| 摘要 |
<p>1. A device for guiding a tool on a workpiece (6) in welding and cutting processes with a protective cap (1) facing the workpiece, in which cap a sensor (2) is disposed for detecting the parameters with respect to the workpiece, characterised in that the protective cap (1) has a supply line (3) for supplying a gaseous cooling medium into the protective cap, and in that the cooling medium is discharged from the protective cap via at least one discharge line (4), whose outlet (5) is oriented towards the side facing away from the workpiece (6).</p> |
