Patents by Inventor Peter Wehrli
Peter Wehrli 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: 20230253890Abstract: A DC/DC converter circuit for phase-modulated communication comprises a push-pull driver to which a reference clock having a fixed predefined frequency can be applied on the input side; a transformer having a primary and secondary coil, wherein the push-pull driver is connected to the primary coil on the output side; a synchronous rectifier connected to the secondary coil on the AC-side; a resonant circuit having a capacitance and an inductance, wherein the resonant circuit is designed such that a part of the resonant circuit is on a primary side of the transformer and another part of the resonant circuit is on a secondary side of the transformer; a decoupling inductor connected on a secondary side of the transformer and downstream of the synchronous rectifier, which is not part of the resonant circuit; and an output capacitor connected in series with the decoupling inductor via which an output voltage is provided.Type: ApplicationFiled: June 21, 2021Publication date: August 10, 2023Inventors: Max Bauer, Peter Wehrli, Lukas Gätzi
-
Patent number: 7230200Abstract: A wire cutting device for an electrical discharge machining (EDM) machine with a wire draw-off device, which moves a wire electrode along a feed direction into a cutting zone of the EDM machine; and with a deflection unit in order to deflect the wire electrode running in the feed direction into the cutting zone from the feed direction into a cutting area, in which at least one cutting edge acts on the wire electrode in the cutting area in order to cut it.Type: GrantFiled: August 8, 2005Date of Patent: June 12, 2007Assignee: Agie SA.Inventor: Peter Wehrli
-
Publication number: 20060049146Abstract: A wire cutting device for an electrical discharge machining (EDM) machine with a wire draw-off device, which moves a wire electrode along a feed direction into a cutting zone of the EDM machine; and with a deflection unit in order to deflect the wire electrode running in the feed direction into the cutting zone from the feed direction into a cutting area, in which at least one cutting edge acts on the wire electrode in the cutting area in order to cut it.Type: ApplicationFiled: August 8, 2005Publication date: March 9, 2006Applicant: AGIE SAInventor: Peter Wehrli
-
Patent number: 6920370Abstract: A method and device for disturbance sensing in the drive system of a numerically controlled machine tool or similar device is disclosed, in which at least one drive motor for positioning of a machine part being moved such as an advance slide or an X/Y cross-slide is coupled via one or more transmission elements in which the position of the moving machine part is measured directly on the machine part and also indirectly in at least one location in the transmission chain. Direct and indirect position measured values are compared and the measured value comparison value is used to record a disturbance with consideration of the actual operating conditions, such as machining speed and acceleration/delay, optionally moved masses and machine-specific process forces upon fulfillment of a specific criterion.Type: GrantFiled: December 15, 2000Date of Patent: July 19, 2005Assignee: Agie SAInventors: Peter Wehrli, Orio Sargenti
-
Patent number: 6674040Abstract: A machine tool with a machine frame is disclosed. A first tool guide is provided on the frame to guide a tool to a first guide position. The first tool guide is a movable gantry carrier with a movable first sliding carriage. The tool guide can be moved with respect to the machine frame in a first plane along a first direction and in a second direction which is orthogonal with respect to the first direction. Furthermore, a second tool guide is provided on the machine frame to guide the tool to a second guide position. The second tool guide can be moved with respect to the machine frame in a second plane along a third direction and a fourth direction which is orthogonal to the third direction, independently of the first tool guide. Finally, a tool holder is provided on the machine frame to hold the machined part. The machined part is led between the first and the second guide positions of the tool. The second tool guide is a movable gantry carrier with a movable second sliding carriage.Type: GrantFiled: December 13, 2001Date of Patent: January 6, 2004Assignee: AGIE SAInventor: Peter Wehrli
-
Patent number: 6646220Abstract: Devices and methods for threading a wire electrode in a wire erosion machine are disclosed. A feed-through channel is provided for producing a fluid jet within which the machining electrode is guided. One or more control devices are provided for varying the cross section of the feed-through channel and, thus, the cross section of the fluid jet.Type: GrantFiled: December 4, 2001Date of Patent: November 11, 2003Assignee: Agie SAInventors: Karl Tobler, Peter Wehrli
-
Patent number: 6541728Abstract: A wire tensioning system for a wire-shaped working electrode of a spark erosion machine and a procedure for the tensioning of the working electrode. The working electrode at least nearly circumferentially encompasses a braking roller in a wire entry zone and/or a tensioning roller in a wire withdrawal zone. A nozzle is assigned to the braking and/or the tensioning roller such that the nozzle exerts a tensile force on the working electrode to tension the wire.Type: GrantFiled: February 28, 2001Date of Patent: April 1, 2003Assignee: Agie SAInventors: Giorgio Baiardi, Peter Wehrli
-
Publication number: 20030057187Abstract: A wire tensioning system for a wire-shaped working electrode of a spark erosion machine and a procedure for the tensioning of the working electrode. The working electrode at least nearly circumferentially encompasses a braking roller in a wire entry zone and/or a tensioning roller in a wire withdrawal zone. A nozzle is assigned to the braking and/or the tensioning roller such that the nozzle exerts a tensile force on the working electrode to tension the wire.Type: ApplicationFiled: February 28, 2001Publication date: March 27, 2003Inventors: Giorgio Baiardi, Peter Wehrli
-
Patent number: 6495789Abstract: A device for preparation of a machining electrode, especially a machining electrode or bar sinking electrode in an EDM machine for feed into an electrode guide system. The device employs a suction and advance device for suction and advance of the machining electrode and at least one pressure equalization device. Additionally, an electrode change device is disclosed having at least two devices for preparing the machining electrode and a method for preparation of a machining electrode.Type: GrantFiled: December 22, 2000Date of Patent: December 17, 2002Assignee: Agie SAInventors: Giorgio Baiardi, Peter Wehrli
-
Patent number: 6486429Abstract: An EDM machine for machining a workpiece is disclosed. The EDM machine includes a machine frame having a central stationary machine body and a machining electrode to machine the workpiece. Machining occurs by producing a relative movement in at least one of an X axial direction and a Y axial direction between the machining electrode and the workpiece. The machine also includes a first axial slide for moving at least one of the workpiece and the machining electrode in the X axial direction, and a second axial slide for moving at least one of the machining electrode and the workpiece in the Y axial direction. The first axial slide is mounted in a substantially vertical plane on the machine body for lateral movement in a substantially horizontal direction.Type: GrantFiled: July 12, 2000Date of Patent: November 26, 2002Assignees: Agie SA, Charmilles Technologies SAInventors: Peter Wehrli, René Brun
-
Publication number: 20020079292Abstract: A machine tool with a machine frame is disclosed. A first tool guide is provided on the frame to guide a tool to a first guide position. The first tool guide is a movable gantry carrier with a movable first sliding carriage. The tool guide can be moved with respect to the machine frame in a first plane along a first direction and in a second direction which is orthogonal with respect to the first direction. Furthermore, a second tool guide is provided on the machine frame to guide the tool to a second guide position. The second tool guide can be moved with respect to the machine frame in a second plane along a third direction and a fourth direction which is orthogonal to the third direction, independently of the first tool guide. Finally, a tool holder is provided on the machine frame to hold the machined part. The machined part is led between the first and the second guide positions of the tool. The second tool guide is a movable gantry carrier with a movable second sliding carriage.Type: ApplicationFiled: December 13, 2001Publication date: June 27, 2002Inventor: Peter Wehrli
-
Publication number: 20020079293Abstract: Devices and methods for threading a wire electrode in a wire erosion machine are disclosed. A feed-through channel is provided for producing a fluid jet within which the machining electrode is guided. One or more control devices are provided for varying the cross section of the feed-through channel and, thus, the cross section of the fluid jet.Type: ApplicationFiled: December 4, 2001Publication date: June 27, 2002Inventors: Karl Tobler, Peter Wehrli
-
Publication number: 20020047538Abstract: A device for preparation of a machining electrode, especially a machining electrode or bar sinking electrode in an EDM machine for feed into an electrode guide system. The device employs a suction and advance device for suction and advance of the machining electrode and at least one pressure equalization device. Additionally, an electrode change device is disclosed having at least two devices for preparing the machining electrode and a method for preparation of a machining electrode.Type: ApplicationFiled: December 22, 2000Publication date: April 25, 2002Inventors: Giorgio Baiardi, Peter Wehrli
-
Publication number: 20010012973Abstract: A method and device for disturbance sensing in the drive system of a numerically controlled machine tool or similar device is disclosed, in which at least one drive motor for positioning of a machine part being moved such as an advance slide or an X/Y cross-slide is coupled via one or more transmission elements in which the position of the moving machine part is measured directly on the machine part and also indirectly in at least one location in the transmission chain. Direct and indirect position measured values are compared and the measured value comparison value is used to record a disturbance with consideration of the actual operating conditions, such as machining speed and acceleration/delay, optionally moved masses and machine-specific process forces upon fulfillment of a specific criterion.Type: ApplicationFiled: December 15, 2000Publication date: August 9, 2001Inventors: Peter Wehrli, Orio Sargenti
-
Patent number: 6078019Abstract: A wire transport system for an electrical discharge machining apparatus with at least one wire electrode includes a wire supply, a wire tensioner and/or a wire disposer arranged such that the entire wire transport is automated. The wire is automatically transported from the wire supply to a processing zone, in particular, by a fluid. Due to the elimination of fluctuations in the uniform movement of the wire, a wire transport with less vibration is attained, and the processing quality is improved. In addition, a higher reliability is achieved.Type: GrantFiled: February 28, 1997Date of Patent: June 20, 2000Assignee: Agie Industrial Electronics Ltd.Inventors: Brenno Medici, Peter Wehrli
-
Patent number: 5854459Abstract: The invention pertains to a method and a device for die sinking and wire-cutting workpieces by means of electrical discharge machining. A machine frame (10) as well as a worktank (9) and a lower guide head (5) form a stationary unit referred to the main axis directions X, Y. The workpiece (2) is immersed in the worktank (9) and moved in the horizontal plane by means of the X/Y main axis drive (14). An upper guide head (4) also forms part of the stationary unit or can be moved by means of a Z drive (16) and/or a U/V drive (15). The lower guide head may also be designed such that it can be vertically moved by means of a lower Z drive (17). This concept is particularly suitable for producing microscopic components by means of electrical discharge machining and as a multielectrode machine that processes workpieces simultaneously or sequentially.Type: GrantFiled: October 2, 1997Date of Patent: December 29, 1998Assignee: Agie Ltd.Inventors: Ernst Buhler, Hans-Jurg Etter, Peter Wehrli
-
Electroerosion machine featuring photoelectric sensing means for measuring wire electrode deflection
Patent number: 5057662Abstract: The invention presents a spark erosion machine, having a travelling wire electrode and an optical measuring means to measure the deflection of the travelling wire electrode. The measuring means includes a light source (10) producing a homogeneous parallel bundle of rays. A sensor assembly (1,11) measuring the light beam which comes from the light source and is shaded by the travelling wire electrode (9) is designed such as to absorb a light quantity which is dependent in one-to-one correspondence on the relative position of the travelling wire electrode (9). An evaluation circuit connected downstream of the sensor assembly provides an electrical signal indicating the deflection of the travelling wire electrode from its straight position. By means of this electrical signal, the relative positions of the guide heads of the travelling wire electrode and that of the workpiece can be corrected in such a way that machining errors caused by the deflection of the travelling wire electrode can be avoided.Type: GrantFiled: May 26, 1989Date of Patent: October 15, 1991Inventors: Ivano Beltrami, Peter Wehrli, Axel Bertholds -
Patent number: 5041708Abstract: A power supply apparatus for an electroerosion machine serves to carry an erosion current to a passing-through erosion wire by means of at least one contact part, said erosion wire being pressed against the contact part by means of a contact pressure device. In order to increase the erosion currents which can be carried, the contact pressure device is formed by a magnetic field generating means which applies a magnetic field to the erosion wire.Type: GrantFiled: May 10, 1990Date of Patent: August 20, 1991Inventor: Peter Wehrli
-
Patent number: 4900889Abstract: A current supply device for movable electrodes of spark erosion machines comprises a plurality of individual contacts and includes in leads connecting the contacts with a current generator, electrical components in the form of pulse transformers for a pairwise negative feedback of partial currents or additional impedances stepped according to a mathematical series for uniform current distribution over the individual contacts. The current supply device is particularly suitable for the current transmission of high energy short pulses, such as are used for an erosive wire cutting. The current supply device operates in an almost wear-free manner and can also fulfill the function of guide for the electrode.Type: GrantFiled: February 15, 1989Date of Patent: February 13, 1990Assignee: Ag fur Elektronik Industrielle, AGIEInventors: Ernst Buhler, Peter Wehrli, Massimo Martignoni, Mauro Erba