公开(公告)号：US20180361507A1

公开(公告)日：2018-12-20

申请号：US16002437

申请日：2018-06-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru HIOKI ,  Shuhei OGURA ,  Hiroki TORIYAMA ,  Ryosuke KAWAI ,  Shun KATO

IPC: B23K26/242

Abstract: While a laser-beam application position is moved along a locus which circularly or elliptically circles around a locus center so as to cross a weld line that is a boundary between a first metal plate and a second metal plate overlapped with each other, the locus center is moved in a direction parallel to a weld line. A moving direction of the laser-beam application position is set such that the laser beam is first applied to the first metal plate and then to the second metal plate when the laser beam passes through an unmelted zone of the first metal plate and the second metal plate. The unmelted zone is located downstream of a range through which the laser beam has already passed in the direction parallel to the weld line.

公开(公告)号：US20190308271A1

公开(公告)日：2019-10-10

申请号：US16364628

申请日：2019-03-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru HIOKI ,  Atsushi KAWAKITA ,  Shuhei OGURA ,  Ryosuke KAWAI ,  Takashi GOTO ,  Kazuho TAKISHITA

IPC: B23K26/244 ,  B23K26/082

Abstract: Partial welding of partially joining together two metal plates by melting at least one area inside a joining region of the metal plates is performed. After a lapse of a predetermined time from completion of the partial welding, main welding of joining together the metal plates by melting the joining region entirely is performed.

公开(公告)号：US20210046585A1

公开(公告)日：2021-02-18

申请号：US17084698

申请日：2020-10-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru HIOKI ,  Shuhei OGURA ,  Hiroki TORIYAMA ,  Ryosuke KAWAI ,  Shun KATO

IPC: B23K26/242

Abstract: While a laser-beam application position is moved along a locus which circularly or elliptically circles around a locus center so as to cross a weld line that is a boundary between a first metal plate and a second metal plate overlapped with each other, the locus center is moved in a direction parallel to a weld line. A moving direction of the laser-beam application position is set such that the laser beam is first applied to the first metal plate and then to the second metal plate when the laser beam passes through an unmelted zone of the first metal plate and the second metal plate. The unmelted zone is located downstream of a range through which the laser beam has already passed in the direction parallel to the weld line.