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    Spot welding method for aluminum material and aluminum material
    1.
    发明授权
    Spot welding method for aluminum material and aluminum material 有权

    公开(公告)号：US12233472B2

    公开(公告)日：2025-02-25

    申请号：US17435754

    申请日：2020-03-19

    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

    Inventor： Mai Yoshizawa ,  Tetsu Iwase

    IPC: B23K11/11 ,  B23K11/18 ,  B23K11/30 ,  B23K11/36 ,  B23K103/10

    Abstract: This spot welding method for an aluminum material comprises: a processing step in which, in a plan view, a circular emboss expanded in a direction of superposition on a second aluminum plate side is formed at a position-to-be-welded of a first aluminum plate; an arrangement step in which positions-to-be-welded are superimposed while the expansion side of the emboss faces the second aluminum plate, and the positions-to-be-welded are arranged between a pair of electrodes; a pressing step in which the superimposed aluminum plates are pinched between the electrodes, and a central side excluding a peripheral edge of the emboss is pressed; and an electrification step of performing pressing and electrification. An electrode having a tip diameter larger than the diameter of a root part of the expansion part of the emboss is used.

    Techniques for forming composite sandwich structures
    2.
    发明授权
    Techniques for forming composite sandwich structures 有权

    公开(公告)号：US12233471B2

    公开(公告)日：2025-02-25

    申请号：US17537803

    申请日：2021-11-30

    Applicant: Rolls-Royce Corporation

    Inventor： Quinlan Yee Shuck ,  Timothy Paul Fuesting ,  Scott Nelson ,  Raymond Ruiwen Xu

    IPC: B23K11/00 ,  B21D47/00 ,  B23K11/11 ,  B23K15/00 ,  B23K26/22 ,  B23K101/02

    Abstract: In some examples, a technique including positioning supports such that the supports are between a first metallic substrate and a second metallic substrate, wherein an undulating member is located between the first metallic substrate and the second metallic substrate, the undulating member defining a plurality of first peaks adjacent to a first surface of the first metallic substrate and a plurality of second peaks adjacent to a second surface of the second metallic substrate, wherein a first support of the supports is positioned such that the first support extends between a first peak of the plurality of first peaks and the second surface of the second metallic substrate; welding the first peak to the first surface of the first metallic substrate in an area of the first support; and removing the first support by at least one of a thermal removal process or a chemical removal process.

    SPOT WELDING GUN AND SYSTEM AND METHOD FOR AUTONOMOUSLY CALIBRATING WELDING QUALITY BY USING THE SAME
    3.
    发明申请
    SPOT WELDING GUN AND SYSTEM AND METHOD FOR AUTONOMOUSLY CALIBRATING WELDING QUALITY BY USING THE SAME 有权

    公开(公告)号：US20250033134A1

    公开(公告)日：2025-01-30

    申请号：US18523530

    申请日：2023-11-29

    Applicant: HYUNDAI MOTOR COMPANY ,  KIA CORPORATION ,  NAWOOTEC CO., LTD.

    Inventor： Seung Ho Lee ,  Taekue Lee

    IPC: B23K11/11 ,  B23K31/12 ,  G05D3/12

    Abstract: A system for autonomously calibrating welding quality by using a spot welding gun includes a spot welding gun configured to fix a welding target during a welding process. The spot welding gun is configured to precisely measure a welding indentation depth and perform autonomous welding quality calibration in response to an applied control signal. The system also includes welding robot equipped with the spot welding gun and configured to move to a designated welding point position, a welding controller configured to control a welding current and a welding time of the spot welding gun and inspect welding quality in real time by monitoring the welding indentation depth and dynamic resistance during the welding process, and a welding quality manager configured to receive a welding quality inspection result from the welding controller, transmit a welding condition feedback change, and control the autonomous welding quality calibration.

    WELDING GUN CONTROL DEVICE, WELDING GUN CONTROL SYSTEM, AND WELDING SYSTEM
    4.
    发明申请
    WELDING GUN CONTROL DEVICE, WELDING GUN CONTROL SYSTEM, AND WELDING SYSTEM 有权

    公开(公告)号：US20240416446A1

    公开(公告)日：2024-12-19

    申请号：US18695141

    申请日：2021-10-15

    Applicant: FANUC CORPORATION

    Inventor： Masao MOTOHASHI ,  Takahiro KITANO

    IPC: B23K11/11

    Abstract: Provided is a welding gun control device whereby it is possible to reduce a load placed on a workpiece during workpiece detection in spot welding. This welding gun control device for controlling a welding gun for pressing an object to be welded between a movable electrode driven by a servomotor and a counter electrode facing the movable electrode and performing welding comprises: an operation control unit for causing the movable electrode to move at a first speed in a state in which the object to be welded is disposed between the movable electrode and the counter electrode, and causing the counter electrode or the object to be welded to move at a second speed slower than the first speed; and a workpiece detection unit for detecting the object to be welded on the basis of the operating state of the servomotor for driving the movable electrode, while the movable electrode and the counter electrode are caused to move by the operation control unit.

    METHOD OF RESISTANCE SPOT WELDING
    5.
    发明申请
    METHOD OF RESISTANCE SPOT WELDING 有权

    公开(公告)号：US20240391032A1

    公开(公告)日：2024-11-28

    申请号：US18663242

    申请日：2024-05-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Shota EJIMA ,  Tomoko OGASAHARA ,  Tomohiko SEKIGUCHI ,  Toru HIOKI ,  Nao KAWABE ,  Takaya OBARA

    IPC: B23K31/00 ,  B23K11/11 ,  B23K11/36

    Abstract: A method of resistance spot welding comprises: preparing a machine learning model having learned a relation between a feature of a test data and a quality of a welding state of a test welding, the test data recording a time series change in an expansion amount of a workpiece in the test welding; and determining the quality of the welding state of a main welding using a main welding data and the machine learning model, the main welding data recording a time series change in an expansion amount of the workpiece in the main welding. The feature includes a first feature and a second feature, the first feature being with respect to a gradient of a change in an expansion amount of the workpiece during an expansion period in which the workpiece expands by energization, the second feature being with respect to a gradient of a change in an expansion amount of the workpiece during a contraction period in which the workpiece contracts after the expansion period.

    METHOD FOR MANUFACTURING WELDED STRUCTURE
    8.
    发明公开
    METHOD FOR MANUFACTURING WELDED STRUCTURE 审中-公开

    公开(公告)号：US20240326152A1

    公开(公告)日：2024-10-03

    申请号：US18599722

    申请日：2024-03-08

    Applicant: Yosuke TAMADA ,  Koji NOMURA ,  Tomohiko SEKIGUCHI ,  Keigo YASUDA

    Inventor： Yosuke TAMADA ,  Koji NOMURA ,  Tomohiko SEKIGUCHI ,  Keigo YASUDA

    IPC: B23K11/11 ,  B23K11/24 ,  B23K101/18

    CPC classification number: B23K11/115 ,  B23K11/24 ,  B23K2101/18

    Abstract: A method for manufacturing a welded structure and a welding apparatus capable of reducing formation of burrs are provided. The method for manufacturing the welded structure according to the present disclosure is the method for manufacturing the welded structure formed by spot-welding a laminate formed of three or more metal plates, at least one metal plate of the three or more metal plates being thinner than the other metal plates. This manufacturing method includes a step of energizing a welding point of the laminate while pressurizing it and causing a main current to flow through the welding point of the laminate and a step of continuously energizing the welding point of the laminate while pressurizing it and causing a large current that is larger than the main current to flow through the welding point of the laminate.

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