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Title:
SEAM WELDING MACHINE
Document Type and Number:
Japanese Patent JP2010269332
Kind Code:
A
Abstract:

To provide a seam welding machine capable of rotation-driving first and second electrodes at the correct speed while accurately measuring the diameters of the first and second electrodes.

The seam welding machine includes a distance meter 42 for measuring the height of a second electrode 13, a first rotating means 14 for rotating a first electrode 12, a second rotation driving means 15 for rotation-driving the second electrode 13 via a clutch 34, a tachometer 38 for measuring the number of rotation N per unit time of the second electrode 13, and a control means for measuring the diameters of the first electrode 12 and the second electrode 13 based on the output of the distance meter 42, the number of rotation n per unit time of the first electrode 12 driven in the forward direction by the first rotating means 14, and the number of rotation N of the second electrode 13 driven by the first electrode 12. The first electrode 12 and the second electrode 13 are driven while adjusting to the welding speed of a workpiece passing through a space between the first electrode 12 and the second electrode 13.


Inventors:
HISADA KOICHI
IKEMOTO KOICHI
Application Number:
JP2009000122268
Publication Date:
December 02, 2010
Filing Date:
May 20, 2009
Export Citation:
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Assignee:
NAS TOA CO LTD
International Classes:
B23K11/24; B23K11/30
Domestic Patent References:
JP2001353532A2001-12-25
JP2003039178A2003-02-12
JPS57185486U1982-11-25
JPH02138074U1990-11-19
JPS59183986A1984-10-19
JP2000042752A2000-02-15
Attorney, Agent or Firm:
中前 富士男
来田 義弘