Apparatus for flanging sheet metal blanks

Details Apparatus for flanging sheet metal blanks Apparatus for flanging sheet metal blanks

1987-07-10

1988-08-23

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

72319, 72389, 72481, B21D 504

Patent

active

047651717

ABSTRACT:
An apparatus for flanging sheet metal blanks comprises a holding-down ram (4), which is provided with a holding-down shoe (5), that is composed of a plurality of segments, which are arranged in a row and comprise a mid-segment (7) and at each end of the mid-segment a plurality of side segments (6), which are displaceable along said row, which is parallel to a bend line, about which the blank is to be flanged. To facilitate the removal of the mid-segment from the row of segments, the holding-down ram (4) carries a slider, which is displaceable in the direction of movement of the holding-down ram and has a slide track (10), which is open at least at one end and serves to guide the mid-segment (7). The slider (11) is adapted to be raised to a retracted position adjacent to a segment changer (13) for replacing a given mid-segment (7) by another.

REFERENCES:
patent: 4089198 (1978-05-01), Amano et al.
patent: 4112731 (1978-09-01), Anderson et al.

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