Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1999-10-04
2000-12-26
Jones, David
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
724824, B21D 502
Patent
active
061641146
ABSTRACT:
A compensation device (10) for a press brake that provides vertical arcuate adjustment to a die holding an elongated workpiece to be configured by the press brake. The compensation device (10) includes a die holder member (18) that removably receives the die, an elongated wedge (14) having an inclined upper surface (60) that congruently engages an inclined lower surface (82) of the die holder member (18), and a press bed engagement member (12) that supports the wedge (14) and positions the die holder member (18) such that the wedge (14) is capable of lateral movement relative to the die holder member (18) thereby arcuately elevating the combined die holder member (18), die and workpiece by adjusting one wedge deformation bolt (76). The arcuately elevated workpiece prevents incomplete bends or "flat spots" from occurring in a mid-portion of the workpiece due to an overloaded or relatively "long" press bed in the press brake. The device (10) further includes the capability of determining the amount of elevation of the die holder member (18) by utilizing a "feeler gauge" to measure the lateral dimension of a gap (102) vertically separating the die holder member (18) and the press bed engagement member (12).
REFERENCES:
patent: 4426873 (1984-01-01), Pearson et al.
patent: 4449389 (1984-05-01), Cros
patent: 4736612 (1988-04-01), Russell
patent: 4898015 (1990-02-01), Houston
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