Metal shearing machine

Details Metal shearing machine Metal shearing machine

1988-08-15

1991-02-12

Phan, Hien H.

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

83633, 83635, 83693, 83917, 836391, B26D 109, B26D 512

Patent

active

049914804

ABSTRACT:
Two shearing blades disposed along two lines which intersect each other are carried on the bottom edges of two adjacent walls of a four-sided ram structure. The ram is supported at four points whereby to provide greater stability. The workpiece is carried on the aligned top surfaces of a fixed bed and a movable carriage. The movable carriage is movable in a first direction. Finger grippers, joined by a connecting bar, are movable in slots along the top surface of the movable carriage in a second direction. Thus, the workpiece is moved in the first direction by movement of the movable carriage and in the second direction by movement of the finger grippers. The workpiece may be precisely and accurately positioned under the shearing blades making use of sensors in each of the finger grippers and a lateral sensors in each of the finger grippers and a lateral sensor at the end of the movable carriage. The drives for driving the movable carriage and the finger grippers are controlled by a processor which also receives feedback signals from the drives indicative of the distances moved by the movable carriage and the finger grippers.

REFERENCES:
patent: 3828639 (1974-08-01), Roch
patent: 3893361 (1975-07-01), Harris
patent: 3942400 (1976-03-01), Roch
patent: 4463642 (1984-08-01), Minato et al.
patent: 4811640 (1989-03-01), Fritsch

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