Method for forming a pipe section
AssigneeLeifeld Metal Spinning AG
InventorWerner Huetter
Life of this patent
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Abstract
The invention relates to a process for forming a pipe portion, in which process a base having an opening and having an inwardly projecting collar is formed. It is provided that the pipe portion is made to rotate, that the pipe portion is drawn in by means of a forming roller, with the base being formed by the drawing-in process, that an inwardly projecting material thickening is formed integrally in the base and that an opening is made in the base in the region of the inwardly projecting material thickening, wherein the inwardly projecting collar is formed by at least part of the inwardly projecting material thickening. Furthermore, the invention relates to an apparatus for forming a workpiece.
Claims14
A method for producing a pipe-shaped container, in which a base with an opening and with an inward-projecting collar is provided, said method comprising the steps of wherein
- rotating a pipe section of a basic workpiece extending in a longitudinal direction,
- necking in the pipe section by means of a forming roller such that, the base is formed at the end of the pipe section in the longitudinal direction wherein the base projects along the longitudinal direction outwardly in a concave manner,
- forming an inward-projecting material thickening into the base such that the inward-projecting material thickening protrudes inwardly with respect to the base along the longitudinal direction and
- forming an opening in the area of the inward-projecting material thickening, in such a manner that the inward-projecting collar is provided by at least a part of the inward-projecting material thickening.
Dependencies are inferred from the claim text.