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 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
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)
01/1984
01/10/1984USRE31494 Electric discharge machining method and device with preset electrode
12/1983
12/27/1983US4423302 Digital drive apparatus for effecting control displacements in an electroerosive machine tool
12/20/1983CA1159014A1 Edm electrode with carbon and refractory material skeleton infiltrated with metal
12/08/1983WO1983004204A1 Electric discharge machining apparatus
11/1983
11/29/1983US4417962 In an open ended tubular casing
11/15/1983US4415791 Breakthrough detection means for electric discharge machining apparatus
11/08/1983US4414456 Electroerosive wire-cutting method and apparatus with a shaped high-velocity stream of a cutting liquid medium
11/02/1983EP0093026A2 Spark erosion machine
11/02/1983EP0092847A1 Tool electrode for electro-erosion machining
10/1983
10/13/1983WO1983003377A1 Machining solution for electric discharge machining
10/11/1983US4409458 EDM Method and apparatus with the controlled supply of a liquid machining medium into the gap
10/11/1983US4409457 System for manufacturing tire molding metal molds with electrical discharge machining
10/04/1983US4408113 Electrical machining apparatus
09/1983
09/27/1983US4406938 Discharge machining apparatus
09/13/1983US4404448 Process and apparatus for gap control of an EDM apparatus
07/1983
07/26/1983US4395612 Power source circuit for electric discharge machine
07/19/1983US4394558 EDM Method of machining workpieces with a controlled crater configuration
07/12/1983US4393292 Method of and apparatus for electrical discharge machining a small and deep hole into or through a workpiece
07/05/1983US4392043 Pulse generator
06/1983
06/07/1983US4387286 Apparatus for controlling splashes and purification of a machining liquid
06/07/1983US4387285 Power source for wire-cut electric discharge machines
06/07/1983US4387284 Electrical discharge machining apparatus
05/1983
05/03/1983US4382168 Ultra-fine finish EDM method and apparatus
04/1983
04/06/1983EP0076150A2 Method for electrical discharge machining of a work in the form of a roll
03/1983
03/15/1983US4376880 Method of and apparatus for detecting gap conditions in EDM process with monitoring pulses
03/15/1983US4376355 Abrading apparatus having zero reference sensing means
03/09/1983EP0073253A1 Pulse generator for electric discharge machining apparatus
03/01/1983US4375588 Process and apparatus for controlling the concentration of solid particles in suspension in an EDM machining fluid
02/1983
02/09/1983EP0071043A2 Generator for an electroerosion machine
02/08/1983US4373127 Carbon skeleton and refractory granules of material such a tungsten, molybdenum, or carbides
01/1983
01/26/1983EP0070700A2 Method and apparatus for controlling an electric discharge machine
01/25/1983US4370536 Efficiency adaptive EDM apparatus and method
01/05/1983EP0068819A2 Method and apparatus for controlling an electric discharge machine
01/05/1983EP0068818A2 Method and apparatus for controlling an electric discharge machine
01/04/1983US4367400 Device for automatic control of electro-erosion machine
12/1982
12/28/1982US4366360 Method of and apparatus for determining relative position of a tool member to a workpiece in a machine tool
12/21/1982US4365133 Method of and apparatus for electroerosively machining a 3D cavity in a workpiece
11/1982
11/10/1982EP0064070A1 Device for orienting a guiding head of an electro-erosion cutting machine.
11/10/1982EP0064069A1 Device for orienting the guiding head of an electro-erosion cutting machine.
11/02/1982US4357516 EDM Method and apparatus utilizing successive trains of elementary pulses with controlled pulse-off periods
09/1982
09/21/1982US4350863 High-frequency power feeder circuitry and supply for electrical discharge machining
09/21/1982CA1132201A1 Power output module for electrical discharge machining power supply circuit
09/16/1982WO1982003035A1 Pulse generator for electric discharge machining apparatus
09/07/1982US4348573 Methods and apparatus for electrical discharge machining
08/1982
08/31/1982US4347425 Wire-cut, electric-discharge machining power source
08/31/1982US4347424 Wire-cut, electric-discharge machining power source
08/24/1982US4346278 Methods and apparatus for electrical discharge machining
08/17/1982US4345131 Method and apparatus for electrode tool wear compensation
07/1982
07/28/1982EP0056784A1 Method and apparatus for automatic process control by electrical discharge machining
07/22/1982WO1982002353A1 Method for the automatic monitoring of electro-erosion machining
07/06/1982US4338504 Arc prevention and detection electrical discharge machine servo control system
06/1982
06/15/1982US4335294 EDM Method and apparatus having a gap discharge circuit constructed with limited stray capacitances
05/1982
05/26/1982EP0052197A2 Power supply for an electrical discharge machining apparatus
05/19/1982EP0007965B1 Improvements in methods and apparatus for electrical discharge machining
05/13/1982WO1982001497A1 Device for orienting a guiding head of an electro-erosion cutting machine
05/13/1982WO1982001496A1 Device for orienting the guiding head of an electro-erosion cutting machine
05/13/1982WO1982001495A1 Device for orienting the guiding head of an electro-erosion cutting machine
04/1982
04/13/1982US4324969 Electrical discharge machining system with optical isolation of a gap monitor from remote control circuit
04/06/1982US4322922 Method of forming electrical discharge machine tools
03/1982
03/30/1982US4322595 Arc monitor for electrical discharge machining
03/16/1982US4320278 Servo feed system for electrical discharge machining apparatus
03/09/1982US4319115 Electrode tool holder for EDM apparatus
02/1982
02/24/1982EP0007968B1 Improvements in methods and apparatus for electrical discharge machining
02/17/1982EP0046077A1 Method of manufacture of carbon material
01/1982
01/12/1982US4310741 Storage-capacitor-type EDM power supply
12/1981
12/15/1981US4306136 Process and apparatus for eliminating short circuits in electrical discharge machining
12/15/1981US4306135 Power output module for electrical discharge machining power supply circuit
12/08/1981CA1114026A1 Electrical discharge machining power supply with digitally controlled on and off time and protective system
12/01/1981US4303957 Gap condition sensing circuit for electrical discharge machining power supply
10/1981
10/28/1981EP0038662A2 A power source arrangement for an electric discharge machine
09/1981
09/29/1981US4292490 Electrical discharge machining power supply with digitally controlled on and off time and protective system
09/15/1981US4289947 Fluid jetting system for electrical machining
09/08/1981US4288675 Cutting area responsive EDM method and apparatus with cyclically interrupted pulse trains
09/02/1981EP0034626A1 Cut-off protection system for electrical discharge machining apparatus.
09/01/1981US4287404 Electrode for electrical discharge machining
09/01/1981US4287403 Method and apparatus for adjusting the gap in an electric discharge machine
08/1981
08/28/1981EP0034626A4 Cut-off protection system for electrical discharge machining apparatus.
08/26/1981EP0034477A1 A power source circuit for an electric discharge machine
08/19/1981EP0034008A2 EDM electrodes
07/1981
07/15/1981EP0032023A1 A power source for an electric discharge machine
07/07/1981US4277668 High-frequency power feeder circuitry and supply method for electrical discharge machining
05/1981
05/12/1981US4267423 Protection circuit for electrical discharge machining power supply
05/12/1981US4267422 Power supply circuit of the high voltage type for electrical discharge machining apparatus
04/1981
04/22/1981EP0027345A1 A power source for a wire-cut electric discharge machine, and such a machine including the power source
04/21/1981US4263494 Control means for the relative displacement of the electrodes of an EDM apparatus
04/15/1981EP0027041A1 Wire-cut electric-discharge machine, a power source for such a machine, and a method of wire-cut electric-discharge machining
04/15/1981EP0027040A1 A wire-cut electric-discharge machine and a power source for such a machine
03/1981
03/24/1981US4258243 Over current protection system for electrical discharge machining apparatus
03/18/1981EP0025231A1 Electrode disposition with dielectric injection for electroerosion apparatus
03/05/1981WO1981000532A1 Cut-off protection system for electrical discharge machining apparatus
03/03/1981US4254320 Power output module for electrical discharge machining power supply circuit
02/1981
02/17/1981US4251706 Electrode tool for EDM and method for utilizing such electrode tool
01/1981
01/13/1981US4245144 Spark-machining apparatus
12/1980
12/30/1980US4242560 Servo feed system for an electrical discharge machining apparatus
12/30/1980US4242555 Process and apparatus for eliminating short circuits in electrical discharge machining
12/09/1980US4238660 Multi-lead servo feed system for electrical discharge machining apparatus
12/02/1980US4237370 Pulse generator for metal machining by electric discharges
11/1980
11/25/1980US4236057 Apparatus for detecting gap conditions in EDM processes with monitoring pulses
11/25/1980CA1090166A1 Porous material for making tool-electrode and method of producing same
10/1980
10/28/1980US4230927 Apparatus for electrical discharge machining of cylindrical work
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