With Monitoring Patents (Class 219/121.83)
  • Patent number: 11027364
    Abstract: A method for measuring the depth of the vapour cavity during an industrial machining process employs a high-energy beam. An optical measuring beam is directed towards the base of a vapour cavity. An optical coherence tomograph generates interference factors or other raw measurement data from reflections of the measurement beam. An evaluation device generates undisturbed measurement data, wherein raw measurement data that is generated at different times is processed together in the course of a mathematical operation. This operation can be a subtraction or a division. Slowly changing interference factors can thus be eliminated. An end value for the distance to the base of the vapour cavity is calculated from the undisturbed measurement data using a filter. As a result, the depth of the vapour cavity can be determined, in the knowledge of the distance at a part of the surface of the work piece that is not exposed to the high-energy beam.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: June 8, 2021
    Assignee: PRECITEC OPTRONIK GMBH
    Inventors: Martin Schönleber, Christoph Dietz
  • Patent number: 11022747
    Abstract: The invention concerns an apparatus and its use for laser processing. The invention also concerns a method and an optical component. According to the invention, at a first laser device, providing a first optical feed fiber and a second laser device providing a second optical feed fiber is provided. A beam combining means connected to the first and second feed fibers and to a multi-core optical fiber is adapted to form a composite laser beam by having the first optical feed fiber aligned with a first core of the multi-core optical fiber and the second optical feed fiber aligned with at least one second core of the multi-core optical fiber. The first and second cores outputs a composite laser beam to a workpiece to be processed.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 1, 2021
    Assignee: Corelase Oy
    Inventor: Jarno Kangastupa
  • Patent number: 10981333
    Abstract: In an example, a method includes forming a layer of build material and selectively applying fusing agent on to the layer based on a predetermined pattern. Energy may be applied to the layer of build material, and at least one temperature of the layer may be measured. A temperature distribution over the layer of build material may be determined, the temperature distribution indicating, for each of a plurality of locations on the layer of build material, whether fusing agent is present at that location. At least one characteristic derived from the temperature distribution may be compared to a predetermined characteristic. When the compared characteristics differ, an operational characteristic of an additive manufacturing apparatus may be adjusted.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: April 20, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lluis Hierro Domenech, Esteve Comas, Sergi Culubret
  • Patent number: 10974497
    Abstract: Various additive manufacturing systems and methods are described. In one example, a base is configured to receive deposition material from an additive manufacturing apparatus. The base includes a plurality of regions configured to be individually temperature controlled to affect heat transfer characteristics of at least a portion of the received deposition material. A temperature control system is coupled with the regions and configured to adjust an associated temperature of each of the regions.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: April 13, 2021
    Assignee: The Boeing Company
    Inventor: Om Prakash
  • Patent number: 10946484
    Abstract: A laser machining method includes, before laser machining: calculating the amount of focus movement on the basis of a first measurement value measured with the external optical system warmed up and being the amount of energy of a laser beam passing through a small-diameter hole and a first reference value (database D1) predetermined depending on the type of contamination of the external optical system in relation to the first measurement value; and compensating the focus position in laser machining on the basis of the calculated amount of focus movement.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: March 16, 2021
    Assignee: Fanuc Corporation
    Inventor: Takashi Izumi
  • Patent number: 10948422
    Abstract: A device for emitting electromagnetic radiation, in particular UV radiation, including at least one radiating unit that only emits radiation at visible wavelengths. The device further includes a unit for detecting a functional error of the radiating unit. In practice, the radiating unit is provided for emitting only UV radiation and/or IR radiation and is formed by a light diode. The detection unit is designed to continuously monitor the radiating unit for functional errors, and the device includes an open-loop and/or closed-loop control unit which is provided to automatically switch off the radiating unit and/or display the functional error, upon detection of the functional error by the detection unit.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 16, 2021
    Inventor: Marc Breit
  • Patent number: 10918450
    Abstract: In certain embodiments, a system for controlling a laser device comprises a laser device, a haptic sensation generator, a gesture detector, and a computer. The laser device generates a laser beam with a focal point to perform a procedure on a patient. The haptic sensation generator generates an acoustic field that projects a sensory pattern onto a user, where the sensory pattern operates as a user controller related to the procedure. The gesture detector detects a gesture of the user interacting with the user controller, and provides a description of the gesture. The computer: instructs the haptic sensation generator to generate the acoustic field that projects the sensory pattern operating as the user controller; receives the description of the gesture of the user interacting with the user controller; and provides instructions to perform an operation corresponding to the gesture.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: February 16, 2021
    Inventor: Peter Martin
  • Patent number: 10876894
    Abstract: A transmission Raman spectroscopy apparatus has a light source for generating a light profile on a sample, a photodetector having at least one photodetector element, collection optics arranged to collect Raman scattered light transmitted through the sample and direct the Raman light onto the at least one photodetector element and a support for supporting the sample. The support and light source are arranged such that the light profile can be moved relative to the sample in order that the at least one photodetector element receives Raman scattered light generated for different locations of the light profile on the sample.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 29, 2020
    Assignee: RENISHAW PLC
    Inventors: Timothy Smith, Richard John Blackwell-Whitehead
  • Patent number: 10861751
    Abstract: A method includes providing a substrate including a first fin element and a second fin element extending from the substrate, and forming a first layer including a first material over the first and second fin elements, wherein the first layer includes a gap disposed between the first and second fin elements. An anneal process is performed to remove the gap in the first layer, wherein performing the anneal process includes adjusting an energy applied to the first layer during the anneal process. The gap is filled by a portion of the first material around the gap reaching a sub-melt temperature that is different from a melting point of the first material.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: December 8, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: De-Wei Yu, Chia Ping Lo, Liang-Gi Yao, Weng Chang, Yee-Chia Yeo, Ziwei Fang
  • Patent number: 10821550
    Abstract: A welding apparatus includes: a laser beam irradiation section that emits a laser beam; a spectroscopic apparatus that receives plasma emission from a molten pool formed by laser beam irradiation, and acquires optical spectral information; and an estimation section that estimates material components of a weld zone on the basis of the optical spectral information, and estimates a property of the weld zone on the basis of the material components.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: November 3, 2020
    Assignee: HITACHI, LTD.
    Inventor: Masanori Miyagi
  • Patent number: 10780639
    Abstract: Irradiation device (6) for an apparatus (1) for additively manufacturing three-dimensional objects (2) by successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), the irradiation device (6) being adapted for a successive layerwise selective irradiation and consolidation of layers of a build material (3) by means of at least one energy beam (4), the irradiation device (6) comprising: —a plurality of beam generating units (7a-7c) each being adapted to generate at least one energy beam (4a-4c) of given beam properties, each beam generating unit (7a-7c) being couplable or coupled a with at least one beam guiding element (8a-8c), —a plurality of beam guiding elements (8a-8c), in particular beam guiding fibers, each beam guiding element being (8a-8c) couplable or coupled with at least one beam generating unit.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 22, 2020
    Assignee: Concept Laser GmbH
    Inventors: Frank Schödel, Peter Pontiller-Schymura, Boris Eichenberg
  • Patent number: 10780522
    Abstract: A method for automatable or automated determination of the focal position of a laser beam (2) including the following steps: —arranging a substrate (10) in a first exposure position (z1), and exposing the substrate (10) with at least one exposure vector (13) in the first exposure position (z1), —moving the substrate (10) into several other exposure positions, in which the substrate (10) is respectively arranged in another certain z-axis position (zn) relative to the reference point (11), and respectively exposing the substrate (10) with at least one exposure vector (13) in the respective other exposure positions (zn), —optically evaluating the exposure pattern (12) by detecting different contrast sections in the exposure pattern (12) that can be optically detected, —determining the focal position of the laser beam (2) based on the detected optical contrast sections.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: September 22, 2020
    Assignee: Concept Laser GmbH
    Inventors: Florian Bechmann, Markus Stark, Fabian Zeulner
  • Patent number: 10766200
    Abstract: A system to adjust and measure an additive manufacturing device via the CLAD method. The system includes a powder spray nozzle and a laser beam passing through the center of the nozzle, and a light source providing a light beam substantially perpendicular a lighting plane. The light source includes a support to position the light source with respect to a material surface. A profile camera is installed such that its optical axis is substantially parallel to the lighting plane. A projector to project a view seen by the center of the nozzle on an optical path and an optical axis of a centering camera is placed on the optical path. A low-power laser shot perforates a target. An acquisition and processing unit collects the images from the two cameras.
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: September 8, 2020
    Assignee: ECOLE CENTRALE DE NANTES
    Inventors: Jean-Yves Hascoet, Gilles Carabin
  • Patent number: 10722975
    Abstract: A laser processing device for efficiently starting laser processing, while eliminating an adverse effect due to a reflected laser beam from a workpiece. The laser processing device detects an intensity of a reflected beam, which is a part of a laser beam irradiated from a laser oscillator and then is reflected by a workpiece surface, continuously increases an intensity of the irradiating laser beam over a predetermined period of time, selects a content of a next process, based on a temporal change in the intensity of the detected reflected beam, and executes the next process subsequent to the laser processing, based on the selected content of the next process.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: July 28, 2020
    Assignee: FANUC CORPORATION
    Inventor: Tatsuya Mochizuki
  • Patent number: 10712151
    Abstract: The present invention relates to a sensor device for determining alignment/misalignment of a laser beam relative to a gas nozzle of a laser machining head which comprises a sensor housing provided with mounting means adapted to mount the housing to a laser machining head, a camera device comprising a camera, the camera device is provided in the sensor housing, so that the camera faces the tip of the gas nozzle when the sensor housing is mounted to the laser machining head for visualizing an orifice of the gas nozzle and a pilot laser simultaneously, and output means for outputting image signals obtained by the camera.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: July 14, 2020
    Assignee: PRECITEC GMBH & CO. KG
    Inventors: Robert Borgstrom, Brian Smith
  • Patent number: 10705024
    Abstract: Embodiments of the present invention are directed to systems and methods of predicted a welding property for a given welding operation using at least one electrode. Embodiments determine a predicted weld deposit property and compare the predicted property to a desired property to determine whether or not a selected electrode for the given welding operation can achieve the desired weld deposit.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 7, 2020
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Badri Narayanan, John Procario, Michael Kottman
  • Patent number: 10695227
    Abstract: A dressing for treating tissue with negative pressure may be a composite of dressing layers, including a release film, perforated gel layer, a perforated polymer film, a manifold, and an adhesive cover. A method of manufacturing the dressing may comprise providing a first layer, such as the gel layer, on a substrate, perforating the first layer on the substrate to create a plurality of apertures in the first layer, and creating an index of the plurality of apertures in the first layer. A laser can be calibrated based on the index. A second layer, such as the polymer film, may be coupled to the first layer, and a plurality of slots can be cut in the second layer with the laser. Each of the slots can be cut through one of the apertures in the first layer based on the index.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: June 30, 2020
    Assignee: KCI Licensing, Inc.
    Inventors: Christopher Brian Locke, John Elwood
  • Patent number: 10675709
    Abstract: A method and a device for monitoring laser cutting processes in the high-power range above 1 kW mean output envisage automatic quality control after interruption and/or completion of a cutting process carried out with predetermined cutting parameters. The cutting process is interrupted after a first partial processing step, whereupon a partial section (K1 . . . KX) of the processing path is scanned. This preferably takes place at a higher speed than that for the first partial processing procedure and preferably close to or on the same processing path. On the basis of the scan result at least one quality feature of the processing result is automatically determined and compared with predefined quality specifications. Depending on the result of the comparison a fault message can then be issued, the processing interrupted, reworking of a defect point carried out, at least one cutting parameter adjusted and the cutting process continued with the changed set of cutting parameters.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: June 9, 2020
    Assignee: BYSTRONIC LASER AG
    Inventors: Andreas Lüdi, Roland Bader
  • Patent number: 10661385
    Abstract: A laser machining apparatus includes: a laser beam emission device; a visible laser beam emission device; a scanner; and a controller. The controller is configured to perform: generating machining data including coordinate data representing a machining pattern to be machined on a workpiece; machining the workpiece with a laser beam according to the machining data by controlling the laser beam emission device and the scanner; generating, in response to receiving a resuming command after the machining has been halted at a stopping position, a guide pattern based on a stopping point coordinate and the machining data, the guide pattern being used for resuming the machining from the stopping position, the stopping point coordinate indicating the stopping position and being determined by the coordinate data; and projecting the guide pattern onto the workpiece with a visible laser beam by controlling the visible laser beam emission device and the scanner.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 26, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Nishikawa, Yoshihisa Kusumoto
  • Patent number: 10646960
    Abstract: The present disclosure relates to a powdered bed fusion additive manufacturing (PBFAM) apparatus. The apparatus uses a container for holding a quantity of powdered material. The container has a bottom wall for supporting the powdered material, wherein the bottom wall is made from the same material as the powdered material. A temperature sensing subsystem is coupled to a portion of the container for detecting a temperature of the container. A laser generates an optical beam directed at the powdered material held by the container for melting the powdered material. A controller receives temperature information from the temperature sensing subsystem and determines an absorptivity of the powdered material based on the temperature information.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: May 12, 2020
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Alexander M. Rubenchik, Manyalibo Joseph Matthews, Johannes Trapp
  • Patent number: 10646945
    Abstract: A soldering apparatus and method involves capturing an image of a soldering operation, and storing image data in association with that particular soldering operation. A soldering tool that is used to perform the soldering operation has a position during the soldering operation, and the image data could also be stored in association with data for that particular position. The position data could be for an operation start point and/or an operation endpoint. Associating the image data in this way could help a manufacturer investigate soldering abnormalities that might be reported after a product is shipped to a customer.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: May 12, 2020
    Assignee: HAKKO CORPORATION
    Inventor: Yoshitomo Teraoka
  • Patent number: 10632730
    Abstract: A process for melting/sintering powder particles for layer-by-layer production of three-dimensional objects is performed by a)applying a layer of a powder material solidifiable under the action of electromagnetic radiation, b) heating the powder material to not more than 10 K below the melting point according to DIN 53765 by a radiation from a heat-radiating element whose maximum radiation intensity is at a wavelength of 5000 nm or at longer wavelengths, c) selective melting/sintering of at least a region of the powder material which corresponds to the cross section of the three-dimensional object, d)repeating steps a) to c) until the three-dimensional object is obtained.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: April 28, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Maik Grebe, Wolfgang Diekmann, Sigrid Hessel-Geldmann, Juergen Kreutz
  • Patent number: 10622244
    Abstract: A method for manufacturing includes coating a substrate (22) with a matrix (28) containing a material to be patterned on the substrate. A pattern is fixed in the matrix by directing a pulsed energy beam to impinge on a locus of the pattern so as to cause adhesion of the material to the substrate along the pattern without fully sintering the material in the pattern. The matrix remaining on the substrate outside the fixed pattern is removed, and after removing the matrix, the material in the pattern is sintered.
    Type: Grant
    Filed: April 5, 2015
    Date of Patent: April 14, 2020
    Assignee: ORBOTECH LTD.
    Inventors: Michael Zenou, Zvi Kotler, Jonathan Ankri, Abraham Rotnemer, Oleg Ermak
  • Patent number: 10598636
    Abstract: A system provides for the calculation of the penetration depth of a weld in an orthotropic steel decking system. Weld scan section data is accessed and each scan section along the weld seam is processed to find the amount of penetration as a percentage of the thickness of the rib leg metal at the weld location. The amount of penetration is calculated by finding ultrasonic reflections recorded as voxels that have the greatest magnitude within an area of contiguous magnitudes and then determining the location of those voxels relative to the weld geometry and distance along the thickness of the rib leg steel. A report for each section scan and the entire weld seam may be generated for review by a weld inspector that allows for spot inspections of specified areas along the weld seam for possible weld remediation.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: March 24, 2020
    Assignee: VeriPhase, Inc.
    Inventors: John Mark Davis, Archibald Leach Cobbs, Charles Allan Hansen, Nicholas James Bublitz, Samuel Matthew Davis
  • Patent number: 10576581
    Abstract: An apparatus for laser materials processing including a laser (4) for generating a laser beam and a laser head (5) which is movable along at least one spatial direction and is connected to the laser via a light guide, and which emits a laser beam (7) capable of processing a material. The present invention also relates to an apparatus for selective laser melting or selective laser sintering having an apparatus for laser materials processing.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 3, 2020
    Assignee: MTU Aero Engines AG
    Inventors: Christian Liebl, Steffen Schlothauer
  • Patent number: 10556295
    Abstract: A laser machining device includes a contamination determining part that determines contamination of an external optical system before laser machining; the contamination determining part includes a lens contamination determining section that determines contamination of a lens in the external optical system on the basis of a comparison between a first measurement value, which is measured by an energy amount measuring part in a state where the external optical system is not heated, and a second measurement value, which is measured by the energy amount measuring part in a state where the external optical system is heated.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: February 11, 2020
    Assignee: FANUC CORPORATION
    Inventor: Takashi Izumi
  • Patent number: 10525689
    Abstract: The invention relates to a method for constructing a three-dimensional object (3) in layers from a pulverulent construction material by solidifying layers of the pulverulent construction material in a successive manner at each layer point which corresponds to a cross-section of the object, wherein the solidification process is carried out by introducing thermal energy. The method has the following step: solidifying all the layer points which correspond to a cross-section of the object. The introduced thermal energy quantity is adjusted at least in a sub-region of the layer dependent on the duration of the previous solidification step for the previous powder layer or dependent on the current solidification step duration, which is calculated in advance.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 7, 2020
    Assignee: EOS GmbH Electro Optical Systems
    Inventors: Stefan Paternoster, Frank Müller, Albert Fruth
  • Patent number: 10509390
    Abstract: Sensor data generated by a sensor of a computer numerically controlled machine can be compared with a forecast. The forecast can include expected sensor data for the sensor, over a course of an execution plan for making a cut with a movable laser cutting head. The sensor data can be generated during execution of the execution plan. During execution of the execution plan, the sensor data can be monitored and a deviation of from the forecast can be detected. It can be determined, based on the detecting, that an anomalous condition of the computer numerically controlled machine has occurred. Based on the determining, an action can be performed.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 17, 2019
    Assignee: Glowforge Inc.
    Inventors: Daniel Shapiro, Mark Gosselin, Anthony Wright, Dean Putney, Timothy Ellis, Lauren Banka
  • Patent number: 10493564
    Abstract: The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: December 3, 2019
    Assignee: Velo3D, Inc.
    Inventors: Benyamin Buller, Erel Milshtein, Thai Cheng Chua
  • Patent number: 10464172
    Abstract: A processing system directs a laser beam to a composite including a substrate, a conductive layer, and a conductive border. The location of a focus of the laser beam can be controlled to bring the laser beam into focus on the surfaces of the conductive materials. The laser beam can be used to ablatively process the conductive border and non-ablatively process the conductive layer by translating a focus-adjust optical system so as to vary laser beam diameter.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: November 5, 2019
    Assignee: nLIGHT, Inc.
    Inventors: Robert J. Martinsen, Adam Dittli, Ken Gross
  • Patent number: 10226836
    Abstract: A controller of a laser machining device according to the present invention includes a positioning completion determining part for determining whether or not positioning of the nozzle is completed, a completion expectation determining part for determining whether or not the completion of the positioning of the nozzle can be expected, and a subsequent process determining part for determining whether or not a subsequent process can be carried out in the state where the completion of the positioning of the nozzle is expected. If the subsequent process can be carried out when the completion of the positioning of the nozzle is only expected, the subsequent process is carried out immediately when it is determined that the completion of the positioning of the nozzle can be expected. If the subsequent process cannot be carried out, the subsequent process is carried out only after the positioning of the nozzle is completed.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: March 12, 2019
    Assignee: FANUC CORPORATION
    Inventor: Tadashi Kurosawa
  • Patent number: 10201875
    Abstract: An apparatus for laser materials processing including a laser (4) for generating a laser beam and a laser head (5) which is movable along at least one spatial direction and is connected to the laser via a light guide, and which emits a laser beam (7) capable of processing a material. The present invention also relates to an apparatus for selective laser melting or selective laser sintering having an apparatus for laser materials processing.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: February 12, 2019
    Assignee: MTU Aero Engines AG
    Inventors: Christian Liebl, Steffen Schlothauer
  • Patent number: 10132619
    Abstract: A spot shape detection apparatus for detecting the spot shape of a laser beam oscillated from a laser oscillator includes: a focusing leans for focusing the laser beam oscillated by the oscillator; a rotary body (mirror holder) in which a plurality of mirrors for reflecting the laser beam having passed through the focusing lens are disposed on concentric circles; a drive source (motor) for rotating the rotary body at a predetermined period; a beam splitter for branching return beams of the laser beam reflected by the plurality of mirrors of the rotary body; an imaging unit which is disposed in a direction in which the return beams are branched by the beam splitter and which images spot shapes of the return beams; and a display unit for displaying images obtained by imaging by the imaging unit, in relation with the plurality of mirrors.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: November 20, 2018
    Assignee: Disco Corporation
    Inventors: Keiji Nomaru, Arata Osaki, Akimasa Nakamoto
  • Patent number: 10118250
    Abstract: A method and system for aligning a scan laser beam on a wafer include scanning a scan laser beam across a laser beam sensor along a scan line, picking up a scan laser beam, at a first position, using a first optical slit of the laser beam sensor to generate a first electrical pulse, picking up the scan laser beam, at a second position, using a second optical slit of the laser beam sensor to generate a second electrical pulse, picking up the scan laser beam, at a third position, using a third optical slit of the laser beam sensor to generate a third electrical pulse, and determining a spot size and a position of the laser beam based on the first to third electrical pulses.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: November 6, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell Budd, Robert Polastre, Paul Andry
  • Patent number: 10108174
    Abstract: The gap control axis following speed calculating unit of a numerical controller controlling a laser processing machine calculates a gap control axis following speed based on a displacement amount obtained from a separation distance and a reference distance between a nozzle tip and a workpiece, and a gap control gain. A first determining unit determines that the nozzle tip has entered an approach side when the separation distance becomes smaller than the reference distance. A first changing unit changes the gap control gain continuously in accordance with the displacement amount.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: October 23, 2018
    Assignee: FANUC Corporation
    Inventor: Takayoshi Matsumoto
  • Patent number: 10092978
    Abstract: A laser processing apparatus including a processing nozzle for irradiating a workpiece with laser beam, a driving mechanism for relatively moving the processing nozzle and the workpiece, and a gap sensor for detecting a gap between the processing nozzle and the workpiece. The apparatus includes a gap control section referring to a measured value detected by the gap sensor and calculating a manipulating variable used for controlling the driving mechanism so as to maintain the gap during execution of laser processing at a first dimension, a power monitoring section monitoring electric power from a power supply and sending an abnormality detection signal to the gap control section when a power abnormality occurs, and a control action switching section switching a control action of the gap control section so as to increase the gap from the first dimension when the abnormality detection signal is sent to the gap control section.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: October 9, 2018
    Assignee: FANUC CORPORATION
    Inventor: Hiroaki Tokito
  • Patent number: 10058920
    Abstract: The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: August 28, 2018
    Assignee: VELO3D, INC.
    Inventors: Benyamin Buller, Tasso Lappas, Rueben Mendelsberg, Alan Rick Lappen
  • Patent number: 10035218
    Abstract: A laser machining apparatus includes a height controller that performs an approach operation. The height controller uses a first approach speed and a first gain when performing the approach operation in a non-peripheral-edge portion of the workpiece, and uses a second approach speed lower than the first approach speed and a second gain lower than the first gain when performing the approach operation in a peripheral edge portion of the workpiece, and to make the time required when the approach operation is performed in the non-peripheral-edge portion of the workpiece shorter than the time required when the approach operation is performed in the peripheral edge portion of the workpiece.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 31, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hiroko Takada
  • Patent number: 9989862
    Abstract: An optical system for producing lithographic structures is disclosed. Also disclosed is a method for determining relative coordinates of a position of a writing field relative to a position of a preview field in such an optical system, and a method for producing lithographic structures using such an optical system.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 5, 2018
    Assignee: Carl Zeiss AG
    Inventors: Philipp Huebner, Gerhard Krampert, Stefan Richter, Timo Mappes
  • Patent number: 9856734
    Abstract: A system for adaptively machining a shroud of a blade used in a turbomachine is provided. The system may include a computer system including a module(s) configured to: extract geometric location data from a 3D model of the shroud after use in the turbomachine, the 3D model created by digitizing using a digitizing device. The geometric location data includes geometric location data of a hard face plane of the shroud exposed to wear during turbomachine operation and of a non-worn surface adjacent to the hard face plane substantially unexposed to wear during turbomachine operation. Comparing the geometric location data of the non-worn surface from the three-dimensional model to a manufacturing model of the blade determines a change in position of the non-worn surface from use of the blade in the turbomachine. The change in position is used to modify a machining instruction used by a machining device to repair the hard face plane.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 2, 2018
    Assignee: General Electric Company
    Inventors: Jacob Andrew Salm, Mark Carmine Bellino, James Ryan Connor, Gareth William David Lewis, Keith Alan Lord
  • Patent number: 9839977
    Abstract: An apparatus for laser materials processing including a laser (4) for generating a laser beam and a laser head (5) which is movable along at least one spatial direction and is connected to the laser via a light guide, and which emits a laser beam (7) capable of processing a material. The present invention also relates to an apparatus for selective laser melting or selective laser sintering having an apparatus for laser materials processing.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: December 12, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Christian Liebl, Steffen Schlothauer
  • Patent number: 9791620
    Abstract: It is proposed a home optical data network formed of an optical fiber comprising an optical core and an optical cladding surrounding the optical core, the optical core having a refractive graded-index profile with a minimal refractive index n1 and a maximal refractive index n0, said optical fiber being such that it has a numerical aperture NA and an optical core radius a satisfying a criterion C of quality of optical communications defined by the following equation: C = NA - 0.02 × a where ? : NA = n 0 2 - n 1 2 = n 0 · 2 ? ? ? ? with ? ? ? = n 0 2 - n 1 2 2 ? n 0 2 , ? is the normalized refractive index difference, and in that said minimal and maximal refractive indexes n1, n0 and said optical core radius a are chosen such that NA>0.20, a>10 ?m and |C|<0.20.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 17, 2017
    Assignee: DRAKA COMTEQ BV
    Inventors: Denis Molin, Pierre Sillard, Pierre Sansonetti
  • Patent number: 9636769
    Abstract: The present invention relates to a method for the generative production of components, particularly of single-crystalline or directionally-solidified components, particularly for the production of components for turbomachines, in which the component is constructed in layers on a substrate or a previously produced part of the component (3), wherein a construction in layers takes place by melting of powder material in layers with a high-energy beam (14) and solidification of the powder melt (16) takes place, wherein the high-energy beam has a beam cross section (19) in the area of its impingement on the powder material that is altered in comparison to a circular or other symmetrical cross section and/or the beam energy is distributed non-uniformly, in particular asymmetrically or eccentrically, over the beam section.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 2, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Thomas Goehler, Thomas Hess, Tobias Maiwald-Immer
  • Patent number: 9588285
    Abstract: It is proposed an optical fiber including an optical core and an optical cladding surrounding the optical core. The optical core has a refractive graded-index profile with a minimal refractive index n1 and a maximal refractive index n0. The optical fiber has a numerical aperture NA and an optical core radius ? satisfying a criterion C of quality of optical communications defined by the following equation: C=NA?0.02×a where: NA=?{square root over (n02?n12)}=n0·?{square root over (2?)} with ? = n 0 2 - n 1 2 2 ? ? n 0 2 , ? is the normalized refractive index difference. The minimal and maximal refractive indexes n1, n0 and the optical core radius a are chosen such that NA>0.20, a>10 ?m and |C|<0.20.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 7, 2017
    Assignee: DRAKA COMTEQ BV
    Inventors: Denis Molin, Pierre Sillard, Pierre Sansonetti
  • Patent number: 9533375
    Abstract: A temperature sensing apparatus configured to measure a temperature distribution of a surface to be measured is provided. The temperature sensing apparatus includes a lens set, a filtering module, a plurality of sensor arrays, and a processing unit. The lens set is configured to receive radiation from the surface to be measured. The filtering module is configured to filter the radiation from the lens set into a plurality of radiation portions respectively having different wavelengths. The sensor arrays are configured to respectively sense the radiation portions. The processing unit is configured to calculate an intensity ratio distribution of the radiation between the different wavelengths according to the radiation portions respectively sensed by the sensor arrays and determine the temperature distribution according to the intensity ratio distribution. A laser processing system and a temperature measuring method are also provided.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: January 3, 2017
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Hung Cho, Yi-Chen Hsieh, Kai-Ping Chuang, Sen-Yih Chou, Chun-Jen Lin
  • Patent number: 9505086
    Abstract: In a method for detecting flaws in continuous laser welding processes, including a sensor measures plasma emission spectrum in a range of wavelengths between ?max and ?min in N channels, each measuring radiation strength emitted in the band centered at wavelength ?i (1?i?N) and width ??i. Deviation detection is based upon calculating intensity relationships of signals measured at specific wavelengths and in comparison with pre-determined threshold values. A calibration phase ensures a series of K weldings is performed, under optimized conditions, for each a number J of spectra OJ,K, is acquired, each one corresponding to a vector of N intensity values at wavelengths ?i, 1?i?N, and a series of weldings K? is then performed, (K??K), a single welding parameter A is altered by a known quantity, for each welding being acquired a sequence of J? spectra AJ?,K?, (J??J), which are stored.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: November 29, 2016
    Assignee: CONSIGLIO NAZIONALE DELLE RICERCHE
    Inventors: Guido Toci, Roberto Pini
  • Patent number: 9423248
    Abstract: A visual error calibration method configured to calibrate visual positioning errors of a laser processing apparatus is provided. The method includes: providing an alignment mark having at least one alignment point; locating a preset point of the alignment mark at a first preset position of a working area, and locating a preset image point at a preset position of the visible area; locating the alignment point at one of the second preset positions in the working area; adjusting parameters of a scanning module to locate an alignment image point at the preset position; relatively moving the alignment image point to positions of the visible area in sequence; recording the positions of the alignment image point in the visible area, the positions of the alignment point in the working area and the parameters of the scanning module, so as to produce an alignment table.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 23, 2016
    Assignee: Industrial Technology Research Institute
    Inventors: Shao-Chuan Lu, Jie-Ting Tseng, Min-Kai Lee
  • Patent number: 9375974
    Abstract: A system for removing a coating from a surface is provided. This system includes a laser scanner, wherein the laser scanner further includes at least one laser source, wherein the at least one laser source is operative to generate at least one laser beam, and wherein the laser beam is directed onto a work surface by the laser scanner; and a controller for operating the laser scanner. The controller further includes an imaging device for imaging the work surface; a lighting device for illuminating the work surface and overwhelming light generated by the interaction of the laser beam with the work surface; and a processor for processing information collected by the imaging device and adjusting the power output of the at least one laser source, if and when desirable or necessary.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: June 28, 2016
    Assignee: Edison Welding Institute, Inc.
    Inventors: Stanley L. Ream, Craig T. Walters
  • Patent number: 9272367
    Abstract: A cutting machine includes a suction duct that is movable with a cutting head of the cutting machine, using a common drive. The suction duct is disposed beneath the workpiece support and coupled to the motion unit supporting the cutting head so that it moves with the motion unit while an opening of the suction duct remains positioned below the cutting head during a cutting operation. The suction duct removes cutting debris and dust, and protects underlying machine components from beam damage.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: March 1, 2016
    Assignee: Trumpf, Inc.
    Inventor: Leonid Zeygerman
  • Patent number: 9233434
    Abstract: A method of optimizing the focus of a fibers laser is described, which comprises positioning the output of a fibers laser relative to a workpiece; measuring at least a portion of back reflected radiation from the workpiece (step 52); determining an integral of this; changing the relative position of the output and the workpiece one or more times (step 54,56), each time determining an integral of values for the back-reflection, and using the integrals to determine optimum focus.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: January 12, 2016
    Assignee: SPI LASERS UK LIMITED
    Inventor: Stephen Keen