| 摘要 |
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.
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