Self-guiding punch and die set

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 37/12 (2006.01) B21D 28/14 (2006.01) B26D 5/00 (2006.01)

Patent

CA 2373195

A punch and die set (1) is provided for use in a stamping press (10) having a punch assembly (100) and a die assembly (200) reciprocated by a driving mechanism (25, 30, 35, 37, 38). The punch and die assemblies are aligned to a common center (50) and are structured to slidably engage one another for positive guidance of the punch and die tools without the need for other guidance by shafts, bars or the like. One of the punch assembly and die assembly can be non-fixedly carried by the drive mechanism, allowing the guidance of the engaged punch and die assemblies to define the relative positions of the tools. This arrangement eliminates any stack-up of tolerances between the assemblies and substantially reduces misalignment during stamping, including any misalignment that may be introduced by the press driving mechanism.

L'invention concerne un arrangement poinçon et matrice (1) pour presse à estamper (10) qui comprend un ensemble poinçon (100) et un ensemble matrice (200) mis en sollicitation mutuelle par un mécanisme d'entraînement (25, 30, 35, 37, 38). Ces ensembles sont alignés sur un centre commun (50) et conçus pour coulisser l'un par rapport à l'autre de manière à établir un guidage positif des outils poinçon et matrice sans autre forme de guidage via des arbres, barres, etc. L'un des deux ensembles peut être monté non fixe sur le mécanisme d'entraînement, moyennant quoi le guidage des deux ensembles qui se sollicitent mutuellement définit les positions relatives des outils. Cet arrangement permet d'éliminer tout cumul de tolérances entre les ensembles et de réduire sensiblement les défauts d'alignement durant l'estampage, y compris les défauts d'alignement susceptibles d'être introduits par le mécanisme d'entraînement de la presse.

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