公开(公告)号：US20190275606A1

公开(公告)日：2019-09-12

申请号：US16294086

申请日：2019-03-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji NOMURA ,  Shuhei OGURA ,  Atsushi KAWAKITA ,  Naoya KATO ,  Toru HIOKI ,  Kenji FUKUSHIMA ,  Shun KATO ,  Takashi GOTO

IPC: B23K11/11 ,  B23K11/30 ,  B23K11/31

Abstract: Provided are a method and an apparatus for resistance spot welding in which preliminary current application is executed and then main welding is executed in accordance with master patterns of various parameters obtained during the preliminary current application. The main welding is executed under welding conditions of the master patterns, and whether a welding abnormality has occurred and whether the welding abnormality is likely to occur are determined. When the welding abnormality is likely to occur, the welding conditions for the main welding are corrected so as to prevent the welding abnormality. When the welding abnormality is unlikely to occur, the welding conditions for the main welding are corrected so as to match the master patterns.