公开(公告)号：US20160136756A1

公开(公告)日：2016-05-19

申请号：US14935002

申请日：2015-11-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shuhei OGURA ,  Kazuyuki OGUSU ,  Jyunichiro MAKINO ,  Hiroaki KISHI ,  Kousuke TSUJI

IPC: B23K26/06 ,  B23K26/21 ,  B23K26/70 ,  B23K31/12

CPC classification number: B23K26/0626 ,  B23K26/032 ,  B23K26/21 ,  B23K26/705 ,  B23K26/706 ,  B23K26/707 ,  B23K31/125

Abstract: A laser welding method is capable of easily restraining poor welding when spatters adhere to a protective glass of an optical system. The laser welding method includes a step of calculating a decrease-amount of the laser power before laser welding is performed by irradiating a welding portion of a workpiece with the laser beam having a predetermined power. The step of calculating the decrease-amount includes irradiating the welding portion with an inspecting laser beam having a power smaller than the predetermined power, receiving a return beam of the inspecting laser beam, measuring an intensity of the return beam, and comparing the intensity of the return beam with a standard intensity to calculate an amount of decrease in power of the inspecting laser beam at the welding portion.

Abstract translation: 激光焊接方法能够容易地抑制飞溅物附着在光学系统的保护玻璃上时的不良焊接。 激光焊接方法包括通过用具有预定功率的激光束照射工件的焊接部分来计算激光焊接之前的激光功率的减少量的步骤。 计算减少量的步骤包括用具有小于预定功率的功率的检查激光束照射焊接部分，接收检查激光束的返回光束，测量返回光束的强度，并且比较 返回光束具有标准强度，以计算在焊接部分处的检查激光束的功率的减小量。