公开(公告)号：US20150266132A1

公开(公告)日：2015-09-24

申请号：US14660178

申请日：2015-03-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi KAWAKITA ,  Shuhei OGURA ,  Yuta IWAMOTO ,  Hiroaki KISHI ,  Nobuhiro IIJIMA

IPC: B23K26/03 ,  B23K26/24

CPC classification number: B23K26/032 ,  B23K26/22 ,  B23K26/24

Abstract: Provided is a laser beam welding apparatus capable of correctly detecting the beginning and the end of one welding point even in remote laser beam welding. The laser beam welding apparatus includes a head which irradiates a workpiece with a laser beam, an optical receiver which receives a reflected light of the laser beam from the workpiece, and a controller. The optical receiver receives only a laser beam and a plasma of the reflected light. The controller determines that one welding point begins when a time during which intensity of the reflected light is larger than or equal to a second set-intensity is longer than or equal to a first set-time, and determines that the one welding point ends when a time during which the intensity of the reflected light is smaller than or equal to a first set-intensity is longer than or equal to a second set-time.

Abstract translation: 提供了即使在远程激光束焊接中也能够正确地检测一个焊接点的开始和结束的激光束焊接装置。 激光束焊接装置包括用激光束照射工件的头部，接收来自工件的激光束的反射光的光接收器和控制器。 光接收器仅接收激光束和反射光的等离子体。 当反射光的强度大于或等于第二设定强度的时间大于或等于第一设定时间时，控制器确定一个焊接点开始，并且确定一个焊接点在 反射光的强度小于或等于第一设定强度的时间长于或等于第二设定时间。