公开(公告)号：US20190176270A1

公开(公告)日：2019-06-13

申请号：US16301670

申请日：2017-05-17

Applicant: AMADA HOLDINGS CO., LTD. ,  NISSHIN STEEL CO., LTD.

Inventor： Hideo HARA ,  Masahito ITO ,  Masanori UEHARA ,  Hiroshi ASADA ,  Hirokazu SASAKI ,  Hiroshi HORIKAWA

IPC: B23K26/38 ,  B23K26/046 ,  B23K26/14 ,  B23K26/40

Abstract: A laser cutting and machining method for plated steel plated, when irradiating a laser beam LB on to the upper surface of a plated steel plate W and laser cutting and machining same: a plating layer-containing metal that has been melted and/or evaporated by the irradiation of the laser beam LB is caused to flow on to a cut surface of the plated steel plate W as a result of assist gas that is jetted towards a laser machining units; and the plating layer-containing metal is coated on the cut surface.

公开(公告)号：US20200306892A1

公开(公告)日：2020-10-01

申请号：US16649520

申请日：2018-10-02

Applicant: AMADA HOLDINGS CO., LTD.

Inventor： Hideo HARA ,  Masanori UEHARA

IPC: B23K31/10 ,  B23K26/00 ,  B23K26/06 ,  B23K26/12 ,  B23K35/38 ,  B23K26/14 ,  B23K37/04 ,  B23K26/08 ,  B23K37/06

Abstract: Laser cutting on a plated steel sheet is executed by cutting the plated steel sheet by irradiating the plated steel sheet covered with a plate metal with laser light at a wavelength in a 1 micrometer band; and emitting assist gas onto a cut surface of the plated steel sheet, the cut surface being formed. in the step of cutting, to make the plate metal fused by irradiation of the laser light flow to the cut surface so as to cover the cut surface with the plate metal.

公开(公告)号：US20200001401A1

公开(公告)日：2020-01-02

申请号：US16490180

申请日：2018-03-19

Applicant: AMADA HOLDINGS CO., LTD.

Inventor： Yingjun JIN ,  Hitoshi OMATA ,  Hiroaki ISHIGURO ,  Takuya OKAMOTO ,  Hideo HARA ,  Masato KUNIHIRO

IPC: B23K26/38 ,  B23K26/08 ,  G05B19/4097

Abstract: According to a laser cutting method, a processed part is laser-cut so that the processed part doesn't drop off from a sheet-shaped workpiece. In the laser cutting method, a cut slit of a pressing protrusion, which is curved due to a laser cutting process along an outline of the processed part and then presses a peripheral surface of the processed part, is preliminarily formed around the processed part to be cut out from the workpiece. Then, the laser cutting process is carried out along the outline of the processed part. The pressing protrusion curves toward the processed part due to the laser cutting process of the processed part, and then the processed part is retained by the pressing protrusion.