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| Number | Title | Issue Date |
| 8134096 | Power supply-control device for electrical discharge machining apparatus A power-supply control device includes a high-frequency component detecting unit, a machining voltage level detecting device, and a pulse control device. The high-frequency component detecting unit detects a high-frequency component of discharge voltage at a machini... | 03/13/2012 |
| 7709764 | Power supply apparatus for electric discharge machine and power supply control method A power supply apparatus for an electric discharge machine configured to perform melt-removal on a workpiece by supplying pulse-like power to a machining gap between an electrode (1) and a workpiece (2). This power supply apparatus includes a second ma... | 05/04/2010 |
| 7652222 | Electric discharge machine and method for optimizing machining conditions of the electric discharge machine A discharge voltage detecting unit of an electric discharge machine detects a discharge voltage and determines an average discharge voltage in a specified period of time. An optimum machining condition computing unit determines a discharge current that makes an aver... | 01/26/2010 |
| 7645958 | Electric-discharge-machining power supply apparatus and small-hole electric-discharge machining apparatus In order to obtain an electric-discharge-machining power supply apparatus that can flow discharge current pulses through the machining gap uniformly and efficiently, and can realize reduction of the amount of electrode wear in machining in the alternate current puls... | 01/12/2010 |
| 7582842 | Method and apparatus for generating machining pulses for electrical discharge machining An apparatus and a method of generating machining pulses for electrical discharge machining by discharge of at least one line applying a voltage to a working gap formed between a machining electrode and a workpiece, including the steps of: charging the line via a fi... | 09/01/2009 |
| 7528340 | Apparatus and method for electric discharge machining and method of discriminating electric discharge An electric discharge machining apparatus comprises a power supply (5) for applying a voltage to a work gap formed between a tool electrode (E) and the workpiece (W) and a motor (7) that moves the tool electrode relative to the workpiece. An electric d... | 05/05/2009 |
| 7323654 | Electric discharge machining apparatus An electric discharge machining apparatus capable of precisely detecting the electric discharge in a case of performing machining by minute machining energy such as in finish machining. A voltage is applied between a tool electrode and a workpiece by repeating ON/OF... | 01/29/2008 |
| 7310567 | Method for the preparation, treatment and updating tool data A method for the preparation, editing and maintenance of tool data sets for machining processes in an NC control system has at least one tool data organization that is separate from the control and is stored in the memory of an ADP system. The tool data organization... | 12/18/2007 |
| 7282660 | Machining fluid level detection device for wire cut electrical discharge machines A table for placing a workpiece is grounded. An electrode for detecting machining fluid level is attached to an upper guide that guides the wire electrode, with the electrode insulated from the upper guide. A voltage is applied to the electrode, and the voltage betw... | 10/16/2007 |
| 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 a workpiece serving as another electrode arranged to be opposed to th... | 09/11/2007 |
| 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 calculated according to actual machining status based on the calculate... | 08/21/2007 |
| 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 predetermined gap therebetween, a capacitor that is connected between the work el... | 05/08/2007 |
| 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 machining amount input for machining the workpiece, based on a usage hi... | 04/10/2007 |
| 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 SW1 is turned on, a capacitor C is charged via an inductor L. When the voltage Vc of... | 12/12/2006 |
| 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 the sub-power supply, and then machining energy is supplied to the gap ... | 12/05/2006 |
| 7119300 | Method and apparatus of asynchronous electric discharge machine for wire cut An apparatus of asynchronous electric discharge machine for wire cut adopted for use in machine industries employs a first electric discharge machine unit and a second electric discharge machine unit to provide electric energy to a cutting wire to generate alternate... | 10/10/2006 |
| 7116115 | Micromachined probe apparatus and methods for making and using same to characterize liquid in a fluidic channel and map embedded charge in a sample on a substrate A micromachined probe apparatus and methods for making and using same to characterize liquid in a fluidic channel and map embedded charge in a sample on a substrate are provided. The probe apparatus includes an integrated scanning tip and a dither actuation mechanis... | 10/03/2006 |
| 7113884 | Positioning apparatus for an electrical discharge machine and a method therefor A positioning apparatus for an electrical discharge machine includes: a power supply 106 for applying a pulse voltage between an electrode 101 and a workpiece 102; a discharge detecting means 1108 for detecting the occurrence of electrica... | 09/26/2006 |
| 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 (1a) for discriminating a state of electric discharge generated between the electrodes and an impression voltage selecting m... | 09/19/2006 |
| 7102096 | Method and apparatus for electric-discharge machining of a turbine blade A method and apparatus for electric-discharge machining a turbine blade are provided. The method includes the steps of: a) preparing a disc material divided into an first portion and a second portion on a basis of a symmetrical line, b) fixing the disc material, wit... | 09/05/2006 |
| 7081586 | Power cable assembly for water and air-cooled welding torches A power cable assembly for use in a water and air-cooled welding assemblies for carrying power from a welding machine to a welding torch and either cooling water from the torch to a circulator reservoir or, in the case of air-cooled torches, shielding gas to the tor... | 07/25/2006 |
| 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 states, including electrical shorting and normal electrical dis... | 05/16/2006 |
| 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 voltage to the gap between the wire electrode and the workpiece. A detectin... | 05/02/2006 |
| 7039490 | Controller for wire electric discharge machine A controller for a wire electric discharge machine which can achieve stable machining with high surface accuracy without requiring adjustment of a gain or the like in wire-electrode feed control. A discharge gap detection unit detects a voltage between a wire electr... | 05/02/2006 |
| 7013195 | Wire electric discharge machining apparatus In a wire electric discharge machining apparatus, data on the number of machining shapes and the machining frequency of each of the machining shapes are acquired by analyzing the machining program and acquiring data on the machining starting positions, and those dat... | 03/14/2006 |
| 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 for isolating a cathode of the apparatus and an anode for processing;... | 02/14/2006 |
| 6995549 | DC-to-DC power regulator having non-linear load line and automatic leakage current offset adjustment A voltage regulator exhibits a load line that is piecewise linear. This piecewise linearity variation has a first constant voltage segment VLEAK at which output voltage is regulated for output currents less than or equal to the leakage current IL | 02/07/2006 |
| 6980879 | Controller for wire electric discharge machine A discharge pulse number generated between a wire electrode and a workpiece is counted every predetermined time. A ratio Px/Ps of this counted value Px to the reference pulse number Ps will be determined to control an amount of coolant in response to this ratio Px/P... | 12/27/2005 |
| 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 double voltage source (UD) connected to a supply network (A) arranged s... | 10/25/2005 |
| 6946615 | Method and system for electric discharge machining insulating material or high resistance material An electric discharge machine for machining a workpiece (2a) made of insulating material or other materials comprises: a first comparison member (17) for comparing voltage (V) between the electrodes of the electrode (1) and the workpiece ... | 09/20/2005 |
| 6940260 | Microenergy device for producing mechanically modulated microenergy output from digital microenergy input The present invention relates to a microenergy device for generating highly precise microenergy required for future high performance complex information appliances. The microenergy device of the present invention comprises a microenergy generating unit and a microme... | 09/06/2005 |
| 6941187 | Multiple discharge-servo curve control method and device for an electrical discharge machine A discharge-servo curve control method and device for an electrical discharge machine enables multiple discharge-servo curves to be chosen during a machining process in real-time. The control device includes a storage unit, a setting unit, a reading unit, a program ... | 09/06/2005 |
| 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 (Ue) set on the electrode is acquired, and the erosion pulse is interrupte... | 08/23/2005 |
| 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 (1a) and a workpiece (2) includes a high-frequency oscillation and amplification circ... | 08/16/2005 |
| 6924453 | Machining control method for wire-cut electric discharge machine The number of electric discharge pulses is detected every given period. A deviation between the detected number and a target number of electric discharge pulses is obtained. Based on the obtained deviation, a correction value for the correction of a machining path i... | 08/02/2005 |
| 6907311 | Electrical discharge machining apparatus and electrical discharge machining simulator An electrical discharge machining apparatus includes a simulator. The simulator calculates machining information relating to machining shape at each of several simulated machining depths, when the electrode is moved into a workpiece, until an input machining depth i... | 06/14/2005 |
| 6903297 | Wire electric-discharge machining method and device A wire electrical discharge machining apparatus for machining a workpiece (2) by supplying discharge energy to a gap between a wire electrode (1a) and the workpiece (2) by a working-electric-power source (16) having a dc power supp... | 06/07/2005 |
| 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 discharge to a rise of a voltage from a main power supply circuit. A parall... | 01/18/2005 |
| 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 electrode and the workpiece during drilling, and a gap between the ele... | 01/18/2005 |
| 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 between the discharge surface treatment electrode (10... | 10/26/2004 |
