METHOD OF FORMING HOLLOW ARTICLES

A method of forming a hollow article (2) comprises the steps of providing a metal blank in the form of a disk. Subsequently, a metal blank is transferred to a first forming station which comprises a punch and a die. A metal blank is formed into a cup having a sidewall and a closed base. A boundary l...

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Bibliographische Detailangaben
Hauptverfasser:	NOBLE, Alan William, TURNER, Richard, WHALLEY, Mark, SEILER, Matthias, KRÄTZIG, Christian
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A method of forming a hollow article (2) comprises the steps of providing a metal blank in the form of a disk. Subsequently, a metal blank is transferred to a first forming station which comprises a punch and a die. A metal blank is formed into a cup having a sidewall and a closed base. A boundary lubrication is provided between the die and the metal blank by application of a lubricant. Hereinafter, the metal cup is provided to a set of forming stations in a deep drawing transfer press. The set of forming stations comprises at least one set of punches and dies. Said metal cup is deep drawn into a hollow article (2) having a sidewall (4) and a closed base (7) with an inner and an outer surface (, 8, 6, 9) by the action of said at least one set of punches and dies. Subsequently, the hollow article (2) is provided to a subsequent forming station in the deep drawing transfer press. Hereinafter, an individual identification mark is supplied to the outer surface (6, 9) of the container sidewall (4) and/or of the base (7) by means of laser engraving at said subsequent forming station.