Metalworking method wherein formed configuration locates blank

Details Metalworking method wherein formed configuration locates blank Metalworking method wherein formed configuration locates blank

1997-12-15

1999-07-06

Crane, Daniel C.

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflector arranged to bend work transversely of...

72180, 72187, 72198, 723796, 72414, B21D 1302, B21D 1308

Patent

active

059184973

ABSTRACT:
A metalworking iterative method of cold-working blanks into configurations having contiguously repeated predetermined forms wherein an advance-worked form functions to locate a succeeding form. A first portion of a blank is squeezed into a predetermined form in a forming position of a press. The predetermined form corresponds to one cycle of the reciprocal undulations of an undulated plate spring. The blank is then shifted in the feed direction of the press by a feed pitch corresponding to one undulation, thereby locating the worked first portion of the blank into a locating position of the press, meanwhile a pitch-length second portion is in the forming position. Accordingly, the accuracy of the succeeding press operation on the second portion in terms of its contiguous position relative to the worked first portion is secured. Moreover, press dies which conform to the predetermined form are sufficient to cold-work the blanks, and can be smaller than dies corresponding to the entire finished configuration working press space requirements are reduced, curtailing costs accordingly.

REFERENCES:
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patent: 3474513 (1969-10-01), Allingham
patent: 4041749 (1977-08-01), Veitl
patent: 4434643 (1984-03-01), Almqvist
patent: 4450706 (1984-05-01), Engelmohr
patent: 4840054 (1989-06-01), Sjogren
patent: 4989440 (1991-02-01), Sjogren

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