B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 22/18 (2006.01)
Patent
CA 2370780
The present disclosure relates to a method for forming an end portion (22) of a tube (20). The method includes rotating the tube (20) about a longitudinal axis (24), heating the end portion (22) of the tube (20), and forming the end portion (22) of the tube (20) by reciprocating a forming member (26) along a succession of curved forming paths (28). Each curved forming path (28) is tangent to and curves away from a corresponding one of a succession of angularly spaced apart, substantially straight reference lines (30). A forming reduction is provided between each curved forming path (28) and its corresponding one of the reference lines (30).
La présente invention porte sur un procédé de formation d'une partie terminale (22) d'un tube (20). Ce procédé consiste à faire tourner le tube (20) autour d'un axe longitudinal (24), chauffer la partie terminale (22) du tube (20) et former cette partie terminale (20) en faisant aller et venir un élément de formage (26) le long d'une succession de voies (20) courbes. Chaque voie courbe (28) s'écarte en se courbant et est tangente à une ligne correspondante parmi la succession de lignes de référence (30), pratiquement droites, espacées de manière angulaire. Une diminution s'effectue entre chaque voie (28) courbe de formage et sa ligne de référence correspondante (30).
Robic
Tandem Systems Inc.
LandOfFree
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