Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Patent
1979-05-18
1980-12-09
Gilden, Leon
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
72 62, 72370, B21D 1506
Patent
active
042377137
ABSTRACT:
Apparatus for producing a tube with successive corrugations from a tubular blank of constant diameter comprises a central pin having a shaft portion fixed only at one end to a stationary support and having at the other end a radially enlarged head portion cooperating with radially inwardly moving clamping and forming jaws to clamp a portion of a tubular blank therebetween. The apparatus includes further a tubular member guided on the shaft portion of the central pin and movable in axial direction by hydraulically operated members connected thereto. The tubular member supporting a blank on the inner surface thereof and cooperating with a plurality of clamping fingers arranged axially spaced from said head portion about the outer circumference of the blank and movable by a hydraulically operated clamping piston between a clamping and a releasing position, whereby between the head portion, one end of the tubular member and the clamped portions of the blank an annular expansion chamber is formed into which fluid under pressure may be fed through bores in the central pin.
REFERENCES:
patent: 2773538 (1956-12-01), De Mers
patent: 2954064 (1960-09-01), De Mers
patent: 2960014 (1960-11-01), Rutter
patent: 3083754 (1964-04-01), De Mers
patent: 3130771 (1964-04-01), Peyton
Benteler Hubertus
Hansen Rainer
Olszewski Egon
Wecker Ferdinand
Benteler-Werke AG
Gilden Leon
Striker Michael J.
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