Method of open and/or closed-loop control of the movement of...

Details Method of open and/or closed-loop control of the movement of... Method of open and/or closed-loop control of the movement of...

2004-06-02

2008-09-02

Kerns, Kevin P. (Department: 1793)

Electric heating

Metal heating

For bonding with pressure

C219S090000

Reexamination Certificate

active

07420137

ABSTRACT:
A method for open or closed-loop control of welding tong movement utilizes a welding tong drive having a primary and a secondary drive device. The primary drive device moves two welding tong limbs with welding electrodes toward a welding object from opposite sides. The welding tong limbs press onto the welding object with a predetermined compressive force. During actuation, the secondary drive device varies a spatial orientation of the welding tongs. In order to contact the welding object in a controlled manner, and to reliably acquire any deviations from specified spatial points during contacting, the welding tongs first approach a spatial point relative to the welding object. The welding tong limbs are held in a fixed spatial orientation during the approach. The secondary drive device is actuated until a welding tong limb contacts the welding object. The primary drive device then closes the welding tong limbs.

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International Search Report dated Nov. 12, 2004 in PCT International Appln. No. PCT/EP2004/005934 (4 pages).

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