Patents for B23H 7 - Processes or apparatus applicable to both electrical discharge machining and electrochemical machining (7,069)
05/1979
05/01/1979US4152569 Servo feed circuit for electrical discharge machining apparatus
04/1979
04/17/1979US4150275 Apparatus for controlling the relative motion of the electrodes in electrical discharge machining
04/03/1979US4147609 Apparatus for electrochemical machining of metal parts
03/1979
03/22/1979WO1979000120A1 Machining process by electro-erosion and system for applying such process
03/13/1979CA1050618A1 Reaming device for machining by electro-erosion
02/1979
02/27/1979CA1049622A1 Electrode cartridge for electrical discharge machining apparatus
02/27/1979CA1049621A1 Servo feed system for a wire electrode type electrical discharge machining apparatus
02/27/1979CA1049620A1 Disc electrode for arc cutting
01/1979
01/30/1979US4137143 Apparatus for electrochemical machining of metal parts
01/23/1979US4135305 Indexing device
01/16/1979US4135070 Edm apparatus and process with control for variable eccentric overcutting
01/16/1979US4134807 Process and apparatus for electrical machining of an electrode workpiece by an electrode tool, using EDM and ECM
10/1978
10/31/1978US4123645 Numerically controlled wire-cutting electric discharge machine
10/17/1978US4121081 Apparatus for and method of refeeding electrodes in an electrical discharge machining apparatus
10/17/1978US4121080 Wire electrode vibration damper
09/1978
09/12/1978US4114015 Electric discharge machine with a program copier and a tool support head carried by a longitudinally and transversely driven carriage
08/1978
08/29/1978CA1037292A1 Apparatus for obtaining relative orbital movement in electrical discharge machining
08/22/1978US4108357 Feed-rate indicator for electrochemical grinding
08/22/1978US4108024 Indexing devices
08/15/1978US4107504 Method and apparatus for controlling an electro-discharge machine tool
08/01/1978US4104503 Method of electroerosion and an apparatus for producing cavities inside a solid metal component
08/01/1978US4104502 Electro-erosion machine tool with compensation for operating forces, and method of operation
08/01/1978US4104501 Method of electrical discharge machine with simultaneous relative advance and cyclic translational movement of the electrodes
08/01/1978US4104500 Device for electrical discharge machining with simultaneous relative advance and cycle translational movement of the electrodes
07/1978
07/25/1978US4103137 Cutting of materials by spark erosion
06/1978
06/13/1978US4095079 Tool holder for a spark erosion machine tool
06/06/1978US4093530 Device for electrochemical treatment of workpieces
05/1978
05/09/1978US4088032 Servo head structure
04/1978
04/11/1978US4084074 Wire electrode protection system for electrical discharge machining
04/11/1978US4083767 Apparatus for electrochemical machining of workpieces
03/1978
03/28/1978US4081652 Electrical discharge machining by means of a wire electrode
03/07/1978US4078163 Programmable current control system for wire electrode electrical discharge machining apparatus
01/1978
01/31/1978US4071729 Adaptive control system and method for electrical discharge machining
11/1977
11/08/1977US4057703 Method of machining by erosive electrical discharges
10/1977
10/04/1977US4052584 Method and apparatus for cutting insulating material
10/04/1977US4052583 Method of and apparatus for electrical-discharge machining with a traveling-wire electrode
10/04/1977US4052274 Electrochemical wire cutting method
10/04/1977US4051747 Method for making a tool electrode for electrical discharge machining
09/1977
09/20/1977US4049942 Electric discharge machining method and device with preset electrode feed
09/13/1977USRE29399 Servosystem for gap electrical machining processes (especially electroerosion)
09/13/1977USRE29398 Servosystem for electrical machining processes
09/06/1977US4046984 Cutting-off machine working by electric sparking
08/1977
08/30/1977US4045641 Control system for an electro-erosion machine tool
08/23/1977US4044216 Multiple electrode electrical discharge machining
08/09/1977US4041269 Cartridge for an electrical discharge machining apparatus
08/09/1977US4041268 Method for adjusting the eccentricity of a spark-erosion machining electrode endowed with a movement of circular translation and a device for the application of said method
08/02/1977US4039779 Apparatus for compensating for electrode wear in an electrical discharge machine
06/1977
06/28/1977US4032741 Reaming device for machining by electro-erosion
06/14/1977US4029929 Electrical discharge machining device for cutting with wire electrode
06/14/1977US4029928 Electro-erosion machine tools
05/1977
05/03/1977US4021635 Apparatus for controlling tool feed mechanism on an EDM machine
04/1977
04/26/1977US4020313 Adjustable electrode positioning device for electric spark machining apparatus
04/05/1977US4016395 Wire electrode feed system for electrical discharge machining
04/05/1977US4015513 Indexing devices
03/1977
03/22/1977US4013862 Transversely and angularly adjustable tool holder edm electrodes
01/1977
01/25/1977US4005303 EDM parameter control system
01/18/1977US4004123 Method of and system for the controlling of an apparatus for the electric discharge machining of a workpiece
01/11/1977US4002885 Servo feed system for a wire electrode type electrical discharge machining apparatus
12/1976
12/14/1976US3997753 Control system and method for electric discharge machining (EDM) using a predetermined portion of each discharge pulse for monitoring
10/1976
10/19/1976US3987271 Electrical discharge machining power supply circuit
10/19/1976US3987270 Automatic set-up electroerosion machining method and apparatus
10/19/1976US3987269 Method of controlling electrical discharge machining
09/1976
09/21/1976US3981786 ECM and EDM tooling for producing holes in airfoil trailing edges
08/1976
08/17/1976US3975608 Method and apparatus for regulating the gap distance in electroerosin machining
08/17/1976US3975607 Method and apparatus for controlling an electroerosion machining operation
08/03/1976US3973104 Apparatus for regulating an electric discharge machining gap
03/1976
03/23/1976US3946189 Electroerosion apparatus having a cyclically movable and variably inclined wire electrode
03/09/1976US3943322 Wire electro-erosion machining apparatus
02/1976
02/17/1976US3939322 Electrode tool holder assembly for electrical machining apparatus
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