| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219690170 | Methods | 47 |
| 20080203069 | EDM process for manufacturing reverse tapered holes - A electrical discharge machining apparatus is disclosed. The apparatus may have an electrode, an actuator configured to advance the electrode, and a power supply. The apparatus may also have a controller in communication with the actuator and the power supply. The controller may be configured to negatively charge the electrode, and regulate the actuator to advance the negatively charged electrode toward a positively charged workpiece, thereby initiating erosion of the positively charged workpiece. The controller may also be configured to positively charge the electrode and negatively charge the workpiece to erode the electrode to a desired condition after workpiece erosion has been initiated. The controller may also be configured to continue advancing the electrode toward the workpiece after the electrode has been eroded to the desired condition. | 08-28-2008 |
| 20080277384 | APPARATUS AND METHOD FOR HYBRID MACHINING A WORKPIECE - An apparatus and method for hybrid machining a workpiece is disclosed. The apparatus includes a mandrel for supporting the workpiece adjacent a cutter mounted on an arbor. A workpiece is powered as an anode and the cutter is powered as a cathode, and a cutting fluid or coolant is circulated therebetween. The cutter is made of a conductive material and a non-conductive abrasive material to maximize the amount of material removed from the workpiece. The coolant includes one or more additives to enhance the electrical discharge between the cutter and the workpiece. The cutter is moved relative to the workpiece to remove material from the workpiece at a predetermined depth of cut using an enhanced high-speed electro-erosion (HSEE) process in which both HSEE and abrasive machining processes are used. The workpiece may then be finish machined to a final shape of the titanium article, such as a dovetail of a turbine blade. | 11-13-2008 |
| 20090020509 | APPARATUS AND METHOD FOR HYBRID MACHINING A CONTOURED, THIN-WALLED WORKPIECE - An apparatus and method for hybrid machining a workpiece is disclosed. The workpiece is powered as an anode, a cutter is powered as a cathode and a cutting fluid or coolant is circulated therebetween. The cutter is made of a conductive material and a non-conductive abrasive material. The hybrid machine performs a roughing pass machining operation in which material is removed from the workpiece at a relatively high rate using a high-speed electro-erosion (HSEE) process. Then, the hybrid machine performs a finish pass machining operation in which material is removed from the workpiece using precision electro-grinding (PEG) process at a different differential electrical potential and/or flushing rate than the roughing pass machining operation to provide a smooth finish without thermal effects on the workpiece. | 01-22-2009 |
| 20090065483 | WIRE ELECTRIC DISCHARGE MACHINING METHOD - A wire electric discharge machining method for cutting a workpiece while moving a wire electrode, supported between upper and lower wire guides substantially perpendicular to a horizontal program plane, along a program path (PQ) having a start point (P) and an end point (Q) on the program plane. The method of the present invention includes a step of varying a taper angle command (θ) within the program path; a step of acquiring a set allowable error (ε); a step of obtaining one or more dividing points (D | 03-12-2009 |
| 20090120912 | Method for Machining a Workpiece - A method for machining a workpiece which includes a conductor which carries a time-variable current along its longitudinal axis and is guided by an upper guide and a lower guide. A magnetic field is produced between the guides, the upper guide being located at a distance above the magnetic field and the lower guide at a distance below the magnetic field. | 05-14-2009 |
| 20090139965 | PROBE ARRAY AND METHOD OF ITS MANUFACTURE - A method of forming a probe array includes forming a layer of tip material over a block of probe material. A first electron discharge machine (EDM) electrode is positioned over the layer of tip material, the EDM electrode having a plurality of openings corresponding to a plurality of probes to be formed. Excess material from the layer of tip material and the block of probe material is removed to form the plurality of probes. A substrate having a plurality of through holes corresponding to the plurality of probes is positioned so that the probes penetrate the plurality of through holes. The substrate is bonded to the plurality of probes. Excess probe material is removed so as to planarize the substrate. | 06-04-2009 |
| 20090166335 | System and Method for Ultrasonic Assisted EDM Machining - A system for ultrasonic assisted electrical discharge machining of a component part having a longitudinal axis, a half wavelength resonant frequency along the longitudinal axis and an attachment portion, is provided. The system includes an ultrasonic horn having a longitudinal axis, a half wavelength resonant frequency along the longitudinal axis and an attachment portion. The half wavelength resonant frequency of the ultrasonic horn is the same as the half wavelength resonant frequency of the component part. Additionally, one of the attachment portion of the component part and the attachment portion of the ultrasonic horn is a male part and the other one of the attachment portion of the component part and the attachment portion of the ultrasonic horn is a female part sized and shaped to mate and engage one another when the component part and the ultrasonic horn are at generally the same temperature. | 07-02-2009 |
| 20090166336 | METHOD AND SYSTEM FOR FABRICATING AN ASPHERICAL ORTHOPAEDIC PROSTHETIC COMPONENT - A method and apparatus for fabricating an aspherical orthopaedic prosthetic component includes rotating the orthopaedic prosthetic component and operating an electrical discharge machining cutting tool (EDM) to move a wire electrode of the EDM along a number of arcuate cutting paths. A spark is generated between the wire electrode and the orthopaedic prosthetic component to remove a portion of the orthopaedic prosthetic component. | 07-02-2009 |
| 20090166337 | METHOD AND APPARATUS FOR FABRICATING AN ORTHOPAEDIC PROSTHETIC COMPONENT - A method and apparatus for fabricating an orthopaedic prosthetic component includes rotating the orthopaedic prosthetic component and operating an electrical discharge machining cutting tool (EDM) to move a wire electrode of the EDM along an arcuate path. A spark is generated between the wire electrode and the orthopaedic prosthetic component to remove a portion of the orthopaedic prosthetic component. | 07-02-2009 |
| 20090194512 | Multi-function machine - A multi-function machine includes an electrode having a passage, a power supply device electrically connected with the two opposite terminals thereof to the electrode and the workpiece to be processed, a feeder for selectively feeding a gas or fluid to the passage of the electrode, a first laser beam and a second laser beam respectively projected through the passage of the electrode onto the workpiece, and a detection control device for receiving the reflective light wave of the second laser beam reflected by the workpiece. | 08-06-2009 |
| 20090218322 | DIES FOR MANUFACTURING SUBSTRATES AND METHODS OF MAKING - Extrusion dies for manufacturing substrates with peripheral strengthening are manufactured by plunge EDM machining a solid material and subsequently forming slots by wire EDM slot machining. | 09-03-2009 |
| 20090314748 | ULTRASONIC ASSISTED ELECTRODISCHARGE MACHINING - An apparatus for machining holes into a conductive workpiece includes a tank at least partially filled with a dielectric fluid, a fixture for holding the workpiece in the tank, an electro discharge machine, and an ultrasonic source. The electro discharge machine includes an electrode and a power supply connected to the electrode that produces machining pulses for electro discharge machining through the workpiece. The ultrasonic source includes an ultrasonic generator and a transducer, wherein the transducer is partially submerged in the fluid contained within the tank. | 12-24-2009 |
| 20100025379 | METHOD FOR WIRE ELECTRO-DISCHARGE MACHINING A PART - A method for machining a part includes wire electro-discharge machining the part, and then selectively reducing a zinc content of the residual recast layer left on a surface of the part, while otherwise leaving the recast layer substantially intact. | 02-04-2010 |
| 20100038344 | Method for Electrical Discharge Machining of Electrically Non-Conductive Material - The invention relates to a method for electrical discharge machining of electrically non-conductive material in which a layer of an electrically conductive substance is applied as an auxiliary electrode on the electrically non-conductive material. Said method is characterized in that the electrically conductive substance is chemically converted by oxidative heat treatment after electrical discharge machining. | 02-18-2010 |
| 20100051588 | ELECTRO DISCHARGE MACHINING APPARATUS AND METHOD - An electro discharge machining apparatus comprises an electrode configured to machine a desired feature in a workpiece, a pulse generator configured to energize the electrode and the workpiece to opposite electrical polarities, a machining solution source configured to pass a machining solution between the electrode and the workpiece, and a servomotor configured to drive the electrode to move relative to the workpiece. The electro discharge machining apparatus further comprises at least one detection element configured to detect machining signals, and a controller. The controller controls the pulse generator and the servomotor to machine the workpiece according to a plurality of first process parameters predetermined therein and analyzes the detected machining signals to generate a first response signal to activate a plurality of second process parameters predetermined therein and different from the first process parameters to machine the workpiece. An electro discharge machining method is also presented. | 03-04-2010 |
| 20100108644 | APPARATUS AND METHOD FOR MAKING BORES IN AN EDGE OF A TURBINE BLADE - An apparatus for making bores in a turbine blade edge is provided. The apparatus includes a drilling device and a guide for the drilling device. The guide includes a bearing element with a gap which is delimited by bearing faces and has the shape of a turbine blade edge. Further, the apparatus includes two guide modules which lie opposite one another and are brought to bear with a side face of the turbine blade and which together form a tension device for fixing the guide on the turbine blade. Furthermore, a method for making bores in a turbine blade edge using such an apparatus is provided. | 05-06-2010 |
| 20100243612 | ELECTRICAL DISCHARGE MACHINING - Processing of components such as turbine blades for gas turbine engines requires formation of holes and other shaping. It is known to use electrical discharge machining processes to produce such holes and apertures in work pieces. Removal of debris is important to avoid short circuiting and/or arcing and to allow rapid processing. Utilisation of high pressure dielectric fluid flow reduces debris build up but can still result in short circuit switching or interrupt continuous processing. By provision of vibration and in particular ultrasonic vibration cavitation is induced within the pressurised dielectric fluid flow to enhance debris removal and therefore improve continuous machining processes. | 09-30-2010 |
| 20100252534 | METHOD FOR PROCESSING METAL MOLDING MEMBER HAVING FINE CONFIGURATION, METHOD FOR MANUFACTURING METAL MOLDING MEMBER, EXTRUSION DIE, METHOD FOR MANUFACTURING EXTRUDED MEMBER, AND EXTRUDED MEMBER - A molten residual layer formed on a surface | 10-07-2010 |
| 20100264119 | ELECTRIC DISCHARGE MACHINING APPARATUS AND PROGRAMMING DEVICE - An electric discharge apparatus includes electrode specification input means for inputting each electrode specification of a plurality of integral electrode where electrodes corresponding to a plurality of machining forms are arranged continuously on the same axis, machining detail input means for inputting data of a workpiece when electric discharge machining is performed using the integral electrode, and a machining program generation means for generating a machining program consisting of machining start position and a machining depth when electric discharge machining is performed using each electrodes based on the electrode specification and the thickness data of the workpiece thus input. There are further provided electrode specification input means and the machining detailed input means capable of inputting thereinto the following information: which part of the integral electrodes acts for rough machining and which part acts for finish machining, whether a finishing electrode is provided at one position or two positions, in what position relation they are, and how much the thickness of the workpiece is. Therefore, manual calculation by a worker is not required and a program can be made automatically only by inputting these parameters. | 10-21-2010 |
| 20110049108 | Electro-Erosion Edge Honing of Cutting Tools - A process for preparing the cutting edge of a cutting tool having a rake face and a clearance face. The process comprises the elimination of material from the cutting edge by providing a series of rapidly recurring electrical spark discharges in a gap located between the tool edge and a counterface. The spark discharges vaporize and melt the tool edge to form a desired radius. | 03-03-2011 |
| 20110100960 | ION SPECTROMETRIC MULTIPOLE ROD SYSTEMS MADE BY WIRE EROSION - A method for fabricating a multipole system from a composite, comprising metal and insulating components rigidly fastened together, includes spark erosion cutting with a moving wire cathode to create a solid block whose metal pole faces are accurately parallel to one another. | 05-05-2011 |
| 20110108526 | METHOD OF MANUFACTURING IMPELLER FOR CENTRIFUGAL ROTATING MACHINE - A method for manufacturing an impeller of a centrifugal rotating machine that is approximately disk-shaped and in which flow passages are formed between a plurality of blades and disposed in a radial manner from the inner circumferential side to the outer circumferential side, provided with: a first flow passage formation step that forms a first region on the outer circumferential side within the flow passage by inserting an electrode of a shape fitting to the flow passage with the electric discharge machining method from the outer circumferential side of the disk-shaped body having an outer shape of an impeller; and a second flow passage formation step that forms a second region on the inner circumferential side within the flow passage from the inner circumferential side of the disk-shaped body. | 05-12-2011 |
| 20110114605 | Advanced flushing for workpiece erosion - The hand-held electro-discharge device to remove boluses of material from a workpiece. In some implementations a conductive electrode and its supporting ground pin are immersed in a dielectric fluid contained in a hood or cavity near or at the electrode's distal tip an removably sealed to a conductive workpiece. A flushing inlet and outlet in fluid communication with said hood provide a flushing fluid, which may also be a dielectric fluid to remove FOD and cool. | 05-19-2011 |
| 20110132876 | ARTICLE HAVING DIFFUSER HOLES AND METHOD OF MAKING SAME - The diffusion opening in the cooling hole of an airfoil is formed by an EDM process in which the outwardly flaring sidewalls of the opening, rather then having surfaces that are approximated to be smooth by having many small ribs formed therein, are formed with a relatively few ribs with both longitudinally extending and radially extending surfaces that are substantially greater in dimension than those as normally formed. In this manner, the machining process is simplified and expedited, while at the same time, the cooling efficiency is increased. | 06-09-2011 |
| 20120037601 | MAINTENANCE SYSTEM FOR WIRE TRANSPORT SYSTEM OF WIRE DISCHARGE PROCESSING MACHINE - The tension measuring unit that measures a physical amount corresponding to tension of a wire in a wire transport system, the fluctuation recording unit that records the physical amount measured by the tension measuring unit, the fluctuation analysis unit that obtains an average value, variation, and frequency analysis data of the recorded physical amount as an analysis result of the physical amount, the maintenance necessity determining unit that compares the analysis result with a reference value and determines whether maintenance is needed based on a comparison result and the display unit that displays a determination result are included, and it is made possible to accurately determine the time for maintenance for various components used in the wire transport system without using a measuring instrument. | 02-16-2012 |
| 20120175349 | MANUFACTURING METHOD OF ELECTRODE FOR HONEYCOMB STRUCTURE FORMING DIE - By providing a manufacturing method of an electrode for a honeycomb structure forming die including: arranging a plurality of processing electrodes | 07-12-2012 |
| 20120193326 | METHOD OF CUTTING OUT PART WITH MAKING PARTIALLY WELDED SPOTS IN WIRE-CUT ELECTRICAL DISCHARGE MACHINING - A method of cutting out a part from a workpiece with making partially welded spots in wire electrical discharge machining to keep the part against falling apart away from the workpiece. There is no need to cut anew the welded spot left as in the conventional process. The cut-out parts are cut off at a time after breakage of the welded spots caused by an external impact. The electric processing condition applied across an inter-electrode space between the wire electrode and the workpiece is changed from a cutting phase to a welding phase in which the wire electrode is fused partially at some spots along a cutting path of a predetermined contour on the workpiece to weld together the cut-out part and the workpiece at the fused spot on the wire electrode. | 08-02-2012 |
| 20120211470 | SPLIT RING COMPONENT - A method of splitting a ring, such as a cage, for a bearing, such as a roller or ball bearing, includes splitting a ring in such a way that there are provided projections and recesses in the facing surfaces thereby produced. In this manner, the two halves of the split ring may be reassembled in opposite orientation so that the projections on the facing surfaces of the two halves of the ring engage one another to space the two halves of the ring apart and to restore the ring to a circular ring shape despite some of the material of the ring having been removed in the splitting process. | 08-23-2012 |
| 20120223056 | METHOD FOR MAKING GROOVES ON A LUMINAL SURFACE OF AN INTRAVASCULAR STENT - The invention relates to methods and apparatus for manufacturing intravascular stents wherein the intravascular stent has its inner surface treated to promote the migration of endothelial cells onto the inner surface of the intravascular stent. In particular, the inner surface of the intravascular stent has at least one groove formed therein. | 09-06-2012 |
| 20130043218 | MULTI-WIRE CUTTING FOR EFFICIENT MAGNET MACHINING - Methods and apparatus for rapidly and efficiently machining rare earth magnets are disclosed. In particular various embodiments of multi-wire electrical discharge machining and wire saw machines are described that can allow for significant time savings, thereby allowing integration of a wire cutting process into a high volume production scale operation. | 02-21-2013 |
| 20130168364 | GO/NO GO BALL FEELER GAUGE FOR PARTS CHECKING JIGS AND METHOD - A go/no go ball feeler gauge includes a ball that is laser-welded to a rod. The rod is preferably cut utilizing an EDM process to provide a flat end to which the metal ball is laser-welded. Also, the metal ball is selected to have an initial size that is about 2 microns less than a final required size, and the laser welding process causes the ball to expand to the required diameter. | 07-04-2013 |
| 20130206733 | EDM METHOD FOR MULTI-LOBED COOLING HOLE - A method for forming a cooling hole extending from an inlet on a first surface of a wall to an outlet on a second surface of the wall includes forming a diffusing section of the cooling hole, and a trailing edge on the outlet by electrical discharge machining, and forming longitudinal lobes in the diffusing section. The metering section extends from the inlet on a first surface of the wall towards the second surface of the wall. The diffusing section extends from the outlet to one end of a metering section located between the inlet and the outlet. The outlet is substantially linear or convex at the trailing edge and the lobes are separated by longitudinal ridges. | 08-15-2013 |
| 20130248495 | ELECTRICAL DISCHARGE MACHINING - A method for electrical discharge machining a workpiece includes the steps of: presenting an elongate electrode to the workpiece with a spark gap therebetween; flowing a dielectric fluid in the gap; eroding the workpiece by electrical discharge between the tip of the electrode and the workpiece; displacing the electrode in a direction aligned with the long axis of the electrode to maintain the gap as the electrode wears and the workpiece is eroded; and simultaneously with the displacement, producing vibratory movement of the electrode, the vibratory movement being aligned with the long axis of the electrode. | 09-26-2013 |
| 20140001159 | ADAPTIVE FLUSHING FOR WORKPIECE EROSION | 01-02-2014 |
| 20140042128 | ELECTRIC DISCHARGE MACHINING PROCESS, ARTICLE FOR ELECTRIC DISCHARGE MACHINING, AND ELECTRIC DISCHARGE COOLANT - An electric discharge machining process, an article for electric discharge machining, and an electrically-conductive electric discharge machining coolant are disclosed. The electric discharge machining process includes electric discharge machining a target region of a component. The article includes a non-electrically-conductive layer, an electrically-conductive layer, and a target region on the non-electrically-conductive layer. The electrically-conductive electric discharge machining coolant includes a hydrocarbon liquid and carbon powder suspended within the hydrocarbon liquid. | 02-13-2014 |
| 20140097157 | COMBINED METHOD FOR DRILLING A LAYER SYSTEM, IN WHICH MECHANICAL WORKING AND EDM WORKING ARE PERFORMED - A method including mechanical removal and electrical discharge machining (EDM) working allowing symmetrical or asymmetrical holes to be produced with exact contours in a layer system including a metallic substrate and a non-metallic outermost layer is provided. In a first step, an outer region of the hole is worked by mechanical removal. In a final method step, when the underlying substrate or a metallic adhesion promoting layer has been reached an electrical discharge machining tool is used. | 04-10-2014 |
| 20140144886 | METHODS OF MANUFACTURING SUPERHARD BEARING ELEMENTS - In an embodiment, a bearing assembly includes superhard bearing elements distributed circumferentially about an axis. At least one of the superhard bearing elements may include a first arcuate end portion, a second arcuate end portion, a first substantially planar face, a second substantially planar face, and a bearing surface. The first and second arcuate end portions may be generally opposite each other. The first substantially planar face may extend between the first and second arcuate end portions. The second substantially planar face may be generally opposite the first substantially planar face. The first substantially planar face may have a length greater than a length of the second substantially planar face. The bearing surface may extend between the first arcuate end portion, the second arcuate end portion, the first substantially planar face, and the second substantially planar face. The bearing assembly includes a support ring that carries the superhard bearing elements. | 05-29-2014 |
| 20140175064 | CUSTOMIZED AND VARYING CROSS-SECTION ELECTRODES - Erosion electrodes and associated devices, systems, and methods for providing improved performance during a process driven by FEED and facilitated by fluid flushing of a worksite is disclosed. Use of erosion electrodes having varying cross-sectional geometries result in customizable channels, within which the FEED process may proceed, improving efficiency and efficacy of the process as the erosion electrode is advanced longitudinally into a work-piece. | 06-26-2014 |
| 20140183165 | EROSION DEVICE AND EROSION METHOD FOR MACHINING HOLLOW-CYLINDRICAL WORKPIECES - An erosion device and a corresponding method are disclosed for machining a hollow-cylindrical workpiece, wherein the device is elongated and/or formed in the manner of a tube or cylinder and is characterized in that at least two rotationally acting drives (A | 07-03-2014 |
| 20140202992 | Method of Producing Injection-Molding Die for Worm Wheel, and Method of Producing Worm Wheel - A worm wheel is provided in which a step is not formed near a tooth face meshing with a worm, and noise does not easily occur during power transmission. | 07-24-2014 |
| 20150021299 | Batch Methods of Forming Microscale or Millimeter Scale Structures Using Electro Discharge Machining Alone or In Combination with Other Fabrication Methods - Embodiments are directed to forming three-dimensional millimeter scale or micro-scale structures from single or multiple sheets or layers of material via electro discharge machining (EDM). In some embodiments, the electrodes are formed by single layer or multi-layer, single material or multi-material deposition processes. In some embodiments single electrodes form a plurality of parts or structures simultaneously. In some embodiments a sacrificial bridging material is used to hold parts together during and after EDM processing. | 01-22-2015 |
| 20150034603 | METHOD FOR COMPONENT MACHINING BY ABLATION AND CONTROLLED RECAST LAYER REMOVAL BY FLUORIDE ION CLEANING - Components, such as turbine blades or vanes, are formed to a desired shape and dimensions by ablation machining a work piece surface. Recast layer material created on the work piece surface during the ablation machining is subsequently removed by fluoride ion cleaning (FIC). Exemplary ablation machining methods include laser machining and electric discharge machining (EDM). The work piece material may include superalloys commonly used for fabrication of turbine blades or vanes, which are susceptible to recast layer formation during EDM or laser machining. Post ablation FIC recast layer removal is easier than known methods, such as mechanical grinding, secondary EDM machining of the layer at lower speeds and/or current intensity, or chemical etching processes. Ablation machining processes can be optimized for speed and efficiency without regard for recast layer avoidance, with knowledge that the recast layer will be subsequently removed by the complimentary FIC process. | 02-05-2015 |
| 20150102015 | METHOD OF SEPERATING FASTENER SHANKS FROM HEADS OR FRAMES - A device and method for removal of fasteners by Electro-discharge Machining (EDM) such that portions of the fastener, such as a flange, may be separated from other portions of the fastener, such as a shank. | 04-16-2015 |
| 20160039026 | ELECTRODE FOR ELECTRICAL DISCHARGE MACHINING AND METHOD FOR MANUFACTURING HONEYCOMB STRUCTURE FORMING DIE - An electrode for electrical discharge machining which makes it possible to form slits of a honeycomb structure forming die so that a slit width on a front surface side is smaller than a slit width on a back hole side is provided. The electrode for electrical discharge machining includes: plural plate-shaped discharge portions with a thickness that is gradually increased toward tips thereof; and a plate-shaped support portion to which end portions of the plural discharge portions on a side opposite to the tips are connected, wherein a difference between a thickness of the tip; and a thickness of the end portion on the side opposite to the tip ranges from μm to 500 μm in the discharge portion. | 02-11-2016 |
| 20160146014 | MODIFIED BUCKET PLATFORMS OF TURBINE BUCKETS AND METHODS FOR MODIFYING BUCKET PLATFORMS OF TURBINE BUCKETS - Methods for modifying bucket platforms of turbine buckets include removing a portion of the bucket platform to form a void, wherein the void comprises a predetermined geometry, and adding a filler material in a plurality of layers to fill the void. | 05-26-2016 |
| 20160177747 | CHANNEL MARKER AND RELATED METHODS | 06-23-2016 |
| 20190143433 | COUPLING DEVICE | 05-16-2019 |
