Patent ID: 6167983
Filing Date: 2001-01-02
Classification: B21D,B60K,F01N

Abstract:
Process for production of a tube profile element having a swaged closed head end, said process comprising the steps of: (a) chamfering an unswaged end of a tube profile element having a first diameter to provide a chamfered end on the tube profile element; (b) supporting the tube profile element in a retaining tool such that an end portion of the tube profile element having the unswaged chamfered end thereon extends beyond the retaining tool; (c) providing a swage tool having a negative die capable of swaging the end portion of the tube into a swaged closed head end having a maximum second diameter larger the first diameter of the unswaged end of the tube; and (d) moving the swage tool toward the end portion of the tube and swaging the unswaged chamfered end of the tube, by the negative die of the swage tool, into the swaged closed head end of the tube profile element.