公开(公告)号：US20230158606A1

公开(公告)日：2023-05-25

申请号：US18158457

申请日：2023-01-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： JINGBO WANG ,  TSUTOMU SUGIYAMA ,  SHUNSUKE KAWAI ,  KENZO SHIBATA ,  MASASHI ISHIGURO ,  ATSUHIRO KAWAMOTO

IPC: B23K26/21 ,  B23K26/082 ,  B23K26/08

CPC classification number: B23K26/21 ,  B23K26/082 ,  B23K26/0884

Abstract: Provided is a laser welding method including a welding step of welding a workpiece by irradiating a surface of a workpiece with a laser beam that is swept two-dimensionally while being advanced in an X direction. In the welding step, the laser beam is swept to draw a predetermined pattern on the surface of the workpiece. Additionally, drawing speed and output of the laser beam are controlled to have an equal amount of heat input per unit drawing length in the predetermined pattern over the entire length of the predetermined pattern. The predetermined pattern is a continuous pattern in which two annular patterns are in contact with each other at one point.

公开(公告)号：US20230013501A1

公开(公告)日：2023-01-19

申请号：US17935111

申请日：2022-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： JINGBO WANG ,  TSUTOMU SUGIYAMA ,  SHUNSUKE KAWAI ,  KENZO SHIBATA ,  MASASHI ISHIGURO

IPC: B23K26/21

Abstract: A laser welding method includes a welding step of applying a laser beam to a surface of a workpiece while the laser beam is caused to advance in an X-direction and scanning with the laser beam is simultaneously performed in a Y-direction intersecting the X-direction. The welding step includes a first weaving step of causing the laser beam to weave in the Y-direction with first amplitude (A1), and a second weaving step of causing the laser beam to weave with a predetermined amplitude smaller than first amplitude (A1) at both end portions of a weaving trajectory drawn by the laser beam in the first weaving step.

公开(公告)号：US20170008128A1

公开(公告)日：2017-01-12

申请号：US15113782

申请日：2015-02-18

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： MASASHI ISHIGURO ,  MANABU NISHIHARA ,  YOSHINORI SASAKI

IPC: B23K26/382 ,  G01J1/42

CPC classification number: B23K26/382 ,  B23K2101/42 ,  G01J1/4257 ,  H01S3/0071 ,  H01S3/1305

Abstract: A laser beam machine has a control unit. The control unit transmits an output signal for starting an output of the laser beam at a first time point and stopping the output of the laser beam at a second time point which is later than the first time point, to the laser oscillator. The control unit receives a detection signal indicating first detection intensity which is greater than first preset intensity from the light detector, at a third time point which is later than the second time point. The control unit transmits a drive signal for controlling the emission unit to be driven, to the emission unit, at a fourth time point equal to or later than the third time point. The control unit transmits a warning signal at a fifth time point equal to or later than the third time point.

Abstract translation: 激光束机具有控制单元。 控制单元在第一时间点发送用于开始激光束的输出的输出信号，并且在比第一时间点晚的第二时间点将激光束的输出停止到激光振荡器。 控制单元在比第二时间点晚的第三时间点从光检测器接收指示大于第一预设强度的第一检测强度的检测信号。 控制单元在等于或晚于第三时间点的第四时间点将用于控制要驱动的发射单元的驱动信号发送到发射单元。 控制单元在等于或晚于第三时间点的第五时间点发送警告信号。