Four-hammer forging device

B - Operations – Transporting – 21 – J

Patent

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Details

B21J 13/02 (2006.01) B21J 7/16 (2006.01)

Patent

CA 2542185

The invention relates to metal forming and can be used for forging billets and blanks by means of hydraulic forging presses. The inventive device comprises two holders for top and lower hammers and two holders for side hammers which are cinematically connected thereto. Each top and lower hammer is provided with two working surfaces separated by a recess in which the working surfaces of the side hammers penetrate. At least one adjusting plate is arranged between the lower hammer and the holder thereof. Said lower hammer is fixed to the holder by two L-shaped clamps which are pressed by the inclined faces thereof against the inclined faces of the lower hammer holder and by the wavy faces thereof against two friction plates which are made, for example of copper and fixed to the side surfaces on the lower hammer. Pins which are fixed in the lower hammer pass through the holes of the adjusting plates and penetrate into the holes of the lower hammer holder.

L'invention appartient au domaine du traitement des métaux par pression et peut s'utiliser dans le forgeage de lingots et d'ébauches dans des presses de forgeage. Le dispositif comprend deux supports des frappes supérieure et inférieure et deux supports des frappes latérales, reliés cinématiquement aux supports des deux premières frappes. Les supports des frappes latérales possèdent des surfaces inclinées qui correspondent aux surfaces inclinées des supports des frappes inférieure et supérieure. Les frappes inférieure et supérieure comprennent chacune deux zones de travail, séparées par une partie découpée dans laquelle rentrent des zones de travail des frappes latérales. Entre la frappe inférieure et son support on a monté au moins une plaque de réglage. La frappe inférieure est solidarisée à la fixation au moyen de deux pinces en L, qui sont pressées par leurs surfaces inclinées contre les surfaces inclinées de la frappe inférieure, et sont pressées par leurs surfaces hachurées contre deux plaques de frottement faites, par exemple, en cuivre et fixées sur les surfaces latérales de la frappe inférieure. Dans la frappe inférieure on a monté des tiges qui passent à travers les trous des plaques de réglage et rentrent dans les trous du support de la frappe inférieure.

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