Bending machine provided with a blank holder having programmable

Details Bending machine provided with a blank holder having programmable Bending machine provided with a blank holder having programmable

1997-09-25

1999-08-24

Crane, Daniel C.

Metal deforming

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

Plural or complex apparatus

72322, B21D 504

Patent

active

059411163

ABSTRACT:
A bending machine for the production of metal sheet panels having bent edges comprises a blank holder having programmable length provided with blank holder composition segments each formed by a main slidable segment and by an auxiliary segment movably supported by the main segment and operatively connected to actuators capable of displacing it from a work position wherein an active edge thereof is aligned with continuity with an active edge of the main segment to an at rest position wherein it is capable of penetrating inside a cavity obtained in one side of a segment that is adjacent to it on the opposite side of the main coupled segment.

REFERENCES:
patent: 4660402 (1987-04-01), Hongo
patent: 4722214 (1988-02-01), Hayashi
patent: 4930332 (1990-06-01), Hongo
patent: 5313814 (1994-05-01), Yamamoto
patent: 5642639 (1997-07-01), Codatto

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