Patents by Inventor Yuanfeng Luo

Yuanfeng Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200016673
    Abstract: An electrode applied in electro-machining processes, where the electrode includes a main body portion and at least one built-in internal flushing passage for introducing a flushing liquid to a volume between the electrode and a workpiece to be machined. The electrode is made by an additive fabrication process that enables specialized flushing for enhancing waste material evacuation and incorporate special material properties like zones of high electrical conductivity and thermal resistance. The fabrication process produces materials and geometries that could not otherwise be made using conventional processing.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 16, 2020
    Inventors: Andrew Lee Trimmer, Yuanfeng Luo, Bin Wei, John Broddus Deaton
  • Publication number: 20190270152
    Abstract: Electrode for an electro-erosion process, includes a shaft, a body coupled to the shaft, a plurality of machining-inserts, an insulated layer, and a flushing cover disposed on the body and coupled to the shaft. The shaft includes a channel, a plurality of first openings and second openings, where each opening is connected to the channel. The body includes a plurality of main-flushing channels, where each channel is connected to a corresponding first opening. The plurality of machining-inserts is spaced apart from each other along a circumferential direction and detachably coupled to a peripheral end portion of the body. Each machining-insert includes at least one third opening connected to a corresponding main-flushing channel. The insulated layer is disposed on top and bottom surfaces of the body. The flushing cover includes a plurality of side-flushing channels and a plurality of fourth openings, where each channel is connected to a corresponding second opening.
    Type: Application
    Filed: May 20, 2019
    Publication date: September 5, 2019
    Inventors: Yuanfeng Luo, Andrew Lee Trimmer, Bernard Adel Ibrahim, Dale Robert Lombardo, John Anthony Vogel
  • Patent number: 10399165
    Abstract: An electrode applied in electro-machining processes, where the electrode includes a main body portion and at least one built-in internal flushing passage for introducing a flushing liquid to a volume between the electrode and a workpiece to be machined. The electrode is made by an additive fabrication process that enables specialized flushing for enhancing waste material evacuation and incorporate special material properties like zones of high electrical conductivity and thermal resistance. The fabrication process produces materials and geometries that could not otherwise be made using conventional processing.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 3, 2019
    Assignee: General Electric Company
    Inventors: Andrew Lee Trimmer, Yuanfeng Luo, Bin Wei, John Broddus Deaton
  • Patent number: 10363622
    Abstract: Electrode for an electro-erosion process, includes a shaft, a body coupled to the shaft, a plurality of machining-inserts, an insulated layer, and a flushing cover disposed on the body and coupled to the shaft. The shaft includes a channel, a plurality of first openings and second openings, each opening connected to the channel. The body includes a plurality of main-flushing channels, where each channel is connected to a corresponding first opening. The plurality of machining-inserts is spaced apart from each other along a circumferential direction and detachably coupled to a peripheral end portion of the body. Each machining-insert includes at least one third opening connected to a corresponding main-flushing channel. The insulated layer is disposed on top and bottom surfaces of the body. The flushing cover includes a plurality of side-flushing channels and a plurality of fourth openings, where each channel is connected to a corresponding second opening.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 30, 2019
    Assignee: General Electric Company
    Inventors: Yuanfeng Luo, Andrew Lee Trimmer, Bernard Adel Ibrahim, Dale Robert Lombardo, John Anthony Vogel
  • Publication number: 20190143431
    Abstract: Tool electrodes for and methods of electrical discharge machining are provided. In one exemplary aspect, a tool electrode for machining features into a workpiece is provided that allows for increased machining speed without sacrificing the quality of the machined features. Moreover, a tool electrode is provided that eliminates or reduces the high cost associated with customized tool electrodes. In particular, a tool electrode is provided that includes a plurality of electrode elements arranged and spaced apart in a digitized matrix representative of a tooling shape for machining features into a workpiece. The plurality of electrode elements are spaced apart from one another and arranged in the digitized matrix by digitizing an analog electrode tool configured to machine the feature into the workpiece or a volume of the feature to be machined into the workpiece.
    Type: Application
    Filed: November 15, 2017
    Publication date: May 16, 2019
    Inventors: Yuefeng Luo, Nouman Usmani, Yuanfeng Luo
  • Publication number: 20180272449
    Abstract: A machining apparatus is disclosed, which includes a curved outer conduit, a curved rotary electrode and a driving motor. The outer conduit has a cavity and a fluid inlet in fluid communication with the cavity. The electrode includes a flexible shaft positioned in the cavity and having a first end and a second end, and a machining head having a fluid outlet in fluid communication with the cavity and electrically connected with the first end of the flexible shaft to be powered via the flexible shaft. The motor is mechanically coupled to the second end of the flexible shaft for driving the flexible shaft to rotate. A machining system is also disclosed, which includes the machining apparatus, a power supply for powering the flexible shaft, an electrolyte supply for providing electrolyte to the fluid inlet and a machine tool onto which the outer conduit and the motor are positioned.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 27, 2018
    Inventors: Yuanfeng LUO, Yong WU, Paolo MOLA, Dragan FILIPOVIC
  • Publication number: 20180236579
    Abstract: A multi-loop controller component for an electric discharge machining (EDM) system includes a plurality of power loop circuits coupled to an output of a power supply of the EDM system and configured to receive DC electric power from the power supply. Each power loop circuitis electrically-isolated from other power loop circuits. The multi-loop controller component also includes a plurality of transistors. Each transistor is coupled to a respective power loop circuit and is configured to switch between an ON state and an OFF state to generate a pulse of the DC electric power through the respective power loop circuit. In addition, the multi-loop controller component has a drive controller coupled to the plurality of transistors. The drive controller is configured to transmit at least one control signal to at least one of the transistors to facilitate switching the transistor between the ON state and the OFF state.
    Type: Application
    Filed: February 23, 2017
    Publication date: August 23, 2018
    Inventors: Yuanfeng Luo, Yuefeng Luo, Dale Robert Lombardo, Steven Robert Hayashi
  • Publication number: 20180229319
    Abstract: An electric discharge machining (EDM) system includes an electrode set having a plurality of electrodes. Each electrode is electrically-isolated from the other electrodes. The EDM system includes a power supply configured to generate an electric discharge between a workpiece and the electrode set to remove material from the workpiece. The power supply includes a multi-loop driver system and an AC-to-DC component that outputs DC electric power. The multi-loop driver system includes a plurality of power loop circuits coupled to an output of the AC-to-DC component. Each power loop circuit is electrically-isolated from other power loop circuits and is coupled to at least one electrode. The multi-loop driver system includes a drive controller coupled to the power loop circuits. The drive controller is configured to transmit at least one control signal to at least one power loop circuit to drive the AC-to-DC component to generate the electric discharge.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 16, 2018
    Inventors: Yuanfeng Luo, Richard Leigh Adrian, Allan Richard Bridges, Nouman Usmani
  • Patent number: 10022812
    Abstract: A method of machining a work-piece formed of titanium-based material, using a machining apparatus, is described. The method includes the steps of providing an electrically-conductive electrode contained within a spindle assembly, in a pre-selected distance and position relative to the titanium-based work-piece; while electrically powering the electrode and the work-piece with a power supply. In the process, fluid electrolyte is circulated through at least two pathways in the machining apparatus—an internal conduit within the spindle assembly; and an external conduit. The charged electrode is moved relative to the work-piece in a plunging motion, to remove material from the work-piece at a relatively high rate, using a high-speed electro-erosion (HSEE) process.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: July 17, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Yuanfeng Luo, Steven Robert Hayashi, Andrew Lee Trimmer, Mark James Cintula
  • Publication number: 20180093337
    Abstract: Electrode for an electro-erosion process, includes a shaft, a body coupled to the shaft, a plurality of machining-inserts, an insulated layer, and a flushing cover disposed on the body and coupled to the shaft. The shaft includes a channel, a plurality of first openings and second openings, where each opening is connected to the channel. The body includes a plurality of main-flushing channels, where each channel is connected to a corresponding first opening. The plurality of machining-inserts is spaced apart from each other along a circumferential direction and detachably coupled to a peripheral end portion of the body. Each machining-insert includes at least one third opening connected to a corresponding main-flushing channel. The insulated layer is disposed on top and bottom surfaces of the body. The flushing cover includes a plurality of side-flushing channels and a plurality of fourth openings, where each channel is connected to a corresponding second opening.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Yuanfeng Luo, Andrew Lee Trimmer, Bernard Adel Ibrahim, Dale Robert Lombardo, John Anthony Vogel
  • Patent number: 9925609
    Abstract: A drilling tool for use in machining a conductive work piece is provided. The tool includes a body portion, a forward electrode coupled to the body portion, and at least one side electrode coupled to the body portion. When electric current is supplied to the forward electrode and the at least one side electrode, material adjacent to the forward electrode and the at least one side electrode is removed from the conductive work piece. Further, the forward electrode and the at least one side electrode are selectively operable to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: March 27, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Andrew Lee Trimmer, Edward James Nieters, Yuanfeng Luo, Robert Frank Hoskin, Jeremy Gordon McNamara, Timothy Michael Moricca
  • Publication number: 20180065200
    Abstract: An electrical machining method comprises machining a workpiece by an electrical machining device comprising an electrode; increasing a feedrate of the electrode at a first acceleration if a discharge current passing through the electrode and the workpiece is lower than a discharge current reference; and decreasing the feedrate of the electrode at a second acceleration if the discharge current is higher than the discharge current reference, wherein the second acceleration has an absolute value higher than that of the first acceleration.
    Type: Application
    Filed: July 25, 2017
    Publication date: March 8, 2018
    Inventors: Dong LIU, Andrew Lee TRIMMER, Yuanfeng LUO, Steven Robert HAYASHI
  • Publication number: 20170144239
    Abstract: The polishing system includes a power supply. The polishing system also includes a container including an interior portion. The interior portion includes a conductive material thereon. The conductive material is electrically coupled to the power supply. The polishing system also includes an electrolytic solution disposed within the container. The electrolytic solution includes a plurality of abrasive particles. The polishing system further includes a flexible media disposed within the container. The container is configured to contain an object. The power supply configured to electrically couple to the object. Each of the electrolytic solution, the flexible media, and the abrasive particles is configured to partially polish the object substantially simultaneously.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 25, 2017
    Inventors: Yuanfeng Luo, Steven Robert Hayashi, Adegboyega Masud Makinde, Andrew Lee Trimmer
  • Publication number: 20170028491
    Abstract: A drilling tool for use in machining a conductive work piece is provided. The tool includes a body portion, a forward electrode coupled to the body portion, and at least one side electrode coupled to the body portion. When electric current is supplied to the forward electrode and the at least one side electrode, material adjacent to the forward electrode and the at least one side electrode is removed from the conductive work piece. Further, the forward electrode and the at least one side electrode are selectively operable to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 2, 2017
    Inventors: Andrew Lee Trimmer, Edward James Nieters, Yuanfeng Luo, Robert Frank Hoskin, Jeremy Gordon McNamara, Timothy Michael Moricca
  • Publication number: 20160346856
    Abstract: An electroerosion machining system for trepanning and drilling operations is disclosed. The electroerosion machining system includes an electrode assembly configured to machine a desired configuration in a workpiece, a power supply configured to energize the electrode assembly and the workpiece to opposite electrical polarities, an electrolyte supply configured to pass an electrolyte between the electrode assembly and the workpiece, a working apparatus configured to move the electrode assembly relative to the workpiece, and a control system to control the power supply and the working apparatus. The electrode assembly further includes an electrode body in the form of a tube-shaped body, the tube-shaped body defining a hollow interior and one or more replaceable inserts affixed to the electrode body at a working end thereof positioned adjacent the workpiece, the one or more replaceable inserts constructed so as to be selectively attachable and detachable from the working end of the electrode body.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 1, 2016
    Inventors: Yuanfeng Luo, Steven Robert Hayashi, Andrew Lee Trimmer, Dale Robert Lombardo, John Anthony Vogel
  • Publication number: 20160346855
    Abstract: A method for electroerosion machining includes providing an electrode assembly comprising an electrode body having a tube-shaped body that defines a hollow interior and one or more inserts affixed to the electrode body to form a cutting surface on the electrode assembly, positioning the electrode assembly adjacent a workpiece to be machined, and providing power to the electrode assembly so as to energize the electrode assembly, with the electrode assembly and the workpiece being at opposite electrical polarities. The method also includes advancing the electrode assembly through the workpiece, with a working gap being maintained between the inserts and the workpiece across which a pulse electric current is passed to remove material from the workpiece, wherein, upon advancing the electrode assembly through the workpiece, a core is formed that is completely separated from a remainder of the workpiece and is contained within the hollow interior of the electrode body.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 1, 2016
    Inventors: Yuanfeng Luo, Steven Robert Hayashi, Andrew Lee Trimmer, Dale Robert Lombardo, John Anthony Vogel
  • Patent number: 9416462
    Abstract: A machining system for machining a workpiece is provided. The machining system comprises a machine tool, a plurality of cutting tools, a CNC controller. The plurality of cutting tools comprises an electrode and a conventional cutting tool exchangeably disposed on the machine tool. The machining system further comprises a power supply, a process controller, and an electrolyte supply, wherein the machine tool, the electrode, the CNC controller, the power supply, the process controller and the electrolyte supply are configured to cooperate to function as an electroerosion machining device, wherein the machine tool, the CNC controller, the conventional cutting tool and the electrolyte supply are configured to cooperate to function as a conventional machining device, and wherein the machining system is configured to function alternately as the electroerosion machining device and the conventional machining device.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: August 16, 2016
    Assignee: General Electric Company
    Inventors: Yimin Zhan, Yuanyuan Guo, Yuanfeng Luo, Renewi Yuan, Zhixue Peng, Garth M. Nelson, Massimo Arcioni, Francescosaverio Chiari, Hongtao Li
  • Publication number: 20160101479
    Abstract: A method of machining a work-piece formed of titanium-based material, using a machining apparatus, is described. The method includes the steps of providing an electrically-conductive electrode contained within a spindle assembly, in a pre-selected distance and position relative to the titanium-based work-piece; while electrically powering the electrode and the work-piece with a power supply. In the process, fluid electrolyte is circulated through at least two pathways in the machining apparatus—an internal conduit within the spindle assembly; and an external conduit. The charged electrode is moved relative to the work-piece in a plunging motion, to remove material from the work-piece at a relatively high rate, using a high-speed electro-erosion (HSEE) process.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 14, 2016
    Inventors: Yuanfeng Luo, Steven Robert Hayashi, Andrew Lee Trimmer, Mark James Cintula
  • Publication number: 20160008952
    Abstract: A computer-implemented method for forming a three-dimensional workpiece from a block of material using a fluid jet cutting device is implemented by a fabrication system. The method includes receiving an indication of the geometry of the workpiece and generating a three-dimensional tool path to control a cutting head to form the workpiece. Generating the tool path includes receiving an indication of a desired cutting surface on the workpiece, determining a length of the cutting surface, and designating a plurality of waypoints along an edge of the cutting surface. Generating the tool path also includes determining at least one geometric parameter of the cutting surface at each waypoint of the plurality of waypoints, and calculating a speed of the cutting head at each waypoint of the plurality of waypoints based on the determined geometric parameter such that the speed of the cutting head varies along the cutting surface length.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 14, 2016
    Inventors: Yuanfeng Luo, Erik Karl Jacobson, Jane Marie Lipkin, Jeremy Gordon McNamara, Donovan Orlando Buckley
  • Publication number: 20150354361
    Abstract: A rotor assembly is provided. The rotor assembly includes a rotor shaft and at least one blisk integrally formed with the rotor shaft. The at least one blisk includes an inner rim extending circumferentially about the rotor shaft, and a plurality of blades extending radially outward from the inner rim, wherein the rotor shaft and the at least one blisk are defined from a single billet of material.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 10, 2015
    Inventors: Douglas Carl Hofer, Yuanfeng Luo, Edip Sevincer, Ganesh Krishnamoorthy, Chiranjeev Singh Kalra