Apparatus for the continuous production of helical or annular co

Details Apparatus for the continuous production of helical or annular co Apparatus for the continuous production of helical or annular co

1992-11-10

1994-07-05

Crane, Daniel C.

Metal deforming

With use of control means energized in response to activator...

Sensing work or product

72 77, B21D 1504

Patent

active

053256930

ABSTRACT:
In a process for the continuous production of helical or annular corrugated, thin-walled, in particular longitudinally welded metal tubes, in which a freely rotating roller ring in a turntable corrugation head, which is eccentric with respect to the smooth metal tube, rolls against the smooth surface of the metal tube to produce the corrugation, and the metal tube is transported by a traction device that grips the smooth and/or corrugated metal tube, the force acting on the roller ring is constantly measured, and the rotation speed of the head is controlled as a function of the measured force.

REFERENCES:
patent: 3208256 (1965-09-01), Lehnert
patent: 3486357 (1969-12-01), Raisch
patent: 3656331 (1972-04-01), Kuypers et al.
patent: 3732717 (1973-05-01), Ahlvers
patent: 4501134 (1985-02-01), Staat et al.

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