| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219690160 | Gap spacing control | 8 |
| 20090127231 | Methods of Forming Superhard Cutters and Superhard Cutters Formed Thereby - A method of forming one or more features on a working surface of a superhard carbonaceous material comprises: positioning an electrode plate adjacent the superhard carbonaceous material, the electrode plate having an electrode surface oriented toward the working surface of the superhard carbonaceous material, the electrode surface including at least one protrusion or indentation formed therein or thereon; moving the electrode plate and the working surface toward one another while removing material from the working surface via electro-discharge machining; and moving the electrode plate and the working surface laterally relative to one another while removing material from the working surface via electro-discharge machining. | 05-21-2009 |
| 20120217225 | SPARK GAP CONTROL FOR ELECTRO-DISCHARGE MACHINING - A control module for an EDM device, comprises: controls for managing power supplied to the EDM device, taking voltage measurements, calculating responses, and controlling advancement of an electrode of the EDM device. The EDM device may include a piezoelectric crystal that electrically in parallel with the voltage applied to a spark gap between the electrode and a workpiece. | 08-30-2012 |
| 20130048612 | METHODS AND SYSTEMS FOR MONITORING AND CONTROLLING ELECTROEROSION - A method for monitoring machining in an electroerosion assembly having a power supply and an electrode arranged across a gap from a workpiece, includes measuring a voltage at a point in a voltage waveform after a time delay t | 02-28-2013 |
| 20140116991 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS AND CONTROL DEVICE - The present invention includes drive units | 05-01-2014 |
| 20140291296 | NANOMATERIALS FABRICATED USING SPARK EROSION AND OTHER PARTICLE FABRICATION PROCESSES - Methods, systems, and devices are disclosed for fabricating clean, oxidation-free nanoparticles of electrically conducting metals and alloys using spark erosion techniques. In one aspect, a method includes dispersing bulk pieces of an electrically conducting material in a dielectric fluid with mechanical vibrations within a container; generating an electric field using electrodes in the dielectric fluid using by an electric pulse, in which the electric field creates a plasma in a volume existing between the bulk pieces that locally heats the bulk pieces to form structures within the volume, the dielectric fluid quenching the structures to form nanoparticles, and filtering the nanoparticles through a screen including holes of a size allowing nanoparticles of the size or smaller to pass through the screen to a region in the container, in which the dielectric fluid inhibits oxidation of the surface of the nanoparticles. | 10-02-2014 |
| 20150027992 | WIRE ELECTRIC DISCHARGE MACHINE INCLUDING AVERAGE DISCHARGE DELAY TIME CALCULATING UNIT - Provided is a wire electric discharge machine in which time from application of a voltage to a machining gap between a workpiece and a wire electrode until occurrence of electric discharge is measured as a discharge delay time, and the measured discharge delay time is integrated over a predetermined measurement period to calculate a discharge delay integrated time. Further, the number of times of the voltage application in the measurement period is counted. An average discharge delay time per voltage application in the measurement period is calculated from the discharge delay integrated time and the number of times of voltage application. The movement of the wire electrode with respect to the workpiece is controlled on the basis of the average discharge delay time. | 01-29-2015 |
| 20150076118 | System and Method of Polishing a Surface - A method of polishing a surface of an object disposed within a gas chamber is provided. The method includes filling the gas chamber with a discharging medium to a predefined pressure, applying a voltage between an electrode and the surface, calibrating a height of the electrode relative to the surface so as to establish electrical breakdown threshold criteria, and scanning the electrode with respect to the surface so as to sequentially position the electrode over a plurality of locations on the surface, each location characterized by a surface error. When a respective location in the plurality of locations has a surface error that meets the electrical breakdown threshold criteria, electrical breakdown occurs, whereby the electrical breakdown results in a discharging pulse that polishes the surface. | 03-19-2015 |
| 20150360310 | PULSE AND GAP CONTROL FOR ELECTRICAL DISCHARGE MACHINING EQUIPMENT - A method of detecting the state of a gap between an electrode and a workpiece in electrical discharge machining (EDM) equipment, the method including the steps of: prior to generating an electrical discharge to remove material from the workpiece, applying a low energy checking pulse across the gap during a checking phase period (T | 12-17-2015 |
