公开(公告)号：US20240307989A1

公开(公告)日：2024-09-19

申请号：US18675946

申请日：2024-05-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Noriyuki MATSUOKA ,  Kazuya Ooguri ,  Akiya Shimoura ,  Masaru Kowa ,  Junji Fujiwara

IPC: B23K9/12 ,  B23K9/09

CPC classification number: B23K9/12 ,  B23K9/09

Abstract: A second member has a larger heat capacity than a first member. Welding is conducted while moving a welding torch in a weaving motion so that the welding torch crosses a boundary position between the first member and the second member. During the weaving motion, the first member is subjected to first welding and the second member is subjected to second welding. The first welding includes at least the short-circuit welding. The second welding includes at least the pulse welding.

公开(公告)号：US20210031290A1

公开(公告)日：2021-02-04

申请号：US17072648

申请日：2020-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Noriyuki MATSUOKA ,  Masaru KOWA ,  Junji FUJIWARA

IPC: B23K9/09 ,  B23K9/095 ,  B23K9/16 ,  B23K9/23 ,  B23K9/173 ,  B23K9/12 ,  B23K9/073 ,  B23K35/38

Abstract: A pulse welding period includes a first peak period for supplying a first peak current to a welding wire, a first base period for supplying a base current smaller than the first peak current to the welding wire, a second peak period for supplying a second peak current to the welding wire after alternately repeating the first peak period and the first base period (n−1) times (n is an integer equal to or larger than 2), and a second base period for supplying the base current to the welding wire. The second peak current is larger than the first peak current, and droplets are transferred from the welding wire during the second peak period or the second base period.

公开(公告)号：US20180126491A1

公开(公告)日：2018-05-10

申请号：US15564207

申请日：2016-05-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuyuki NAKAGAWA ,  Yasushi MUKAI ,  Atsuhiro KAWAMOTO ,  Junji FUJIWARA ,  Noriyuki MATSUOKA

IPC: B23K26/082 ,  B23K26/22 ,  B23K26/00 ,  B23K26/06

CPC classification number: B23K26/082 ,  B23K26/0626 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0884 ,  B23K26/22 ,  B23K26/244 ,  B23K26/354 ,  B23K2103/04

Abstract: A welding target is irradiated with a laser beam so as to form a beam spot that moves relatively with respect to the welding target along a locus having a spiral shape rotating around a rotation center moving in a welding direction. The welding target is welded using the laser beam irradiated with. While the welding target is irradiated with the laser beam, the welding target is irradiated with the laser beam based on an interval coefficient which is a value indicating an overlapping degree of the locus having the spiral shape in the welding direction.

公开(公告)号：US20170001261A1

公开(公告)日：2017-01-05

申请号：US15107347

申请日：2014-12-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junji FUJIWARA ,  Yasushi MUKAI ,  Atsuhiro KAWAMOTO ,  Tatsuyuki NAKAGAWA ,  Noriyuki MATSUOKA

IPC: B23K26/322 ,  B23K26/00 ,  B25J11/00 ,  B23K26/244

CPC classification number: B23K26/322 ,  B23K26/0006 ,  B23K26/082 ,  B23K26/22 ,  B23K26/244 ,  B23K2101/006 ,  B23K2101/34 ,  B23K2103/04 ,  B23K2103/08 ,  B25J11/005 ,  G05B2219/45135

Abstract: A laser welding method of the present disclosure includes a first step, a second step, and a third step. In the first step, a first workpiece and a second workpiece are stacked on each other. Each of the first workpiece and the second workpiece has a surface coated with a first material and is made of a second material, which is different from the first material. In the second step, a first region in which the first workpiece and the second workpiece are stacked on each other is irradiated with a laser beam so that the laser beam penetrates both the first workpiece and the second workpiece. In the third step, a second region including the first region is irradiated with a laser beam in a spiral fashion.

Abstract translation: 本公开的激光焊接方法包括第一步骤，第二步骤和第三步骤。 在第一步骤中，第一工件和第二工件彼此堆叠。 第一工件和第二工件中的每一个具有涂覆有第一材料的表面，并且由与第一材料不同的第二材料制成。 在第二步骤中，用激光束照射其中第一工件和第二工件彼此堆叠的第一区域，使得激光束穿过第一工件和第二工件。 在第三步骤中，以螺旋方式用激光束照射包括第一区域的第二区域。