AN APPARATUS FOR SUPPLYING WORKING FLUID AND A WIRE ELECTRODE TO A WORKPIECE IN A WIRE ELECTRODE SPARK EROSION MACHINE

    公开(公告)号:GB2116894A

    公开(公告)日:1983-10-05

    申请号:GB8302955

    申请日:1983-02-03

    Inventor: INOUE KIYOSHI

    Abstract: Apparatus for supplying a working fluid and a wire electrode to a wire region of a wire-cut electrical discharge machine comprising a housing supported by a support member and having opposed aligned openings through which a wire electrode is passed into operation association with a workpiece at the work region to be operated on by the electrode. A working fluid is supplied under pressure into the housing and the working fluid passes through a nozzle supported in the housing against the workpiece. The nozzle is positioned in the housing to surround the wire electrode which travels therethrough and it projects from the housing to discharge the working fluid against the workpiece at a gap formed therewith. A guide die is supported in the housing to guide the wire electrode through the housing and the nozzle. Electrical energy is supplied to the wire electrode before it enters the housing and a second nozzle is supported by the housing to discharge working fluid against the electrical supply system to cool the same.

    62.
    发明专利
    未知

    公开(公告)号:DE3310993A1

    公开(公告)日:1983-09-29

    申请号:DE3310993

    申请日:1983-03-25

    Inventor: INOUE KIYOSHI

    Abstract: An improved machining method and electrode for use in the traveling-wire EDM process utilizing an aqueous machining fluid medium which is decomposed by erosive electrical discharges into gaseous oxygen and hydrogen. Breakage of the traveling-wire electrode is reduced or eliminated through the use of an improved electrode element comprising a continuous electrode wire substrate and a layer of a polymeric substance having a temperature of thermal decomposition of 100 DEG to 500 DEG C. attached thereto in a distributed manner such as to partially cover the surface of the substrate. The improved electrode element traveling in machining juxtaposition with the workpiece is subjected to the electrical discharges to cause a thermal decomposition of the polymeric substance to form carbon and to allow the gaseous oxygen and hydrogen at least partially to be chemically combined therewith and to reduce the amount of the oxygen gases in the machining gap which tend to cause a continuous arc discharge or explosion as a cause of the wire breakage. The improved elongate element should preferably contain a hydrogen active catalytic metal, e.g. Li, Cs or Sm, having a spectrographic wavelength of 300 to 600 nm to facilitate chemical reaction of carbon with oxygen and hydrogen in the gap.

    63.
    发明专利
    未知

    公开(公告)号:DE3229479A1

    公开(公告)日:1983-03-31

    申请号:DE3229479

    申请日:1982-08-06

    Inventor: INOUE KIYOSHI

    Abstract: A method of and apparatus for electrodepositing a metal upon a substrate having one or more recesses of substantial depth to form the metal deposit throughout the surfaces and in the recesses as well. An electrode assembly comprises an elongate anode and a tubular insulator traversed by the elongate anode so that the insulator partially covers the lateral surface of the electrode which is movable in its longitudinal direction. The electrode assembly is positioned to dispose a forward end portion thereof in the recess and to position the tubular insulator on the elongate anode so as to allow only a forward end face portion of the anode to be substantially exposed and the face portion to be juxtaposed with a floor portion of the substrate in the recess. An electrodepositing solution is supplied into the recess and an electric current is passed between the anode and the substrate to permit the metal from the solution to be selectively electrodeposited on the floor portion. Subsequently, the tubular insulator is gradually withdrawn while permitting the elongate anode to remain stationary to progressively increase the lateral area of the elongate anode exposed from the insulator, thereby progressively displacing the region of electrodeposition on the wall surface in the recess.

    ELECTRODEPOSITING A METAL IN A RECESS

    公开(公告)号:GB2104917A

    公开(公告)日:1983-03-16

    申请号:GB8222633

    申请日:1982-08-05

    Inventor: INOUE KIYOSHI

    Abstract: A method of and apparatus for electrodepositing a metal upon a substrate having one or more recesses of substantial depth to form the metal deposit throughout the surfaces and in the recesses as well. An electrode assembly comprises an elongate anode and a tubular insulator traversed by the elongate anode so that the insulator partially covers the lateral surface of the electrode which is movable in its longitudinal direction. The electrode assembly is positioned to dispose a forward end portion thereof in the recess and to position the tubular insulator on the elongate anode so as to allow only a forward end face portion of the anode to be substantially exposed and the face portion to be juxtaposed with a floor portion of the substrate in the recess. An electrodepositing solution is supplied into the recess and an electric current is passed between the anode and the substrate to permit the metal from the solution to be selectively electrodeposited on the floor portion. Subsequently, the tubular insulator is gradually withdrawn while permitting the elongate anode to remain stationary to progressively increase the lateral area of the elongate anode exposed from the insulator, thereby progressively displacing the region of electrodeposition on the wall surface in the recess.

    METHOD OF AND APPARATUS FOR ELECTRICAL DISCHARGE MACHINING USING A GAS-DISSOLVED WATER LIQUID

    公开(公告)号:GB2103984A

    公开(公告)日:1983-03-02

    申请号:GB8221190

    申请日:1982-07-22

    Inventor: INOUE KIYOSHI

    Abstract: A novel EDM method is disclosed in which a gas such as compressed air is dissolved in a water liquid to form a solution which is pumped into the machining gap formed between a tool electrode and a workpiece. An EDM power supply provides a succession of electrical discharges across the gap through the supplied solution to electroerosively remove stock from the workpiece with the decomposition of oxygen and hydrogen gases from the water liquid. The dissolved gas in the solution is liberated in the machining gap upon exposure to the electrical discharges to add to these gases, thereby increasing the electroerosive stock removal. The gas is dissolved into the water in an amount of at least 20% by volume of the oxygen and hydrogen gases normally decomposed from the water liquid by the electrical discharges. An apparatus for executing the method includes a pressure chamber traversed by the pumped flow of the water liquid and having a gas supply inlet through which the compressed gas is introduced for solubilization in the water liquid. The region of the machining gap is preferably enclosed in a second pressure chamber maintained under a superatmospheric pressure to limit the spontaneous liberation of the dissolved gas from the water liquid.

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