Method and device for shaping by hammering a corrugated tube and

Details Method and device for shaping by hammering a corrugated tube and Method and device for shaping by hammering a corrugated tube and

1988-06-29

1989-08-01

Crane, Daniel C.

Metal deforming

By three or more coacting relatively movable tools

Concurrently actuated tools

72398, 72393, 72370, B21D 4102, B21D 1504, B21D 1506

Patent

active

048523801

ABSTRACT:
A shaping device for corrugating a tube includes at least one mandrel which is radially expansible and has a body associated with at least one relatively resilient arm which carries on its surface an impression whose profile corresponds to the profile of the corrugation to be obtained, and an axially movable locking member for causing the mandrel to move from a retracted position to an outer position in which the locking member immobilizes the mandrel, and hammers. The hammers, the tube and the mandrel-locking member are adapted to be subjected to relative rotations about their common longitudinal axis.

REFERENCES:
patent: 743192 (1903-11-01), Rainforth
patent: 743193 (1903-11-01), Rainforth
patent: 1890039 (1932-12-01), Lange
patent: 2542305 (1951-02-01), Brinen et al.
patent: 3345730 (1967-10-01), Laverty
patent: 3494170 (1970-02-01), Valleins
patent: 4182152 (1980-01-01), Vaill et al.

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