RESISTANCE WELDING EQUIPMENT AND WELDING METHOD

Japanese Patent JP3644831

B2

PROBLEM TO BE SOLVED: To improve the precision of an object to be welded without making it a die set structure by supporting a second object to be welded with a support mechanism, floating the support mechanism from a base with a spring, supporting a first object to be welded with a welding electrode, driving the support mechanism in the XY direction to align the cores of the first/second objects to be welded and conducting resistance welding.
SOLUTION: A first object 3 to be welded is inserted into a longitudinal cavity of a first welding electrode 1 and is held. The first object 3 to be welded is preferably positioned by a first positioning member extending from an opening hole of the welding electrode 1 to the longitudinal cavity and a second positioning member forwarding and backwarding. A second object 4 to be welded is placed on a support table 5 and is held by collect chuck mechanism 6. By aligning the cores of the first/second objects 2, 3 and descending the first welding electrode 1, the first/second objects are resistance-welded. When the temp. of a weld zone is lowered to the transformation temp., tempering is conducted by causing a single pulse current to flow and thereafter, the pressing force of the first welding electrode 1 is released.

Nobuyuki Hayakawa
Koji Sasaki
Yoshihiro Okada

JP29765598A

May 11, 2005

October 05, 1998

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Origin Electric Co., Ltd.

B23K11/14; B23K11/00; B23K11/24; B23K11/30; B23K11/36; B23K37/04; (IPC1-7): B23K11/00; B23K11/30; B23K11/36

JP60118394A
JP9168871A
JP64010381U
JP6126467A
JP5000383A

奥田滝夫,スポット溶接入門,日本,産報出版株式会社,1994年 1月20日,重版,P.93-95,103-104,161-167

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