Patent ID: 6073473
Filing Date: 2000-06-13
Classification: B21C,B21D

Abstract:
A device for producing circumferentially continuous corrugations in the wall of a tube-shaped element, comprising:(a) at least one corrugating wheel which rotates on its own axis and additionally revolves around the tube-shaped element to be corrugated;(b) a rotor which carries the at least one corrugating wheel and revolves said wheel around the tube-shaped element to be corrugated;(c) a planetary wheel mounted in said rotor and cooperating with a planetary gear which drives said at least one corrugating wheel; and(d) a speed-controllable drive which rotates the at least one corrugating wheel on its own axis at a selected one of a plurality of different rpm speeds, whereby said corrugating wheel can, if desired, push material of an initially smooth tube to a larger diameter than that of said smooth tube, thereby optimizing a resulting shape of said corrugations to match an intended use of a corrugated tube produced by said device.