公开(公告)号：US20190070695A1

公开(公告)日：2019-03-07

申请号：US16164075

申请日：2018-10-18

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kohei HISADA ,  Atsushi KAWAKITA ,  Masahiro NAKATA

IPC分类号： B23K26/352 ,  B23K26/22 ,  B23K26/32 ,  B23K26/082 ,  B23K26/244

摘要： A laser welding method includes: forming a melted section in which plural metallic workpieces within a weld region are melted by projecting a first laser beam onto said weld region with parts of the workpieces being set as the weld region when the workpieces are welded; and projecting a second laser beam while the melted section is being solidified or after a solidified section in which the melted section is solidified is formed such that the second laser beam circles around center of the melted section or the solidified section from an irradiation start position deviated from said center toward said center or such that the second laser beam is focused to the center of the melted section or the solidified section from an irradiation start region that includes the center and a periphery thereof.

公开(公告)号：US20150283648A1

公开(公告)日：2015-10-08

申请号：US14680455

申请日：2015-04-07

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kohei HISADA ,  Atsushi KAWAKITA ,  Masahiro NAKATA

IPC分类号： B23K26/00 ,  B23K26/20

CPC分类号： B23K26/352 ,  B23K26/082 ,  B23K26/22 ,  B23K26/244 ,  B23K26/32 ,  B23K2101/18 ,  B23K2103/04 ,  B23K2103/10 ,  Y10T403/479

摘要： A laser welding method includes: forming a melted section in which plural metallic workpieces within a weld region are melted by projecting a first laser beam onto said weld region with parts of the workpieces being set as the weld region when the workpieces are welded; and projecting a second laser beam while the melted section is being solidified or after a solidified section in which the melted section is solidified is formed such that the second laser beam circles around center of the melted section or the solidified section from an irradiation start position deviated from said center toward said center or such that the second laser beam is focused to the center of the melted section or the solidified section from an irradiation start region that includes the center and a periphery thereof.

摘要翻译： 一种激光焊接方法，其特征在于，包括以下工序：形成熔融部，在焊接区域内的多个金属工件熔融时，将第一激光束投射到所述焊接区域，在工件被焊接时，将工件的一部分设定为焊接区域; 并且在熔融部分固化的同时投射第二激光束，或者在其中熔化部分固化的凝固部分形成为使得第二激光束围绕熔化部分的中心环绕或凝固部分从照射开始位置偏离 从所述中心朝向所述中心，或者使得第二激光束从包括其中心和周边的照射开始区域聚焦到熔融部分的中心或凝固部分。

公开(公告)号：US20150336212A1

公开(公告)日：2015-11-26

申请号：US14715978

申请日：2015-05-19

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kohei HISADA ,  Toru HIOKI ,  Junichiro MAKINO ,  Kazuyuki OGUSU ,  Masahiro NAKATA

IPC分类号： B23K26/22 ,  B23K26/32

CPC分类号： B23K26/22 ,  B23K26/082

摘要： A laser welding method includes: projecting a laser beam onto irradiation regions on plural metallic workpieces such that a weld section is formed when the workpieces are joined by laser welding, the weld section being formed of plural nuggets, and each of the irradiation regions being formed with each of the nuggets. The nuggets are sequentially formed by sequentially projecting the laser beam onto the irradiation regions that respectively correspond to the nuggets. The laser beam is projected onto each of the irradiation regions such that an amount of input heat from the laser beam that is projected onto each of the irradiation regions to the workpiece is reduced as the nuggets are sequentially formed.

摘要翻译： 激光焊接方法包括：将激光束投射到多个金属工件上的照射区域上，使得当通过激光焊接接合工件时形成焊接部分，焊接部分由多个熔核形成，并且形成每个照射区域 与每个掘金。 通过将激光束顺序地投射到分别对应于掘金的照射区域上依次形成块体。 激光束投射到每个照射区域上，使得从依次形成块体的时候，将投射到每个照射区域上的激光束的投入热量减少到工件。

公开(公告)号：US20160114424A1

公开(公告)日：2016-04-28

申请号：US14891105

申请日：2014-05-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kohei HISADA ,  Atsushi KAWAKITA ,  Masahiro NAKATA ,  Junichi OKURA

IPC分类号： B23K26/03 ,  B23K26/08 ,  B23K26/16 ,  B23K26/362

CPC分类号： B23K26/03 ,  B23K26/0006 ,  B23K26/0869 ,  B23K26/16 ,  B23K26/352 ,  B23K26/361 ,  B23K26/362 ,  B23K2101/18 ,  B23K2103/50 ,  C21D1/09 ,  C21D9/46 ,  C21D2221/00 ,  C21D2221/10

摘要： A laser surface treatment method for treating a surface of a workpiece having an irregular shape includes radiating a laser so that the surface of the workpiece which is placed in a direction forming an acute angle with respect to the laser becomes an untreated plane. The method also includes scanning with the laser so that the surface of the workpiece which is placed in the direction forming an acute angle with respect to the laser becomes an untreated plane.

摘要翻译： 用于处理具有不规则形状的工件的表面的激光表面处理方法包括照射激光，使得放置在相对于激光器成锐角的方向的工件的表面成为未处理的平面。 该方法还包括用激光扫描，使得相对于激光器形成锐角的方向放置的工件的表面成为未处理的平面。

公开(公告)号：US20150298255A1

公开(公告)日：2015-10-22

申请号：US14691028

申请日：2015-04-20

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kohei HISADA ,  Shuhei OGURA ,  Junichiro MAKINO ,  Kazuyuki OGUSU ,  Masahiro NAKATA

IPC分类号： B23K26/20 ,  B23K26/22 ,  B23K26/32

CPC分类号： B23K26/22 ,  B23K26/32 ,  B23K2101/18 ,  B23K2103/10

摘要： A welding method for joining together a plurality of welding objects by overlapping the plurality of welding objects and performing laser welding includes forming a weld by forming a plurality of nuggets along a virtual closed curve on the welding objects, by laser welding. A ratio of a diameter of the nuggets to a pitch dimension between the nuggets that are adjacent to each other is larger than 1/2 and no more than 1.

摘要翻译： 通过使多个焊接对象重叠并进行激光焊接而将多个焊接对象接合在一起的焊接方法包括通过激光焊接沿焊接对象上的虚拟闭合曲线形成多个块来形成焊接。 矿块的直径与彼此相邻的矿块之间的间距尺寸的比例大于1/2并且不大于1。