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公开(公告)号：JP4911232B2
公开(公告)日：2012-04-04
申请号：JP2010040063
申请日：2010-02-25
Applicant: トヨタ自動車株式会社
IPC: G01B11/06 , G01B11/24 , G01N21/892
CPC classification number: B23K3/08 , B23K31/125 , G01B11/25
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公开(公告)号：JP4753048B2
公开(公告)日：2011-08-17
申请号：JP2007107135
申请日：2007-04-16
Applicant: トヨタ自動車株式会社
CPC classification number: B23K26/0869 , B23K26/06 , B23K26/0626 , B23K26/244 , B23K2201/006 , B23K2201/18
Abstract: A laser welding method for stacked workpieces according to the present invention, a laser irradiation diameter that is irradiated on a surface of one workpiece 1 among two stacked workpieces 1 and 2 is set such that a laser irradiation diameter B at a weld ending-edge portion is equal to or greater than approximately 1.5 times a laser irradiation diameter A at a weld starting-edge portion. Thus, at the weld ending-edge portion, the material is melted in a wider area compared to the conventional example, and therefore, the melted material is supplied to the center portion of the weld ending-edge portion while the weld ending-edge portion is solidifying. As a result, a depth of the recess at the weld ending-edge portion can be made shallow enough to guarantee the welding quality of each of the workpieces 1 and 2.
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公开(公告)号：JP4624089B2
公开(公告)日：2011-02-02
申请号：JP2004354011
申请日：2004-12-07
Applicant: トヨタ自動車株式会社 , 新日本製鐵株式会社
IPC: B23K26/00 , B23K26/20 , B23K103/04
Abstract: PROBLEM TO BE SOLVED: To make determination of quality of a laser welded part fully satisfactory in laser lap welding though the laser welded quality changes by the lap gap fluctuation of materials to be welded. SOLUTION: This is an apparatus for determining quality of a laser welded part MP in lap welding in which a laser beam LB is emitted to materials M1, M2 to be welded. The apparatus is equipped with: a first photodetector 2 that detects a light beam generated from the laser welded part in accordance with the lap welding, on the same axis as the emitted laser beam; a second photodetector 5 that detects a light beam generated from the laser welded part in accordance with the lap welding, at a prescribed angle relative to the surface of the materials to be welded; and a quality determining means 4 for determining the quality of the laser welded part by receiving a first photodetecting signal from the first photodetector and a second photodetecting signal from the second photodetector. COPYRIGHT: (C)2006,JPO&NCIPI
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公开(公告)号：JP5292760B2
公开(公告)日：2013-09-18
申请号：JP2007265757
申请日：2007-10-11
Applicant: トヨタ自動車株式会社
Abstract: PROBLEM TO BE SOLVED: To provide a laser brazing device which is inexpensive and is highly reliable by achieving stable supply of a brazing filler metal by the guide member of the brazing filler metal with a simple configuration. SOLUTION: The laser brazing device 1 is provided with a laser torch 2, a brazing filler metal feeder 4, and a brazing filler metal feed guide 3, and supplies the brazing filler metal 10 supplied by the brazing filler metal feeder 4 along the brazing filler metal feed guide 3 to an irradiation point S by the laser torch 2 on a brazing object 11. The laser torch 2, and a brazing filler metal guide nozzle 3b constituting the brazing filler metal feed guide 3 are connected via a leaf spring 3a. COPYRIGHT: (C)2009,JPO&INPIT
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公开(公告)号：JP4873854B2
公开(公告)日：2012-02-08
申请号：JP2004353750
申请日：2004-12-07
Applicant: トヨタ自動車株式会社 , 新日本製鐵株式会社
Abstract: PROBLEM TO BE SOLVED: To make determination of quality of a laser welded part fully satisfactory in laser lap welding though the laser welded quality changes by the lap gap fluctuation of materials to be welded. SOLUTION: This is an apparatus for determining quality of a laser welded part in lap welding in which a laser beam LB is movingly emitted to materials M1, M2 to be welded. The apparatus is equipped with: a photodetector 5 that detects a light beam generated from the laser welded part in accordance with the lap welding, on the same axis as the emitted laser beam and at different positions in the moving direction of the laser beam; and a quality determining means 4 that determines the quality of the laser welded part by receiving a photodetecting signal detected at the different positions in the moving direction of the laser beam outputted from the photodetector. COPYRIGHT: (C)2006,JPO&NCIPI
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Patent Agency Ranking
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公开(公告)号：JP5045588B2
公开(公告)日：2012-10-10
申请号：JP2008186298
申请日：2008-07-17
Applicant: トヨタ自動車株式会社
IPC: B23K20/12
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公开(公告)号：JP5131437B2
公开(公告)日：2013-01-30
申请号：JP2007176256
申请日：2007-07-04
Applicant: トヨタ自動車株式会社
CPC classification number: B23K26/147 , B23K9/1278 , B23K26/044
Abstract: Welding equipment includes a torch for irradiating a laser beam B, wire feeding means 2 for feeding a filler wire F, and tracking means 3 for controlling the moving tracks of the torch 1 and the wire feeding means 2 so as to make the moving tracks follow a welding line Y. The tracking means 3 has a contactor 30A provided so as to be advanceable/retractable for making contact with a joint object W resiliently. The torch and the wire feeding means 2 are moved so as to follow the welding line Y by touching the contactor 30A of the tracking means 3 resiliently to the joint object W while feeding the filler wire F to a welding portion and irradiating that portion with the laser beam B, thereby joining the joint objects W.
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公开(公告)号：JP4636261B2
公开(公告)日：2011-02-23
申请号：JP2005300537
申请日：2005-10-14
Applicant: トヨタ自動車株式会社
IPC: B23K26/20 , B23K26/00 , B23K26/10 , B23K37/04 , B23K103/04
CPC classification number: B23K26/26 , B23K26/03 , B23K37/0408 , B23K2201/18 , B23K2203/04
Abstract: A butt welding system and a butt welding method of steel plate by which the quality of a product can be ensured. Butting portions of blank members (1,2) to be joined together are butted and a predetermined butting load is applied to the butting portion, wherein the blank members (1,2) are moved relatively in the direction of the welding line thus matching the butting portions. Protrusions and recesses formed on each butting portion of each blank member (1,2) are flattened, whereby linear precision at each butting portion of each blank member (1,2) is enhanced as compared with a case where the butting portions are not matched. Since the gap is reduced extremely at the butting portion, welding is facilitated at the butting portion. Good welding beads are thereby obtained at the butting portion and the quality of a product is ensured.
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公开(公告)号：JP3558205B2
公开(公告)日：2004-08-25
申请号：JP31257298
申请日：1998-11-02
Applicant: トヨタ自動車株式会社
CPC classification number: Y02P10/253
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