公开(公告)号：US11511370B2

公开(公告)日：2022-11-29

申请号：US17066823

申请日：2020-10-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Michio Sakurai ,  Toshiyuki Mishima ,  Toru Sakai ,  Kenta Kubota ,  Kensuke Urata

IPC: B23K26/03 ,  B23K26/04 ,  B23K26/06 ,  B23K26/042 ,  B23K26/044 ,  G01B11/02

Abstract: A plurality of values measured are relatively compared to determine an optical axis deviation direction in which an optical axis of a measurement beam S deviates from a laser beam L. In performing laser welding in the optical axis deviation direction, an irradiation position of the measurement beam S is changed so that the irradiation position of the measurement beam S is moved to a rear side of the center of the optical axis of the laser beam L in the welding direction.

公开(公告)号：US12017299B2

公开(公告)日：2024-06-25

申请号：US17066854

申请日：2020-10-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Michio Sakurai ,  Toru Sakai ,  Kenta Kubota ,  Takashi Urashima ,  Daichi Higashi

IPC: B23K26/21 ,  B23K26/082 ,  B23K26/70

CPC classification number: B23K26/21 ,  B23K26/082 ,  B23K26/705

Abstract: Laser welding is performed while moving irradiation positions of a laser beam and a measurement beam in forward, rightward, rearward and leftward directions, and the penetration depth of a weld portion is measured during laser welding in each of the directions. Then, a direction in which a value smaller than a reference value is measured is determined to be an optical axis deviation direction, and a correction value is added to the values measured during the laser welding when the laser welding is performed in the optical axis deviation direction.