B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 37/20 (2006.01)
Patent
CA 2378801
A method and an apparatus for machining a mold material to produce a mold. By casting based on a cast mold model (15), a mold material (20) is produced in a form having a work margin. Thereafter, a shape of the mold material (20) is measured by a measuring device (16), and measurement data and an envelope model (M2) generated based on the measurement data are stored in a storage unit (12A) of a computer (12). Thereafter, a mold model (M1) based on mold design data and an envelope model (M2) are displayed on a display unit (12C), and the envelope model (M2) is linearly moved in direction of three axes X, Y and Z orthogonal to one another respectively and rotated around the three axes to bring a product forming plane (M28) of the envelope model (M2) into close proximity of a product forming plane (M1B) of the mold model (M1). Thereby, a state in which a work amount of a product forming plane (20B) of the mold material (20) is reduced is found, and a reference plane (20A) and a product forming plane (20B) of the mold material 20 are cut by a mold working machine (18) controlled by the computer (12).
La présente invention concerne un procédé de fabrication de moule en métal. A cet effet, on commence par prendre les cotes de la géométrie de l'ébauche d'un moule en métal (20) respectant une tolérance d'usinage vérifiée au comparateur (16). Partant des données de mesure, on établit et on mémorise sur un ordinateur (12) une géométrie d'enveloppe cotée (M2). Sur la base du plan coté du moule en métal, on rapproche ensuite à la géométrie d'enveloppe de l'article (M2B) du modèle d'enveloppe (M2) en mémoire dans l'ordinateur (12) la géométrie d'enveloppe de l'article (M1B) de l'ébauche de moule en métal (M1). On calcule ensuite l'usinage le plus économique pour la géométrie cotée de l'article (20B) à partir de l'ébauche du moule en métal (20). Il ne reste plus qu'à tailler la forme cotée de référence (20A) et la forme cotée de l'article (20B) de l'ébauche du moule en métal (20) au moyen d'une fraiseuse (18) à commande numérique (12) pour moule en métal.
Kikuchi Norihiko
Miyamoto Yutaka
Kikuchi Co. Ltd.
Mbm Intellectual Property Law Llp
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