Patents by Inventor Fabrice Jaques
Fabrice Jaques 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).
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Patent number: 11607740Abstract: A method for the monitoring of a wire electrical discharge machining (WEDM) process, the method comprising the steps of: setting a unit observation length for the signal acquisition, continuously acquiring at least one process signal which is representative of an amount of material removed by at least one discharge and the position (X;Y) of said at least one discharge, and determining, based on said at least one process signal and one or more properties of a current machining, a cumulated amount of material removed per unit observation length along a machining path, including amounts of material removed by travelling in a forward cutting direction and amounts of material removed by travelling in a reverse cutting direction.Type: GrantFiled: March 5, 2020Date of Patent: March 21, 2023Assignee: Agie Charmilles SAInventors: Sandrine Metral-Boffod, Alain Reverchon, Fabrice Jaques
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Patent number: 10876951Abstract: A method for the determination of lifetime of a filter of an electric discharge machine the electrical discharge machine in consideration of a maximum allowable filter pressure, wherein the time measuring unit counts the machining time ts during which an electric discharge machining process is running, a filter pressure sensor measures the filter pressure p(k), preferably with a predetermined sampling interval, the pressure measurement p(k) and the respective sampling time t(k) are stored, and the sampled measurements p(k) and the respective sampling times t(k) are used to determine the parameters of an exponential function which best fits to the plurality of sampled measurements regression analysis. The determined parameters include the filter lifetime tf, which serves to determine the residual time to the filter replacement tr and/or the calendar deadline of filter expiration.Type: GrantFiled: March 14, 2018Date of Patent: December 29, 2020Inventors: Fabrice Jaques, Roberto Perez, Bertrand Lavazais, Thomas Serra Tosio
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Publication number: 20200298328Abstract: A method for the monitoring of a wire electrical discharge machining (WEDM) process, the method comprising the steps of: setting a unit observation length for the signal acquisition, continuously acquiring at least one process signal which is representative of an amount of material removed by at least one discharge and the position (X;Y) of said at least one discharge, and determining, based on said at least one process signal and one or more properties of a current machining, a cumulated amount of material removed per unit observation length along a machining path, including amounts of material removed by travelling in a forward cutting direction and amounts of material removed by travelling in a reverse cutting direction.Type: ApplicationFiled: March 5, 2020Publication date: September 24, 2020Inventors: Sandrine METRAL-BOFFOD, Alain REVERCHON, Fabrice JAQUES
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Publication number: 20180266935Abstract: A method for the determination of lifetime of a filter of an electric discharge machine the electrical discharge machine in consideration of a maximum allowable filter pressure, wherein the time measuring unit counts the machining time ts during which an electric discharge machining process is running, a filter pressure sensor measures the filter pressure p(k), preferably with a predetermined sampling interval, the pressure measurement p(k) and the respective sampling time t(k) are stored, and the sampled measurements p(k) and the respective sampling times t(k) are used to determine the parameters of an exponential function which best fits to the plurality of sampled measurements regression analysis. The determined parameters include the filter lifetime tf, which serves to determine the residual time to the filter replacement tr and/or the calendar deadline of filter expiration.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Inventors: Fabrice JAQUES, Roberto PEREZ, Bertrand LAVAZAIS, Thomas Serra TOSIO
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Patent number: 8519296Abstract: A method and machine to allow for the spark-erosion machining of parts, in particular their finishing, using cylindrical or tubular tools by successive layers.Type: GrantFiled: September 8, 2010Date of Patent: August 27, 2013Assignees: AGIE Charmilles SA, Charmilles Technologies S.A.Inventors: Claudio Tricarico, Claude Rollet, Fabrice Jaques, Jean-Claude Diot
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Patent number: 8093527Abstract: The invention relates to a device and a method for electrical discharge machining of a work piece by means of a working electrode. A sequence of working pulses is applied on the work gap between the working electrode and the work piece. The working pulses comprise eroding pulses for eroding material off the work piece and measuring pulses during which an ignition voltage is applied on the work gap in order to initiate a discharge within the work gap and to measure the corresponding, ignition delay time. The ignition voltage and/or the gap width are adjusted such that the ignition delay time is smaller than an oscillation time of the working electrode oscillating within the work gap due to the electrostatic attraction force and the mechanical restoring force.Type: GrantFiled: August 8, 2007Date of Patent: January 10, 2012Assignee: Charmilles Technologies SAInventors: Nicola Giandomenico, Franck Besson, Thierry Poncet, Fabrice Jaques, Friedhelm Altpeter
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Publication number: 20110062118Abstract: Spark-erosion machining method and machine implementing a machining gap, a process regulator, a numerical control system, a Nominal Trajectory. The latter describes the movement of the tool electrode relative to the part as it ought to proceed if no disturbance were to occur during the machining. Information contained in the Nominal Trajectory is used to define at least two control vectors Vg, Vp which orient, within the coordinate system XYZ, two independent regulation movements. The first, or Gap Vector Vg, defines the direction in which a first regulation movement of the axes of the machine must be performed to maintain the removal of material. The second, or Position Vector Vp, defines the direction in which a second regulation movement of the axes of the machining machine must be performed to correct a tool electrode position error. The respective amplitudes of the regulation movements are calculated in real time by the process regulator.Type: ApplicationFiled: September 8, 2010Publication date: March 17, 2011Applicants: AGIE CHARMILLES SA, CHARMILLES TECHNOLOGIES S.A.Inventors: Claudio Tricarico, Claude Rollet, Fabrice Jaques, Jean-Claude Diot
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Patent number: 7608795Abstract: 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 (U2) that can be disconnected by way of two switches (SW1, SW2). Capacitive elements (C1, C5) are mounted in series in the lines (10, 11) connecting the first source to the poles of the machining gap (G). In addition, these poles can be connected by a self-induction coil (Lm) mounted in series with an adjustable DC source (Sm). Thanks to these features, the energy of the eroding discharges can be significantly reduced in order to obtain a superfine surface finishing process of high quality, while at the same time precisely controlling the mean voltage across the terminals of the machining gap.Type: GrantFiled: April 30, 2004Date of Patent: October 27, 2009Assignee: Charmilles Technologies S.A.Inventors: Fabrice Jaques, Sebastian Dorthe, Maurizio Tognolini, Guy Demule, Ernesto Bühler
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Publication number: 20080047937Abstract: The invention relates to a device and a method for electrical discharge machining of a work piece by means of a working electrode. A sequence of working pulses is applied on the work gap between the working electrode and the work piece. The working pulses comprise eroding pulses for eroding material off the work piece and measuring pulses during which an ignition voltage is applied on the work gap in order to initiate a discharge within the work gap and to measure the corresponding ignition delay time. The ignition voltage and/or the gap width are adjusted such that the ignition delay time is smaller than an oscillation time of the working electrode oscillating within the work gap due to the electrostatic attraction force and the mechanical restoring force.Type: ApplicationFiled: August 8, 2007Publication date: February 28, 2008Applicant: Charmilles Technologies SAInventors: Nicola Giandomenico, Franck Besson, Thierry Poncet, Fabrice Jaques, Friedhelm Altpeter
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Publication number: 20070163999Abstract: 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 (U2) that can be disconnected by way of two switches (SW1, SW2). Capacitive elements (C1, C5) are mounted in series in the lines (10, 11) connecting the first source to the poles of the machining gap (G). In addition, these poles can be connected by a self-induction coil (Lm) mounted in series with an adjustable DC source (Sm). Thanks to these features, the energy of the eroding discharges can be significantly reduced in order to obtain a superfine surface finishing process of high quality, while at the same time precisely controlling the mean voltage across the terminals of the machining gap.Type: ApplicationFiled: April 30, 2004Publication date: July 19, 2007Inventors: Fabrice Jaques, Sebastian Dorthe, Maurizio Tognolini, Guy Demule, Ernesto Buhler