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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：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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