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7268314 |
Discharge-processing power source device
A power supply device for electric discharge machining includes a switching circuit that supplies a discharge pulse current to an inter-electrode portion that is a portion between an electrode and...
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7259347 |
Electric discharge machine that calculates and displays the machining time
A change in machining volume is calculated using a shape of the electrode and a shape of the workpiece expressed by three-dimensional models and machining condition data and the machining time is...
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7214900 |
Electrical discharge machine power supply
An electrical discharge machining apparatus includes a work electrode adapted to support a work immersed in a working fluid, a tool electrode located opposing the work electrode with a...
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7202438 |
Electrical discharge machining apparatus
An electric-discharge machining apparatus for machining a workpiece by an electric discharge generated between a machining electrode and the workpiece, includes a correcting unit that corrects a...
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7148442 |
Power supply device for electric discharge machining
An electric-discharge-machining power supply device in which energy loss is hardly produced and a charge voltage of a capacitor is easily controlled. When a switching element SW 1 is turned on, a...
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7145096 |
Electric discharge machine power supply
An electric discharge machine has a main power supply and a sub-power supply connected in parallel across a gap formed by an electrode and a workpiece. A voltage is first applied to the gap from...
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7109432 |
Electric power unit for machining of wire electric discharge machine
The electric power unit for machining of a wire electric discharge machine includes an electric discharge state discriminate or ( 1 a ) for discriminating a state of electric discharge generated...
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7045735 |
Machining power supply for wire electrical discharge machine
Machining electrical power supply device for wire electrical discharge machining. Includes an electrical discharge state distinguishing circuit ( 6 ) for distinguishing at least two inter-electrode...
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7038158 |
Wire electrical discharge machining apparatus
A wire cutting electric discharge machine has a high frequency voltage applying unit that applies a high frequency voltage and a direct current voltage applying unit applies a direct current...
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6998563 |
Carbon nanotube apparatus for surface discharge polishing
A carbon nanotube apparatus for surface discharge polishing using a transistor discharge circuit includes a signal generator having a integrated circuit for generating square wave; a photo coupler...
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6958460 |
Device for machining by electroerosion
The device for machining by electroerosion comprises an electrode-tool (EO) and an electrode-workpiece (EP) constituting the opposite poles of a working gap (GA) and an electrical circuit with a...
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6946615 |
Method and system for electric discharge machining insulating material or high resistance material
An electric discharge machine for machining a workpiece ( 2 a ) made of insulating material or other materials comprises: a first comparison member ( 17 ) for comparing voltage (V) between the...
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6933457 |
Method and apparatus for electrical discharge machining of a workpiece
A method and apparatus for electrical discharge machining of a workpiece wherein an erosion pulse is applied on the tool electrode. During the time of the erosion pulse the voltage (U e ) set on...
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6930273 |
Power supply unit for wire electrical discharge machining and method of wire electrical discharge machining
A power supply unit for wire electrical discharge machining using an ac high-frequency power supply for applying an ac high-frequency voltage between a wire electrode (1 a ) and a workpiece ( 2 )...
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6844519 |
Electric sparking drill and method for forming a hole with an electric spark
An electric sparking drill and a method for using the same to drill a hole in a workpiece where at least one of a voltage applied to an electrode, the conductivity of a liquid applied between the...
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6844517 |
Power supply device for electric discharge machine
A power supplying device for an electric discharge machine prevents electric discharge by a voltage from a subsidiary power supply circuit during a delay time from generation of the electric...
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6838633 |
Method and apparatus for electrodischarge machining
An electric discharge machining apparatus for supplying machining electric power to a gap between an electrode ( 1 ) and a workpiece ( 2 ). The apparatus includes a gap dimension detection device (...
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6808604 |
Discharge surface treatment electrode, manufacturing method thereof and discharge surface treating method
WC powder ( 11 ) and W powder ( 12 ) are mixed and entered in a press mold and compressed and molded, thereby forming a discharge surface treatment electrode ( 10 ). Discharge is caused to occur...
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6806434 |
Electric discharge machine with output power control
An electric discharge machine in which electric power for working is supplied between an electrode and workpiece by an electric power unit so as to generate electric discharge between the electrode...
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6791055 |
Method and apparatus for electrodischarge machining
An electric discharge machining apparatus having: a machining condition storage device ( 13 ) including a machining condition database in which machining condition data are stored; an input-output...
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6784395 |
Electric discharge machine with changing processing parameters
A wire-electrical discharge machine infuses a processing liquid in a gap between a wire and a workpiece and processes the workpiece using predetermined processing parameters. The machine includes a...
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6781080 |
Wire electric discharge machine with stored discharge energy threshold function
A wire electric discharge machine includes storage means for storing threshold value data found from a relation between the normal electric discharge pulse energy and the electric discharge...
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6759620 |
Method and device for controlling a die-sink erosion machine
A method and a device are for controlling multiple machining processes in a die-sink erosion machine with several identical or different electrodes (R 1 , R 2 , R 3 , R 4 ), whereby the machining...
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6756557 |
Power supply for wire electric discharge machining
In a power source apparatus for wire electric discharge machining capable of applying voltages of both of positive and opposite polarities to a gap between a wire electrode ( 1 a ) and a workpiece...
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6730872 |
Method of and apparatus for wire electric-discharge machining
The wire electric-discharge machining apparatus is provided with an inter-pole voltage correction unit 109 which corrects a voltage corresponding to an inter-pole voltage according to a...
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6727455 |
Power supply system for applying a voltage of both positive and negative polarities in electric discharge machining
In an electric discharge machining power supply system that can apply a voltage of both positive and negative polarities between an electrode and a workpiece, there is provided a controller that...
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6723942 |
Automatic breakthrough detection device
An automatic breakthrough detection device for drilling electric discharge machine is provided. The automatic breakthrough detection device utilizing the facts of the variations of high frequency...
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6720516 |
apparatus for electric discharge micromachining of a micro-diameter hole
An electrode discharge machining apparatus includes a first holder for holding a workpiece to be subjected to electro discharge machining, an electrode provided opposing the workpiece held by the...
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6710279 |
Power supply for electric spark machine and method for controlling the same
In a power supply apparatus of an electric spark (discharge) machine for generating high frequency pulse by a switching circuit from a DC power supply, stepping up the voltage by a high frequency...
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6660957 |
Apparatus for electric discharge machining
A power supply apparatus for electric discharge machining is provided with a current loop including a diode, which is supplied with a forward current at the same time a voltage for generating a...
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6630641 |
Electric discharge machining apparatus generating preliminary discharge and machining discharge pulses
An electric discharge machining apparatus includes a wire electrode for machining a workpiece, and a first voltage applying unit for applying a voltage pulse. The voltage pulse has a rise time...
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6624377 |
Micro-electro-discharge machining method and apparatus
A micro-electro-discharge machining apparatus includes a substrate, a plurality of electrically conductive electrodes on the substrate arranged in an array, and a plurality of electrical...
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6610956 |
Device for quality decision of a machining state of an electric spark machine
A device for quality decision of a machining state of an electric spark machine to apply voltage in a pulse form to a machining space between an electrode and a workpiece for contour machining by...
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6600125 |
Process parameter optimization in electrical discharge machining
A method and apparatus for electrical discharge or electrochemical machining of workpieces, in which a machining electrode is moved relative to a workpiece, the machining is performed in cycles,...
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6580048 |
Electrical discharge machining apparatus supplying initial and processing currents
Charge accumulated in a capacitor is used to provide a processing current flow between a target and an electrode. When a diode is turned on, a first dc power supply is used to provide the...
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6566823 |
Discharge pulse generator
A discharge pulse generator for supplying power between a pair of electrodes ( 1 and 2 ), comprises a distribution constant line ( 8 ) of a predetermined length being connected at one termination...
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6563071 |
Method and apparatus for electrical discharge machining with multiple workstations
An electrical discharge machining (EDM) apparatus includes a plurality of work stations, where each work station has at least one electrode. The EDM apparatus further includes one or more power...
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6525287 |
Power supply for electro-erosion machine
A power supply for electro-erosion machine includes a capacitive network in series connected in the current loop for limiting or controlling the current flow through the gap formed by electrode and...
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6501232 |
Electric power unit for electric discharge surface treatment and method of electric discharge surface treatment
In the first pulse width T 1 of an electric discharge current, the group of switching elements ( 10 ) are controlled by the control means ( 11 ) and the first peak value Ip 1 is set at a...
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6472630 |
Electrical discharge power supply modular device for electrical discharge machine
An electrical discharge power supply modular device for electrical discharge machine includes at least a discharge power supply motherboard having a discharge power supply control signal bus and a...
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6465754 |
Process and device for machining by electroerosion
The process and device for machining by electroerosion are arranged so as to produce during each erosive discharge the following succession of phases: a delay phase (t D ) during which an...
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6429396 |
Electric discharge processing power supply having a protection network for the switching element
A power supply for an electric discharge machine which provides electrical power intermittently for discharge machining in a machining gap formed between an electrode and a work piece. The power...
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6423920 |
Electric discharge machining power supply, and electric discharge machining method
A power supply ( 100 ) and a method for electric discharge machining by repeatedly providing a current pulse to a working gap ( 3 ) formed between a tool electrode ( 1 ) and a workpiece ( 2 )...
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6396021 |
Wire-discharge machining apparatus
A wire-discharge machining apparatus for machining a workpiece by generating discharges between a wire electrode and the workpiece. In machining, the apparatus can detect all portions where...
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6392183 |
Process and device for machining by electroerosion
In the process of machining by electroerosion, there is adjusted during a first transitory phase the machining current increase of the discharges after triggering a discharge between the electrode...
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6291791 |
Switch for power supply circuit of electric discharge machine
A switch is disclosed for use in a power supply circuit for supplying electric discharge power between a tool electrode and a workpiece. It includes, a movable contact (12) having a piston (12A)...
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6281463 |
Power supply device for electric discharge machine
A power supply device for an electric discharge machine for supplying power to a work gap (6) formed between a work piece and a tool electrode, includes a parallel circuit in which a first power...
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6278076 |
Wire cut electric discharge machining apparatus and control method therefor
A wire cut electric discharge machine which has a first wire guide movable relative to a workpiece in a first axial direction, and a second wire guide movable relative to a workpiece in a second...
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6259053 |
Method and apparatus for controlling the position and power of electrodes in an electric-discharge texturing machine
A method and apparatus for controlling the position and power of electrodes in an electric-discharge texturing (EDT) machine for texturing a roll includes an actuator for moving an electrode away...
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6252191 |
Method and apparatus for electrical discharge machining with intermittent electrical measuring
EDM according to the present invention involves an intermttent type of operation between erosion pulses and measurement pulses in order to circumvent an interfering self-control effect of an...
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