Method and apparatus for forming a corrugated tube by hammering and its application to tubes for the automobile industry

摘要

this system includes mainlyat least a radially expandable mandrel (10) with the body (11) is associated with at least one arm (12), which is the elastic surface (13), a print pattern (14) and (15) corresponds to that of the wave to obtain a lock (20) and axialeu00adment for mobile pass the the mandrel to a position in a escau00admotu00e9e deployed position where the hammer and the fixed tube.cylinder lock with relationships are likely to be common longituu00addinal relation along the axis.;application in particular to tubes for steering column of automobile.