公开(公告)号：US10913131B2

公开(公告)日：2021-02-09

申请号：US13476677

申请日：2012-05-21

申请人： Yukiaki Nagata ,  Ryoji Muratsubaki ,  Masanori Kanemitsu ,  Masashi Tsunemoto

发明人： Yukiaki Nagata ,  Ryoji Muratsubaki ,  Masanori Kanemitsu ,  Masashi Tsunemoto

IPC分类号： B23K26/146 ,  B23K26/16

摘要： A laser machining apparatus that allows efficient machining of a workpiece includes a nozzle for jetting a jet liquid column, a rectifying chamber attenuating disturbances in flow of liquid, a liquid oscillating chamber guiding the liquid flowing from the rectifying chamber to a nozzle inlet opening, a laser oscillator generating a laser beam, a focusing optical system focusing the laser beam generated by the laser oscillator above the nozzle inlet opening so that the laser beam is guided by the jet liquid column, and a window opposed to the nozzle inlet opening so that the laser beam transmitting from the focusing optical system enters the liquid oscillating chamber. The liquid oscillating chamber increases a surface wave on an outer surface of the jet liquid column so that the jet liquid column jetted from the nozzle onto a workpiece is easily atomized at a machining point.