apparatus
06/26/1990CA1270910A1 Electrical discharge machining center
06/20/1990CN1008428B Electroerosion process and electroerosion machine for performing the process
06/19/1990US4935594 Eroding electrode, in particular a wire electrode for the sparkerosive working
06/14/1990WO1990006202A1 Working liquid feeding apparatus for wire cut electric discharge machine
06/13/1990EP0373154A1 Electrical discharge methods and apparatus therefor
06/13/1990EP0372475A1 Wire electrical discharge machine
06/13/1990EP0372036A1 Device and process for continuous adaptive control for an edm-wire cutting machine
06/06/1990EP0371962A1 Electro-discharge machining apparatus
06/06/1990EP0371724A1 Method of automatically feeding wire to an electric discharge machine
06/06/1990EP0371302A1 Cutting wire power supply for a spark erosion machine
06/06/1990EP0173749B1 Perforating apparatus relying upon electric discharge machining
06/05/1990US4931614 Wire electrode vertically setting method and device for wire cut electric discharge machine
06/05/1990CA1270043A1 Electrical discharge machining center
05/1990
05/30/1990EP0370950A1 Wire-cut electric discharge machine
05/30/1990EP0370707A1 Electrical discharge apparatus
05/30/1990EP0370112A1 Wire recovery method
05/29/1990US4929810 Wire cut electric discharge machine
05/29/1990US4929809 Wire drive apparatus in a wire-cut electric discharge machine
05/23/1990EP0151645B1 Electric discharge machining apparatus
05/17/1990WO1990005040A1 Electric discharge machine equipped with control information display function
05/16/1990EP0368394A1 Device for limiting the tool electrode withdrawal of a working machine and its use in electroerosion
05/16/1990EP0174372B1 Power source for electric discharge machining
05/09/1990EP0366812A1 Wire breakage position detector
05/09/1990EP0366811A1 Method and apparatus for wire recovery
05/09/1990EP0366801A1 Wire withdrawal structure for wirecut electric discharge machine
05/08/1990US4924051 Split grip tip for mounting of electrode blanks
05/08/1990US4924050 Reducing cross-section, diffusion annealing, oxidation
05/03/1990WO1990004480A1 Electric discharge machine
05/03/1990WO1990004479A1 Working fluid temperature abnormality alarm apparatus of electric discharge machine
05/02/1990EP0366415A1 Method and apparatus for the production of apertures
05/02/1990EP0365679A1 Initial hole machining unit for wire cut electric discharge machines
05/02/1990EP0166786B1 Positioning apparatus for electric discharge machine
05/02/1990EP0150220B1 Contact sensing apparatus for an electric discharge machine
05/01/1990US4922074 V-block holder for EDM electrode
04/1990
04/25/1990EP0364605A1 Wire cut electric discharge machining method
04/25/1990EP0364591A1 Electric discharge machining apparatus preventing electrolytic corrosion by short-circuit detection voltage
04/25/1990CA2001275A1 Method and apparatus for the production of sized apertures
04/19/1990WO1990003866A1 Method and apparatus for adaptive control of machining apparatus
04/19/1990WO1990003863A1 Device for detecting defect in the automatic wire bonding
04/19/1990WO1990003862A1 Automatic wire connecting method
04/17/1990US4918279 EDM cutting machine including device for preventing transmission of sealing plate movement to guide head arm
04/11/1990EP0362545A1 Method and device for automatically and repeatedly threading the wire electrode of an EDM apparatus
04/10/1990CA1267696A1 Electrode wire for electrical discharge machining
03/1990
03/28/1990CN1040753A Apparatus for preparation of machining liquid for electroerosion machine
03/28/1990CN1040752A Apparatus for preparing the machining liquid of electroerosion machine
03/28/1990CN1040751A Apparatus for preparing machining liquid of electroerosion machine
03/22/1990WO1990002625A1 Centering method in an electrolytic finishing apparatus
03/21/1990EP0124625B1 Electric discharge machining control circuit
03/20/1990CA1266891A1 D.c. motor driven edm head
03/14/1990CN1007135B Compound processing method of electric spark and ultrasonic wave
03/08/1990WO1990002020A1 Wire-cut electrical discharge machining apparatus
03/08/1990WO1990002014A1 Device for fastening an object arranged at one end of a cylindrical shaft to a coupling part of a coupling
03/08/1990WO1990002013A1 Wire breakage restoration method of wire electric discharge machining apparatus
03/07/1990EP0356921A1 Method and device for the electroerosive machining of metal work pieces
03/07/1990EP0356526A1 Wirecut electric discharge machine
03/07/1990EP0356520A1 Automatic wire connecting method
03/05/1990WO1990004478A1 Process liquid circulation apparatus
03/03/1990WO1990004665A1 Device for electrochemical treatment of articles
02/1990
02/28/1990EP0355696A1 Wire threading method for a wire discharge machine
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