B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 19/14 (2006.01)
Patent
CA 2621965
An apparatus for cold-forming a workpiece having a substantially round cross--section and an elongate body into a tube having a main portion with a substantially tetragonal cross-section and a reinforced end. The apparatus includes a die in which a received portion of the body of the workpiece is receivable and from which a preselected portion of the body extends, and a first punch adapted to bend the preselected portion radially outwardly to form a curled end. The apparatus also includes a second punch to form the curled end into a round reinforced end, and a die subassembly for forming the received portion of the body of the workpiece into the main portion of the tube having the substantially tetragonal cross-section and for forming the round reinforced end into the reinforced end of the tube.
Gharib Mohamed
Gowling Lafleur Henderson Llp
LandOfFree
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