| 摘要 |
<p>A device for positioning a welding clamp/brace with one of its welding electrodes on the work-pieces to be welded by means of fluidic work cylinders, in which the fluidic pressure in both chambers of the work cylinder can be specified by a pressure regulating valve arrangement. A single pressure-difference control valve (19) specifies a pressure difference in the two chambers (16,17) of the work cylinder (15), and a desired value input of the pressure difference control valve (19) is designed to specify a desired value (delta P soll) of the pressure difference.</p> |
