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4633053 |
Electrical discharge machine with automatically replaceable electrodes
An electrical discharge machine with automatically replaceable electrodes. The machine includes an electrode holder with a clamp operable to alternately receive and release an electrode, an...
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4625085 |
Material for high frequency suppression and distributor for combustion engine composed of the same material
A distributor having electrodes made of a sintered body composed of a composite material such that the distributor can suppress radio noises to thereby prevent electric interference. The material...
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4618761 |
Electrode cutting apparatus for wire cut electric discharge machine
A wire electrode cutting apparatus for use in a wire-cut electric discharge machine mounted between a supply section for the wire electrode and a pulling section therefor, and comprising a device...
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4596066 |
Machining center
A machining center or system for shaping workpieces, having a numerical controller (NC) for transmitting control commands in accordance with input data. A principal tool has a tool holder and a...
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4584451 |
Wire EDM with guide member changer
A machining center utilizing a traveling-electrode EDM machine in which a thin, continuous electrode element is supplied, transported, guided over a guide member and taken up to provide a...
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4565914 |
Method and apparatus for demounting a spot welded metal plate
A method and apparatus for demounting a metal plate spot welded to a metal member. In accordance with the method, a hollow electrode rod is placed in opposition to the periphery of a spot weld...
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4553012 |
Electrical discharge surface conditioning device
An electric discharge surface conditioning apparatus includes a discharge electrode comprised of an assembly of alternating conductive and non-conductive discs which rotate about an axis. The...
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4549061 |
Electrical discharge machining apparatus for producing threaded holes
A device adapted for use with electrical discharge machining apparatus generates tapped holes in a workpiece using a threaded, hollow carbon tool. The tool is releasably connected to a reversible...
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4544139 |
Coated exothermic cutting electrode
An exothermic cutting electrode or burning bar provided with a coating containing oxidizing material, arc stabilizing material and a binder with portions of reduced coating thickness along the...
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4544820 |
Die forming method and machine
A method and machine for forming a complete stamping die. A material erosion machining apparatus with a movable work table assembly and an extractor is used to draw a male punch from a female die...
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4543460 |
Generic electrode EDM method and apparatus, and assembly for maintaining chip concentration in the gap at an enhanced level
An EDM method and apparatus, utilizing a generic electrode, i.e. a tool electrode independent in shape of a desired cavity or contour to be machined in a workpiece, and utilizing a...
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4538043 |
Water shield for a metal disintegrator device
Water shield (38) provided for a metal piece disintegrator (10) of the type having a longitudinally extending quill (12) holding a longitudinally extending electrode (16) at one end (14). A...
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4536632 |
Wire-cut electroerosion method and apparatus utilizing wire-cleaning means
Wire-cut electroerosion method and apparatus whereby breakage of an electrode wire is substantially prevented by limiting air-bubbling in the cutting zone from the electrode wire traveling through...
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4532703 |
Method of preparing composite superconducting wire
An improved method of preparing composite multifilament superconducting wire of Nb 3 Sn in a copper matrix which eliminates the necessity of coating the drawn wire with tin. A generalized...
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4524259 |
Print hammer assembly method
The impact pins of a matrix printhead are brazed by a laser to a print hammer of the flat spring type. The print hammers are then attached to a printhead mounting block adjacent to each other with...
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4510368 |
High speed electric arc saw and method of operating same
An electric arc saw and a method for operating the saw for cutting or slitting metallic objects by melting a narrow kerf into the object. The method provides for determining the minimum threshold...
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4508604 |
Traveling-wire EDM method
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...
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4506129 |
Apparatus for processing a broken wire electrode used during electro-discharge machining
In an apparatus for processing a broken wire electrode in a wire-cut electric discharge machine for cutting a workpiece into a desired contour by electric discharge machining while the workpiece is...
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4504721 |
3D EDM method and apparatus utilizing a magnetic field
A method of and apparatus for electroerosively machining a 3D cavity in workpiece, in which a coil is wound on a tool electrode and energized by a current source to produce a magnetic field...
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4497101 |
Method and apparatus for the manufacture of a three-dimensional, shaped graphite electrode utilizing a three-dimensional, shaped file
The invention relates to an apparatus for manufacturing a three-dimensional, shaped graphite electrode (3) utilizing a three-dimensional, shaped file (4), moved toward one another (filing stroke)...
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4484053 |
Device for electrical discharge machining of a work in the form of a roll
There is disclosed a device for electrical discharge machining of a work in the form of a roll for providing a satinized indented surface by satinizing operation to a predetermined surface...
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4479044 |
Electrode assembly for travelling-wire electroerosion machine
A travelling-wire electro-erosion machine which has a head assembly comprising a tubular support formed with a plurality of roller guides positioned to define a path for a travelling wire forming...
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4476368 |
Inner wall tube disintegrator
A metal tube wall disintegrator is convertible in being able to disintegrate an arcuate or annular portion on the inner wall of the metal tube or to disintegrate merely one longitudinally extending...
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4475996 |
Multi-strand wire electroerosion machining method and apparatus
A multi-strand wire electroerosion machining method and apparatus are disclosed wherein a plurality of wires dispensed from respective wire sources are fed separately into a wire travel path and...
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4476369 |
EDM Method of and apparatus for machining cavities using a plurality of independently movable segmented electrodes
An EDM method of and apparatus for machining the surfaces of a cavity in an electrically conductive workpiece utilize an electrode assembly comprising a plurality of segmented electrodes having...
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4471200 |
Method for manufacturing tire molding metal molds with a two-stage electrical discharge machining process
A method of making a mold which is utilized to manufacture a tire, the mold having a contour curved surface with broad bone portions and narrow blade portions extending therefrom, comprises a first...
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4470896 |
Internal or external dielectric distributor for electrodes
A distributor for dielectric liquid adapted for positioning in the irrigation or degasing round holes of machining electrodes having a body either shaped to obturate the opening or square shaped so...
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4471199 |
EDM Of a roll using segmented electrode short-circuited in the rough machine step
There is disclosed a method for electrical discharge machining of a workpiece in the form of a roll by application of an electrical voltage across said workpiece and an electrode or electrodes...
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4467200 |
Device for the surface treatment of thermoplastic moldings by corona discharge
An electric discharge corona discharge device is disclosed which is useful for rendering of the surface of plastic molded parts capable of being adhesively bound to another part. The device...
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4461942 |
Apparatus for orienting the wire electrode support and guide member and the machining fluid nozzle of a travelling wire EDM apparatus
A unitary assembly supporting an electrode wire guide member and a machining fluid nozzle providing a jet of fluid coaxially disposed with the wire, in a travelling wire EDM apparatus. The unitary...
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4459453 |
Method of electrical-discharge-machining a conductive workpiece with a carbonaceous electrode
An EDM method utilizing an improved tool electrode made of a sintered carbonaceous body consisting essentially of 50 to 90% graphitized carbon and the balance nongraphitized carbon uniformly...
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4449027 |
Electrode mounting device
In an electrode mounting device having a fixed coupling member and a removable coupling member, one coupling member has positioning projections and the other coupling member has a groove or grooves...
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4441004 |
Multiple pipe element electrode assembly EDM method and apparatus
A multiplicity of conductive pipe elements are arranged in parallel with one another in mutually insulating relationship and are secured together in a cup to form a multiple electrode assembly. The...
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4430180 |
Apparatus for and method of electroerosively drilling a thin hole in a workpiece
An apparatus for and method of electroerosively drilling a thin hole, e.g. of 1 mm diameter, of a high depth-to-diameter ratio, e.g. 5 or more, in a workpiece with a tubular electrode of...
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4424432 |
Electrode material for travelling-wire type electrical discharge machining
A method of electrical machining by the travelling-wire EDM process is improved by utilizing as the wire electrode for increased removal rate and reduced wear an electrode material which is drawn...
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4423302 |
Digital drive apparatus for effecting control displacements in an electroerosive machine tool
A drive apparatus for effecting controlled displacement of a movable electrode relative to a counterelectrode along a predetermined axis in an electroerosive machine tool makes use of a feed screw...
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4418263 |
Electroerosive wire-cutting method and apparatus with a shaped wire electrode
A method of and an apparatus for electroerosively wire-cutting a conductive workpiece with a continuous wire electrode supported to extend and axially transported to move between a supply site and...
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4417962 |
Electroerosive machining method and apparatus with discrete metallic electrode bodies
A novel electroerosion machining method and apparatus makes use of an elongate, open-ended tubular casing of a heat-resistant material retaining therein discrete metallic bodies (e.g. granular...
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4416444 |
Underwater cutting rod
A tubular electrode for use in a cutting torch which is primarily used in underwater cutting operations comprising a cutting rod made from tubing produced by rolling and forming copper coated sheet...
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4409457 |
System for manufacturing tire molding metal molds with electrical discharge machining
A system for manufacturing tire molding metal molds with electrical discharge machining is disclosed, which makes possible the rotation, longitudinal and cross feeding of a work table on which a...
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4403129 |
Fluid actuated electrode clamp
An element, such as an electrode, to be clamped by a clamping device passes slidingly through the interior of a rigid tube, a portion of which is disposed in a fluid chamber defined within a body...
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4401875 |
Saw blade for high speed electric arc saw
An electric arc saw and a method for operating the saw for cutting metallic objects by melting a narrow kerf into the object are disclosed. The method provides for determining the minimum cutting...
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4398350 |
Centering controller for a tool electrode on an electrical machine tool
A positioning device for a tool electrode on an electrical machine tool, comprising: a tool head and a swivel electrode support for securely holding the tool electrode and adapted to be swivelably...
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4395613 |
Universal electrode holder
A universal electrode holder having a holder body including a top face, a bottom face, perpendicular sidewalls and end walls, wherein one side wall is stepped to define offset lower and upper...
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4387014 |
Electrochemical metal processing apparatus
An electrochemical apparatus with a table formed by three slabs on which the workpiece rests. The table is mounted for rotation about a vertical axis and rests on a fixed support. A plurality of...
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4374313 |
Arrangement for working internal rotational surfaces of metal parts in a cylindrical opening having a high slenderness ratio
Arrangement for working internal rotational surfaces of metal parts in a cylindrical cavity in a blind bore or in a throughgoing opening having a high slenderness ratio. For working, the...
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4366358 |
EDM Method and apparatus utilizing successively displaced magnetic field
Electrical discharge machining with a tool electrode juxtaposed with a workpiece electrode to form a machining gap therebetween in the presence of a machining liquid and wherein a succession of...
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4349716 |
Mechanical control head for guiding the movement of a tool, particularly of an electrode adapted to make a cavity in a metal piece, by electroerosion
The present invention relates to a mechanical control head for guiding the movement of a tool and particularly an electrode for electroerosion by means of a control rod with a forked end. The...
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4341939 |
Wire electrode for cutting an electrode workpiece by electrical discharges
A metallic wire, for cutting a workpiece by electrical discharge machining, coated with at least one layer of a metal having a low temperature of vaporization and a film of a metal oxide on the...
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4316071 |
EDM Apparatus with tool changer
An EDM apparatus for machining by electrical discharges an electrode workpiece by one of a plurality of electrode tools individually and selectively mounted by an automatic tool changer on the...
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