Method and apparatus for forming a profile in a wall of a hollow

Details Method and apparatus for forming a profile in a wall of a hollow Method and apparatus for forming a profile in a wall of a hollow

1997-09-19

1999-01-26

Hail, III, Joseph J.

Earth working

Alternating for right or left hand operation

Tools oriented for movement in opposite directions

72208, B21D 908, B21B 1710

Patent

active

058627006

ABSTRACT:
Hollow cylindrical blanks of tubular stock are transformed into finished work pieces (3) in a single work stroke with a profiling tool (7) equipped with profiling rollers (30) in one tool section (8) and a die matrix (15) in another tool section (6). The two tool sections (6, 8) are coaxially movable relative to each other, for example by a press. Each profiling roller in the one tool section is rotatably mounted in a chamber and all rollers (30) are positioned circularly around a central longitudinal tool axis (34) so that a central plane of each roller extends substantially radially relative to the tool axis. The die matrix (15) in the other tool section (6) is supported on a central mandrel or arbor (14) that also supports the blank. The die matrix (15) has in its outer surface a plurality of grooves (15A) and ridges (15B) that cooperate with grooves and ridges in the profiling rollers.

REFERENCES:
patent: 5709118 (1998-01-01), Ohkubo

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