Process and apparatus for controlling a lifting support on sheet

Details Process and apparatus for controlling a lifting support on sheet Process and apparatus for controlling a lifting support on sheet

1987-06-03

1988-06-28

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72419, 72 24, 364476, 364472, B21D 1122

Patent

active

047531002

ABSTRACT:
For supporting a sheet-metal article which rests on a die and which executes an upward pivoting movement during the pressing operation, a vertically movable supporting unit is provided. The movement of the latter is coordinated with the ram movement and executed at a speed which is in a specific ratio to the speed of the ram. This ratio corresponds to the ratio of the distance between the support and the die edge facing it to half the die width.

REFERENCES:
patent: 4341104 (1982-07-01), Jarman
patent: 4594870 (1986-06-01), Koyama et al.

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