Apparatus and method for shearing material

B - Operations – Transporting – 26 – D

Patent

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Details

B26D 5/42 (2006.01) B21D 43/04 (2006.01) B23D 15/00 (2006.01) B23D 15/06 (2006.01) B23D 33/02 (2006.01) B23D 33/08 (2006.01) B23D 35/00 (2006.01) B23K 26/26 (2006.01) B26D 1/08 (2006.01)

Patent

CA 2262752

The present invention relates to shearing apparatus, and method of operating the same. The apparatus (10) may include a plurality of spring clamping members (81-88) positioned longitudinally along a first die shoe (502), the clamping members (81-88) positioned in raised stepped sequence from a centerline (800) perpendicular to longitudinal sides of the die shoe (502) to sequentially contact with the sheet material (40). The shearing apparatus (10) may include a die assembly (500) having linear bearings (27) and guide rails (26) for guiding movement of the die shoe (502), and gas springs (28) which return the die shoe (502) to the open position. The shearing apparatus (10) provides straight cuts with a maximum cut-edge tolerance of 0.0015 inch. The shearing apparatus (10) may include a second die shoe (504) having an angled blade (50) to allow a higher shear to break ratio.

Cette invention porte sur une machine à cisailler ainsi que sur sa méthode d'exploitation. Cette machine (10) peut comporter plusieurs organes de préhension (81-88) à ressort positionnés dans le sens de la longueur le long d'un premier porte-matrice (502). Ces organes de préhension (81-88) sont disposés séquentiellement de manière échelonnée et en surélévation à partir d'une ligne médiane perpendiculaire aux faces longitudinales du porte-matrice (502) afin de rentrer en contact séquentiellement avec le matériau en feuille (40). Cette machine (10) peut également comporter une matrice (500) pourvue de paliers linéaires (27) et de rails de guidage (28) servant à guider le mouvement du porte-matrice (502) ainsi que des ressorts à gaz (28) ramenant le porte-matrice (502) en position ouverte. Cette machine à cisailler (10) assure des coupes droites avec une tolérance maximale de bord franc de 0,0015 pouce. Elle peut aussi comporter un second porte-matrice (504) pourvu d'un lame inclinée (50) autorisant un meilleur cisaillement et, partant moins de cassures lors de la coupe.

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