公开(公告)号：US20190351507A1

公开(公告)日：2019-11-21

申请号：US16476075

申请日：2017-11-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Makoto RYUDO ,  Doukei NAGAYASU ,  Hitoshi NISHIMURA ,  Jingbo WANG ,  Masatoshi NISHIO ,  Hideaki YAMAGUCHI ,  Yoshiaki TAKENAKA ,  Kiyotaka EIZUMI ,  Ryo ISHIKAWA

IPC: B23K26/08 ,  B23K26/06

Abstract: A laser processing head includes parallel plate (17) that shifts an optical axis of a laser beam to be emitted from a top to a bottom of body case (6) from a first optical axis to a second optical axis, parallel plate (19) that shift the optical axis of the laser beam from the second optical axis to a third optical axis, and body case (6) that accommodates holders (7 and 18) that respectively hold parallel plates (17 and 19). The laser processing head further includes a rotation mechanism that rotates holders (7 and 18) around a first rotary axis. Opening (7a) that a laser beam reflected by an incident surface of second parallel plate (19) passes through is formed in holder (7), and light receiving part (6a) that receives the laser beam having passed through opening (7a) is disposed in body case (6).

公开(公告)号：US20210388859A1

公开(公告)日：2021-12-16

申请号：US17459377

申请日：2021-08-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junji FUJIWARA ,  Atsuhiro KAWAMOTO ,  Hitoshi NISHIMURA ,  Yasushi MUKAI ,  Shigeki YONEMORI

IPC: F16B5/08 ,  B23K9/02 ,  B23K9/167 ,  B23K10/02 ,  B23K9/173

Abstract: A joint structure includes a first metallic material having a first projection, a second metallic material similar to and weldable to the first metallic material, and a different material having a first penetrating part and sandwiched between the first and second metallic materials, the different material being difficult to weld to the first and second metallic materials. The first projection is smaller than the first penetrating part and is spaced from the rim of the first penetrating part. The first projection is positioned in the first penetrating part and spaced from the second metallic material by a gap. The gap has a size of a predetermined percentage of the thickness of the first projection to which arc welding is applied. The first and second metallic materials are melted and joined together inside the first penetrating part to compress and fix the different material, so all three are fixed together.

公开(公告)号：US20190293873A1

公开(公告)日：2019-09-26

申请号：US16466404

申请日：2017-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kiyotaka EIZUMI ,  Makoto RYUDO ,  Doukei NAGAYASU ,  Hitoshi NISHIMURA ,  Jingbo WANG ,  Masatoshi NISHIO ,  Hideaki YAMAGUCHI ,  Yoshiaki TAKENAKA ,  Ryo ISHIKAWA

IPC: G02B6/32 ,  G02B6/42 ,  G02B6/26 ,  B23K26/03 ,  B23K26/06 ,  H01S5/022

Abstract: There is provided an optical axis alignment mechanism between the laser oscillator and the optical fiber. The laser oscillator emits laser light, which then emerges from the emission end of the optical fiber via the axis alignment mechanism. Part of the laser light is received on the light-receiving surface of the CCD camera of a laser light evaluator. Thus, the laser light evaluator acquires a light intensity distribution. The light intensity distribution is used by the optical axis alignment mechanism to align the axis of the laser oscillator with the axis of the optical fiber.

公开(公告)号：US20190076962A1

公开(公告)日：2019-03-14

申请号：US16088617

申请日：2017-03-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsuhiro KAWAMOTO ,  Junji FUJIWARA ,  Yasushi MUKAI ,  Hitoshi NISHIMURA

IPC: B23K26/21 ,  B23K26/323 ,  B23K26/324 ,  B29C65/16 ,  B23K11/30

Abstract: A laser welding method according to the present disclosure includes a step in which a third material is interposed between a first material and a second material, which are made of the same type of metal so as to be weldable to one another, and at least one of which is provided with a protruding portion, wherein the third material is difficult to weld to the first material and the second material and has a through-hole portion into which the protruding portion is inserted. The method also includes a step in which, when the third material is interposed between the first material and the second material, a region corresponding to the protruding portion is irradiated with a laser beam from the first material side, and the first material and the second material are welded via the through-hole portion. In the step in which the third material is interposed between the first material and the second material, a first gap is provided between the protruding portion and the inner peripheral face of the through-hole portion, and a second gap corresponding to the plate thickness of the first material is provided between the first material and the second material in the region corresponding to the protruding portion.

公开(公告)号：US20210146481A1

公开(公告)日：2021-05-20

申请号：US17162510

申请日：2021-01-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masatoshi NISHIO ,  Jingbo WANG ,  Hitoshi NISHIMURA ,  Motoki MORIOKA

IPC: B23K26/70 ,  B23K26/06 ,  B23K26/38 ,  B23K26/082

Abstract: A first detector detects an output of a reflected beam from an exit end surface of a first parallel plate. A determination unit determines that an abnormality occurs in the first parallel plate when the detection value of the first detector is smaller than a predetermined determination threshold.