Multispot Laser Welding System for Car Body Assembling

1998 ◽  
Author(s):  
Fabrizio Bruno ◽  
Luigi Chiorino ◽  
Luciano Marcon ◽  
Luigi Petri ◽  
Marco Brandizzi

2021 ◽  
Vol 33 (2) ◽  
pp. 421-431
Author(s):  
Masashi Oikawa ◽  
Kentaro Atsumi ◽  
Yosuke Otsuka ◽  
Naoki Kawada ◽  
◽  
...  

Stainless steel railway car bodies are assembled by joining the outer plates and the pillar materials using resistance spot welding. In recent years, more and more car bodies are being assembled using laser welding in addition to the resistance spot welding. For this laser welding system, we developed a condition monitoring system considering the processes before and after laser welding as a single system, and obtained and put into practical use an appropriate condition that suppresses spatter generation during laser welding. On the other hand, in resistance spot welding, the current, weld time, electrode load, and electrode tip shape are the main factors that determine the welding quality. Therefore, the configuration of the equipment is less complicated than that of laser welding system, and the condition monitoring is easier than that of the laser welding. In this study, by transferring the concept of the condition monitoring system developed for laser welding to resistance spot welding, we achieved a reduction of more than 60% in terms of electricity consumption and improved the appearance of the car body by optimizing the indentation shape. In addition to this technical achievement, we also present in this paper a case study showing the opportunity for innovation by restructuring the technological paradigm of the resistance spot welding in the production of stainless steel car body shells.



2003 ◽  
Author(s):  
Kimihiro Shibata ◽  
Takakuni Iwase ◽  
Hiroki Sakamoto ◽  
Friedrich H. Dausinger ◽  
Bernd Hohenberger ◽  
...  


Applied laser ◽  
2010 ◽  
Vol 30 (5) ◽  
pp. 395-398
Author(s):  
姜兆华 Jiang Zhaohua ◽  
潘涌 Pan Yong ◽  
王健超 Wang Jianchao ◽  
陈俊 Chen Jun ◽  
骆公序 Luo Gongxu ◽  
...  


Procedia CIRP ◽  
2019 ◽  
Vol 81 ◽  
pp. 1189-1194 ◽  
Author(s):  
Matjaž Kos ◽  
Erih Arko ◽  
Hubert Kosler ◽  
Matija Jezeršek




2008 ◽  
Vol 2008.17 (0) ◽  
pp. 239-242
Author(s):  
Masashi OIKAWA ◽  
Naoki KAWADA ◽  
Jun KOSHIKAWA ◽  
Yousuke OTSUKA ◽  
Fumio EGUCHI


2008 ◽  
Vol 77 (3) ◽  
pp. 215-219 ◽  
Author(s):  
Kiyokazu MORI ◽  
Taishi TARUI ◽  
Takahisa HASEGAWA ◽  
Nobuhiro YOSHIKAWA


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