Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1994-09-23
1998-01-27
Weber, Thomas R.
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72477, 724811, 7248292, 425183, 425195, B21D 502
Patent
active
057111812
ABSTRACT:
A die for a press brake is formed with: a first V-shaped groove (43A) extending in a longitudinal direction and on an upper surface thereof; a second V-shaped groove (43B) extending in the same way in parallel to the first V-shaped groove; a plurality of first engage slots (45A) arranged on a lower surface thereof in parallel to the first V-shaped groove by a predetermined distance (A) from a central bottom line of the first V-shaped groove; and a plurality of second engage slots (45B) arranged in the same way in parallel to the second V-shaped groove by the same predetermined distance from a central bottom line of the second V-shaped groove. The first and second engage slots (45A, 45B) are used in common for alignment of the first and second V-shaped grooves (43A, 43B) with a punch (7) mated to the die. Accordingly, after one of the V-shaped grooves has been aligned with the punch, even if the two V-shaped grooves are replaced with each other, the die can be used immediately without any additional alignment with the punch.
REFERENCES:
patent: 3109476 (1963-11-01), Giordano
patent: 4510789 (1985-04-01), Tomioka et al.
patent: 4866975 (1989-09-01), Hopkins
European Search Report dated 21 Dec. 1994.
Amada Metrecs Company Limited
Weber Thomas R.
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