PROCESS FOR MOUNTING TENSIONING ELEMENT AS WELL AS DRILLING AND TENSIONING ELEMENT FOR CARRYING OUT THE PROCEDURE

摘要

Method, device and expansion element for fixing a wall board or similar whereby, after the cylindrical drilled hole is formed by a circular movement of the drill (2) according to the invention or the wall board (1), an undercut is effected at the bottom of the drilled hole, into which an expansion element is placed. The expansion element comprises a male-threaded bolt (6) which is screwed into a conically tapering drill hole of a washer (7) on the underside of which expansion segments (8) are arranged, whereby a firm fixing in the conically undercut drilled hole is achieved.