Press forming machine

B - Operations – Transporting – 30 – B

Patent

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B30B 15/14 (2006.01) B30B 1/00 (2006.01) B30B 15/24 (2006.01)

Patent

CA 2452895

A press forming machines includes displacement measuring means for measuring a displacement between a slide plate and a reference plate. Control means measures a positional displacement of each of the driving sources by using the displacement measuring means in each of a plurality of operating steps during the molding operation, detects a desired displacement position of the entire slide plate, extracts control data including a correction amount to maintain the entire slide plate at the desired displacement position, the correction amount corresponding to a change in load on each of the driving sources, stores the control data in the memory, supplies the control data to the driving sources, and separately drives the driving sources. Since an actual molding operation can be performed using control data generated in a trial molding operation, the cycle time of the actual molding can be shortened.

L'invention porte sur une presse comportant un moyen de mesure du déplacement relatif du coulisseau et du plateau de référence, et dans laquelle un moyen de commande: mesure à l'aide du susdit moyen de mesure les changements de position de chaque vérin pendant chacune des phases d'une opération de formage et détecte les positions spécifiées de déplacement de la totalité du coulisseau; extrait pour chaque vérin (et stocke dans un dispositif ad hoc) les données de commande incluant les corrections dues à leurs variations de charge respectives permettant de maintenir la totalité du coulisseau dans une position de déplacement spécifiée; et fournit aux vérins leurs données individuelles de commande. On peut ainsi, en utilisant les données de commande obtenues dans un formage d'essai, raccourcir le cycle d'une opération de formage.

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