Assignee: Charmilles Technologies S.A.

Location: Meyrin, CH
No. of patents: 29

Number	Title	Issue Date
7608795	Device for machining by electroerosion The electrical discharge machining device comprises a first voltage/current source (U1) for discharge initiation connected to the tool electrode (F) and a workpiece electrode (P) forming the poles of a machining gap (G) and a second voltage/current source (U	10/27/2009
7310560	Numerically controlled drive device with device for detecting operating anomalies intended for detecting accidental collisions and method of detecting operating anomalies for this device A drive device for a load (18a) comprises a device for detecting accidental collisions with a motor (14a), a first, respectively a second position sensor (15a, 16a) disposed upstream, respectively downstream of...	12/18/2007
7294806	Method and device for measuring and adjusting the electrode for taper machining on an electrical discharge machine A device and method for measuring and adjusting an electrode used during electrical discharge taper machining, referenced on three axes, Y and Y horizontal and Z vertical, whereas two linear geometric references, bottom and top, which may be intersected by a wire, e...	11/13/2007
6642470	Process and device for machining a three-dimensional piece by electroerosive milling An electroerosion machining device to machine a piece (14) by milling successive layers includes a member (30) to drive in rotation an electrode-tool (31) of tubular shape and a digital control unit (CN) to control the three-dimensional movement (x, y, z)...	11/04/2003
6538226	Load of particles for machining liquids for electro-erosion machines, its process of production, its use and machining liquid containing such a load The machining liquid includes a load of particles contained in a dielectric liquid. The particles are carbon microfibers, sectioned or not, having a diameter (e) comprised between 0.2 and 8 micrometers and a length which is a function of the machining gap...	03/25/2003
6495788	Electrode for machining a piece by electro-erosion and its process for production A wire electrode for machining a piece by electro-erosion includes a metallic core and a cladding having an alloy of manganese and zinc obtained by simultaneous electrolytic deposition at a thickness between 1 and 40 micrometers. The cladding permits a su...	12/17/2002
6465754	Process and device for machining by electroerosion The process and device for machining by electroerosion are arranged so as to produce during each erosive discharge the following succession of phases: a delay phase (tD) during which an alternating voltage is applied between the tool and the pi...	10/15/2002
6392183	Process and device for machining by electroerosion In the process of machining by electroerosion, there is adjusted during a first transitory phase the machining current increase of the discharges after triggering a discharge between the electrode and the piece, such that a parameter connected to this inc...	05/21/2002
6184486	Rotative tool-electrodes of simple shapes for 3D electroerosive machining Electrode tools for electroerosion (EDM) where a cavity or a relief is machined by hollowing out the part at great speed and in successive layers or slices by means of a rotating electrode tool of a simple shape which is independent of the cavity to be er...	02/06/2001
6159543	Processes for manufacturing wires with a brass surface A process for the manufacture of wires with a brass surface and a predefined zinc content for application in wire electroerosion. Wire (32) made of copper or brass is passed through heated treatment chamber (14) filled with a zinc vapor, wherein the zinc ...	12/12/2000
6072143	Measuring device and method for determining the length of an electrode The invention proposes a method for determining the actual length of an electrode in an electrical discharge forming machine, wherein the electrode is brought in contact with a contact element. An electric short circuit is triggered at a trigger point dur...	06/06/2000
6011230	Apparatus for holding an electrode for electrical erosion machines An apparatus for holding an electrode, in particular a cylindrical, tubular electrode in an electrical erosion machine, the electrode being held in a prismatic guide, wherein the electrode can be pressed by an elastic laminate against a prismatic guide....	01/04/2000
5561336	Device for supplying electric current to a rotating part and its application in EDM A good electric contact device is provided for carrying electrical current to a rotating cylindrical part; it comprises at least one conducting plate mounted around the rotating cylinder to be supplied with current, rotating together with it, while establishin...	10/01/1996
5455400	Machining tank with a mobile part giving a free access to the machine area of machine tools A work tank for machine tools for receiving the machining fluid comprising a fixed part and a movable part which retracts to move the tank away from the work area when it is necessary to remove a workpiece....	10/03/1995
5420388	Tool-holder and rapid rotary spindle Tool-holder (5) makes it possible to rotate a tool at high speed around its axis of symmetry. Its tapered end (26) is engaged in the tapered bore (16) provided in the spindle (6). In a bore of suitable shape a clamp (2) is engaged, adapted to secure the e...	05/30/1995
5410117	Device and control process for EDM machining with an electrode-wire At least one machining parameter of an electrode-wire EDM machine, cutting according to a predetermined trajectory, is varied when the electrode-wire reaches the apex of an angle or approaches an arc. The strategy consists of the following stages: 1) calc...	04/25/1995
5396040	Device, standard blanks and standardized electrodes for electro-discharge milling An electric discharge machine with a turning or touch-up of the electrode uses an auxiliary tool for cutting or chiseling within an auxiliary tool holder which is mounted in the tank and includes a reference sphere for determining the electrode's shape. T...	03/07/1995
5196665	Multi-layer electrode wire and method for producing the same A wire electrode for electro-erosion cutting consisting of a core of electrically conductive material. The core is covered with a film of multiple fine layers. The layers provide the characteristics of high electrical conductivity and low melting and vapo...	03/23/1993
5128505	Injection device and electrode wire electric discharge machine for high-speed precision machining The injection device for machining liquid comprises a nozzle (9) sliding in a mobile element (7) which itself slides inside a housing (1) fixed to a machining head, these three elements forming an injection chamber (2) with the base of this head. The nozz...	07/07/1992
5122630	Device and control process for an EDM cutting machine preventing wire breakage Device and process to control at least one machining parameter of an electrode-wire EDM machine according to a protection strategy, in particular to avoid short-circuits, or to improve machining conditions so as to obviate the risk of electrode-wire break...	06/16/1992
5071567	Installation and process for filtration of a machining liquid in a continuous supply circuit An apparatus and method for continuously supplying and recycling machining liquid in an EDM device employ a filter between a liquid reservoir and a machining location at which the liquid is used. In one embodiment of the invention a buffer reservoir is pr...	12/10/1991
5047607	Wire-cutting electric discharge machine with wire sectioning device for wire disposal An EDM machine in combination with a wire sectioning device. The wire sectioning device has two rotating members consisting of a rotating member 2 having an anvil 16 and a member 3 rotating in the opposite direction. The rotating member 3 has four cutting...	09/10/1991
5023421	Device for limiting the withdrawal of the electrode of a die sinking machine A device comprising an element mounted on the frame 1 and having a microswitch 8 that can be actuated by a mechanical part 9 and which causes the machining current to be cut off when this part 9 arrives opposite it when the machining head 5 moves up. The ...	06/11/1991
4980531	Prehesive device for the electrode wire of an EDM cutting machine An EDM machine with a travelling wire electrode having a device for straightening and rethreading the wire electrode. The device has a pivotally rotating arm that has a clamp to grasp the free end of the wire after accidental breakage. The clamp applies a...	12/25/1990
4891485	Device for fastening an EDM tool in plural orientations A device permits fastening a tool (preferably an EDM tool) to a machining head in at least two different orientations. The tool is mounted on a tool holder, and a pair of portions alternately fix the holder to the head in two different orientations, for e...	01/02/1990
4888462	Device and process for machining by electroerosion A device for machining by electroerosion has a tool electrode driven in a rotary motion controlled by a servomotor and showing the shape of a solid of revolution around its axis of rotation. A measuring circuit continuously evaluates the degree of contami...	12/19/1989
4883934	Machine using a wire for use in electroerosion A machine which uses electroerosion with an electrode piece by means of a stretched electrode wire unwound between two wire guides with at least one device with crossed movements to fabricate other pieces, these wire guides are equipped to displace in a p...	11/28/1989
4825030	Device and process for preventing the breaking of a metal wire Device placed at the outlet of a machining zone and having an outflow gauge equipped with two barrels in which a metal wire passes, an electrical current running through the wire which travels under tension between two guides, a pumping installation injec...	04/25/1989
4814574	Device for injection of liquid for machining by electroerosion The device has a case (1) which has a wire guide (2) and a chamber (4) filled with machining liquid which is brought there under pressure by a pipe (7). A nozzle (5) in the shape of a truncated cone fits in the case and closes the chamber (4) in its norma...	03/21/1989

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Assignee: Charmilles Technologies S.A.