Method for producing hollow body elements, hollow body...

B - Operations – Transporting – 21 – K

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B21K 1/66 (2006.01) B21K 1/70 (2006.01)

Patent

CA 2609689

The invention relates to a method for producing hollow body elements (200), for example, nut elements which are applied to components which are normally made of steel (280), in particular, for producing hollow body elements having an essentially quadratic or rectangular external profile (202). Said method consists of cutting individual elements of a profile in the form of a profile rod (1) or a winding after holes (204) have previously been stamped in the profile, a threaded cylinder (206) is subsequently, optionally, formed using a follow-on composite tool (10) which consists of several working stations. The invention is characterised in that a penetrating process and a punching process are carried out in the working station. The invention also relates to hollow body elements (200), components, follow-on composite tools (10) and rolling mills (600, 602).

L'invention concerne un procédé de production d'éléments à corps creux (200), tels que des éléments d'écrou destinés à être fixés sur des composants généralement en tôle (280), en particulier un procédé de production d'éléments à corps creux présentant un profil extérieur (202) au moins sensiblement carré ou rectangulaire. Ce procédé consiste à découper des éléments individuels dans un profilé se présentant sous la forme d'une barre profilée (1) ou d'un rouleau après formation préalable de trous (204) dans le profilé par poinçonnage, un cylindre fileté (206) étant ensuite éventuellement formé au moyen d'un outil à suivre composé (10) comprenant plusieurs postes de travail. L'invention se caractérise en ce qu'un processus de perçage et un processus de poinçonnage sont mis en oeuvre dans les postes de travail. L'invention concerne également des éléments à corps creux (200), des pièces d'assemblage, des outils à suivre composés (10) et des laminoirs (600, 602).

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