Sheet metal forming die assembly with textured die surfaces

Details Sheet metal forming die assembly with textured die surfaces Sheet metal forming die assembly with textured die surfaces

B - Operations, Transporting

21

C

B21C 3/02 (2006.01) B21D 22/02 (2006.01) B21D 22/26 (2006.01)

Patent

CA 2448099

An improved stamping die assembly is provided for controlling the flow of sheet metal during the draw forming process. The die assembly includes a textured die surface on the one or both sides of the binder mating surfaces that replaces conventional draw and lock beads. The textured die surface can be formed using direct metal deposition of a hard material, harder than the existing die surfaces, on the existing die base material to achieve an engineered textured surface. The textured die surface optimizes the performance of the die by enabling longer die life, higher coefficients of friction between the mating binder surfaces and reduction of wrinkles and stringers typically caused by draw and lock beads in the draw forming process.

Une matrice à estamper améliorée permet de commander l'écoulement de tôles lors du processus d'étirage. Cette matrice comprend une surface de matrice texturée sur l'un ou deux des côtés des surfaces homologues de liaison, qui remplace les perles d'étirage et de blocage conventionnelles. La surface de matrice texturée peut être formée par dépôt métallique direct de matériau dur, plus dur que les surfaces de matrice existantes, sur le matériau de base existant de la matrice. pour obtenir une surface texturée technique. La surface de matrice texturée optimise la performance de la matrice en assurant une plus longue durée de vie, des coefficients de frottement plus élevés entre les surfaces de liaison homologues et la diminution des plis et des inclusions linéaires dans la direction du travail, causés par les perles d'étirage et de blocage du processus d'étirage.

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