Patent ID: 6662617
Filing Date: 2003-12-16
Classification: B21D

Abstract:
A press for transforming work pieces, comprising:a drive apparatus for driving at least one press tappet and a plurality of extractor elements for extracting the work pieces after the transforming process wherein said drive apparatus is connected with the extractor elements through a lever linkage; a tool with a tool lower element and a tool upper element, which is mounted on the press tappet; a coupling which selectively connects the drive apparatus with the extractor elements, or disengages the drive apparatus from said the extractor elements; at least one measuring sensor, comprising a triggering apparatus operatively associated with the lever linkage and positioned to measure individually and continuously the force acting on the extractor elements, wherein a triggering apparatus operates to disengage the coupling in the event of a deviation of the force value, measured by at least one measuring sensor from a standard value specified in reference to a specific point of motion of individual ones of the extractor elements by a predetermined amount.